/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 16:09:50,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:09:50,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:09:50,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:09:50,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:09:50,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:09:50,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:09:50,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:09:50,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:09:50,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:09:50,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:09:50,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:09:50,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:09:50,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:09:50,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:09:50,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:09:50,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:09:50,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:09:50,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:09:50,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:09:50,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:09:50,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:09:50,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:09:50,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:09:50,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 16:09:50,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:09:50,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:09:50,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:09:50,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:09:50,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:09:50,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:09:50,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:09:50,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:09:50,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:09:50,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:09:50,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:09:50,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 16:09:50,194 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:09:50,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:09:50,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:09:50,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:09:50,196 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:09:50,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:09:50,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:09:50,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:09:50,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:09:50,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:09:50,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:09:50,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:09:50,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:09:50,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:09:50,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:09:50,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:09:50,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:09:50,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:09:50,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:09:50,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:09:50,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:09:50,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:09:50,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:09:50,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:09:50,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:09:50,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:09:50,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:09:50,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 16:09:50,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 16:09:50,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:09:50,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:09:50,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:09:50,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:09:50,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:09:50,507 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:09:50,508 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2020-10-11 16:09:50,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc725f2d7/aa4cf605f69a4b5d897eb8c17cbe4481/FLAGf0691df26 [2020-10-11 16:09:50,931 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:09:50,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2020-10-11 16:09:50,932 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 16:09:50,933 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 16:09:50,933 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 16:09:50,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc725f2d7/aa4cf605f69a4b5d897eb8c17cbe4481/FLAGf0691df26 [2020-10-11 16:09:51,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc725f2d7/aa4cf605f69a4b5d897eb8c17cbe4481 [2020-10-11 16:09:51,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:09:51,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:09:51,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:09:51,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:09:51,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:09:51,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219c51ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51, skipping insertion in model container [2020-10-11 16:09:51,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:09:51,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:09:51,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:09:51,535 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:09:51,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:09:51,645 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:09:51,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51 WrapperNode [2020-10-11 16:09:51,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:09:51,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:09:51,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:09:51,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:09:51,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:09:51,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:09:51,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:09:51,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:09:51,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... [2020-10-11 16:09:51,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:09:51,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:09:51,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:09:51,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:09:51,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:09:51,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:09:51,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:09:51,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:09:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:09:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2020-10-11 16:09:51,765 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2020-10-11 16:09:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2020-10-11 16:09:51,768 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2020-10-11 16:09:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:09:51,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:09:51,771 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 16:09:52,161 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:09:52,162 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-11 16:09:52,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:09:52 BoogieIcfgContainer [2020-10-11 16:09:52,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:09:52,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:09:52,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:09:52,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:09:52,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:09:51" (1/3) ... [2020-10-11 16:09:52,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275dee99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:09:52, skipping insertion in model container [2020-10-11 16:09:52,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:09:51" (2/3) ... [2020-10-11 16:09:52,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275dee99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:09:52, skipping insertion in model container [2020-10-11 16:09:52,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:09:52" (3/3) ... [2020-10-11 16:09:52,172 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2020-10-11 16:09:52,184 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 16:09:52,184 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:09:52,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 16:09:52,192 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:09:52,222 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,222 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,223 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,223 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,223 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,224 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,224 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,224 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,224 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,225 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,225 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,226 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,226 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,230 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,231 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,231 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,231 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,232 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,232 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,232 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,232 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,233 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,240 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,242 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,242 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,242 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,242 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,251 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,251 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,252 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,252 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,252 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:09:52,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 16:09:52,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:09:52,310 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 16:09:52,310 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:09:52,310 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:09:52,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:09:52,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:09:52,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:09:52,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:09:52,326 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 16:09:52,328 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 56 transitions, 134 flow [2020-10-11 16:09:52,330 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 56 transitions, 134 flow [2020-10-11 16:09:52,332 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions, 134 flow [2020-10-11 16:09:52,370 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2020-10-11 16:09:52,371 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:09:52,376 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 56 events. 5/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2020-10-11 16:09:52,378 INFO L117 LiptonReduction]: Number of co-enabled transitions 528 [2020-10-11 16:09:53,131 INFO L132 LiptonReduction]: Checked pairs total: 866 [2020-10-11 16:09:53,131 INFO L134 LiptonReduction]: Total number of compositions: 34 [2020-10-11 16:09:53,138 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 24 transitions, 70 flow [2020-10-11 16:09:53,152 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 70 states. [2020-10-11 16:09:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-11 16:09:53,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 16:09:53,163 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:53,164 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:53,165 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:53,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1474833226, now seen corresponding path program 1 times [2020-10-11 16:09:53,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:53,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834312998] [2020-10-11 16:09:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:09:53,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834312998] [2020-10-11 16:09:53,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:09:53,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 16:09:53,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873209202] [2020-10-11 16:09:53,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:09:53,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:53,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:09:53,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:09:53,369 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-10-11 16:09:53,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:53,409 INFO L93 Difference]: Finished difference Result 96 states and 211 transitions. [2020-10-11 16:09:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:09:53,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-11 16:09:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:53,424 INFO L225 Difference]: With dead ends: 96 [2020-10-11 16:09:53,425 INFO L226 Difference]: Without dead ends: 95 [2020-10-11 16:09:53,426 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:09:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-11 16:09:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2020-10-11 16:09:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-11 16:09:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 180 transitions. [2020-10-11 16:09:53,475 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 180 transitions. Word has length 15 [2020-10-11 16:09:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:53,476 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 180 transitions. [2020-10-11 16:09:53,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:09:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 180 transitions. [2020-10-11 16:09:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 16:09:53,478 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:53,478 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:53,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:09:53,479 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:53,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:53,479 INFO L82 PathProgramCache]: Analyzing trace with hash -657301668, now seen corresponding path program 1 times [2020-10-11 16:09:53,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:53,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37848331] [2020-10-11 16:09:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:09:53,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37848331] [2020-10-11 16:09:53,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36172626] [2020-10-11 16:09:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:53,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-11 16:09:53,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 16:09:53,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 16:09:53,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-11 16:09:53,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339375844] [2020-10-11 16:09:53,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:09:53,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:53,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:09:53,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 16:09:53,619 INFO L87 Difference]: Start difference. First operand 82 states and 180 transitions. Second operand 3 states. [2020-10-11 16:09:53,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:53,637 INFO L93 Difference]: Finished difference Result 108 states and 242 transitions. [2020-10-11 16:09:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:09:53,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-11 16:09:53,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:53,640 INFO L225 Difference]: With dead ends: 108 [2020-10-11 16:09:53,640 INFO L226 Difference]: Without dead ends: 108 [2020-10-11 16:09:53,641 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 16:09:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-11 16:09:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 95. [2020-10-11 16:09:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-11 16:09:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 211 transitions. [2020-10-11 16:09:53,655 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 211 transitions. Word has length 17 [2020-10-11 16:09:53,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:53,655 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 211 transitions. [2020-10-11 16:09:53,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:09:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 211 transitions. [2020-10-11 16:09:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 16:09:53,657 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:53,658 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:53,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-11 16:09:53,874 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:53,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:53,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1653958726, now seen corresponding path program 1 times [2020-10-11 16:09:53,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:53,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869080582] [2020-10-11 16:09:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:09:53,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869080582] [2020-10-11 16:09:53,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246728774] [2020-10-11 16:09:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:53,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-11 16:09:53,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 16:09:53,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:09:53,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-11 16:09:53,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035998988] [2020-10-11 16:09:53,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 16:09:53,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:53,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 16:09:53,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-11 16:09:53,995 INFO L87 Difference]: Start difference. First operand 95 states and 211 transitions. Second operand 6 states. [2020-10-11 16:09:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:54,116 INFO L93 Difference]: Finished difference Result 197 states and 454 transitions. [2020-10-11 16:09:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 16:09:54,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-11 16:09:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:54,120 INFO L225 Difference]: With dead ends: 197 [2020-10-11 16:09:54,120 INFO L226 Difference]: Without dead ends: 197 [2020-10-11 16:09:54,121 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-11 16:09:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-11 16:09:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-10-11 16:09:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-11 16:09:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 363 transitions. [2020-10-11 16:09:54,140 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 363 transitions. Word has length 19 [2020-10-11 16:09:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:54,141 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 363 transitions. [2020-10-11 16:09:54,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 16:09:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 363 transitions. [2020-10-11 16:09:54,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-11 16:09:54,143 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:54,144 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:54,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:54,358 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:54,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2009767926, now seen corresponding path program 2 times [2020-10-11 16:09:54,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:54,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628828946] [2020-10-11 16:09:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:09:54,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628828946] [2020-10-11 16:09:54,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785584537] [2020-10-11 16:09:54,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:54,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:09:54,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:09:54,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 16:09:54,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:09:54,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:09:54,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-11 16:09:54,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714052750] [2020-10-11 16:09:54,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 16:09:54,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:54,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 16:09:54,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 16:09:54,545 INFO L87 Difference]: Start difference. First operand 159 states and 363 transitions. Second operand 6 states. [2020-10-11 16:09:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:54,570 INFO L93 Difference]: Finished difference Result 210 states and 486 transitions. [2020-10-11 16:09:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 16:09:54,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-11 16:09:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:54,574 INFO L225 Difference]: With dead ends: 210 [2020-10-11 16:09:54,574 INFO L226 Difference]: Without dead ends: 210 [2020-10-11 16:09:54,574 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 16:09:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-11 16:09:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 193. [2020-10-11 16:09:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-11 16:09:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 445 transitions. [2020-10-11 16:09:54,591 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 445 transitions. Word has length 23 [2020-10-11 16:09:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:54,592 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 445 transitions. [2020-10-11 16:09:54,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 16:09:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 445 transitions. [2020-10-11 16:09:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-11 16:09:54,595 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:54,595 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:54,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:54,807 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash -275132064, now seen corresponding path program 3 times [2020-10-11 16:09:54,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:54,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107656452] [2020-10-11 16:09:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:09:54,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107656452] [2020-10-11 16:09:54,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354051] [2020-10-11 16:09:54,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:54,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 16:09:54,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:09:54,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-11 16:09:54,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:09:55,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:09:55,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-11 16:09:55,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223914285] [2020-10-11 16:09:55,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:09:55,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:55,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:09:55,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:09:55,009 INFO L87 Difference]: Start difference. First operand 193 states and 445 transitions. Second operand 7 states. [2020-10-11 16:09:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:55,039 INFO L93 Difference]: Finished difference Result 244 states and 568 transitions. [2020-10-11 16:09:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:09:55,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-11 16:09:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:55,042 INFO L225 Difference]: With dead ends: 244 [2020-10-11 16:09:55,042 INFO L226 Difference]: Without dead ends: 244 [2020-10-11 16:09:55,043 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:09:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-11 16:09:55,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 227. [2020-10-11 16:09:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-11 16:09:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 527 transitions. [2020-10-11 16:09:55,058 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 527 transitions. Word has length 25 [2020-10-11 16:09:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:55,059 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 527 transitions. [2020-10-11 16:09:55,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:09:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 527 transitions. [2020-10-11 16:09:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 16:09:55,062 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:55,062 INFO L421 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:55,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:55,276 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:55,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1335734198, now seen corresponding path program 4 times [2020-10-11 16:09:55,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:55,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049754245] [2020-10-11 16:09:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:09:55,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049754245] [2020-10-11 16:09:55,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748050460] [2020-10-11 16:09:55,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:55,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:09:55,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:09:55,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 16:09:55,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:09:55,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:09:55,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-11 16:09:55,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002278372] [2020-10-11 16:09:55,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 16:09:55,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:55,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 16:09:55,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-11 16:09:55,449 INFO L87 Difference]: Start difference. First operand 227 states and 527 transitions. Second operand 8 states. [2020-10-11 16:09:55,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:55,476 INFO L93 Difference]: Finished difference Result 261 states and 609 transitions. [2020-10-11 16:09:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 16:09:55,477 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-11 16:09:55,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:55,479 INFO L225 Difference]: With dead ends: 261 [2020-10-11 16:09:55,479 INFO L226 Difference]: Without dead ends: 261 [2020-10-11 16:09:55,480 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-11 16:09:55,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-11 16:09:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2020-10-11 16:09:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-11 16:09:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 609 transitions. [2020-10-11 16:09:55,492 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 609 transitions. Word has length 27 [2020-10-11 16:09:55,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:55,493 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 609 transitions. [2020-10-11 16:09:55,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 16:09:55,493 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 609 transitions. [2020-10-11 16:09:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 16:09:55,495 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:55,495 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:55,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-11 16:09:55,711 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:55,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:55,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1627831476, now seen corresponding path program 5 times [2020-10-11 16:09:55,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:55,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462812032] [2020-10-11 16:09:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-11 16:09:55,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462812032] [2020-10-11 16:09:55,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900616302] [2020-10-11 16:09:55,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:55,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-11 16:09:55,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:09:55,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 16:09:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-11 16:09:55,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:09:55,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-11 16:09:55,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999694371] [2020-10-11 16:09:55,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 16:09:55,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:55,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 16:09:55,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 16:09:55,875 INFO L87 Difference]: Start difference. First operand 261 states and 609 transitions. Second operand 6 states. [2020-10-11 16:09:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:55,908 INFO L93 Difference]: Finished difference Result 354 states and 834 transitions. [2020-10-11 16:09:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 16:09:55,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-11 16:09:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:55,911 INFO L225 Difference]: With dead ends: 354 [2020-10-11 16:09:55,912 INFO L226 Difference]: Without dead ends: 354 [2020-10-11 16:09:55,912 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 16:09:55,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-11 16:09:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 323. [2020-10-11 16:09:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-11 16:09:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 759 transitions. [2020-10-11 16:09:55,923 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 759 transitions. Word has length 29 [2020-10-11 16:09:55,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:55,924 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 759 transitions. [2020-10-11 16:09:55,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 16:09:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 759 transitions. [2020-10-11 16:09:55,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-11 16:09:55,926 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:55,926 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:56,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:56,140 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:56,141 INFO L82 PathProgramCache]: Analyzing trace with hash 827854074, now seen corresponding path program 6 times [2020-10-11 16:09:56,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:56,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942241060] [2020-10-11 16:09:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-11 16:09:56,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942241060] [2020-10-11 16:09:56,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903701478] [2020-10-11 16:09:56,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:56,309 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-11 16:09:56,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:09:56,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-11 16:09:56,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-11 16:09:56,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:09:56,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-11 16:09:56,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66398389] [2020-10-11 16:09:56,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 16:09:56,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:56,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 16:09:56,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:09:56,334 INFO L87 Difference]: Start difference. First operand 323 states and 759 transitions. Second operand 7 states. [2020-10-11 16:09:56,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:56,358 INFO L93 Difference]: Finished difference Result 416 states and 984 transitions. [2020-10-11 16:09:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:09:56,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-11 16:09:56,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:56,362 INFO L225 Difference]: With dead ends: 416 [2020-10-11 16:09:56,362 INFO L226 Difference]: Without dead ends: 416 [2020-10-11 16:09:56,362 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:09:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-11 16:09:56,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 385. [2020-10-11 16:09:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-11 16:09:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 909 transitions. [2020-10-11 16:09:56,374 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 909 transitions. Word has length 31 [2020-10-11 16:09:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:56,375 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 909 transitions. [2020-10-11 16:09:56,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 16:09:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 909 transitions. [2020-10-11 16:09:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-11 16:09:56,376 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:56,376 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:56,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:56,591 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:56,591 INFO L82 PathProgramCache]: Analyzing trace with hash 848716736, now seen corresponding path program 7 times [2020-10-11 16:09:56,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:56,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632577663] [2020-10-11 16:09:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-11 16:09:56,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632577663] [2020-10-11 16:09:56,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649238161] [2020-10-11 16:09:56,667 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:56,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 16:09:56,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-11 16:09:56,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:09:56,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-11 16:09:56,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417659363] [2020-10-11 16:09:56,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 16:09:56,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:56,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 16:09:56,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-11 16:09:56,739 INFO L87 Difference]: Start difference. First operand 385 states and 909 transitions. Second operand 8 states. [2020-10-11 16:09:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:56,767 INFO L93 Difference]: Finished difference Result 447 states and 1059 transitions. [2020-10-11 16:09:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 16:09:56,768 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-11 16:09:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:56,771 INFO L225 Difference]: With dead ends: 447 [2020-10-11 16:09:56,771 INFO L226 Difference]: Without dead ends: 447 [2020-10-11 16:09:56,772 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-11 16:09:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-11 16:09:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2020-10-11 16:09:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-11 16:09:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1059 transitions. [2020-10-11 16:09:56,784 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1059 transitions. Word has length 33 [2020-10-11 16:09:56,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:56,784 INFO L481 AbstractCegarLoop]: Abstraction has 447 states and 1059 transitions. [2020-10-11 16:09:56,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 16:09:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1059 transitions. [2020-10-11 16:09:56,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:09:56,786 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:56,786 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:56,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-11 16:09:57,000 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:57,000 INFO L82 PathProgramCache]: Analyzing trace with hash -577101562, now seen corresponding path program 8 times [2020-10-11 16:09:57,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:57,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753010263] [2020-10-11 16:09:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 41 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:09:57,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753010263] [2020-10-11 16:09:57,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521165151] [2020-10-11 16:09:57,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:57,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:09:57,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:09:57,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-11 16:09:57,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:09:57,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 16:09:57,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21] total 23 [2020-10-11 16:09:57,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803704173] [2020-10-11 16:09:57,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:09:57,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:57,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:09:57,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2020-10-11 16:09:57,369 INFO L87 Difference]: Start difference. First operand 447 states and 1059 transitions. Second operand 23 states. [2020-10-11 16:09:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:58,083 INFO L93 Difference]: Finished difference Result 1728 states and 4029 transitions. [2020-10-11 16:09:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-11 16:09:58,083 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:09:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:58,088 INFO L225 Difference]: With dead ends: 1728 [2020-10-11 16:09:58,089 INFO L226 Difference]: Without dead ends: 876 [2020-10-11 16:09:58,090 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=720, Invalid=1632, Unknown=0, NotChecked=0, Total=2352 [2020-10-11 16:09:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-11 16:09:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 585. [2020-10-11 16:09:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-11 16:09:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1403 transitions. [2020-10-11 16:09:58,107 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1403 transitions. Word has length 35 [2020-10-11 16:09:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:58,107 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1403 transitions. [2020-10-11 16:09:58,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:09:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1403 transitions. [2020-10-11 16:09:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:09:58,109 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:58,110 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:58,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:58,324 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:58,325 INFO L82 PathProgramCache]: Analyzing trace with hash 915971432, now seen corresponding path program 9 times [2020-10-11 16:09:58,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:58,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391656722] [2020-10-11 16:09:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:09:58,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391656722] [2020-10-11 16:09:58,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210525365] [2020-10-11 16:09:58,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:58,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-11 16:09:58,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:09:58,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-11 16:09:58,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:09:58,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:09:58,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-11 16:09:58,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715685778] [2020-10-11 16:09:58,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:09:58,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:58,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:09:58,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:09:58,647 INFO L87 Difference]: Start difference. First operand 585 states and 1403 transitions. Second operand 23 states. [2020-10-11 16:09:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:09:59,288 INFO L93 Difference]: Finished difference Result 1731 states and 4053 transitions. [2020-10-11 16:09:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:09:59,289 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:09:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:09:59,293 INFO L225 Difference]: With dead ends: 1731 [2020-10-11 16:09:59,294 INFO L226 Difference]: Without dead ends: 816 [2020-10-11 16:09:59,295 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=566, Invalid=1414, Unknown=0, NotChecked=0, Total=1980 [2020-10-11 16:09:59,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-10-11 16:09:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 569. [2020-10-11 16:09:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-11 16:09:59,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1355 transitions. [2020-10-11 16:09:59,310 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1355 transitions. Word has length 35 [2020-10-11 16:09:59,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:09:59,311 INFO L481 AbstractCegarLoop]: Abstraction has 569 states and 1355 transitions. [2020-10-11 16:09:59,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:09:59,311 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1355 transitions. [2020-10-11 16:09:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:09:59,313 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:09:59,313 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:09:59,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:59,527 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:09:59,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:09:59,527 INFO L82 PathProgramCache]: Analyzing trace with hash -570341976, now seen corresponding path program 10 times [2020-10-11 16:09:59,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:09:59,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635738432] [2020-10-11 16:09:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:09:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:09:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:09:59,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635738432] [2020-10-11 16:09:59,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520927006] [2020-10-11 16:09:59,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:09:59,792 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:09:59,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:09:59,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-11 16:09:59,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:09:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:09:59,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:09:59,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-11 16:09:59,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607851850] [2020-10-11 16:09:59,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:09:59,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:09:59,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:09:59,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:09:59,867 INFO L87 Difference]: Start difference. First operand 569 states and 1355 transitions. Second operand 23 states. [2020-10-11 16:10:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:00,512 INFO L93 Difference]: Finished difference Result 2131 states and 4974 transitions. [2020-10-11 16:10:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-11 16:10:00,513 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:10:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:00,523 INFO L225 Difference]: With dead ends: 2131 [2020-10-11 16:10:00,523 INFO L226 Difference]: Without dead ends: 792 [2020-10-11 16:10:00,524 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=558, Invalid=1422, Unknown=0, NotChecked=0, Total=1980 [2020-10-11 16:10:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-11 16:10:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 553. [2020-10-11 16:10:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-11 16:10:00,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1307 transitions. [2020-10-11 16:10:00,554 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1307 transitions. Word has length 35 [2020-10-11 16:10:00,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:00,555 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1307 transitions. [2020-10-11 16:10:00,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:10:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1307 transitions. [2020-10-11 16:10:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:00,557 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:00,557 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:00,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-11 16:10:00,771 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1306582504, now seen corresponding path program 11 times [2020-10-11 16:10:00,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:00,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574292061] [2020-10-11 16:10:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:01,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574292061] [2020-10-11 16:10:01,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699740989] [2020-10-11 16:10:01,022 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:01,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-11 16:10:01,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:01,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-11 16:10:01,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:01,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:01,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-11 16:10:01,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879710329] [2020-10-11 16:10:01,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:10:01,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:01,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:10:01,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:10:01,111 INFO L87 Difference]: Start difference. First operand 553 states and 1307 transitions. Second operand 23 states. [2020-10-11 16:10:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:01,746 INFO L93 Difference]: Finished difference Result 2670 states and 6229 transitions. [2020-10-11 16:10:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-11 16:10:01,747 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:10:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:01,752 INFO L225 Difference]: With dead ends: 2670 [2020-10-11 16:10:01,752 INFO L226 Difference]: Without dead ends: 768 [2020-10-11 16:10:01,753 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=588, Invalid=1482, Unknown=0, NotChecked=0, Total=2070 [2020-10-11 16:10:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-11 16:10:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 537. [2020-10-11 16:10:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-11 16:10:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1259 transitions. [2020-10-11 16:10:01,768 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1259 transitions. Word has length 35 [2020-10-11 16:10:01,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:01,768 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 1259 transitions. [2020-10-11 16:10:01,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:10:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1259 transitions. [2020-10-11 16:10:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:01,770 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:01,770 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:01,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-11 16:10:01,984 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:01,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1144743464, now seen corresponding path program 12 times [2020-10-11 16:10:01,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:01,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289876981] [2020-10-11 16:10:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:02,205 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:02,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289876981] [2020-10-11 16:10:02,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180073793] [2020-10-11 16:10:02,206 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:02,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-11 16:10:02,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:02,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-11 16:10:02,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:02,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:02,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-11 16:10:02,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132258067] [2020-10-11 16:10:02,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:10:02,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:02,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:10:02,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:10:02,314 INFO L87 Difference]: Start difference. First operand 537 states and 1259 transitions. Second operand 23 states. [2020-10-11 16:10:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:03,197 INFO L93 Difference]: Finished difference Result 3250 states and 7573 transitions. [2020-10-11 16:10:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-11 16:10:03,203 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:10:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:03,213 INFO L225 Difference]: With dead ends: 3250 [2020-10-11 16:10:03,213 INFO L226 Difference]: Without dead ends: 2437 [2020-10-11 16:10:03,214 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2020-10-11 16:10:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2020-10-11 16:10:03,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 1276. [2020-10-11 16:10:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-11 16:10:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 3101 transitions. [2020-10-11 16:10:03,255 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 3101 transitions. Word has length 35 [2020-10-11 16:10:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:03,255 INFO L481 AbstractCegarLoop]: Abstraction has 1276 states and 3101 transitions. [2020-10-11 16:10:03,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:10:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 3101 transitions. [2020-10-11 16:10:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:03,258 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:03,258 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:03,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-11 16:10:03,474 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:03,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:03,474 INFO L82 PathProgramCache]: Analyzing trace with hash 909108414, now seen corresponding path program 13 times [2020-10-11 16:10:03,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:03,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296563640] [2020-10-11 16:10:03,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 16:10:03,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296563640] [2020-10-11 16:10:03,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984003468] [2020-10-11 16:10:03,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:03,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-11 16:10:03,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 16:10:03,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:03,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-11 16:10:03,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092361556] [2020-10-11 16:10:03,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-11 16:10:03,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:03,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-11 16:10:03,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-10-11 16:10:03,744 INFO L87 Difference]: Start difference. First operand 1276 states and 3101 transitions. Second operand 21 states. [2020-10-11 16:10:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:04,493 INFO L93 Difference]: Finished difference Result 2721 states and 6420 transitions. [2020-10-11 16:10:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-11 16:10:04,494 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-11 16:10:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:04,504 INFO L225 Difference]: With dead ends: 2721 [2020-10-11 16:10:04,504 INFO L226 Difference]: Without dead ends: 2040 [2020-10-11 16:10:04,506 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=690, Invalid=1860, Unknown=0, NotChecked=0, Total=2550 [2020-10-11 16:10:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-10-11 16:10:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1192. [2020-10-11 16:10:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-10-11 16:10:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 2873 transitions. [2020-10-11 16:10:04,538 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 2873 transitions. Word has length 35 [2020-10-11 16:10:04,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:04,538 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 2873 transitions. [2020-10-11 16:10:04,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-11 16:10:04,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 2873 transitions. [2020-10-11 16:10:04,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:04,542 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:04,542 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:04,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:04,757 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:04,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1383117118, now seen corresponding path program 14 times [2020-10-11 16:10:04,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:04,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534923101] [2020-10-11 16:10:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:10:04,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534923101] [2020-10-11 16:10:04,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333203537] [2020-10-11 16:10:04,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:04,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:10:04,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:04,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-11 16:10:04,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:10:05,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:05,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-10-11 16:10:05,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201635123] [2020-10-11 16:10:05,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 16:10:05,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:05,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 16:10:05,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-11 16:10:05,007 INFO L87 Difference]: Start difference. First operand 1192 states and 2873 transitions. Second operand 19 states. [2020-10-11 16:10:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:05,574 INFO L93 Difference]: Finished difference Result 2550 states and 5976 transitions. [2020-10-11 16:10:05,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-11 16:10:05,574 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-11 16:10:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:05,583 INFO L225 Difference]: With dead ends: 2550 [2020-10-11 16:10:05,583 INFO L226 Difference]: Without dead ends: 1781 [2020-10-11 16:10:05,584 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=511, Invalid=1381, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 16:10:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2020-10-11 16:10:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1058. [2020-10-11 16:10:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-11 16:10:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 2526 transitions. [2020-10-11 16:10:05,612 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 2526 transitions. Word has length 35 [2020-10-11 16:10:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:05,612 INFO L481 AbstractCegarLoop]: Abstraction has 1058 states and 2526 transitions. [2020-10-11 16:10:05,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 16:10:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 2526 transitions. [2020-10-11 16:10:05,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:05,615 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:05,615 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:05,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-11 16:10:05,829 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:05,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:05,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1638948286, now seen corresponding path program 15 times [2020-10-11 16:10:05,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:05,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519508205] [2020-10-11 16:10:05,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-11 16:10:05,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519508205] [2020-10-11 16:10:05,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359673493] [2020-10-11 16:10:05,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:06,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-11 16:10:06,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:06,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-11 16:10:06,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-11 16:10:06,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:06,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-10-11 16:10:06,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437028871] [2020-10-11 16:10:06,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 16:10:06,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:06,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 16:10:06,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-11 16:10:06,041 INFO L87 Difference]: Start difference. First operand 1058 states and 2526 transitions. Second operand 17 states. [2020-10-11 16:10:06,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:06,488 INFO L93 Difference]: Finished difference Result 2371 states and 5518 transitions. [2020-10-11 16:10:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 16:10:06,488 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2020-10-11 16:10:06,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:06,495 INFO L225 Difference]: With dead ends: 2371 [2020-10-11 16:10:06,495 INFO L226 Difference]: Without dead ends: 1444 [2020-10-11 16:10:06,496 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 16:10:06,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-10-11 16:10:06,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 874. [2020-10-11 16:10:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2020-10-11 16:10:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 2060 transitions. [2020-10-11 16:10:06,516 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 2060 transitions. Word has length 35 [2020-10-11 16:10:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:06,516 INFO L481 AbstractCegarLoop]: Abstraction has 874 states and 2060 transitions. [2020-10-11 16:10:06,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 16:10:06,516 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 2060 transitions. [2020-10-11 16:10:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:06,518 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:06,519 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:06,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-11 16:10:06,732 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:06,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1615402434, now seen corresponding path program 16 times [2020-10-11 16:10:06,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:06,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078363017] [2020-10-11 16:10:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-11 16:10:06,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078363017] [2020-10-11 16:10:06,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515963393] [2020-10-11 16:10:06,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:06,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:10:06,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:06,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 16:10:06,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-11 16:10:06,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:06,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-11 16:10:06,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853636114] [2020-10-11 16:10:06,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 16:10:06,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:06,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 16:10:06,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:10:06,941 INFO L87 Difference]: Start difference. First operand 874 states and 2060 transitions. Second operand 15 states. [2020-10-11 16:10:07,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:07,264 INFO L93 Difference]: Finished difference Result 1669 states and 3808 transitions. [2020-10-11 16:10:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 16:10:07,264 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-10-11 16:10:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:07,268 INFO L225 Difference]: With dead ends: 1669 [2020-10-11 16:10:07,268 INFO L226 Difference]: Without dead ends: 744 [2020-10-11 16:10:07,269 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2020-10-11 16:10:07,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-11 16:10:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 521. [2020-10-11 16:10:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-11 16:10:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1211 transitions. [2020-10-11 16:10:07,281 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1211 transitions. Word has length 35 [2020-10-11 16:10:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:07,281 INFO L481 AbstractCegarLoop]: Abstraction has 521 states and 1211 transitions. [2020-10-11 16:10:07,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 16:10:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1211 transitions. [2020-10-11 16:10:07,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:07,282 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:07,283 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:07,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-11 16:10:07,498 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:07,499 INFO L82 PathProgramCache]: Analyzing trace with hash 236248680, now seen corresponding path program 17 times [2020-10-11 16:10:07,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:07,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165868363] [2020-10-11 16:10:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:07,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165868363] [2020-10-11 16:10:07,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391366746] [2020-10-11 16:10:07,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:07,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-11 16:10:07,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:07,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-11 16:10:07,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:07,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:07,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-11 16:10:07,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387427492] [2020-10-11 16:10:07,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:10:07,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:07,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:10:07,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:10:07,814 INFO L87 Difference]: Start difference. First operand 521 states and 1211 transitions. Second operand 23 states. [2020-10-11 16:10:08,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:08,407 INFO L93 Difference]: Finished difference Result 1734 states and 4025 transitions. [2020-10-11 16:10:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-11 16:10:08,407 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:10:08,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:08,411 INFO L225 Difference]: With dead ends: 1734 [2020-10-11 16:10:08,411 INFO L226 Difference]: Without dead ends: 894 [2020-10-11 16:10:08,412 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=544, Invalid=1348, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 16:10:08,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-11 16:10:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 582. [2020-10-11 16:10:08,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-11 16:10:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1364 transitions. [2020-10-11 16:10:08,424 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1364 transitions. Word has length 35 [2020-10-11 16:10:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:08,424 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 1364 transitions. [2020-10-11 16:10:08,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:10:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1364 transitions. [2020-10-11 16:10:08,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:08,425 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:08,425 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:08,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:08,639 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:08,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:08,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1268277900, now seen corresponding path program 18 times [2020-10-11 16:10:08,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:08,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843660484] [2020-10-11 16:10:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:08,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843660484] [2020-10-11 16:10:08,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612882246] [2020-10-11 16:10:08,848 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:08,903 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-10-11 16:10:08,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:08,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-11 16:10:08,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:08,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:08,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-11 16:10:08,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252117021] [2020-10-11 16:10:08,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:10:08,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:08,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:10:08,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:10:08,950 INFO L87 Difference]: Start difference. First operand 582 states and 1364 transitions. Second operand 23 states. [2020-10-11 16:10:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:09,543 INFO L93 Difference]: Finished difference Result 1717 states and 3982 transitions. [2020-10-11 16:10:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-11 16:10:09,544 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:10:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:09,550 INFO L225 Difference]: With dead ends: 1717 [2020-10-11 16:10:09,550 INFO L226 Difference]: Without dead ends: 774 [2020-10-11 16:10:09,551 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=538, Invalid=1354, Unknown=0, NotChecked=0, Total=1892 [2020-10-11 16:10:09,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-10-11 16:10:09,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 538. [2020-10-11 16:10:09,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-11 16:10:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1256 transitions. [2020-10-11 16:10:09,561 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1256 transitions. Word has length 35 [2020-10-11 16:10:09,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:09,561 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1256 transitions. [2020-10-11 16:10:09,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:10:09,561 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1256 transitions. [2020-10-11 16:10:09,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:09,562 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:09,562 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:09,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:09,777 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash -905226112, now seen corresponding path program 19 times [2020-10-11 16:10:09,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:09,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760487997] [2020-10-11 16:10:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:09,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760487997] [2020-10-11 16:10:09,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108212979] [2020-10-11 16:10:09,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:10,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-11 16:10:10,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:10,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:10,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-11 16:10:10,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302357487] [2020-10-11 16:10:10,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:10:10,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:10,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:10:10,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:10:10,052 INFO L87 Difference]: Start difference. First operand 538 states and 1256 transitions. Second operand 23 states. [2020-10-11 16:10:10,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:10,655 INFO L93 Difference]: Finished difference Result 2063 states and 4783 transitions. [2020-10-11 16:10:10,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-11 16:10:10,655 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:10:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:10,659 INFO L225 Difference]: With dead ends: 2063 [2020-10-11 16:10:10,659 INFO L226 Difference]: Without dead ends: 716 [2020-10-11 16:10:10,660 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=569, Invalid=1411, Unknown=0, NotChecked=0, Total=1980 [2020-10-11 16:10:10,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-11 16:10:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 494. [2020-10-11 16:10:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-10-11 16:10:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1148 transitions. [2020-10-11 16:10:10,669 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1148 transitions. Word has length 35 [2020-10-11 16:10:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:10,669 INFO L481 AbstractCegarLoop]: Abstraction has 494 states and 1148 transitions. [2020-10-11 16:10:10,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:10:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1148 transitions. [2020-10-11 16:10:10,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:10,670 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:10,671 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:10,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-11 16:10:10,885 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:10,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:10,885 INFO L82 PathProgramCache]: Analyzing trace with hash 95191180, now seen corresponding path program 20 times [2020-10-11 16:10:10,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:10,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775200772] [2020-10-11 16:10:10,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:11,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775200772] [2020-10-11 16:10:11,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641934918] [2020-10-11 16:10:11,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:11,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:10:11,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:11,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-11 16:10:11,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:11,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:11,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-11 16:10:11,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733844409] [2020-10-11 16:10:11,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:10:11,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:11,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:10:11,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:10:11,216 INFO L87 Difference]: Start difference. First operand 494 states and 1148 transitions. Second operand 23 states. [2020-10-11 16:10:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:11,864 INFO L93 Difference]: Finished difference Result 2541 states and 5902 transitions. [2020-10-11 16:10:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-11 16:10:11,864 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:10:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:11,868 INFO L225 Difference]: With dead ends: 2541 [2020-10-11 16:10:11,868 INFO L226 Difference]: Without dead ends: 658 [2020-10-11 16:10:11,869 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=596, Invalid=1474, Unknown=0, NotChecked=0, Total=2070 [2020-10-11 16:10:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-11 16:10:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 450. [2020-10-11 16:10:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-11 16:10:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1040 transitions. [2020-10-11 16:10:11,879 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1040 transitions. Word has length 35 [2020-10-11 16:10:11,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:11,879 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 1040 transitions. [2020-10-11 16:10:11,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:10:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1040 transitions. [2020-10-11 16:10:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:11,880 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:11,880 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:12,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-11 16:10:12,093 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:12,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash -576465512, now seen corresponding path program 21 times [2020-10-11 16:10:12,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:12,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332290174] [2020-10-11 16:10:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:12,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332290174] [2020-10-11 16:10:12,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030496132] [2020-10-11 16:10:12,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:12,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-11 16:10:12,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:12,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-11 16:10:12,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:12,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:12,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-11 16:10:12,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922059664] [2020-10-11 16:10:12,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 16:10:12,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:12,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 16:10:12,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:10:12,421 INFO L87 Difference]: Start difference. First operand 450 states and 1040 transitions. Second operand 23 states. [2020-10-11 16:10:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:13,379 INFO L93 Difference]: Finished difference Result 2473 states and 5749 transitions. [2020-10-11 16:10:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-11 16:10:13,379 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-11 16:10:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:13,388 INFO L225 Difference]: With dead ends: 2473 [2020-10-11 16:10:13,389 INFO L226 Difference]: Without dead ends: 1507 [2020-10-11 16:10:13,390 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=823, Invalid=2257, Unknown=0, NotChecked=0, Total=3080 [2020-10-11 16:10:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-10-11 16:10:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 771. [2020-10-11 16:10:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2020-10-11 16:10:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1835 transitions. [2020-10-11 16:10:13,416 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1835 transitions. Word has length 35 [2020-10-11 16:10:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:13,417 INFO L481 AbstractCegarLoop]: Abstraction has 771 states and 1835 transitions. [2020-10-11 16:10:13,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 16:10:13,417 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1835 transitions. [2020-10-11 16:10:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:13,419 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:13,419 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:13,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:13,632 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash -365571194, now seen corresponding path program 22 times [2020-10-11 16:10:13,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:13,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686645347] [2020-10-11 16:10:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:13,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686645347] [2020-10-11 16:10:13,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105962223] [2020-10-11 16:10:13,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:13,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 16:10:13,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:13,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-11 16:10:13,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:13,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:13,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-11 16:10:13,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136245405] [2020-10-11 16:10:13,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-11 16:10:13,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:13,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-11 16:10:13,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-11 16:10:13,911 INFO L87 Difference]: Start difference. First operand 771 states and 1835 transitions. Second operand 21 states. [2020-10-11 16:10:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:14,544 INFO L93 Difference]: Finished difference Result 1951 states and 4562 transitions. [2020-10-11 16:10:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-11 16:10:14,545 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-11 16:10:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:14,549 INFO L225 Difference]: With dead ends: 1951 [2020-10-11 16:10:14,550 INFO L226 Difference]: Without dead ends: 1081 [2020-10-11 16:10:14,551 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=628, Invalid=1724, Unknown=0, NotChecked=0, Total=2352 [2020-10-11 16:10:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-10-11 16:10:14,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 637. [2020-10-11 16:10:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2020-10-11 16:10:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1488 transitions. [2020-10-11 16:10:14,567 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1488 transitions. Word has length 35 [2020-10-11 16:10:14,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:14,567 INFO L481 AbstractCegarLoop]: Abstraction has 637 states and 1488 transitions. [2020-10-11 16:10:14,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-11 16:10:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1488 transitions. [2020-10-11 16:10:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:14,569 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:14,569 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:14,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-11 16:10:14,784 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:14,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:14,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2092017522, now seen corresponding path program 23 times [2020-10-11 16:10:14,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:14,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577480242] [2020-10-11 16:10:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 16:10:14,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577480242] [2020-10-11 16:10:14,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143413697] [2020-10-11 16:10:14,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:14,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-11 16:10:14,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:14,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-11 16:10:14,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 16:10:15,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:15,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-10-11 16:10:15,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735186463] [2020-10-11 16:10:15,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-11 16:10:15,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:15,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-11 16:10:15,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-10-11 16:10:15,003 INFO L87 Difference]: Start difference. First operand 637 states and 1488 transitions. Second operand 19 states. [2020-10-11 16:10:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:15,551 INFO L93 Difference]: Finished difference Result 1790 states and 4143 transitions. [2020-10-11 16:10:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-11 16:10:15,552 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-11 16:10:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:15,555 INFO L225 Difference]: With dead ends: 1790 [2020-10-11 16:10:15,555 INFO L226 Difference]: Without dead ends: 744 [2020-10-11 16:10:15,556 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2020-10-11 16:10:15,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-11 16:10:15,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 453. [2020-10-11 16:10:15,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-11 16:10:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1022 transitions. [2020-10-11 16:10:15,564 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1022 transitions. Word has length 35 [2020-10-11 16:10:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:15,564 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 1022 transitions. [2020-10-11 16:10:15,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-11 16:10:15,564 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1022 transitions. [2020-10-11 16:10:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-11 16:10:15,565 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:15,566 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:15,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:15,767 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1602760798, now seen corresponding path program 24 times [2020-10-11 16:10:15,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:15,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204022541] [2020-10-11 16:10:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:10:15,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204022541] [2020-10-11 16:10:15,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596328563] [2020-10-11 16:10:15,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:15,938 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-11 16:10:15,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:15,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-11 16:10:15,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-11 16:10:15,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:15,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-10-11 16:10:15,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345264303] [2020-10-11 16:10:15,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 16:10:15,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:15,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 16:10:15,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-11 16:10:15,991 INFO L87 Difference]: Start difference. First operand 453 states and 1022 transitions. Second operand 17 states. [2020-10-11 16:10:16,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:16,390 INFO L93 Difference]: Finished difference Result 1084 states and 2413 transitions. [2020-10-11 16:10:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 16:10:16,391 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2020-10-11 16:10:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:16,391 INFO L225 Difference]: With dead ends: 1084 [2020-10-11 16:10:16,391 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 16:10:16,392 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=868, Unknown=0, NotChecked=0, Total=1190 [2020-10-11 16:10:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 16:10:16,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 16:10:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 16:10:16,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 16:10:16,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-11 16:10:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:16,393 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 16:10:16,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 16:10:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 16:10:16,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 16:10:16,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-11 16:10:16,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 04:10:16 BasicIcfg [2020-10-11 16:10:16,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 16:10:16,599 INFO L168 Benchmark]: Toolchain (without parser) took 25278.54 ms. Allocated memory was 250.1 MB in the beginning and 553.6 MB in the end (delta: 303.6 MB). Free memory was 203.6 MB in the beginning and 165.6 MB in the end (delta: 38.0 MB). Peak memory consumption was 341.6 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:16,600 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 250.1 MB. Free memory was 228.1 MB in the beginning and 227.3 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. [2020-10-11 16:10:16,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.29 ms. Allocated memory was 250.1 MB in the beginning and 311.4 MB in the end (delta: 61.3 MB). Free memory was 203.6 MB in the beginning and 285.7 MB in the end (delta: -82.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:16,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.44 ms. Allocated memory is still 311.4 MB. Free memory was 285.7 MB in the beginning and 284.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:16,601 INFO L168 Benchmark]: Boogie Preprocessor took 24.31 ms. Allocated memory is still 311.4 MB. Free memory was 284.0 MB in the beginning and 281.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:16,606 INFO L168 Benchmark]: RCFGBuilder took 454.41 ms. Allocated memory is still 311.4 MB. Free memory was 281.1 MB in the beginning and 264.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:16,607 INFO L168 Benchmark]: TraceAbstraction took 24432.24 ms. Allocated memory was 311.4 MB in the beginning and 553.6 MB in the end (delta: 242.2 MB). Free memory was 264.3 MB in the beginning and 165.6 MB in the end (delta: 98.6 MB). Peak memory consumption was 340.9 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:16,611 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 250.1 MB. Free memory was 228.1 MB in the beginning and 227.3 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 323.29 ms. Allocated memory was 250.1 MB in the beginning and 311.4 MB in the end (delta: 61.3 MB). Free memory was 203.6 MB in the beginning and 285.7 MB in the end (delta: -82.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 38.44 ms. Allocated memory is still 311.4 MB. Free memory was 285.7 MB in the beginning and 284.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.31 ms. Allocated memory is still 311.4 MB. Free memory was 284.0 MB in the beginning and 281.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.2 GB. * RCFGBuilder took 454.41 ms. Allocated memory is still 311.4 MB. Free memory was 281.1 MB in the beginning and 264.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 24432.24 ms. Allocated memory was 311.4 MB in the beginning and 553.6 MB in the end (delta: 242.2 MB). Free memory was 264.3 MB in the beginning and 165.6 MB in the end (delta: 98.6 MB). Peak memory consumption was 340.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 351 VarBasedMoverChecksPositive, 8 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.8s, 57 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 24 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 4 FixpointIterations, 16 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 34 TotalNumberOfCompositions, 866 MoverChecksTotal - PositiveResult [Line: 46]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.2s, OverallIterations: 26, TraceHistogramMax: 5, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 1926 SDtfs, 9011 SDslu, 9317 SDs, 0 SdLazy, 5664 SolverSat, 1140 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1525 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 774 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6305 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1276occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 26 MinimizatonAttempts, 7142 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1613 NumberOfCodeBlocks, 1613 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 1562 ConstructedInterpolants, 0 QuantifiedInterpolants, 141580 SizeOfPredicates, 284 NumberOfNonLiveVariables, 2584 ConjunctsInSsa, 345 ConjunctsInUnsatCore, 51 InterpolantComputations, 3 PerfectInterpolantSequences, 1427/1996 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...