/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 13:16:46,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 13:16:46,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 13:16:46,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 13:16:46,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 13:16:46,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 13:16:46,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 13:16:46,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-08-06 13:16:46,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 13:16:46,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 13:16:46,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-06 13:16:46,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-06 13:16:46,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 13:16:46,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 13:16:46,158 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 13:16:46,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 13:16:46,159 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 13:16:46,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 13:16:46,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 13:16:46,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 13:16:46,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 13:16:46,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 13:16:46,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 13:16:46,160 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 13:16:46,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 13:16:46,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 13:16:46,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 13:16:46,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 13:16:46,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 13:16:46,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 13:16:46,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 13:16:46,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:16:46,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 13:16:46,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 13:16:46,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 13:16:46,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 13:16:46,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 13:16:46,162 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 13:16:46,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 13:16:46,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 13:16:46,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 13:16:46,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 13:16:46,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 13:16:46,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 13:16:46,486 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 13:16:46,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2021-08-06 13:16:46,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc60a1e85/fa3a1dfe8d8c4c10b0fe3a6e24cec992/FLAG46079684e [2021-08-06 13:16:47,085 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 13:16:47,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2021-08-06 13:16:47,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc60a1e85/fa3a1dfe8d8c4c10b0fe3a6e24cec992/FLAG46079684e [2021-08-06 13:16:47,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc60a1e85/fa3a1dfe8d8c4c10b0fe3a6e24cec992 [2021-08-06 13:16:47,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 13:16:47,398 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 13:16:47,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 13:16:47,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 13:16:47,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 13:16:47,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ec05df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47, skipping insertion in model container [2021-08-06 13:16:47,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 13:16:47,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 13:16:47,774 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2021-08-06 13:16:47,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:16:47,800 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 13:16:47,825 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2021-08-06 13:16:47,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:16:47,888 INFO L208 MainTranslator]: Completed translation [2021-08-06 13:16:47,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47 WrapperNode [2021-08-06 13:16:47,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 13:16:47,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 13:16:47,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 13:16:47,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 13:16:47,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 13:16:47,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 13:16:47,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 13:16:47,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 13:16:47,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 13:16:47,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 13:16:47,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 13:16:47,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 13:16:47,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (1/1) ... [2021-08-06 13:16:47,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:16:47,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:16:47,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 13:16:48,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 13:16:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-08-06 13:16:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-08-06 13:16:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-08-06 13:16:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-08-06 13:16:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 13:16:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 13:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-06 13:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 13:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-06 13:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 13:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 13:16:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 13:16:48,038 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 13:16:48,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 13:16:48,639 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-06 13:16:48,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:16:48 BoogieIcfgContainer [2021-08-06 13:16:48,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 13:16:48,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 13:16:48,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 13:16:48,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 13:16:48,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 01:16:47" (1/3) ... [2021-08-06 13:16:48,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3b1db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:16:48, skipping insertion in model container [2021-08-06 13:16:48,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:16:47" (2/3) ... [2021-08-06 13:16:48,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3b1db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:16:48, skipping insertion in model container [2021-08-06 13:16:48,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:16:48" (3/3) ... [2021-08-06 13:16:48,657 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2021-08-06 13:16:48,662 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 13:16:48,662 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 13:16:48,662 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-06 13:16:48,662 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 13:16:48,701 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,701 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,701 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,701 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,702 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,702 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,702 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,702 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,702 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,702 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,702 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,703 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,703 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,704 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,704 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,704 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,704 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,704 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,704 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,704 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,704 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,705 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,705 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,705 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,705 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,705 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,705 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,706 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,706 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,706 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,706 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,706 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,707 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,708 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,708 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,708 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,709 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,710 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,710 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,710 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,710 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,710 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,712 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,712 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,716 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,716 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,716 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,717 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,717 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,717 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,718 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,718 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,719 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,719 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,721 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,721 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,721 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,722 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,722 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,722 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,722 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,724 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,724 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,726 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,727 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,727 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,727 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,728 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,728 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,728 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,729 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,729 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,729 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,730 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,730 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,732 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,732 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,732 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,732 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,732 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,732 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,733 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,733 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,733 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,733 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,733 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,733 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,734 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,734 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,734 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,734 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,734 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,734 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,734 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,735 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,735 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,735 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,735 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,735 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,735 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,736 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,736 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,736 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,736 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,736 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,736 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,736 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,736 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,737 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,737 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,737 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,737 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,737 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,737 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,737 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,737 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,741 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,741 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,742 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,742 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,742 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,742 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,742 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,742 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,743 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,743 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,743 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,743 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,743 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,743 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,744 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,744 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,744 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,744 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,747 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,747 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,747 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,748 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,748 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,749 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,749 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,750 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,750 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,751 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:16:48,757 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-06 13:16:48,793 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork1 ======== [2021-08-06 13:16:48,798 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 13:16:48,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-06 13:16:48,813 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 145 places, 150 transitions, 322 flow [2021-08-06 13:16:49,046 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7813 states, 7811 states have (on average 2.8641659198566125) internal successors, (22372), 7812 states have internal predecessors, (22372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 7813 states, 7811 states have (on average 2.8641659198566125) internal successors, (22372), 7812 states have internal predecessors, (22372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-06 13:16:49,095 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:16:49,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:16:49,097 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:16:49,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:16:49,104 INFO L82 PathProgramCache]: Analyzing trace with hash -267865015, now seen corresponding path program 1 times [2021-08-06 13:16:49,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:16:49,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827096371] [2021-08-06 13:16:49,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:49,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:16:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:16:49,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:16:49,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827096371] [2021-08-06 13:16:49,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827096371] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:16:49,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:16:49,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 13:16:49,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588240682] [2021-08-06 13:16:49,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 13:16:49,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:16:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 13:16:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 13:16:49,406 INFO L87 Difference]: Start difference. First operand has 7813 states, 7811 states have (on average 2.8641659198566125) internal successors, (22372), 7812 states have internal predecessors, (22372), 0 states have call successors, (0), 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 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2021-08-06 13:16:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:16:49,538 INFO L93 Difference]: Finished difference Result 10818 states and 29690 transitions. [2021-08-06 13:16:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 13:16:49,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 54 [2021-08-06 13:16:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:16:49,610 INFO L225 Difference]: With dead ends: 10818 [2021-08-06 13:16:49,611 INFO L226 Difference]: Without dead ends: 10548 [2021-08-06 13:16:49,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 13:16:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10548 states. [2021-08-06 13:16:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10548 to 10224. [2021-08-06 13:16:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10224 states, 10222 states have (on average 2.759929563686167) internal successors, (28212), 10223 states have internal predecessors, (28212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10224 states to 10224 states and 28212 transitions. [2021-08-06 13:16:50,149 INFO L78 Accepts]: Start accepts. Automaton has 10224 states and 28212 transitions. Word has length 54 [2021-08-06 13:16:50,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:16:50,151 INFO L470 AbstractCegarLoop]: Abstraction has 10224 states and 28212 transitions. [2021-08-06 13:16:50,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2021-08-06 13:16:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 10224 states and 28212 transitions. [2021-08-06 13:16:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-06 13:16:50,160 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:16:50,160 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:16:50,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 13:16:50,161 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:16:50,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:16:50,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1789543597, now seen corresponding path program 1 times [2021-08-06 13:16:50,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:16:50,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048202168] [2021-08-06 13:16:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:50,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:16:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:16:50,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:16:50,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048202168] [2021-08-06 13:16:50,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048202168] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:16:50,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:16:50,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 13:16:50,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740143340] [2021-08-06 13:16:50,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 13:16:50,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:16:50,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 13:16:50,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 13:16:50,289 INFO L87 Difference]: Start difference. First operand 10224 states and 28212 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:16:50,528 INFO L93 Difference]: Finished difference Result 15012 states and 41360 transitions. [2021-08-06 13:16:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 13:16:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-08-06 13:16:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:16:50,614 INFO L225 Difference]: With dead ends: 15012 [2021-08-06 13:16:50,614 INFO L226 Difference]: Without dead ends: 15012 [2021-08-06 13:16:50,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 13:16:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15012 states. [2021-08-06 13:16:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15012 to 10980. [2021-08-06 13:16:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10980 states, 10978 states have (on average 2.7589724904354163) internal successors, (30288), 10979 states have internal predecessors, (30288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10980 states to 10980 states and 30288 transitions. [2021-08-06 13:16:51,009 INFO L78 Accepts]: Start accepts. Automaton has 10980 states and 30288 transitions. Word has length 63 [2021-08-06 13:16:51,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:16:51,009 INFO L470 AbstractCegarLoop]: Abstraction has 10980 states and 30288 transitions. [2021-08-06 13:16:51,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 10980 states and 30288 transitions. [2021-08-06 13:16:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-06 13:16:51,022 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:16:51,023 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:16:51,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 13:16:51,023 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:16:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:16:51,031 INFO L82 PathProgramCache]: Analyzing trace with hash -54462006, now seen corresponding path program 1 times [2021-08-06 13:16:51,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:16:51,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023553467] [2021-08-06 13:16:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:51,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:16:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:16:51,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:16:51,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023553467] [2021-08-06 13:16:51,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023553467] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:16:51,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626558465] [2021-08-06 13:16:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:51,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:16:51,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:16:51,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:16:51,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-06 13:16:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:51,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-06 13:16:51,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:16:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:16:52,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626558465] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:16:52,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:16:52,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-06 13:16:52,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019491036] [2021-08-06 13:16:52,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:16:52,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:16:52,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:16:52,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:16:52,125 INFO L87 Difference]: Start difference. First operand 10980 states and 30288 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:52,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:16:52,387 INFO L93 Difference]: Finished difference Result 18555 states and 50921 transitions. [2021-08-06 13:16:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 13:16:52,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 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 88 [2021-08-06 13:16:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:16:52,448 INFO L225 Difference]: With dead ends: 18555 [2021-08-06 13:16:52,448 INFO L226 Difference]: Without dead ends: 18555 [2021-08-06 13:16:52,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:16:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18555 states. [2021-08-06 13:16:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18555 to 14604. [2021-08-06 13:16:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14604 states, 14602 states have (on average 2.753116011505273) internal successors, (40201), 14603 states have internal predecessors, (40201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14604 states to 14604 states and 40201 transitions. [2021-08-06 13:16:52,891 INFO L78 Accepts]: Start accepts. Automaton has 14604 states and 40201 transitions. Word has length 88 [2021-08-06 13:16:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:16:52,893 INFO L470 AbstractCegarLoop]: Abstraction has 14604 states and 40201 transitions. [2021-08-06 13:16:52,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand 14604 states and 40201 transitions. [2021-08-06 13:16:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-08-06 13:16:52,918 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:16:52,919 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:16:52,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-06 13:16:53,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:16:53,133 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:16:53,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:16:53,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1580919599, now seen corresponding path program 1 times [2021-08-06 13:16:53,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:16:53,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895676582] [2021-08-06 13:16:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:53,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:16:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-06 13:16:53,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:16:53,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895676582] [2021-08-06 13:16:53,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895676582] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:16:53,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:16:53,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 13:16:53,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140054868] [2021-08-06 13:16:53,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 13:16:53,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:16:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 13:16:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 13:16:53,252 INFO L87 Difference]: Start difference. First operand 14604 states and 40201 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:16:53,307 INFO L93 Difference]: Finished difference Result 6196 states and 15963 transitions. [2021-08-06 13:16:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 13:16:53,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 109 [2021-08-06 13:16:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:16:53,324 INFO L225 Difference]: With dead ends: 6196 [2021-08-06 13:16:53,324 INFO L226 Difference]: Without dead ends: 6076 [2021-08-06 13:16:53,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 13:16:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2021-08-06 13:16:53,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 5876. [2021-08-06 13:16:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 5874 states have (on average 2.5718420156622406) internal successors, (15107), 5875 states have internal predecessors, (15107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 15107 transitions. [2021-08-06 13:16:53,434 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 15107 transitions. Word has length 109 [2021-08-06 13:16:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:16:53,435 INFO L470 AbstractCegarLoop]: Abstraction has 5876 states and 15107 transitions. [2021-08-06 13:16:53,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 15107 transitions. [2021-08-06 13:16:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-08-06 13:16:53,448 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:16:53,449 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:16:53,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 13:16:53,449 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:16:53,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:16:53,449 INFO L82 PathProgramCache]: Analyzing trace with hash 442539787, now seen corresponding path program 2 times [2021-08-06 13:16:53,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:16:53,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531664027] [2021-08-06 13:16:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:53,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:16:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:16:53,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:16:53,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531664027] [2021-08-06 13:16:53,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531664027] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:16:53,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600068098] [2021-08-06 13:16:53,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:16:53,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:16:53,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:16:53,560 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:16:53,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-06 13:16:53,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:16:53,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:16:53,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-06 13:16:53,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:16:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:16:54,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600068098] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:16:54,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:16:54,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-08-06 13:16:54,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558494409] [2021-08-06 13:16:54,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 13:16:54,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:16:54,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 13:16:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-06 13:16:54,513 INFO L87 Difference]: Start difference. First operand 5876 states and 15107 transitions. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 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) [2021-08-06 13:16:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:16:54,674 INFO L93 Difference]: Finished difference Result 9595 states and 24725 transitions. [2021-08-06 13:16:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 13:16:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 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 122 [2021-08-06 13:16:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:16:54,700 INFO L225 Difference]: With dead ends: 9595 [2021-08-06 13:16:54,700 INFO L226 Difference]: Without dead ends: 9595 [2021-08-06 13:16:54,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:16:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9595 states. [2021-08-06 13:16:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9595 to 7678. [2021-08-06 13:16:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7678 states, 7676 states have (on average 2.568655549765503) internal successors, (19717), 7677 states have internal predecessors, (19717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 19717 transitions. [2021-08-06 13:16:54,957 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 19717 transitions. Word has length 122 [2021-08-06 13:16:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:16:54,957 INFO L470 AbstractCegarLoop]: Abstraction has 7678 states and 19717 transitions. [2021-08-06 13:16:54,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 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) [2021-08-06 13:16:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 19717 transitions. [2021-08-06 13:16:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-06 13:16:54,978 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:16:54,978 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:16:55,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-06 13:16:55,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:16:55,197 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:16:55,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:16:55,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1229222875, now seen corresponding path program 1 times [2021-08-06 13:16:55,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:16:55,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385136031] [2021-08-06 13:16:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:55,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:16:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:16:55,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:16:55,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385136031] [2021-08-06 13:16:55,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385136031] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:16:55,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271628186] [2021-08-06 13:16:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:55,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:16:55,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:16:55,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:16:55,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-06 13:16:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:55,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-06 13:16:55,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:16:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:16:56,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271628186] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:16:56,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:16:56,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-08-06 13:16:56,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667192670] [2021-08-06 13:16:56,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 13:16:56,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:16:56,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 13:16:56,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:16:56,313 INFO L87 Difference]: Start difference. First operand 7678 states and 19717 transitions. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:16:56,471 INFO L93 Difference]: Finished difference Result 11373 states and 29306 transitions. [2021-08-06 13:16:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 13:16:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-08-06 13:16:56,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:16:56,500 INFO L225 Difference]: With dead ends: 11373 [2021-08-06 13:16:56,500 INFO L226 Difference]: Without dead ends: 11373 [2021-08-06 13:16:56,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:16:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2021-08-06 13:16:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 8938. [2021-08-06 13:16:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8938 states, 8936 states have (on average 2.5924350940017904) internal successors, (23166), 8937 states have internal predecessors, (23166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 23166 transitions. [2021-08-06 13:16:56,759 INFO L78 Accepts]: Start accepts. Automaton has 8938 states and 23166 transitions. Word has length 123 [2021-08-06 13:16:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:16:56,759 INFO L470 AbstractCegarLoop]: Abstraction has 8938 states and 23166 transitions. [2021-08-06 13:16:56,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8938 states and 23166 transitions. [2021-08-06 13:16:56,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-08-06 13:16:56,779 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:16:56,779 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:16:56,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-06 13:16:56,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:16:56,985 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:16:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:16:56,986 INFO L82 PathProgramCache]: Analyzing trace with hash -522210292, now seen corresponding path program 3 times [2021-08-06 13:16:56,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:16:56,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515466098] [2021-08-06 13:16:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:56,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:16:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:16:57,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:16:57,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515466098] [2021-08-06 13:16:57,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515466098] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:16:57,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935958996] [2021-08-06 13:16:57,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:16:57,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:16:57,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:16:57,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:16:57,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-06 13:16:57,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-06 13:16:57,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:16:57,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-06 13:16:57,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:16:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:16:58,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935958996] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:16:58,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:16:58,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-08-06 13:16:58,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498736135] [2021-08-06 13:16:58,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 13:16:58,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:16:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 13:16:58,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:16:58,401 INFO L87 Difference]: Start difference. First operand 8938 states and 23166 transitions. Second operand has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:16:58,626 INFO L93 Difference]: Finished difference Result 13937 states and 35971 transitions. [2021-08-06 13:16:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-06 13:16:58,626 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 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 156 [2021-08-06 13:16:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:16:58,665 INFO L225 Difference]: With dead ends: 13937 [2021-08-06 13:16:58,666 INFO L226 Difference]: Without dead ends: 13937 [2021-08-06 13:16:58,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:16:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13937 states. [2021-08-06 13:16:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13937 to 10740. [2021-08-06 13:16:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10740 states, 10738 states have (on average 2.5867014341590613) internal successors, (27776), 10739 states have internal predecessors, (27776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10740 states to 10740 states and 27776 transitions. [2021-08-06 13:16:58,978 INFO L78 Accepts]: Start accepts. Automaton has 10740 states and 27776 transitions. Word has length 156 [2021-08-06 13:16:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:16:58,979 INFO L470 AbstractCegarLoop]: Abstraction has 10740 states and 27776 transitions. [2021-08-06 13:16:58,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:16:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 10740 states and 27776 transitions. [2021-08-06 13:16:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-08-06 13:16:58,999 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:16:58,999 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:16:59,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-06 13:16:59,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:16:59,221 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:16:59,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:16:59,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1855023366, now seen corresponding path program 2 times [2021-08-06 13:16:59,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:16:59,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064970099] [2021-08-06 13:16:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:16:59,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:16:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:16:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:16:59,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:16:59,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064970099] [2021-08-06 13:16:59,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064970099] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:16:59,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630818593] [2021-08-06 13:16:59,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:16:59,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:16:59,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:16:59,341 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:16:59,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-06 13:16:59,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:16:59,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:16:59,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-06 13:16:59,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:17:00,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630818593] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:00,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:00,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-08-06 13:17:00,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025319231] [2021-08-06 13:17:00,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 13:17:00,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 13:17:00,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-06 13:17:00,537 INFO L87 Difference]: Start difference. First operand 10740 states and 27776 transitions. Second operand has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:00,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:00,746 INFO L93 Difference]: Finished difference Result 15875 states and 41000 transitions. [2021-08-06 13:17:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-06 13:17:00,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 0 states have call successors, (0), 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 [2021-08-06 13:17:00,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:00,786 INFO L225 Difference]: With dead ends: 15875 [2021-08-06 13:17:00,786 INFO L226 Difference]: Without dead ends: 15875 [2021-08-06 13:17:00,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:17:00,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15875 states. [2021-08-06 13:17:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15875 to 12000. [2021-08-06 13:17:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12000 states, 11998 states have (on average 2.60251708618103) internal successors, (31225), 11999 states have internal predecessors, (31225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12000 states to 12000 states and 31225 transitions. [2021-08-06 13:17:01,081 INFO L78 Accepts]: Start accepts. Automaton has 12000 states and 31225 transitions. Word has length 157 [2021-08-06 13:17:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:01,081 INFO L470 AbstractCegarLoop]: Abstraction has 12000 states and 31225 transitions. [2021-08-06 13:17:01,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 12000 states and 31225 transitions. [2021-08-06 13:17:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-08-06 13:17:01,108 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:01,108 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:01,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:01,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:01,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1983006925, now seen corresponding path program 4 times [2021-08-06 13:17:01,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:01,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457373653] [2021-08-06 13:17:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:01,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:17:01,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:01,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457373653] [2021-08-06 13:17:01,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457373653] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:01,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274820189] [2021-08-06 13:17:01,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:17:01,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:01,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:01,497 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:01,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-06 13:17:01,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:17:01,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:01,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-06 13:17:01,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:17:03,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274820189] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:03,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:03,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-08-06 13:17:03,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107041266] [2021-08-06 13:17:03,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 13:17:03,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 13:17:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:17:03,106 INFO L87 Difference]: Start difference. First operand 12000 states and 31225 transitions. Second operand has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:03,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:03,334 INFO L93 Difference]: Finished difference Result 17199 states and 44580 transitions. [2021-08-06 13:17:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 13:17:03,335 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-08-06 13:17:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:03,369 INFO L225 Difference]: With dead ends: 17199 [2021-08-06 13:17:03,370 INFO L226 Difference]: Without dead ends: 17199 [2021-08-06 13:17:03,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=176, Invalid=330, Unknown=0, NotChecked=0, Total=506 [2021-08-06 13:17:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2021-08-06 13:17:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 13802. [2021-08-06 13:17:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 13800 states have (on average 2.5967391304347824) internal successors, (35835), 13801 states have internal predecessors, (35835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 35835 transitions. [2021-08-06 13:17:03,654 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 35835 transitions. Word has length 190 [2021-08-06 13:17:03,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:03,654 INFO L470 AbstractCegarLoop]: Abstraction has 13802 states and 35835 transitions. [2021-08-06 13:17:03,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 35835 transitions. [2021-08-06 13:17:03,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-08-06 13:17:03,683 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:03,684 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:03,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:03,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:03,890 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2135902819, now seen corresponding path program 3 times [2021-08-06 13:17:03,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:03,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732504949] [2021-08-06 13:17:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:03,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-06 13:17:04,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:04,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732504949] [2021-08-06 13:17:04,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732504949] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:04,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716959815] [2021-08-06 13:17:04,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:17:04,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:04,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:04,034 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:04,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-06 13:17:04,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-06 13:17:04,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:04,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-06 13:17:04,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 113 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:17:05,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716959815] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:05,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:05,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-08-06 13:17:05,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549548293] [2021-08-06 13:17:05,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 13:17:05,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:05,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 13:17:05,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-06 13:17:05,552 INFO L87 Difference]: Start difference. First operand 13802 states and 35835 transitions. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 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) [2021-08-06 13:17:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:05,763 INFO L93 Difference]: Finished difference Result 17787 states and 46053 transitions. [2021-08-06 13:17:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-06 13:17:05,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 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 191 [2021-08-06 13:17:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:05,797 INFO L225 Difference]: With dead ends: 17787 [2021-08-06 13:17:05,797 INFO L226 Difference]: Without dead ends: 17787 [2021-08-06 13:17:05,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 85.5ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:17:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17787 states. [2021-08-06 13:17:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17787 to 13802. [2021-08-06 13:17:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 13800 states have (on average 2.5967391304347824) internal successors, (35835), 13801 states have internal predecessors, (35835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 35835 transitions. [2021-08-06 13:17:06,181 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 35835 transitions. Word has length 191 [2021-08-06 13:17:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:06,182 INFO L470 AbstractCegarLoop]: Abstraction has 13802 states and 35835 transitions. [2021-08-06 13:17:06,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 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) [2021-08-06 13:17:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 35835 transitions. [2021-08-06 13:17:06,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-08-06 13:17:06,206 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:06,206 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:06,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:06,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:06,425 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:06,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:06,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1703883353, now seen corresponding path program 4 times [2021-08-06 13:17:06,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:06,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094449653] [2021-08-06 13:17:06,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:06,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 133 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:17:06,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:06,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094449653] [2021-08-06 13:17:06,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094449653] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:06,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641547969] [2021-08-06 13:17:06,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:17:06,556 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:06,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:06,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:06,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-06 13:17:07,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:17:07,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:07,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-06 13:17:07,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 133 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:17:08,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641547969] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:08,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:08,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-08-06 13:17:08,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405429522] [2021-08-06 13:17:08,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 13:17:08,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:08,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 13:17:08,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:17:08,147 INFO L87 Difference]: Start difference. First operand 13802 states and 35835 transitions. Second operand has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 12 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:08,381 INFO L93 Difference]: Finished difference Result 19137 states and 49609 transitions. [2021-08-06 13:17:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 13:17:08,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 12 states have internal predecessors, (235), 0 states have call successors, (0), 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 191 [2021-08-06 13:17:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:08,412 INFO L225 Difference]: With dead ends: 19137 [2021-08-06 13:17:08,412 INFO L226 Difference]: Without dead ends: 19137 [2021-08-06 13:17:08,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-08-06 13:17:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19137 states. [2021-08-06 13:17:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19137 to 13802. [2021-08-06 13:17:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 13800 states have (on average 2.5967391304347824) internal successors, (35835), 13801 states have internal predecessors, (35835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 35835 transitions. [2021-08-06 13:17:08,651 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 35835 transitions. Word has length 191 [2021-08-06 13:17:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:08,652 INFO L470 AbstractCegarLoop]: Abstraction has 13802 states and 35835 transitions. [2021-08-06 13:17:08,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 12 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 35835 transitions. [2021-08-06 13:17:08,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-08-06 13:17:08,670 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:08,670 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:08,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-08-06 13:17:08,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-06 13:17:08,885 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:08,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1638458991, now seen corresponding path program 1 times [2021-08-06 13:17:08,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:08,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337471696] [2021-08-06 13:17:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:08,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 148 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-06 13:17:09,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:09,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337471696] [2021-08-06 13:17:09,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337471696] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:09,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54156617] [2021-08-06 13:17:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:09,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:09,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:09,045 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:09,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-06 13:17:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:09,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:17:09,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 124 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-08-06 13:17:10,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54156617] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:10,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:10,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-08-06 13:17:10,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524097783] [2021-08-06 13:17:10,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 13:17:10,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 13:17:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:17:10,891 INFO L87 Difference]: Start difference. First operand 13802 states and 35835 transitions. Second operand has 11 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 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) [2021-08-06 13:17:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:11,137 INFO L93 Difference]: Finished difference Result 24997 states and 64918 transitions. [2021-08-06 13:17:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-06 13:17:11,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 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 220 [2021-08-06 13:17:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:11,180 INFO L225 Difference]: With dead ends: 24997 [2021-08-06 13:17:11,180 INFO L226 Difference]: Without dead ends: 24997 [2021-08-06 13:17:11,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-08-06 13:17:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24997 states. [2021-08-06 13:17:11,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24997 to 14962. [2021-08-06 13:17:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14962 states, 14960 states have (on average 2.606216577540107) internal successors, (38989), 14961 states have internal predecessors, (38989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14962 states to 14962 states and 38989 transitions. [2021-08-06 13:17:11,468 INFO L78 Accepts]: Start accepts. Automaton has 14962 states and 38989 transitions. Word has length 220 [2021-08-06 13:17:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:11,469 INFO L470 AbstractCegarLoop]: Abstraction has 14962 states and 38989 transitions. [2021-08-06 13:17:11,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 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) [2021-08-06 13:17:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 14962 states and 38989 transitions. [2021-08-06 13:17:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-08-06 13:17:11,494 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:11,494 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:11,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-08-06 13:17:11,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:11,709 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:11,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:11,709 INFO L82 PathProgramCache]: Analyzing trace with hash 256404814, now seen corresponding path program 5 times [2021-08-06 13:17:11,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:11,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504255109] [2021-08-06 13:17:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:11,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:17:11,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:11,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504255109] [2021-08-06 13:17:11,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504255109] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:11,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591204614] [2021-08-06 13:17:11,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:17:11,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:11,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:11,861 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:11,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-06 13:17:12,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-06 13:17:12,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:12,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:17:12,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:17:13,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591204614] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:13,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:13,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-08-06 13:17:13,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312604488] [2021-08-06 13:17:13,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:17:13,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:17:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:17:13,621 INFO L87 Difference]: Start difference. First operand 14962 states and 38989 transitions. Second operand has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:13,915 INFO L93 Difference]: Finished difference Result 20871 states and 54084 transitions. [2021-08-06 13:17:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:17:13,916 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 states have internal predecessors, (271), 0 states have call successors, (0), 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 224 [2021-08-06 13:17:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:13,947 INFO L225 Difference]: With dead ends: 20871 [2021-08-06 13:17:13,948 INFO L226 Difference]: Without dead ends: 20871 [2021-08-06 13:17:13,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 165.9ms TimeCoverageRelationStatistics Valid=241, Invalid=461, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:17:14,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20871 states. [2021-08-06 13:17:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20871 to 16764. [2021-08-06 13:17:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16764 states, 16762 states have (on average 2.6010619257845127) internal successors, (43599), 16763 states have internal predecessors, (43599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 43599 transitions. [2021-08-06 13:17:14,228 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 43599 transitions. Word has length 224 [2021-08-06 13:17:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:14,228 INFO L470 AbstractCegarLoop]: Abstraction has 16764 states and 43599 transitions. [2021-08-06 13:17:14,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 43599 transitions. [2021-08-06 13:17:14,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-08-06 13:17:14,254 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:14,254 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:14,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:14,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-06 13:17:14,469 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:14,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:14,469 INFO L82 PathProgramCache]: Analyzing trace with hash -79190498, now seen corresponding path program 5 times [2021-08-06 13:17:14,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:14,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471977198] [2021-08-06 13:17:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:14,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 253 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-06 13:17:14,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:14,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471977198] [2021-08-06 13:17:14,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471977198] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:14,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186808410] [2021-08-06 13:17:14,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:17:14,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:14,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:14,621 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:14,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-06 13:17:15,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-06 13:17:15,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:15,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:17:15,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 230 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:17:16,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186808410] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:16,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:16,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-08-06 13:17:16,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441929894] [2021-08-06 13:17:16,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 13:17:16,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:16,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 13:17:16,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:17:16,429 INFO L87 Difference]: Start difference. First operand 16764 states and 43599 transitions. Second operand has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:16,637 INFO L93 Difference]: Finished difference Result 23844 states and 61943 transitions. [2021-08-06 13:17:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:17:16,637 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 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 225 [2021-08-06 13:17:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:16,677 INFO L225 Difference]: With dead ends: 23844 [2021-08-06 13:17:16,677 INFO L226 Difference]: Without dead ends: 23844 [2021-08-06 13:17:16,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 116.0ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-08-06 13:17:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23844 states. [2021-08-06 13:17:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23844 to 18704. [2021-08-06 13:17:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18704 states, 18702 states have (on average 2.6167254839054648) internal successors, (48938), 18703 states have internal predecessors, (48938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18704 states to 18704 states and 48938 transitions. [2021-08-06 13:17:16,967 INFO L78 Accepts]: Start accepts. Automaton has 18704 states and 48938 transitions. Word has length 225 [2021-08-06 13:17:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:16,967 INFO L470 AbstractCegarLoop]: Abstraction has 18704 states and 48938 transitions. [2021-08-06 13:17:16,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 18704 states and 48938 transitions. [2021-08-06 13:17:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-08-06 13:17:16,989 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:16,989 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:17,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-08-06 13:17:17,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-06 13:17:17,195 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:17,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1285965508, now seen corresponding path program 6 times [2021-08-06 13:17:17,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:17,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564080610] [2021-08-06 13:17:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:17,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 230 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:17:17,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:17,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564080610] [2021-08-06 13:17:17,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564080610] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:17,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719927694] [2021-08-06 13:17:17,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:17:17,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:17,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:17,325 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:17,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-06 13:17:18,295 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-06 13:17:18,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:18,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:17:18,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 230 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:17:19,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719927694] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:19,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:19,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-08-06 13:17:19,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42720432] [2021-08-06 13:17:19,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 13:17:19,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:19,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 13:17:19,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:17:19,405 INFO L87 Difference]: Start difference. First operand 18704 states and 48938 transitions. Second operand has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:19,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:19,659 INFO L93 Difference]: Finished difference Result 30389 states and 79003 transitions. [2021-08-06 13:17:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:17:19,660 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 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 225 [2021-08-06 13:17:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:19,710 INFO L225 Difference]: With dead ends: 30389 [2021-08-06 13:17:19,710 INFO L226 Difference]: Without dead ends: 30389 [2021-08-06 13:17:19,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2021-08-06 13:17:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30389 states. [2021-08-06 13:17:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30389 to 19964. [2021-08-06 13:17:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 19962 states have (on average 2.624336238853822) internal successors, (52387), 19963 states have internal predecessors, (52387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 52387 transitions. [2021-08-06 13:17:20,051 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 52387 transitions. Word has length 225 [2021-08-06 13:17:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:20,052 INFO L470 AbstractCegarLoop]: Abstraction has 19964 states and 52387 transitions. [2021-08-06 13:17:20,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 52387 transitions. [2021-08-06 13:17:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-08-06 13:17:20,075 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:20,075 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:20,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:20,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-06 13:17:20,275 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:20,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1741146632, now seen corresponding path program 7 times [2021-08-06 13:17:20,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:20,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356785175] [2021-08-06 13:17:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:20,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 250 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:17:20,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:20,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356785175] [2021-08-06 13:17:20,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356785175] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:20,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613100692] [2021-08-06 13:17:20,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:17:20,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:20,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:20,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:20,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-06 13:17:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:21,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:17:21,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 250 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:17:22,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613100692] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:22,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:22,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-08-06 13:17:22,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332759986] [2021-08-06 13:17:22,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:17:22,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:22,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:17:22,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:17:22,464 INFO L87 Difference]: Start difference. First operand 19964 states and 52387 transitions. Second operand has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:22,751 INFO L93 Difference]: Finished difference Result 29709 states and 77502 transitions. [2021-08-06 13:17:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:17:22,752 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 0 states have call successors, (0), 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 225 [2021-08-06 13:17:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:22,801 INFO L225 Difference]: With dead ends: 29709 [2021-08-06 13:17:22,801 INFO L226 Difference]: Without dead ends: 29709 [2021-08-06 13:17:22,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2021-08-06 13:17:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29709 states. [2021-08-06 13:17:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29709 to 19964. [2021-08-06 13:17:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 19962 states have (on average 2.624336238853822) internal successors, (52387), 19963 states have internal predecessors, (52387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 52387 transitions. [2021-08-06 13:17:23,139 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 52387 transitions. Word has length 225 [2021-08-06 13:17:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:23,140 INFO L470 AbstractCegarLoop]: Abstraction has 19964 states and 52387 transitions. [2021-08-06 13:17:23,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 52387 transitions. [2021-08-06 13:17:23,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-08-06 13:17:23,164 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:23,164 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:23,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:23,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-06 13:17:23,380 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:23,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:23,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1954192242, now seen corresponding path program 2 times [2021-08-06 13:17:23,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:23,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354727912] [2021-08-06 13:17:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:23,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 265 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-06 13:17:23,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:23,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354727912] [2021-08-06 13:17:23,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354727912] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:23,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847738117] [2021-08-06 13:17:23,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:17:23,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:23,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:23,539 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:23,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-06 13:17:24,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:17:24,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:24,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:17:24,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 241 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-08-06 13:17:25,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847738117] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:25,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:25,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-08-06 13:17:25,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467983546] [2021-08-06 13:17:25,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 13:17:25,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:25,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 13:17:25,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:17:25,773 INFO L87 Difference]: Start difference. First operand 19964 states and 52387 transitions. Second operand has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:26,100 INFO L93 Difference]: Finished difference Result 33419 states and 87480 transitions. [2021-08-06 13:17:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:17:26,100 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 0 states have call successors, (0), 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 254 [2021-08-06 13:17:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:26,156 INFO L225 Difference]: With dead ends: 33419 [2021-08-06 13:17:26,156 INFO L226 Difference]: Without dead ends: 33419 [2021-08-06 13:17:26,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-08-06 13:17:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33419 states. [2021-08-06 13:17:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33419 to 19964. [2021-08-06 13:17:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 19962 states have (on average 2.624336238853822) internal successors, (52387), 19963 states have internal predecessors, (52387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 52387 transitions. [2021-08-06 13:17:26,504 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 52387 transitions. Word has length 254 [2021-08-06 13:17:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:26,505 INFO L470 AbstractCegarLoop]: Abstraction has 19964 states and 52387 transitions. [2021-08-06 13:17:26,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 52387 transitions. [2021-08-06 13:17:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-08-06 13:17:26,529 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:26,529 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:26,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:26,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:26,730 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:26,731 INFO L82 PathProgramCache]: Analyzing trace with hash 752966448, now seen corresponding path program 3 times [2021-08-06 13:17:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:26,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95729769] [2021-08-06 13:17:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:26,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 242 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-08-06 13:17:26,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:26,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95729769] [2021-08-06 13:17:26,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95729769] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:26,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74018098] [2021-08-06 13:17:26,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:17:26,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:26,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:26,881 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:26,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-06 13:17:27,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-06 13:17:27,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:27,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-06 13:17:27,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-08-06 13:17:29,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74018098] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:17:29,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-06 13:17:29,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-08-06 13:17:29,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699744596] [2021-08-06 13:17:29,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:17:29,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:29,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:17:29,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:17:29,105 INFO L87 Difference]: Start difference. First operand 19964 states and 52387 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:29,313 INFO L93 Difference]: Finished difference Result 26914 states and 70438 transitions. [2021-08-06 13:17:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:17:29,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 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 254 [2021-08-06 13:17:29,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:29,368 INFO L225 Difference]: With dead ends: 26914 [2021-08-06 13:17:29,368 INFO L226 Difference]: Without dead ends: 26914 [2021-08-06 13:17:29,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 133.2ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-08-06 13:17:29,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26914 states. [2021-08-06 13:17:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26914 to 20644. [2021-08-06 13:17:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20644 states, 20642 states have (on average 2.627700804185641) internal successors, (54241), 20643 states have internal predecessors, (54241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20644 states to 20644 states and 54241 transitions. [2021-08-06 13:17:29,761 INFO L78 Accepts]: Start accepts. Automaton has 20644 states and 54241 transitions. Word has length 254 [2021-08-06 13:17:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:29,761 INFO L470 AbstractCegarLoop]: Abstraction has 20644 states and 54241 transitions. [2021-08-06 13:17:29,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 20644 states and 54241 transitions. [2021-08-06 13:17:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-08-06 13:17:29,785 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:29,785 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:29,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-08-06 13:17:29,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-06 13:17:29,991 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:29,992 INFO L82 PathProgramCache]: Analyzing trace with hash 823013775, now seen corresponding path program 6 times [2021-08-06 13:17:29,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:29,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078737290] [2021-08-06 13:17:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:29,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:17:30,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:30,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078737290] [2021-08-06 13:17:30,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078737290] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:30,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106586451] [2021-08-06 13:17:30,198 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:17:30,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:30,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:30,201 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:30,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-06 13:17:31,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-06 13:17:31,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:31,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:17:31,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:17:32,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106586451] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:32,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:32,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-08-06 13:17:32,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953740782] [2021-08-06 13:17:32,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:17:32,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:32,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:17:32,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:17:32,758 INFO L87 Difference]: Start difference. First operand 20644 states and 54241 transitions. Second operand has 17 states, 17 states have (on average 17.941176470588236) internal successors, (305), 17 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:33,095 INFO L93 Difference]: Finished difference Result 27943 states and 72966 transitions. [2021-08-06 13:17:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-06 13:17:33,095 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.941176470588236) internal successors, (305), 17 states have internal predecessors, (305), 0 states have call successors, (0), 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 258 [2021-08-06 13:17:33,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:33,142 INFO L225 Difference]: With dead ends: 27943 [2021-08-06 13:17:33,142 INFO L226 Difference]: Without dead ends: 27943 [2021-08-06 13:17:33,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 195.0ms TimeCoverageRelationStatistics Valid=316, Invalid=614, Unknown=0, NotChecked=0, Total=930 [2021-08-06 13:17:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27943 states. [2021-08-06 13:17:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27943 to 22446. [2021-08-06 13:17:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22446 states, 22444 states have (on average 2.62212618071645) internal successors, (58851), 22445 states have internal predecessors, (58851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22446 states to 22446 states and 58851 transitions. [2021-08-06 13:17:33,610 INFO L78 Accepts]: Start accepts. Automaton has 22446 states and 58851 transitions. Word has length 258 [2021-08-06 13:17:33,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:33,610 INFO L470 AbstractCegarLoop]: Abstraction has 22446 states and 58851 transitions. [2021-08-06 13:17:33,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.941176470588236) internal successors, (305), 17 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:33,610 INFO L276 IsEmpty]: Start isEmpty. Operand 22446 states and 58851 transitions. [2021-08-06 13:17:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-08-06 13:17:33,635 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:33,635 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:33,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-08-06 13:17:33,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:33,836 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:33,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:33,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1465595487, now seen corresponding path program 8 times [2021-08-06 13:17:33,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:33,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218732416] [2021-08-06 13:17:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:33,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 404 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-06 13:17:33,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:33,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218732416] [2021-08-06 13:17:33,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218732416] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:33,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077209064] [2021-08-06 13:17:33,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:17:33,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:33,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:33,994 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:33,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-06 13:17:35,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:17:35,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:35,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:17:35,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:17:36,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077209064] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:36,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:36,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-08-06 13:17:36,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866783512] [2021-08-06 13:17:36,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:17:36,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:36,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:17:36,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:17:36,481 INFO L87 Difference]: Start difference. First operand 22446 states and 58851 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:36,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:36,755 INFO L93 Difference]: Finished difference Result 29176 states and 76036 transitions. [2021-08-06 13:17:36,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:17:36,756 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 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 259 [2021-08-06 13:17:36,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:36,804 INFO L225 Difference]: With dead ends: 29176 [2021-08-06 13:17:36,804 INFO L226 Difference]: Without dead ends: 29176 [2021-08-06 13:17:36,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-08-06 13:17:36,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29176 states. [2021-08-06 13:17:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29176 to 23126. [2021-08-06 13:17:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23126 states, 23124 states have (on average 2.626751427088739) internal successors, (60741), 23125 states have internal predecessors, (60741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23126 states to 23126 states and 60741 transitions. [2021-08-06 13:17:37,315 INFO L78 Accepts]: Start accepts. Automaton has 23126 states and 60741 transitions. Word has length 259 [2021-08-06 13:17:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:37,316 INFO L470 AbstractCegarLoop]: Abstraction has 23126 states and 60741 transitions. [2021-08-06 13:17:37,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 23126 states and 60741 transitions. [2021-08-06 13:17:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-08-06 13:17:37,343 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:37,343 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:37,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:37,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:37,543 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:37,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1366359555, now seen corresponding path program 9 times [2021-08-06 13:17:37,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:37,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611582481] [2021-08-06 13:17:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:37,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:17:37,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:37,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611582481] [2021-08-06 13:17:37,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611582481] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:37,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262313436] [2021-08-06 13:17:37,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:17:37,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:37,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:37,709 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:37,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-06 13:17:39,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-06 13:17:39,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:39,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:17:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:17:40,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262313436] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:40,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:40,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-08-06 13:17:40,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874976222] [2021-08-06 13:17:40,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:17:40,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:40,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:17:40,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:17:40,433 INFO L87 Difference]: Start difference. First operand 23126 states and 60741 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:40,776 INFO L93 Difference]: Finished difference Result 34101 states and 89002 transitions. [2021-08-06 13:17:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:17:40,777 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 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 259 [2021-08-06 13:17:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:40,851 INFO L225 Difference]: With dead ends: 34101 [2021-08-06 13:17:40,851 INFO L226 Difference]: Without dead ends: 34101 [2021-08-06 13:17:40,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-08-06 13:17:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34101 states. [2021-08-06 13:17:41,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34101 to 25066. [2021-08-06 13:17:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25066 states, 25064 states have (on average 2.6364506862432173) internal successors, (66080), 25065 states have internal predecessors, (66080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25066 states to 25066 states and 66080 transitions. [2021-08-06 13:17:41,405 INFO L78 Accepts]: Start accepts. Automaton has 25066 states and 66080 transitions. Word has length 259 [2021-08-06 13:17:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:41,405 INFO L470 AbstractCegarLoop]: Abstraction has 25066 states and 66080 transitions. [2021-08-06 13:17:41,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 25066 states and 66080 transitions. [2021-08-06 13:17:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-08-06 13:17:41,443 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:41,444 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:41,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:41,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:41,645 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:41,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:41,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1721832731, now seen corresponding path program 10 times [2021-08-06 13:17:41,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:41,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574783907] [2021-08-06 13:17:41,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:41,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:17:41,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:41,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574783907] [2021-08-06 13:17:41,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574783907] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:41,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178060885] [2021-08-06 13:17:41,801 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:17:41,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:41,802 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:41,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-06 13:17:43,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:17:43,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:43,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:17:43,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:17:44,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178060885] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:44,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:44,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-08-06 13:17:44,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600882894] [2021-08-06 13:17:44,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:17:44,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:17:44,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:17:44,620 INFO L87 Difference]: Start difference. First operand 25066 states and 66080 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:45,034 INFO L93 Difference]: Finished difference Result 34341 states and 90071 transitions. [2021-08-06 13:17:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:17:45,034 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 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 259 [2021-08-06 13:17:45,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:45,090 INFO L225 Difference]: With dead ends: 34341 [2021-08-06 13:17:45,090 INFO L226 Difference]: Without dead ends: 34341 [2021-08-06 13:17:45,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:17:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34341 states. [2021-08-06 13:17:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34341 to 26326. [2021-08-06 13:17:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26326 states, 26324 states have (on average 2.641277921288558) internal successors, (69529), 26325 states have internal predecessors, (69529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26326 states to 26326 states and 69529 transitions. [2021-08-06 13:17:45,557 INFO L78 Accepts]: Start accepts. Automaton has 26326 states and 69529 transitions. Word has length 259 [2021-08-06 13:17:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:45,557 INFO L470 AbstractCegarLoop]: Abstraction has 26326 states and 69529 transitions. [2021-08-06 13:17:45,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 26326 states and 69529 transitions. [2021-08-06 13:17:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-08-06 13:17:45,593 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:45,594 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:45,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:45,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:45,794 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:45,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1218539012, now seen corresponding path program 4 times [2021-08-06 13:17:45,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:45,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647718913] [2021-08-06 13:17:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:45,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 51 proven. 219 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-08-06 13:17:45,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:45,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647718913] [2021-08-06 13:17:45,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647718913] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:45,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295307125] [2021-08-06 13:17:45,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:17:45,981 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:45,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:45,985 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:46,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-06 13:17:47,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:17:47,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:47,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:17:47,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 51 proven. 219 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-08-06 13:17:49,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295307125] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:49,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:49,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-08-06 13:17:49,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869432647] [2021-08-06 13:17:49,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 13:17:49,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 13:17:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:17:49,104 INFO L87 Difference]: Start difference. First operand 26326 states and 69529 transitions. Second operand has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:49,404 INFO L93 Difference]: Finished difference Result 41691 states and 109020 transitions. [2021-08-06 13:17:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:17:49,404 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2021-08-06 13:17:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:49,473 INFO L225 Difference]: With dead ends: 41691 [2021-08-06 13:17:49,474 INFO L226 Difference]: Without dead ends: 41691 [2021-08-06 13:17:49,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-08-06 13:17:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41691 states. [2021-08-06 13:17:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41691 to 29426. [2021-08-06 13:17:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29426 states, 29424 states have (on average 2.6516449157150626) internal successors, (78022), 29425 states have internal predecessors, (78022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29426 states to 29426 states and 78022 transitions. [2021-08-06 13:17:50,026 INFO L78 Accepts]: Start accepts. Automaton has 29426 states and 78022 transitions. Word has length 283 [2021-08-06 13:17:50,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:50,027 INFO L470 AbstractCegarLoop]: Abstraction has 29426 states and 78022 transitions. [2021-08-06 13:17:50,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 29426 states and 78022 transitions. [2021-08-06 13:17:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-08-06 13:17:50,068 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:50,068 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:50,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:50,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-08-06 13:17:50,269 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:50,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:50,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2082676273, now seen corresponding path program 5 times [2021-08-06 13:17:50,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:50,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687024298] [2021-08-06 13:17:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:50,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 15 proven. 396 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-06 13:17:50,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:50,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687024298] [2021-08-06 13:17:50,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687024298] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:50,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859470159] [2021-08-06 13:17:50,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:17:50,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:50,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:50,465 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:50,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-06 13:17:52,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-06 13:17:52,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:52,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:17:52,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 15 proven. 372 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-08-06 13:17:53,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859470159] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:53,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:53,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-08-06 13:17:53,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201696579] [2021-08-06 13:17:53,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 13:17:53,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 13:17:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:17:53,711 INFO L87 Difference]: Start difference. First operand 29426 states and 78022 transitions. Second operand has 13 states, 13 states have (on average 21.23076923076923) internal successors, (276), 13 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:54,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:54,004 INFO L93 Difference]: Finished difference Result 39436 states and 103060 transitions. [2021-08-06 13:17:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:17:54,004 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.23076923076923) internal successors, (276), 13 states have internal predecessors, (276), 0 states have call successors, (0), 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 288 [2021-08-06 13:17:54,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:54,071 INFO L225 Difference]: With dead ends: 39436 [2021-08-06 13:17:54,071 INFO L226 Difference]: Without dead ends: 39436 [2021-08-06 13:17:54,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 131.6ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-08-06 13:17:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39436 states. [2021-08-06 13:17:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39436 to 27486. [2021-08-06 13:17:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27486 states, 27484 states have (on average 2.6445568330665115) internal successors, (72683), 27485 states have internal predecessors, (72683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27486 states to 27486 states and 72683 transitions. [2021-08-06 13:17:54,570 INFO L78 Accepts]: Start accepts. Automaton has 27486 states and 72683 transitions. Word has length 288 [2021-08-06 13:17:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:17:54,570 INFO L470 AbstractCegarLoop]: Abstraction has 27486 states and 72683 transitions. [2021-08-06 13:17:54,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.23076923076923) internal successors, (276), 13 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 27486 states and 72683 transitions. [2021-08-06 13:17:54,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-08-06 13:17:54,610 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:17:54,610 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:17:54,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-06 13:17:54,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-06 13:17:54,813 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:17:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:17:54,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1281692483, now seen corresponding path program 6 times [2021-08-06 13:17:54,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:17:54,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920031350] [2021-08-06 13:17:54,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:17:54,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:17:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:17:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 54 proven. 388 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:17:55,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:17:55,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920031350] [2021-08-06 13:17:55,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920031350] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:55,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464126112] [2021-08-06 13:17:55,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:17:55,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:17:55,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:17:55,003 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:17:55,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-06 13:17:57,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-06 13:17:57,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:17:57,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-06 13:17:57,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:17:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 250 proven. 59 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-06 13:17:58,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464126112] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:17:58,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:17:58,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2021-08-06 13:17:58,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479891357] [2021-08-06 13:17:58,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-06 13:17:58,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:17:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-06 13:17:58,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-08-06 13:17:58,411 INFO L87 Difference]: Start difference. First operand 27486 states and 72683 transitions. Second operand has 22 states, 22 states have (on average 21.136363636363637) internal successors, (465), 22 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:17:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:17:59,173 INFO L93 Difference]: Finished difference Result 56766 states and 149064 transitions. [2021-08-06 13:17:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-06 13:17:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 21.136363636363637) internal successors, (465), 22 states have internal predecessors, (465), 0 states have call successors, (0), 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 288 [2021-08-06 13:17:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:17:59,289 INFO L225 Difference]: With dead ends: 56766 [2021-08-06 13:17:59,289 INFO L226 Difference]: Without dead ends: 56766 [2021-08-06 13:17:59,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 512.6ms TimeCoverageRelationStatistics Valid=623, Invalid=2029, Unknown=0, NotChecked=0, Total=2652 [2021-08-06 13:17:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56766 states. [2021-08-06 13:17:59,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56766 to 30626. [2021-08-06 13:18:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30626 states, 30624 states have (on average 2.658894984326019) internal successors, (81426), 30625 states have internal predecessors, (81426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30626 states to 30626 states and 81426 transitions. [2021-08-06 13:18:00,062 INFO L78 Accepts]: Start accepts. Automaton has 30626 states and 81426 transitions. Word has length 288 [2021-08-06 13:18:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:00,063 INFO L470 AbstractCegarLoop]: Abstraction has 30626 states and 81426 transitions. [2021-08-06 13:18:00,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 21.136363636363637) internal successors, (465), 22 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:00,063 INFO L276 IsEmpty]: Start isEmpty. Operand 30626 states and 81426 transitions. [2021-08-06 13:18:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-08-06 13:18:00,102 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:00,102 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:00,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:00,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:00,303 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1318345328, now seen corresponding path program 7 times [2021-08-06 13:18:00,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:00,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173692669] [2021-08-06 13:18:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:00,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:00,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:00,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173692669] [2021-08-06 13:18:00,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173692669] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:00,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855864483] [2021-08-06 13:18:00,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:18:00,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:00,515 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:00,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-06 13:18:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:02,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:18:02,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:04,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855864483] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:04,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:04,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-08-06 13:18:04,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938521899] [2021-08-06 13:18:04,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:18:04,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:18:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:18:04,060 INFO L87 Difference]: Start difference. First operand 30626 states and 81426 transitions. Second operand has 19 states, 19 states have (on average 17.842105263157894) internal successors, (339), 19 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:04,449 INFO L93 Difference]: Finished difference Result 39095 states and 103168 transitions. [2021-08-06 13:18:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-06 13:18:04,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 17.842105263157894) internal successors, (339), 19 states have internal predecessors, (339), 0 states have call successors, (0), 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 292 [2021-08-06 13:18:04,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:04,517 INFO L225 Difference]: With dead ends: 39095 [2021-08-06 13:18:04,517 INFO L226 Difference]: Without dead ends: 39095 [2021-08-06 13:18:04,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 244.8ms TimeCoverageRelationStatistics Valid=401, Invalid=789, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:18:04,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39095 states. [2021-08-06 13:18:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39095 to 33108. [2021-08-06 13:18:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33108 states, 33106 states have (on average 2.6558931915664834) internal successors, (87926), 33107 states have internal predecessors, (87926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33108 states to 33108 states and 87926 transitions. [2021-08-06 13:18:05,087 INFO L78 Accepts]: Start accepts. Automaton has 33108 states and 87926 transitions. Word has length 292 [2021-08-06 13:18:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:05,087 INFO L470 AbstractCegarLoop]: Abstraction has 33108 states and 87926 transitions. [2021-08-06 13:18:05,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.842105263157894) internal successors, (339), 19 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 33108 states and 87926 transitions. [2021-08-06 13:18:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-08-06 13:18:05,129 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:05,129 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:05,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:05,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:05,338 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:05,338 INFO L82 PathProgramCache]: Analyzing trace with hash -141330848, now seen corresponding path program 11 times [2021-08-06 13:18:05,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:05,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125286292] [2021-08-06 13:18:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:05,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 589 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-06 13:18:05,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:05,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125286292] [2021-08-06 13:18:05,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125286292] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:05,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756416112] [2021-08-06 13:18:05,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:18:05,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:05,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:05,541 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:05,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-06 13:18:07,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-08-06 13:18:07,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:07,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:18:07,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:18:09,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756416112] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:09,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:09,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 16 [2021-08-06 13:18:09,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887280906] [2021-08-06 13:18:09,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-06 13:18:09,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:09,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-06 13:18:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-08-06 13:18:09,251 INFO L87 Difference]: Start difference. First operand 33108 states and 87926 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:09,687 INFO L93 Difference]: Finished difference Result 41038 states and 107978 transitions. [2021-08-06 13:18:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 13:18:09,688 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 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 293 [2021-08-06 13:18:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:09,754 INFO L225 Difference]: With dead ends: 41038 [2021-08-06 13:18:09,754 INFO L226 Difference]: Without dead ends: 41038 [2021-08-06 13:18:09,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 182.4ms TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2021-08-06 13:18:09,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41038 states. [2021-08-06 13:18:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41038 to 33108. [2021-08-06 13:18:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33108 states, 33106 states have (on average 2.6558931915664834) internal successors, (87926), 33107 states have internal predecessors, (87926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33108 states to 33108 states and 87926 transitions. [2021-08-06 13:18:10,315 INFO L78 Accepts]: Start accepts. Automaton has 33108 states and 87926 transitions. Word has length 293 [2021-08-06 13:18:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:10,315 INFO L470 AbstractCegarLoop]: Abstraction has 33108 states and 87926 transitions. [2021-08-06 13:18:10,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 33108 states and 87926 transitions. [2021-08-06 13:18:10,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-08-06 13:18:10,365 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:10,365 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:10,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:10,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-06 13:18:10,566 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:10,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:10,566 INFO L82 PathProgramCache]: Analyzing trace with hash 467327614, now seen corresponding path program 12 times [2021-08-06 13:18:10,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:10,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853665723] [2021-08-06 13:18:10,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:10,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:18:10,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:10,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853665723] [2021-08-06 13:18:10,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853665723] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:10,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076688880] [2021-08-06 13:18:10,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:18:10,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:10,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:10,743 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:10,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-06 13:18:13,129 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-06 13:18:13,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:13,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:18:13,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:18:14,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076688880] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:14,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:14,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-08-06 13:18:14,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857609716] [2021-08-06 13:18:14,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-06 13:18:14,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:14,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-06 13:18:14,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-08-06 13:18:14,519 INFO L87 Difference]: Start difference. First operand 33108 states and 87926 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:15,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:15,019 INFO L93 Difference]: Finished difference Result 46473 states and 122134 transitions. [2021-08-06 13:18:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 13:18:15,019 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 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 293 [2021-08-06 13:18:15,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:15,095 INFO L225 Difference]: With dead ends: 46473 [2021-08-06 13:18:15,095 INFO L226 Difference]: Without dead ends: 46473 [2021-08-06 13:18:15,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 187.0ms TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2021-08-06 13:18:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46473 states. [2021-08-06 13:18:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46473 to 34368. [2021-08-06 13:18:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34368 states, 34366 states have (on average 2.6588779607751847) internal successors, (91375), 34367 states have internal predecessors, (91375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34368 states to 34368 states and 91375 transitions. [2021-08-06 13:18:15,678 INFO L78 Accepts]: Start accepts. Automaton has 34368 states and 91375 transitions. Word has length 293 [2021-08-06 13:18:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:15,679 INFO L470 AbstractCegarLoop]: Abstraction has 34368 states and 91375 transitions. [2021-08-06 13:18:15,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 34368 states and 91375 transitions. [2021-08-06 13:18:15,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-08-06 13:18:15,725 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:15,725 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:15,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:15,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-06 13:18:15,926 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:15,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:15,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1930339868, now seen corresponding path program 13 times [2021-08-06 13:18:15,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:15,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838129267] [2021-08-06 13:18:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:15,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:18:16,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:16,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838129267] [2021-08-06 13:18:16,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838129267] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:16,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445761382] [2021-08-06 13:18:16,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:18:16,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:16,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:16,109 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:16,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-06 13:18:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:18,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:18:18,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:18:19,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445761382] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:19,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:19,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-08-06 13:18:19,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534784072] [2021-08-06 13:18:19,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-06 13:18:19,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-06 13:18:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-08-06 13:18:19,834 INFO L87 Difference]: Start difference. First operand 34368 states and 91375 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:20,323 INFO L93 Difference]: Finished difference Result 46513 states and 122653 transitions. [2021-08-06 13:18:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-06 13:18:20,323 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 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 293 [2021-08-06 13:18:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:20,397 INFO L225 Difference]: With dead ends: 46513 [2021-08-06 13:18:20,398 INFO L226 Difference]: Without dead ends: 46513 [2021-08-06 13:18:20,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 184.9ms TimeCoverageRelationStatistics Valid=267, Invalid=663, Unknown=0, NotChecked=0, Total=930 [2021-08-06 13:18:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46513 states. [2021-08-06 13:18:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46513 to 36308. [2021-08-06 13:18:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 36306 states have (on average 2.6638572136836887) internal successors, (96714), 36307 states have internal predecessors, (96714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 96714 transitions. [2021-08-06 13:18:21,032 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 96714 transitions. Word has length 293 [2021-08-06 13:18:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:21,032 INFO L470 AbstractCegarLoop]: Abstraction has 36308 states and 96714 transitions. [2021-08-06 13:18:21,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 96714 transitions. [2021-08-06 13:18:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-08-06 13:18:21,082 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:21,082 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:21,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:21,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-06 13:18:21,284 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:21,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:21,284 INFO L82 PathProgramCache]: Analyzing trace with hash 493808050, now seen corresponding path program 7 times [2021-08-06 13:18:21,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:21,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889507435] [2021-08-06 13:18:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:21,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 581 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-06 13:18:21,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:21,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889507435] [2021-08-06 13:18:21,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889507435] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:21,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279978997] [2021-08-06 13:18:21,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:18:21,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:21,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:21,501 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:21,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-06 13:18:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:23,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:18:23,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 557 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-08-06 13:18:25,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279978997] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:25,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:25,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-08-06 13:18:25,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155839111] [2021-08-06 13:18:25,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:18:25,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:25,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:18:25,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:18:25,681 INFO L87 Difference]: Start difference. First operand 36308 states and 96714 transitions. Second operand has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:26,081 INFO L93 Difference]: Finished difference Result 50953 states and 133764 transitions. [2021-08-06 13:18:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:18:26,082 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 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 322 [2021-08-06 13:18:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:26,181 INFO L225 Difference]: With dead ends: 50953 [2021-08-06 13:18:26,181 INFO L226 Difference]: Without dead ends: 50953 [2021-08-06 13:18:26,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 176.1ms TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:18:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50953 states. [2021-08-06 13:18:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50953 to 34368. [2021-08-06 13:18:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34368 states, 34366 states have (on average 2.6588779607751847) internal successors, (91375), 34367 states have internal predecessors, (91375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34368 states to 34368 states and 91375 transitions. [2021-08-06 13:18:26,828 INFO L78 Accepts]: Start accepts. Automaton has 34368 states and 91375 transitions. Word has length 322 [2021-08-06 13:18:26,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:26,829 INFO L470 AbstractCegarLoop]: Abstraction has 34368 states and 91375 transitions. [2021-08-06 13:18:26,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:26,829 INFO L276 IsEmpty]: Start isEmpty. Operand 34368 states and 91375 transitions. [2021-08-06 13:18:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-08-06 13:18:26,877 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:26,877 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:26,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:27,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:27,078 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:27,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:27,078 INFO L82 PathProgramCache]: Analyzing trace with hash -712966960, now seen corresponding path program 8 times [2021-08-06 13:18:27,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:27,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878072297] [2021-08-06 13:18:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:27,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 581 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-06 13:18:27,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:27,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878072297] [2021-08-06 13:18:27,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878072297] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:27,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540702480] [2021-08-06 13:18:27,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:18:27,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:27,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:27,268 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:27,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-06 13:18:30,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:18:30,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:30,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:18:30,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 557 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-08-06 13:18:31,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540702480] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:31,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:31,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-08-06 13:18:31,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377901243] [2021-08-06 13:18:31,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:18:31,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:18:31,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:18:31,626 INFO L87 Difference]: Start difference. First operand 34368 states and 91375 transitions. Second operand has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:32,045 INFO L93 Difference]: Finished difference Result 49438 states and 130087 transitions. [2021-08-06 13:18:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:18:32,046 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 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 322 [2021-08-06 13:18:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:32,143 INFO L225 Difference]: With dead ends: 49438 [2021-08-06 13:18:32,144 INFO L226 Difference]: Without dead ends: 49438 [2021-08-06 13:18:32,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 169.0ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:18:32,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49438 states. [2021-08-06 13:18:32,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49438 to 34368. [2021-08-06 13:18:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34368 states, 34366 states have (on average 2.6588779607751847) internal successors, (91375), 34367 states have internal predecessors, (91375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34368 states to 34368 states and 91375 transitions. [2021-08-06 13:18:32,739 INFO L78 Accepts]: Start accepts. Automaton has 34368 states and 91375 transitions. Word has length 322 [2021-08-06 13:18:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:32,739 INFO L470 AbstractCegarLoop]: Abstraction has 34368 states and 91375 transitions. [2021-08-06 13:18:32,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 34368 states and 91375 transitions. [2021-08-06 13:18:32,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-08-06 13:18:32,787 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:32,788 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:32,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:32,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:32,989 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:32,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:32,989 INFO L82 PathProgramCache]: Analyzing trace with hash -824494226, now seen corresponding path program 9 times [2021-08-06 13:18:32,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:32,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985474742] [2021-08-06 13:18:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:32,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 581 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-06 13:18:33,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:33,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985474742] [2021-08-06 13:18:33,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985474742] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:33,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619935283] [2021-08-06 13:18:33,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:18:33,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:33,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:33,429 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:33,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-06 13:18:36,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-08-06 13:18:36,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:36,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:18:36,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 557 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-08-06 13:18:37,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619935283] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:37,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:37,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-08-06 13:18:37,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96342160] [2021-08-06 13:18:37,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:18:37,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:37,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:18:37,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:18:37,969 INFO L87 Difference]: Start difference. First operand 34368 states and 91375 transitions. Second operand has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:38,397 INFO L93 Difference]: Finished difference Result 54048 states and 142592 transitions. [2021-08-06 13:18:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 13:18:38,398 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 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 322 [2021-08-06 13:18:38,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:38,513 INFO L225 Difference]: With dead ends: 54048 [2021-08-06 13:18:38,513 INFO L226 Difference]: Without dead ends: 54048 [2021-08-06 13:18:38,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 180.5ms TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-08-06 13:18:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54048 states. [2021-08-06 13:18:39,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54048 to 36308. [2021-08-06 13:18:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 36306 states have (on average 2.6638572136836887) internal successors, (96714), 36307 states have internal predecessors, (96714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 96714 transitions. [2021-08-06 13:18:39,376 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 96714 transitions. Word has length 322 [2021-08-06 13:18:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:39,376 INFO L470 AbstractCegarLoop]: Abstraction has 36308 states and 96714 transitions. [2021-08-06 13:18:39,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 96714 transitions. [2021-08-06 13:18:39,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-08-06 13:18:39,427 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:39,427 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:39,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-08-06 13:18:39,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:39,628 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:39,629 INFO L82 PathProgramCache]: Analyzing trace with hash 249479794, now seen corresponding path program 10 times [2021-08-06 13:18:39,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:39,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252116756] [2021-08-06 13:18:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:39,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:18:39,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:39,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252116756] [2021-08-06 13:18:39,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252116756] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:39,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734734735] [2021-08-06 13:18:39,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:18:39,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:39,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:39,969 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:39,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-06 13:18:42,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:18:42,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:42,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:18:42,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:18:44,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734734735] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:44,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:44,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-08-06 13:18:44,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083588104] [2021-08-06 13:18:44,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:18:44,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:44,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:18:44,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:18:44,388 INFO L87 Difference]: Start difference. First operand 36308 states and 96714 transitions. Second operand has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:44,802 INFO L93 Difference]: Finished difference Result 54193 states and 142578 transitions. [2021-08-06 13:18:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:18:44,803 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 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 322 [2021-08-06 13:18:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:44,914 INFO L225 Difference]: With dead ends: 54193 [2021-08-06 13:18:44,915 INFO L226 Difference]: Without dead ends: 54193 [2021-08-06 13:18:44,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=213, Invalid=599, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:18:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54193 states. [2021-08-06 13:18:45,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54193 to 39408. [2021-08-06 13:18:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39408 states, 39406 states have (on average 2.6698218545399177) internal successors, (105207), 39407 states have internal predecessors, (105207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:45,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39408 states to 39408 states and 105207 transitions. [2021-08-06 13:18:45,778 INFO L78 Accepts]: Start accepts. Automaton has 39408 states and 105207 transitions. Word has length 322 [2021-08-06 13:18:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:45,778 INFO L470 AbstractCegarLoop]: Abstraction has 39408 states and 105207 transitions. [2021-08-06 13:18:45,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 39408 states and 105207 transitions. [2021-08-06 13:18:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-08-06 13:18:45,837 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:45,837 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:45,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:46,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-08-06 13:18:46,038 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:46,038 INFO L82 PathProgramCache]: Analyzing trace with hash 137952528, now seen corresponding path program 11 times [2021-08-06 13:18:46,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:46,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273186172] [2021-08-06 13:18:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:46,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:18:46,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:46,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273186172] [2021-08-06 13:18:46,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273186172] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:46,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656369015] [2021-08-06 13:18:46,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:18:46,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:46,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:46,211 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:46,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-06 13:18:49,490 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-08-06 13:18:49,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:49,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:18:49,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:18:51,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656369015] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:51,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:51,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-08-06 13:18:51,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198465079] [2021-08-06 13:18:51,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:18:51,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:51,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:18:51,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:18:51,042 INFO L87 Difference]: Start difference. First operand 39408 states and 105207 transitions. Second operand has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:51,554 INFO L93 Difference]: Finished difference Result 65138 states and 172813 transitions. [2021-08-06 13:18:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:18:51,554 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 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 322 [2021-08-06 13:18:51,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:51,682 INFO L225 Difference]: With dead ends: 65138 [2021-08-06 13:18:51,683 INFO L226 Difference]: Without dead ends: 65138 [2021-08-06 13:18:51,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 163.2ms TimeCoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:18:51,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65138 states. [2021-08-06 13:18:52,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65138 to 41348. [2021-08-06 13:18:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41348 states, 41346 states have (on average 2.6736806462535676) internal successors, (110546), 41347 states have internal predecessors, (110546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41348 states to 41348 states and 110546 transitions. [2021-08-06 13:18:52,582 INFO L78 Accepts]: Start accepts. Automaton has 41348 states and 110546 transitions. Word has length 322 [2021-08-06 13:18:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:52,582 INFO L470 AbstractCegarLoop]: Abstraction has 41348 states and 110546 transitions. [2021-08-06 13:18:52,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:52,582 INFO L276 IsEmpty]: Start isEmpty. Operand 41348 states and 110546 transitions. [2021-08-06 13:18:52,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-08-06 13:18:52,639 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:52,639 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:52,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:52,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:52,840 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:52,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:52,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2017778001, now seen corresponding path program 8 times [2021-08-06 13:18:52,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:52,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380083259] [2021-08-06 13:18:52,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:52,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:53,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:53,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380083259] [2021-08-06 13:18:53,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380083259] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:53,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317294263] [2021-08-06 13:18:53,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:18:53,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:53,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:53,111 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:53,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-08-06 13:18:56,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:18:56,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:56,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:18:56,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:57,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317294263] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:57,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:57,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-08-06 13:18:57,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007131896] [2021-08-06 13:18:57,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-06 13:18:57,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-06 13:18:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-08-06 13:18:57,996 INFO L87 Difference]: Start difference. First operand 41348 states and 110546 transitions. Second operand has 21 states, 21 states have (on average 17.761904761904763) internal successors, (373), 21 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:58,507 INFO L93 Difference]: Finished difference Result 50527 states and 134028 transitions. [2021-08-06 13:18:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-06 13:18:58,508 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 17.761904761904763) internal successors, (373), 21 states have internal predecessors, (373), 0 states have call successors, (0), 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 326 [2021-08-06 13:18:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:58,613 INFO L225 Difference]: With dead ends: 50527 [2021-08-06 13:18:58,613 INFO L226 Difference]: Without dead ends: 50527 [2021-08-06 13:18:58,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 308.8ms TimeCoverageRelationStatistics Valid=496, Invalid=986, Unknown=0, NotChecked=0, Total=1482 [2021-08-06 13:18:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50527 states. [2021-08-06 13:18:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50527 to 43150. [2021-08-06 13:18:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43150 states, 43148 states have (on average 2.668860665616019) internal successors, (115156), 43149 states have internal predecessors, (115156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43150 states to 43150 states and 115156 transitions. [2021-08-06 13:18:59,656 INFO L78 Accepts]: Start accepts. Automaton has 43150 states and 115156 transitions. Word has length 326 [2021-08-06 13:18:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:59,656 INFO L470 AbstractCegarLoop]: Abstraction has 43150 states and 115156 transitions. [2021-08-06 13:18:59,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.761904761904763) internal successors, (373), 21 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 43150 states and 115156 transitions. [2021-08-06 13:18:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-08-06 13:18:59,716 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:59,716 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:59,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-08-06 13:18:59,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:59,917 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:59,917 INFO L82 PathProgramCache]: Analyzing trace with hash 546600481, now seen corresponding path program 14 times [2021-08-06 13:18:59,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:59,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412504454] [2021-08-06 13:18:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:59,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 808 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-06 13:19:00,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:00,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412504454] [2021-08-06 13:19:00,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412504454] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:00,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055872670] [2021-08-06 13:19:00,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:19:00,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:00,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:00,286 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:00,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-08-06 13:19:03,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:19:03,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:03,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:19:03,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:04,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055872670] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:04,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:04,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 18 [2021-08-06 13:19:04,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41840567] [2021-08-06 13:19:04,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:19:04,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:19:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:19:04,947 INFO L87 Difference]: Start difference. First operand 43150 states and 115156 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:05,410 INFO L93 Difference]: Finished difference Result 53420 states and 141238 transitions. [2021-08-06 13:19:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:19:05,411 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 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 327 [2021-08-06 13:19:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:05,522 INFO L225 Difference]: With dead ends: 53420 [2021-08-06 13:19:05,523 INFO L226 Difference]: Without dead ends: 53420 [2021-08-06 13:19:05,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 237.7ms TimeCoverageRelationStatistics Valid=338, Invalid=784, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:19:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53420 states. [2021-08-06 13:19:06,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53420 to 43830. [2021-08-06 13:19:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43830 states, 43828 states have (on average 2.6705758875604637) internal successors, (117046), 43829 states have internal predecessors, (117046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43830 states to 43830 states and 117046 transitions. [2021-08-06 13:19:06,567 INFO L78 Accepts]: Start accepts. Automaton has 43830 states and 117046 transitions. Word has length 327 [2021-08-06 13:19:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:06,567 INFO L470 AbstractCegarLoop]: Abstraction has 43830 states and 117046 transitions. [2021-08-06 13:19:06,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 43830 states and 117046 transitions. [2021-08-06 13:19:06,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-08-06 13:19:06,624 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:06,624 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:06,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-08-06 13:19:06,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-08-06 13:19:06,825 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:06,825 INFO L82 PathProgramCache]: Analyzing trace with hash 728322751, now seen corresponding path program 15 times [2021-08-06 13:19:06,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:06,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833835137] [2021-08-06 13:19:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:06,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:07,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:07,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833835137] [2021-08-06 13:19:07,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833835137] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:07,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651047170] [2021-08-06 13:19:07,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:19:07,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:07,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:07,185 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:07,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-08-06 13:19:10,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-08-06 13:19:10,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:10,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:19:10,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:12,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651047170] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:12,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:12,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:19:12,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600585010] [2021-08-06 13:19:12,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:19:12,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:12,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:19:12,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:19:12,122 INFO L87 Difference]: Start difference. First operand 43830 states and 117046 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:12,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:12,603 INFO L93 Difference]: Finished difference Result 57625 states and 151795 transitions. [2021-08-06 13:19:12,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:19:12,603 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 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 327 [2021-08-06 13:19:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:12,718 INFO L225 Difference]: With dead ends: 57625 [2021-08-06 13:19:12,718 INFO L226 Difference]: Without dead ends: 57625 [2021-08-06 13:19:12,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 223.1ms TimeCoverageRelationStatistics Valid=336, Invalid=786, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:19:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57625 states. [2021-08-06 13:19:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57625 to 43150. [2021-08-06 13:19:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43150 states, 43148 states have (on average 2.668860665616019) internal successors, (115156), 43149 states have internal predecessors, (115156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43150 states to 43150 states and 115156 transitions. [2021-08-06 13:19:13,590 INFO L78 Accepts]: Start accepts. Automaton has 43150 states and 115156 transitions. Word has length 327 [2021-08-06 13:19:13,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:13,591 INFO L470 AbstractCegarLoop]: Abstraction has 43150 states and 115156 transitions. [2021-08-06 13:19:13,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 43150 states and 115156 transitions. [2021-08-06 13:19:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-08-06 13:19:13,652 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:13,652 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:13,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:13,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-08-06 13:19:13,852 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:13,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1336981213, now seen corresponding path program 16 times [2021-08-06 13:19:13,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:13,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786376690] [2021-08-06 13:19:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:13,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:14,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:14,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786376690] [2021-08-06 13:19:14,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786376690] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:14,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140457501] [2021-08-06 13:19:14,371 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:19:14,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:14,372 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:14,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-08-06 13:19:17,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:19:17,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:17,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:19:17,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:19,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140457501] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:19,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:19,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:19:19,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674793394] [2021-08-06 13:19:19,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:19:19,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:19:19,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:19:19,504 INFO L87 Difference]: Start difference. First operand 43150 states and 115156 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:19,991 INFO L93 Difference]: Finished difference Result 58745 states and 155304 transitions. [2021-08-06 13:19:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-06 13:19:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 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 327 [2021-08-06 13:19:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:20,113 INFO L225 Difference]: With dead ends: 58745 [2021-08-06 13:19:20,113 INFO L226 Difference]: Without dead ends: 58745 [2021-08-06 13:19:20,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 233.2ms TimeCoverageRelationStatistics Valid=345, Invalid=845, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:19:20,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58745 states. [2021-08-06 13:19:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58745 to 45090. [2021-08-06 13:19:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45090 states, 45088 states have (on average 2.672440560681334) internal successors, (120495), 45089 states have internal predecessors, (120495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45090 states to 45090 states and 120495 transitions. [2021-08-06 13:19:21,019 INFO L78 Accepts]: Start accepts. Automaton has 45090 states and 120495 transitions. Word has length 327 [2021-08-06 13:19:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:21,019 INFO L470 AbstractCegarLoop]: Abstraction has 45090 states and 120495 transitions. [2021-08-06 13:19:21,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 45090 states and 120495 transitions. [2021-08-06 13:19:21,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-08-06 13:19:21,079 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:21,079 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:21,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:21,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-06 13:19:21,280 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1494973829, now seen corresponding path program 17 times [2021-08-06 13:19:21,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:21,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116069824] [2021-08-06 13:19:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:21,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:21,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:21,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116069824] [2021-08-06 13:19:21,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116069824] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:21,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334716546] [2021-08-06 13:19:21,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:19:21,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:21,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:21,799 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:21,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-08-06 13:19:25,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-08-06 13:19:25,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:25,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:19:25,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:27,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334716546] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:27,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:27,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:19:27,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520665421] [2021-08-06 13:19:27,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:19:27,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:19:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:19:27,053 INFO L87 Difference]: Start difference. First operand 45090 states and 120495 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:27,588 INFO L93 Difference]: Finished difference Result 64210 states and 169402 transitions. [2021-08-06 13:19:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-06 13:19:27,589 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 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 327 [2021-08-06 13:19:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:27,711 INFO L225 Difference]: With dead ends: 64210 [2021-08-06 13:19:27,711 INFO L226 Difference]: Without dead ends: 64210 [2021-08-06 13:19:27,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 265.4ms TimeCoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:19:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64210 states. [2021-08-06 13:19:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64210 to 48290. [2021-08-06 13:19:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48290 states, 48288 states have (on average 2.6773318422796555) internal successors, (129283), 48289 states have internal predecessors, (129283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48290 states to 48290 states and 129283 transitions. [2021-08-06 13:19:28,763 INFO L78 Accepts]: Start accepts. Automaton has 48290 states and 129283 transitions. Word has length 327 [2021-08-06 13:19:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:28,763 INFO L470 AbstractCegarLoop]: Abstraction has 48290 states and 129283 transitions. [2021-08-06 13:19:28,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 48290 states and 129283 transitions. [2021-08-06 13:19:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-08-06 13:19:28,830 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:28,831 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:28,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:29,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-08-06 13:19:29,031 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:29,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1593218457, now seen corresponding path program 18 times [2021-08-06 13:19:29,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:29,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242593768] [2021-08-06 13:19:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:29,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:29,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:29,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242593768] [2021-08-06 13:19:29,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242593768] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:29,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077032847] [2021-08-06 13:19:29,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:19:29,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:29,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:29,241 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:29,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-08-06 13:19:33,429 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-08-06 13:19:33,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:33,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:19:33,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:34,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077032847] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:34,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:34,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:19:34,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599540798] [2021-08-06 13:19:34,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:19:34,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:19:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:19:34,989 INFO L87 Difference]: Start difference. First operand 48290 states and 129283 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:35,578 INFO L93 Difference]: Finished difference Result 71055 states and 187712 transitions. [2021-08-06 13:19:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-06 13:19:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 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 327 [2021-08-06 13:19:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:35,721 INFO L225 Difference]: With dead ends: 71055 [2021-08-06 13:19:35,721 INFO L226 Difference]: Without dead ends: 71055 [2021-08-06 13:19:35,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 243.1ms TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2021-08-06 13:19:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71055 states. [2021-08-06 13:19:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71055 to 49550. [2021-08-06 13:19:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49550 states, 49548 states have (on average 2.678856866069266) internal successors, (132732), 49549 states have internal predecessors, (132732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49550 states to 49550 states and 132732 transitions. [2021-08-06 13:19:36,803 INFO L78 Accepts]: Start accepts. Automaton has 49550 states and 132732 transitions. Word has length 327 [2021-08-06 13:19:36,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:36,803 INFO L470 AbstractCegarLoop]: Abstraction has 49550 states and 132732 transitions. [2021-08-06 13:19:36,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 49550 states and 132732 transitions. [2021-08-06 13:19:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-08-06 13:19:36,870 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:36,870 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:36,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:37,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-08-06 13:19:37,076 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:37,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1481691191, now seen corresponding path program 19 times [2021-08-06 13:19:37,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:37,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538696805] [2021-08-06 13:19:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:37,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:37,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:37,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538696805] [2021-08-06 13:19:37,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538696805] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:37,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461453456] [2021-08-06 13:19:37,282 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:19:37,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:37,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:37,283 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:37,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-08-06 13:19:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:41,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:19:41,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-06 13:19:42,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461453456] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:42,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:42,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:19:42,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279097895] [2021-08-06 13:19:42,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:19:42,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:42,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:19:42,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:19:42,953 INFO L87 Difference]: Start difference. First operand 49550 states and 132732 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:43,485 INFO L93 Difference]: Finished difference Result 66465 states and 176301 transitions. [2021-08-06 13:19:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-06 13:19:43,485 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 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 327 [2021-08-06 13:19:43,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:43,617 INFO L225 Difference]: With dead ends: 66465 [2021-08-06 13:19:43,617 INFO L226 Difference]: Without dead ends: 66465 [2021-08-06 13:19:43,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 260.2ms TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2021-08-06 13:19:43,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66465 states. [2021-08-06 13:19:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66465 to 48190. [2021-08-06 13:19:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48190 states, 48188 states have (on average 2.6760189258736613) internal successors, (128952), 48189 states have internal predecessors, (128952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48190 states to 48190 states and 128952 transitions. [2021-08-06 13:19:44,797 INFO L78 Accepts]: Start accepts. Automaton has 48190 states and 128952 transitions. Word has length 327 [2021-08-06 13:19:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:44,797 INFO L470 AbstractCegarLoop]: Abstraction has 48190 states and 128952 transitions. [2021-08-06 13:19:44,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 48190 states and 128952 transitions. [2021-08-06 13:19:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-08-06 13:19:44,865 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:44,865 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:44,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:45,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-08-06 13:19:45,066 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:45,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:45,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2012739420, now seen corresponding path program 12 times [2021-08-06 13:19:45,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:45,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105621530] [2021-08-06 13:19:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:45,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 18 proven. 602 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-08-06 13:19:45,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:45,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105621530] [2021-08-06 13:19:45,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105621530] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:45,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645975625] [2021-08-06 13:19:45,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:19:45,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:45,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:45,265 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:45,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-08-06 13:19:49,663 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-06 13:19:49,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:49,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:19:49,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 18 proven. 578 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-08-06 13:19:51,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645975625] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:51,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:51,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-08-06 13:19:51,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382424268] [2021-08-06 13:19:51,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:19:51,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:51,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:19:51,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:19:51,304 INFO L87 Difference]: Start difference. First operand 48190 states and 128952 transitions. Second operand has 14 states, 14 states have (on average 21.785714285714285) internal successors, (305), 14 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:51,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:51,778 INFO L93 Difference]: Finished difference Result 84430 states and 223303 transitions. [2021-08-06 13:19:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:19:51,778 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 21.785714285714285) internal successors, (305), 14 states have internal predecessors, (305), 0 states have call successors, (0), 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 351 [2021-08-06 13:19:51,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:51,941 INFO L225 Difference]: With dead ends: 84430 [2021-08-06 13:19:51,941 INFO L226 Difference]: Without dead ends: 84430 [2021-08-06 13:19:51,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 158.8ms TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2021-08-06 13:19:52,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84430 states. [2021-08-06 13:19:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84430 to 57010. [2021-08-06 13:19:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57010 states, 57008 states have (on average 2.6867632612966603) internal successors, (153167), 57009 states have internal predecessors, (153167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57010 states to 57010 states and 153167 transitions. [2021-08-06 13:19:53,261 INFO L78 Accepts]: Start accepts. Automaton has 57010 states and 153167 transitions. Word has length 351 [2021-08-06 13:19:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:53,262 INFO L470 AbstractCegarLoop]: Abstraction has 57010 states and 153167 transitions. [2021-08-06 13:19:53,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.785714285714285) internal successors, (305), 14 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:53,262 INFO L276 IsEmpty]: Start isEmpty. Operand 57010 states and 153167 transitions. [2021-08-06 13:19:53,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-08-06 13:19:53,351 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:53,351 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:53,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:53,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-08-06 13:19:53,552 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:53,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1598067955, now seen corresponding path program 13 times [2021-08-06 13:19:53,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:53,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268322962] [2021-08-06 13:19:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:53,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-06 13:19:53,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:53,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268322962] [2021-08-06 13:19:53,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268322962] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:53,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240389690] [2021-08-06 13:19:53,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:19:53,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:53,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:53,762 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:53,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-08-06 13:19:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:58,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:19:58,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:59,989 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 776 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-08-06 13:19:59,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240389690] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:59,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:59,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-08-06 13:19:59,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613832162] [2021-08-06 13:19:59,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:19:59,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:59,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:19:59,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:19:59,991 INFO L87 Difference]: Start difference. First operand 57010 states and 153167 transitions. Second operand has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:00,521 INFO L93 Difference]: Finished difference Result 75215 states and 199169 transitions. [2021-08-06 13:20:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-06 13:20:00,521 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 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 356 [2021-08-06 13:20:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:00,668 INFO L225 Difference]: With dead ends: 75215 [2021-08-06 13:20:00,669 INFO L226 Difference]: Without dead ends: 75215 [2021-08-06 13:20:00,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 201.8ms TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 13:20:00,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75215 states. [2021-08-06 13:20:01,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75215 to 55070. [2021-08-06 13:20:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55070 states, 55068 states have (on average 2.6844628459359337) internal successors, (147828), 55069 states have internal predecessors, (147828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55070 states to 55070 states and 147828 transitions. [2021-08-06 13:20:01,786 INFO L78 Accepts]: Start accepts. Automaton has 55070 states and 147828 transitions. Word has length 356 [2021-08-06 13:20:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:01,787 INFO L470 AbstractCegarLoop]: Abstraction has 55070 states and 147828 transitions. [2021-08-06 13:20:01,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 55070 states and 147828 transitions. [2021-08-06 13:20:01,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-08-06 13:20:01,883 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:01,883 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:01,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:02,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-08-06 13:20:02,084 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1233887087, now seen corresponding path program 14 times [2021-08-06 13:20:02,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:02,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544355927] [2021-08-06 13:20:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:02,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-06 13:20:02,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:02,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544355927] [2021-08-06 13:20:02,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544355927] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:02,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015783520] [2021-08-06 13:20:02,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:20:02,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:02,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:02,705 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:02,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-08-06 13:20:07,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:20:07,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:07,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:20:07,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 776 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-08-06 13:20:08,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015783520] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:08,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:08,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-08-06 13:20:08,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866803839] [2021-08-06 13:20:08,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:20:08,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:08,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:20:08,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:20:08,632 INFO L87 Difference]: Start difference. First operand 55070 states and 147828 transitions. Second operand has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:09,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:09,194 INFO L93 Difference]: Finished difference Result 83920 states and 222943 transitions. [2021-08-06 13:20:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-06 13:20:09,194 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 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 356 [2021-08-06 13:20:09,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:09,362 INFO L225 Difference]: With dead ends: 83920 [2021-08-06 13:20:09,362 INFO L226 Difference]: Without dead ends: 83920 [2021-08-06 13:20:09,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 265.3ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 13:20:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83920 states. [2021-08-06 13:20:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83920 to 56330. [2021-08-06 13:20:10,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56330 states, 56328 states have (on average 2.6856447947734696) internal successors, (151277), 56329 states have internal predecessors, (151277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56330 states to 56330 states and 151277 transitions. [2021-08-06 13:20:10,595 INFO L78 Accepts]: Start accepts. Automaton has 56330 states and 151277 transitions. Word has length 356 [2021-08-06 13:20:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:10,596 INFO L470 AbstractCegarLoop]: Abstraction has 56330 states and 151277 transitions. [2021-08-06 13:20:10,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:10,596 INFO L276 IsEmpty]: Start isEmpty. Operand 56330 states and 151277 transitions. [2021-08-06 13:20:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-08-06 13:20:10,684 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:10,685 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:10,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:10,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:10,886 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:10,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:10,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1854305199, now seen corresponding path program 15 times [2021-08-06 13:20:10,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:10,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811054424] [2021-08-06 13:20:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:10,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-06 13:20:11,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:11,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811054424] [2021-08-06 13:20:11,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811054424] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:11,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164942189] [2021-08-06 13:20:11,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:20:11,490 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:11,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:11,509 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:11,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-08-06 13:20:15,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-08-06 13:20:15,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:15,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:20:15,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 776 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-08-06 13:20:17,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164942189] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:17,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:17,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-08-06 13:20:17,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004998478] [2021-08-06 13:20:17,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:20:17,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:17,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:20:17,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:20:17,659 INFO L87 Difference]: Start difference. First operand 56330 states and 151277 transitions. Second operand has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:18,258 INFO L93 Difference]: Finished difference Result 79860 states and 212857 transitions. [2021-08-06 13:20:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:20:18,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 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 356 [2021-08-06 13:20:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:18,412 INFO L225 Difference]: With dead ends: 79860 [2021-08-06 13:20:18,412 INFO L226 Difference]: Without dead ends: 79860 [2021-08-06 13:20:18,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 227.6ms TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:20:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79860 states. [2021-08-06 13:20:19,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79860 to 57010. [2021-08-06 13:20:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57010 states, 57008 states have (on average 2.6867632612966603) internal successors, (153167), 57009 states have internal predecessors, (153167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57010 states to 57010 states and 153167 transitions. [2021-08-06 13:20:19,583 INFO L78 Accepts]: Start accepts. Automaton has 57010 states and 153167 transitions. Word has length 356 [2021-08-06 13:20:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:19,583 INFO L470 AbstractCegarLoop]: Abstraction has 57010 states and 153167 transitions. [2021-08-06 13:20:19,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 57010 states and 153167 transitions. [2021-08-06 13:20:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-08-06 13:20:19,672 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:19,672 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:19,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:19,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:19,881 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:19,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1742777933, now seen corresponding path program 16 times [2021-08-06 13:20:19,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:19,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984941694] [2021-08-06 13:20:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:19,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-08-06 13:20:20,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:20,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984941694] [2021-08-06 13:20:20,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984941694] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:20,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993492930] [2021-08-06 13:20:20,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:20:20,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:20,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:20,481 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:20,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-08-06 13:20:25,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:20:25,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:25,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:20:25,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 776 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-08-06 13:20:26,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993492930] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:26,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:26,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-08-06 13:20:26,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85429999] [2021-08-06 13:20:26,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:20:26,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:26,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:20:26,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:20:26,750 INFO L87 Difference]: Start difference. First operand 57010 states and 153167 transitions. Second operand has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:27,329 INFO L93 Difference]: Finished difference Result 80745 states and 215054 transitions. [2021-08-06 13:20:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-06 13:20:27,330 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 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 356 [2021-08-06 13:20:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:27,599 INFO L225 Difference]: With dead ends: 80745 [2021-08-06 13:20:27,599 INFO L226 Difference]: Without dead ends: 80745 [2021-08-06 13:20:27,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 612.4ms TimeCoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:20:27,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80745 states. [2021-08-06 13:20:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80745 to 57690. [2021-08-06 13:20:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57690 states, 57688 states have (on average 2.68785535986687) internal successors, (155057), 57689 states have internal predecessors, (155057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:28,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57690 states to 57690 states and 155057 transitions. [2021-08-06 13:20:28,770 INFO L78 Accepts]: Start accepts. Automaton has 57690 states and 155057 transitions. Word has length 356 [2021-08-06 13:20:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:28,771 INFO L470 AbstractCegarLoop]: Abstraction has 57690 states and 155057 transitions. [2021-08-06 13:20:28,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 57690 states and 155057 transitions. [2021-08-06 13:20:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-08-06 13:20:28,866 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:28,866 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:28,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:29,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-08-06 13:20:29,067 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:29,067 INFO L82 PathProgramCache]: Analyzing trace with hash 961166771, now seen corresponding path program 17 times [2021-08-06 13:20:29,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:29,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653534913] [2021-08-06 13:20:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:29,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:20:29,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:29,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653534913] [2021-08-06 13:20:29,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653534913] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:29,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213555264] [2021-08-06 13:20:29,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:20:29,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:29,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:29,253 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:29,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-08-06 13:20:34,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-08-06 13:20:34,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:34,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:20:34,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:20:35,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213555264] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:35,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:35,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-08-06 13:20:35,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013461376] [2021-08-06 13:20:35,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:20:35,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:35,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:20:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:20:35,989 INFO L87 Difference]: Start difference. First operand 57690 states and 155057 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:36,519 INFO L93 Difference]: Finished difference Result 80040 states and 212249 transitions. [2021-08-06 13:20:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-06 13:20:36,520 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 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 356 [2021-08-06 13:20:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:36,675 INFO L225 Difference]: With dead ends: 80040 [2021-08-06 13:20:36,675 INFO L226 Difference]: Without dead ends: 80040 [2021-08-06 13:20:36,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 204.9ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 13:20:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80040 states. [2021-08-06 13:20:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80040 to 56230. [2021-08-06 13:20:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56230 states, 56228 states have (on average 2.6851746460838015) internal successors, (150982), 56229 states have internal predecessors, (150982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56230 states to 56230 states and 150982 transitions. [2021-08-06 13:20:38,126 INFO L78 Accepts]: Start accepts. Automaton has 56230 states and 150982 transitions. Word has length 356 [2021-08-06 13:20:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:38,126 INFO L470 AbstractCegarLoop]: Abstraction has 56230 states and 150982 transitions. [2021-08-06 13:20:38,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 56230 states and 150982 transitions. [2021-08-06 13:20:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-08-06 13:20:38,213 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:38,213 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:38,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-08-06 13:20:38,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-08-06 13:20:38,414 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:38,415 INFO L82 PathProgramCache]: Analyzing trace with hash -245608239, now seen corresponding path program 18 times [2021-08-06 13:20:38,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:38,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279936228] [2021-08-06 13:20:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:38,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:20:38,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:38,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279936228] [2021-08-06 13:20:38,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279936228] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:38,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124783422] [2021-08-06 13:20:38,598 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:20:38,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:38,599 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:38,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-08-06 13:20:43,645 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-08-06 13:20:43,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:43,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:20:43,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:20:45,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124783422] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:45,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:45,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-08-06 13:20:45,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520196696] [2021-08-06 13:20:45,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:20:45,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:45,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:20:45,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:20:45,350 INFO L87 Difference]: Start difference. First operand 56230 states and 150982 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:45,935 INFO L93 Difference]: Finished difference Result 93860 states and 250583 transitions. [2021-08-06 13:20:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-06 13:20:45,936 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 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 356 [2021-08-06 13:20:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:46,123 INFO L225 Difference]: With dead ends: 93860 [2021-08-06 13:20:46,123 INFO L226 Difference]: Without dead ends: 93860 [2021-08-06 13:20:46,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 235.2ms TimeCoverageRelationStatistics Valid=280, Invalid=776, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 13:20:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93860 states. [2021-08-06 13:20:47,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93860 to 60790. [2021-08-06 13:20:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60790 states, 60788 states have (on average 2.6904981246298614) internal successors, (163550), 60789 states have internal predecessors, (163550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60790 states to 60790 states and 163550 transitions. [2021-08-06 13:20:47,649 INFO L78 Accepts]: Start accepts. Automaton has 60790 states and 163550 transitions. Word has length 356 [2021-08-06 13:20:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:47,650 INFO L470 AbstractCegarLoop]: Abstraction has 60790 states and 163550 transitions. [2021-08-06 13:20:47,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 60790 states and 163550 transitions. [2021-08-06 13:20:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-08-06 13:20:47,746 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:47,746 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:47,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-08-06 13:20:47,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-08-06 13:20:47,947 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:47,947 INFO L82 PathProgramCache]: Analyzing trace with hash -357135505, now seen corresponding path program 19 times [2021-08-06 13:20:47,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:47,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263017658] [2021-08-06 13:20:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:47,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:20:48,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:48,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263017658] [2021-08-06 13:20:48,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263017658] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:48,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525413546] [2021-08-06 13:20:48,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:20:48,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:48,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:48,443 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:48,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-08-06 13:20:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:53,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:20:53,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:20:54,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525413546] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:54,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:54,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-08-06 13:20:54,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230059572] [2021-08-06 13:20:54,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:20:54,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:20:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:20:54,979 INFO L87 Difference]: Start difference. First operand 60790 states and 163550 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:55,694 INFO L93 Difference]: Finished difference Result 92305 states and 246335 transitions. [2021-08-06 13:20:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:20:55,695 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 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 356 [2021-08-06 13:20:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:55,918 INFO L225 Difference]: With dead ends: 92305 [2021-08-06 13:20:55,918 INFO L226 Difference]: Without dead ends: 92305 [2021-08-06 13:20:55,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 236.6ms TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:20:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92305 states. [2021-08-06 13:20:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92305 to 60110. [2021-08-06 13:20:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60110 states, 60108 states have (on average 2.6894922472882143) internal successors, (161660), 60109 states have internal predecessors, (161660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60110 states to 60110 states and 161660 transitions. [2021-08-06 13:20:57,434 INFO L78 Accepts]: Start accepts. Automaton has 60110 states and 161660 transitions. Word has length 356 [2021-08-06 13:20:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:57,435 INFO L470 AbstractCegarLoop]: Abstraction has 60110 states and 161660 transitions. [2021-08-06 13:20:57,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:57,435 INFO L276 IsEmpty]: Start isEmpty. Operand 60110 states and 161660 transitions. [2021-08-06 13:20:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-08-06 13:20:57,534 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:57,534 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:57,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:57,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:57,734 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash 716838515, now seen corresponding path program 20 times [2021-08-06 13:20:57,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:57,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384997618] [2021-08-06 13:20:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:57,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:20:58,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:58,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384997618] [2021-08-06 13:20:58,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384997618] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:58,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218642471] [2021-08-06 13:20:58,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:20:58,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:58,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:58,293 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:58,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-08-06 13:21:03,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:21:03,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:21:03,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:21:03,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:21:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-08-06 13:21:05,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218642471] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:05,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:21:05,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-08-06 13:21:05,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075261975] [2021-08-06 13:21:05,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:21:05,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:21:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:21:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:21:05,041 INFO L87 Difference]: Start difference. First operand 60110 states and 161660 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:21:05,613 INFO L93 Difference]: Finished difference Result 81200 states and 216181 transitions. [2021-08-06 13:21:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:21:05,614 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 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 356 [2021-08-06 13:21:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:21:05,773 INFO L225 Difference]: With dead ends: 81200 [2021-08-06 13:21:05,773 INFO L226 Difference]: Without dead ends: 81200 [2021-08-06 13:21:05,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 230.8ms TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:21:05,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81200 states. [2021-08-06 13:21:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81200 to 62530. [2021-08-06 13:21:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62530 states, 62528 states have (on average 2.691002430910952) internal successors, (168263), 62529 states have internal predecessors, (168263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:07,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62530 states to 62530 states and 168263 transitions. [2021-08-06 13:21:07,037 INFO L78 Accepts]: Start accepts. Automaton has 62530 states and 168263 transitions. Word has length 356 [2021-08-06 13:21:07,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:21:07,038 INFO L470 AbstractCegarLoop]: Abstraction has 62530 states and 168263 transitions. [2021-08-06 13:21:07,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:07,038 INFO L276 IsEmpty]: Start isEmpty. Operand 62530 states and 168263 transitions. [2021-08-06 13:21:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-08-06 13:21:07,142 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:21:07,142 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:21:07,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-08-06 13:21:07,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-08-06 13:21:07,342 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:21:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:21:07,343 INFO L82 PathProgramCache]: Analyzing trace with hash 605311249, now seen corresponding path program 21 times [2021-08-06 13:21:07,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:21:07,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73325576] [2021-08-06 13:21:07,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:21:07,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:21:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat