/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 12:50:55,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 12:50:55,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 12:50:55,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 12:50:55,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 12:50:55,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 12:50:55,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 12:50:55,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 12:50:55,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 12:50:55,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 12:50:55,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 12:50:55,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 12:50:55,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 12:50:55,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 12:50:55,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 12:50:55,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 12:50:55,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 12:50:55,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 12:50:55,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 12:50:55,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 12:50:55,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 12:50:55,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 12:50:55,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 12:50:55,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 12:50:55,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 12:50:55,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 12:50:55,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 12:50:55,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 12:50:55,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 12:50:55,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 12:50:55,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 12:50:55,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 12:50:55,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 12:50:55,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 12:50:55,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 12:50:55,241 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 12:50:55,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 12:50:55,242 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 12:50:55,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 12:50:55,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 12:50:55,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 12:50:55,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 12:50:55,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 12:50:55,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 12:50:55,242 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 12:50:55,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 12:50:55,243 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 12:50:55,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 12:50:55,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 12:50:55,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 12:50:55,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 12:50:55,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 12:50:55,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 12:50:55,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 12:50:55,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 12:50:55,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 12:50:55,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 12:50:55,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 12:50:55,244 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 12:50:55,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 12:50:55,244 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 12:50:55,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 12:50:55,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 12:50:55,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 12:50:55,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 12:50:55,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 12:50:55,518 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 12:50:55,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2021-06-05 12:50:55,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9127a1de9/87d0b8d770384c939f9e9b47cb8e8b57/FLAG735c02d11 [2021-06-05 12:50:55,940 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 12:50:55,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2021-06-05 12:50:55,941 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:50:55,941 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:50:55,942 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-05 12:50:55,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9127a1de9/87d0b8d770384c939f9e9b47cb8e8b57/FLAG735c02d11 [2021-06-05 12:50:56,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9127a1de9/87d0b8d770384c939f9e9b47cb8e8b57 [2021-06-05 12:50:56,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 12:50:56,365 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 12:50:56,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 12:50:56,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 12:50:56,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 12:50:56,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eae5c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56, skipping insertion in model container [2021-06-05 12:50:56,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 12:50:56,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 12:50:56,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:50:56,504 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 12:50:56,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 12:50:56,528 INFO L208 MainTranslator]: Completed translation [2021-06-05 12:50:56,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56 WrapperNode [2021-06-05 12:50:56,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 12:50:56,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 12:50:56,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 12:50:56,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 12:50:56,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 12:50:56,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 12:50:56,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 12:50:56,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 12:50:56,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... [2021-06-05 12:50:56,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 12:50:56,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 12:50:56,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 12:50:56,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 12:50:56,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 12:50:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 12:50:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 12:50:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 12:50:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 12:50:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2021-06-05 12:50:56,621 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2021-06-05 12:50:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2021-06-05 12:50:56,621 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2021-06-05 12:50:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 12:50:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 12:50:56,622 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 12:50:56,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 12:50:56,860 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-05 12:50:56,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:50:56 BoogieIcfgContainer [2021-06-05 12:50:56,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 12:50:56,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 12:50:56,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 12:50:56,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 12:50:56,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:50:56" (1/3) ... [2021-06-05 12:50:56,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9c6cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:50:56, skipping insertion in model container [2021-06-05 12:50:56,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:50:56" (2/3) ... [2021-06-05 12:50:56,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9c6cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:50:56, skipping insertion in model container [2021-06-05 12:50:56,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:50:56" (3/3) ... [2021-06-05 12:50:56,866 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2021-06-05 12:50:56,871 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 12:50:56,872 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 12:50:56,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 12:50:56,872 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 12:50:56,899 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,900 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,900 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,900 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,900 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,900 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,901 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,901 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,901 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,901 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,902 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,902 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,902 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,902 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,902 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,903 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,903 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,903 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,903 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,903 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,904 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,904 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,904 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,904 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,904 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,905 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,905 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,905 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,905 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,905 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,905 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,906 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,906 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,906 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,906 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,907 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,907 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,907 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,907 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,907 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,907 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,907 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,907 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,907 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,910 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,910 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,910 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,911 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,911 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork0_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,915 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,915 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,915 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,916 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,916 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 12:50:56,935 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 12:50:56,952 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 12:50:56,972 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 12:50:56,972 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 12:50:56,972 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 12:50:56,972 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 12:50:56,972 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 12:50:56,972 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 12:50:56,972 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 12:50:56,973 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 12:50:56,983 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 62 transitions, 146 flow [2021-06-05 12:50:57,022 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 544 states, 542 states have (on average 2.688191881918819) internal successors, (1457), 543 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 544 states, 542 states have (on average 2.688191881918819) internal successors, (1457), 543 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 12:50:57,049 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:50:57,050 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:50:57,051 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:50:57,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:50:57,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1921878319, now seen corresponding path program 1 times [2021-06-05 12:50:57,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:50:57,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443470818] [2021-06-05 12:50:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:50:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:50:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:50:57,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:50:57,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443470818] [2021-06-05 12:50:57,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443470818] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:50:57,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:50:57,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 12:50:57,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030908540] [2021-06-05 12:50:57,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 12:50:57,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:50:57,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 12:50:57,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 12:50:57,181 INFO L87 Difference]: Start difference. First operand has 544 states, 542 states have (on average 2.688191881918819) internal successors, (1457), 543 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:50:57,198 INFO L93 Difference]: Finished difference Result 544 states and 1365 transitions. [2021-06-05 12:50:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 12:50:57,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 12:50:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:50:57,210 INFO L225 Difference]: With dead ends: 544 [2021-06-05 12:50:57,211 INFO L226 Difference]: Without dead ends: 536 [2021-06-05 12:50:57,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 12:50:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-06-05 12:50:57,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2021-06-05 12:50:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 2.5364485981308413) internal successors, (1357), 535 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1357 transitions. [2021-06-05 12:50:57,263 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1357 transitions. Word has length 36 [2021-06-05 12:50:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:50:57,263 INFO L482 AbstractCegarLoop]: Abstraction has 536 states and 1357 transitions. [2021-06-05 12:50:57,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1357 transitions. [2021-06-05 12:50:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-06-05 12:50:57,265 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:50:57,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:50:57,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 12:50:57,265 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:50:57,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:50:57,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2134152753, now seen corresponding path program 1 times [2021-06-05 12:50:57,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:50:57,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240036712] [2021-06-05 12:50:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:50:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:50:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:50:57,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:50:57,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240036712] [2021-06-05 12:50:57,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240036712] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:50:57,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 12:50:57,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 12:50:57,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579349824] [2021-06-05 12:50:57,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 12:50:57,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:50:57,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 12:50:57,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 12:50:57,337 INFO L87 Difference]: Start difference. First operand 536 states and 1357 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:50:57,359 INFO L93 Difference]: Finished difference Result 781 states and 1997 transitions. [2021-06-05 12:50:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 12:50:57,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-06-05 12:50:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:50:57,365 INFO L225 Difference]: With dead ends: 781 [2021-06-05 12:50:57,365 INFO L226 Difference]: Without dead ends: 781 [2021-06-05 12:50:57,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 12:50:57,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-06-05 12:50:57,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 585. [2021-06-05 12:50:57,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 2.5428082191780823) internal successors, (1485), 584 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1485 transitions. [2021-06-05 12:50:57,399 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1485 transitions. Word has length 36 [2021-06-05 12:50:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:50:57,399 INFO L482 AbstractCegarLoop]: Abstraction has 585 states and 1485 transitions. [2021-06-05 12:50:57,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1485 transitions. [2021-06-05 12:50:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-05 12:50:57,402 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:50:57,403 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:50:57,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 12:50:57,403 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:50:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:50:57,409 INFO L82 PathProgramCache]: Analyzing trace with hash 753424717, now seen corresponding path program 1 times [2021-06-05 12:50:57,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:50:57,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706649408] [2021-06-05 12:50:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:50:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:50:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:50:57,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:50:57,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706649408] [2021-06-05 12:50:57,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706649408] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:50:57,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023987049] [2021-06-05 12:50:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:50:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:50:57,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-05 12:50:57,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:50:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 12:50:57,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023987049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:50:57,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 12:50:57,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-05 12:50:57,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405201215] [2021-06-05 12:50:57,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 12:50:57,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:50:57,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 12:50:57,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 12:50:57,686 INFO L87 Difference]: Start difference. First operand 585 states and 1485 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:50:57,705 INFO L93 Difference]: Finished difference Result 820 states and 2120 transitions. [2021-06-05 12:50:57,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 12:50:57,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-05 12:50:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:50:57,710 INFO L225 Difference]: With dead ends: 820 [2021-06-05 12:50:57,710 INFO L226 Difference]: Without dead ends: 820 [2021-06-05 12:50:57,711 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 12:50:57,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-06-05 12:50:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 632. [2021-06-05 12:50:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 2.554675118858954) internal successors, (1612), 631 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1612 transitions. [2021-06-05 12:50:57,727 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1612 transitions. Word has length 42 [2021-06-05 12:50:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:50:57,728 INFO L482 AbstractCegarLoop]: Abstraction has 632 states and 1612 transitions. [2021-06-05 12:50:57,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:57,728 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1612 transitions. [2021-06-05 12:50:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 12:50:57,729 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:50:57,729 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:50:57,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 12:50:57,949 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:50:57,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:50:57,950 INFO L82 PathProgramCache]: Analyzing trace with hash 415797961, now seen corresponding path program 1 times [2021-06-05 12:50:57,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:50:57,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643151271] [2021-06-05 12:50:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:50:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:50:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 12:50:57,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:50:57,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643151271] [2021-06-05 12:50:57,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643151271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:50:57,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716040863] [2021-06-05 12:50:57,992 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 [2021-06-05 12:50:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:50:58,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 12:50:58,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:50:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 12:50:58,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716040863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:50:58,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:50:58,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 12:50:58,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121022160] [2021-06-05 12:50:58,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 12:50:58,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:50:58,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 12:50:58,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 12:50:58,151 INFO L87 Difference]: Start difference. First operand 632 states and 1612 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:58,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:50:58,216 INFO L93 Difference]: Finished difference Result 1162 states and 3002 transitions. [2021-06-05 12:50:58,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 12:50:58,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 12:50:58,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:50:58,220 INFO L225 Difference]: With dead ends: 1162 [2021-06-05 12:50:58,220 INFO L226 Difference]: Without dead ends: 1162 [2021-06-05 12:50:58,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 38.1ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 12:50:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-06-05 12:50:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 950. [2021-06-05 12:50:58,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 2.577449947312961) internal successors, (2446), 949 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 2446 transitions. [2021-06-05 12:50:58,244 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 2446 transitions. Word has length 48 [2021-06-05 12:50:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:50:58,245 INFO L482 AbstractCegarLoop]: Abstraction has 950 states and 2446 transitions. [2021-06-05 12:50:58,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 2446 transitions. [2021-06-05 12:50:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 12:50:58,247 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:50:58,247 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:50:58,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:50:58,471 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:50:58,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:50:58,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1237021723, now seen corresponding path program 2 times [2021-06-05 12:50:58,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:50:58,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346167796] [2021-06-05 12:50:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:50:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:50:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 12:50:58,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:50:58,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346167796] [2021-06-05 12:50:58,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346167796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:50:58,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156165432] [2021-06-05 12:50:58,533 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 [2021-06-05 12:50:58,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 12:50:58,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:50:58,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 12:50:58,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:50:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 12:50:58,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156165432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:50:58,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:50:58,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 12:50:58,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141397389] [2021-06-05 12:50:58,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 12:50:58,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:50:58,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 12:50:58,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 12:50:58,711 INFO L87 Difference]: Start difference. First operand 950 states and 2446 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:50:58,753 INFO L93 Difference]: Finished difference Result 1660 states and 4376 transitions. [2021-06-05 12:50:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 12:50:58,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-05 12:50:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:50:58,760 INFO L225 Difference]: With dead ends: 1660 [2021-06-05 12:50:58,760 INFO L226 Difference]: Without dead ends: 1660 [2021-06-05 12:50:58,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 12:50:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2021-06-05 12:50:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1376. [2021-06-05 12:50:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 2.621090909090909) internal successors, (3604), 1375 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 3604 transitions. [2021-06-05 12:50:58,789 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 3604 transitions. Word has length 54 [2021-06-05 12:50:58,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:50:58,790 INFO L482 AbstractCegarLoop]: Abstraction has 1376 states and 3604 transitions. [2021-06-05 12:50:58,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 3604 transitions. [2021-06-05 12:50:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 12:50:58,794 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:50:58,794 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:50:59,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:50:59,009 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:50:59,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:50:59,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1922403487, now seen corresponding path program 3 times [2021-06-05 12:50:59,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:50:59,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958418704] [2021-06-05 12:50:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:50:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:50:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 12:50:59,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:50:59,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958418704] [2021-06-05 12:50:59,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958418704] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:50:59,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974626894] [2021-06-05 12:50:59,062 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 [2021-06-05 12:50:59,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 12:50:59,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:50:59,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 12:50:59,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:50:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 12:50:59,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974626894] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:50:59,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:50:59,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 12:50:59,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537837173] [2021-06-05 12:50:59,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 12:50:59,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:50:59,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 12:50:59,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-05 12:50:59,287 INFO L87 Difference]: Start difference. First operand 1376 states and 3604 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:59,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:50:59,342 INFO L93 Difference]: Finished difference Result 2146 states and 5654 transitions. [2021-06-05 12:50:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 12:50:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-05 12:50:59,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:50:59,349 INFO L225 Difference]: With dead ends: 2146 [2021-06-05 12:50:59,349 INFO L226 Difference]: Without dead ends: 2146 [2021-06-05 12:50:59,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 12:50:59,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-06-05 12:50:59,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1838. [2021-06-05 12:50:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1837 states have (on average 2.6314643440391943) internal successors, (4834), 1837 states have internal predecessors, (4834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 4834 transitions. [2021-06-05 12:50:59,382 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 4834 transitions. Word has length 60 [2021-06-05 12:50:59,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:50:59,382 INFO L482 AbstractCegarLoop]: Abstraction has 1838 states and 4834 transitions. [2021-06-05 12:50:59,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 4834 transitions. [2021-06-05 12:50:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-06-05 12:50:59,385 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:50:59,385 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:50:59,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:50:59,603 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:50:59,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:50:59,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1376625277, now seen corresponding path program 4 times [2021-06-05 12:50:59,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:50:59,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717639437] [2021-06-05 12:50:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:50:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:50:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 12:50:59,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:50:59,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717639437] [2021-06-05 12:50:59,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717639437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:50:59,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912694603] [2021-06-05 12:50:59,685 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 [2021-06-05 12:50:59,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 12:50:59,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:50:59,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 12:50:59,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:50:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 12:50:59,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912694603] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:50:59,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:50:59,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 12:50:59,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865912787] [2021-06-05 12:50:59,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 12:50:59,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:50:59,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 12:50:59,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 12:50:59,831 INFO L87 Difference]: Start difference. First operand 1838 states and 4834 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:50:59,912 INFO L93 Difference]: Finished difference Result 2608 states and 6884 transitions. [2021-06-05 12:50:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 12:50:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-06-05 12:50:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:50:59,921 INFO L225 Difference]: With dead ends: 2608 [2021-06-05 12:50:59,921 INFO L226 Difference]: Without dead ends: 2608 [2021-06-05 12:50:59,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 71.6ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 12:50:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-06-05 12:50:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2300. [2021-06-05 12:50:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2299 states have (on average 2.6376685515441496) internal successors, (6064), 2299 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 6064 transitions. [2021-06-05 12:50:59,974 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 6064 transitions. Word has length 66 [2021-06-05 12:50:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:50:59,974 INFO L482 AbstractCegarLoop]: Abstraction has 2300 states and 6064 transitions. [2021-06-05 12:50:59,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:50:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 6064 transitions. [2021-06-05 12:50:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-06-05 12:50:59,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:50:59,978 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:00,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 12:51:00,193 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:00,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:00,193 INFO L82 PathProgramCache]: Analyzing trace with hash -562033511, now seen corresponding path program 5 times [2021-06-05 12:51:00,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:00,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678496907] [2021-06-05 12:51:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-05 12:51:00,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:00,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678496907] [2021-06-05 12:51:00,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678496907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:00,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729879048] [2021-06-05 12:51:00,293 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 [2021-06-05 12:51:00,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 12:51:00,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:51:00,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 12:51:00,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-06-05 12:51:00,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729879048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:00,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:00,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2021-06-05 12:51:00,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424961351] [2021-06-05 12:51:00,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 12:51:00,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:00,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 12:51:00,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 12:51:00,498 INFO L87 Difference]: Start difference. First operand 2300 states and 6064 transitions. Second operand has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:02,075 INFO L93 Difference]: Finished difference Result 4192 states and 11204 transitions. [2021-06-05 12:51:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-06-05 12:51:02,075 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-06-05 12:51:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:02,087 INFO L225 Difference]: With dead ends: 4192 [2021-06-05 12:51:02,088 INFO L226 Difference]: Without dead ends: 4192 [2021-06-05 12:51:02,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5698 ImplicationChecksByTransitivity, 1365.5ms TimeCoverageRelationStatistics Valid=3111, Invalid=10931, Unknown=0, NotChecked=0, Total=14042 [2021-06-05 12:51:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2021-06-05 12:51:02,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 3620. [2021-06-05 12:51:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 2.6637192594639405) internal successors, (9640), 3619 states have internal predecessors, (9640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 9640 transitions. [2021-06-05 12:51:02,152 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 9640 transitions. Word has length 72 [2021-06-05 12:51:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:02,152 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 9640 transitions. [2021-06-05 12:51:02,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 9640 transitions. [2021-06-05 12:51:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-06-05 12:51:02,158 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:02,158 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:02,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:51:02,375 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:02,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1969208625, now seen corresponding path program 6 times [2021-06-05 12:51:02,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:02,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264629486] [2021-06-05 12:51:02,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-05 12:51:02,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:02,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264629486] [2021-06-05 12:51:02,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264629486] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:02,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151315807] [2021-06-05 12:51:02,427 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 [2021-06-05 12:51:02,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 12:51:02,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:51:02,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 12:51:02,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-05 12:51:02,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151315807] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:02,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:02,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 12:51:02,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029595738] [2021-06-05 12:51:02,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 12:51:02,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:02,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 12:51:02,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 12:51:02,600 INFO L87 Difference]: Start difference. First operand 3620 states and 9640 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:02,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:02,689 INFO L93 Difference]: Finished difference Result 5050 states and 13550 transitions. [2021-06-05 12:51:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 12:51:02,690 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-06-05 12:51:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:02,705 INFO L225 Difference]: With dead ends: 5050 [2021-06-05 12:51:02,705 INFO L226 Difference]: Without dead ends: 5050 [2021-06-05 12:51:02,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 61.8ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 12:51:02,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2021-06-05 12:51:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 4478. [2021-06-05 12:51:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 2.677239222693768) internal successors, (11986), 4477 states have internal predecessors, (11986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11986 transitions. [2021-06-05 12:51:02,781 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11986 transitions. Word has length 84 [2021-06-05 12:51:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:02,781 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11986 transitions. [2021-06-05 12:51:02,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11986 transitions. [2021-06-05 12:51:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 12:51:02,788 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:02,788 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:03,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:51:03,005 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:03,005 INFO L82 PathProgramCache]: Analyzing trace with hash 301366189, now seen corresponding path program 7 times [2021-06-05 12:51:03,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:03,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59886122] [2021-06-05 12:51:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-05 12:51:03,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:03,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59886122] [2021-06-05 12:51:03,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59886122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:03,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364892179] [2021-06-05 12:51:03,117 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 [2021-06-05 12:51:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:03,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 12:51:03,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:51:03,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364892179] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 12:51:03,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 12:51:03,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 30 [2021-06-05 12:51:03,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36407649] [2021-06-05 12:51:03,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 12:51:03,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:03,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 12:51:03,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2021-06-05 12:51:03,511 INFO L87 Difference]: Start difference. First operand 4478 states and 11986 transitions. Second operand has 21 states, 20 states have (on average 4.5) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:04,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:04,035 INFO L93 Difference]: Finished difference Result 15668 states and 42041 transitions. [2021-06-05 12:51:04,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 12:51:04,035 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 12:51:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:04,049 INFO L225 Difference]: With dead ends: 15668 [2021-06-05 12:51:04,050 INFO L226 Difference]: Without dead ends: 9747 [2021-06-05 12:51:04,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 455.5ms TimeCoverageRelationStatistics Valid=608, Invalid=1942, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 12:51:04,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9747 states. [2021-06-05 12:51:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9747 to 6182. [2021-06-05 12:51:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 6181 states have (on average 2.6917974437793237) internal successors, (16638), 6181 states have internal predecessors, (16638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 16638 transitions. [2021-06-05 12:51:04,167 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 16638 transitions. Word has length 90 [2021-06-05 12:51:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:04,167 INFO L482 AbstractCegarLoop]: Abstraction has 6182 states and 16638 transitions. [2021-06-05 12:51:04,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 16638 transitions. [2021-06-05 12:51:04,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-06-05 12:51:04,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:04,177 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:04,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 12:51:04,393 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:04,393 INFO L82 PathProgramCache]: Analyzing trace with hash -511602725, now seen corresponding path program 8 times [2021-06-05 12:51:04,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:04,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862468395] [2021-06-05 12:51:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-06-05 12:51:04,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:04,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862468395] [2021-06-05 12:51:04,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862468395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:04,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110753915] [2021-06-05 12:51:04,451 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 [2021-06-05 12:51:04,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 12:51:04,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:51:04,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 12:51:04,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-06-05 12:51:04,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110753915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:04,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:04,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-05 12:51:04,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749514659] [2021-06-05 12:51:04,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 12:51:04,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:04,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 12:51:04,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 12:51:04,629 INFO L87 Difference]: Start difference. First operand 6182 states and 16638 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:04,724 INFO L93 Difference]: Finished difference Result 8056 states and 21746 transitions. [2021-06-05 12:51:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 12:51:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-06-05 12:51:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:04,736 INFO L225 Difference]: With dead ends: 8056 [2021-06-05 12:51:04,736 INFO L226 Difference]: Without dead ends: 8056 [2021-06-05 12:51:04,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-06-05 12:51:04,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2021-06-05 12:51:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 7656. [2021-06-05 12:51:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7656 states, 7655 states have (on average 2.6991508817766166) internal successors, (20662), 7655 states have internal predecessors, (20662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:04,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 20662 transitions. [2021-06-05 12:51:04,893 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 20662 transitions. Word has length 90 [2021-06-05 12:51:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:04,894 INFO L482 AbstractCegarLoop]: Abstraction has 7656 states and 20662 transitions. [2021-06-05 12:51:04,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 20662 transitions. [2021-06-05 12:51:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 12:51:04,911 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:04,911 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:05,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:51:05,125 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:05,125 INFO L82 PathProgramCache]: Analyzing trace with hash 517351127, now seen corresponding path program 9 times [2021-06-05 12:51:05,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:05,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123992322] [2021-06-05 12:51:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 98 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:51:05,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:05,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123992322] [2021-06-05 12:51:05,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123992322] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:05,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951734067] [2021-06-05 12:51:05,314 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 [2021-06-05 12:51:05,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 12:51:05,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:51:05,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 12:51:05,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 109 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 12:51:05,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951734067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:05,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:05,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2021-06-05 12:51:05,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332119472] [2021-06-05 12:51:05,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 12:51:05,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:05,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 12:51:05,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-06-05 12:51:05,520 INFO L87 Difference]: Start difference. First operand 7656 states and 20662 transitions. Second operand has 23 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:05,985 INFO L93 Difference]: Finished difference Result 20427 states and 54710 transitions. [2021-06-05 12:51:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 12:51:05,986 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-06-05 12:51:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:06,001 INFO L225 Difference]: With dead ends: 20427 [2021-06-05 12:51:06,001 INFO L226 Difference]: Without dead ends: 10763 [2021-06-05 12:51:06,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 308.1ms TimeCoverageRelationStatistics Valid=566, Invalid=1414, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 12:51:06,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10763 states. [2021-06-05 12:51:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10763 to 7124. [2021-06-05 12:51:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 2.6879123964621647) internal successors, (19146), 7123 states have internal predecessors, (19146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 19146 transitions. [2021-06-05 12:51:06,118 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 19146 transitions. Word has length 96 [2021-06-05 12:51:06,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:06,118 INFO L482 AbstractCegarLoop]: Abstraction has 7124 states and 19146 transitions. [2021-06-05 12:51:06,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 4.818181818181818) internal successors, (106), 23 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 19146 transitions. [2021-06-05 12:51:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 12:51:06,128 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:06,128 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:06,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:51:06,346 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:06,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:06,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2104548449, now seen corresponding path program 10 times [2021-06-05 12:51:06,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:06,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589672617] [2021-06-05 12:51:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-05 12:51:06,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:06,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589672617] [2021-06-05 12:51:06,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589672617] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:06,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688952715] [2021-06-05 12:51:06,498 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 [2021-06-05 12:51:06,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 12:51:06,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:51:06,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 12:51:06,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-05 12:51:06,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688952715] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:06,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:06,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-05 12:51:06,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198747660] [2021-06-05 12:51:06,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 12:51:06,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:06,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 12:51:06,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-06-05 12:51:06,670 INFO L87 Difference]: Start difference. First operand 7124 states and 19146 transitions. Second operand has 21 states, 20 states have (on average 5.1) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:07,122 INFO L93 Difference]: Finished difference Result 24237 states and 64802 transitions. [2021-06-05 12:51:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 12:51:07,123 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-06-05 12:51:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:07,137 INFO L225 Difference]: With dead ends: 24237 [2021-06-05 12:51:07,137 INFO L226 Difference]: Without dead ends: 10151 [2021-06-05 12:51:07,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 270.4ms TimeCoverageRelationStatistics Valid=464, Invalid=1176, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 12:51:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10151 states. [2021-06-05 12:51:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10151 to 6592. [2021-06-05 12:51:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6592 states, 6591 states have (on average 2.6748596571081777) internal successors, (17630), 6591 states have internal predecessors, (17630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 17630 transitions. [2021-06-05 12:51:07,254 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 17630 transitions. Word has length 96 [2021-06-05 12:51:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:07,254 INFO L482 AbstractCegarLoop]: Abstraction has 6592 states and 17630 transitions. [2021-06-05 12:51:07,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 17630 transitions. [2021-06-05 12:51:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 12:51:07,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:07,263 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:07,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-05 12:51:07,480 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:07,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:07,481 INFO L82 PathProgramCache]: Analyzing trace with hash 846817895, now seen corresponding path program 11 times [2021-06-05 12:51:07,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:07,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102015576] [2021-06-05 12:51:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 70 proven. 44 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-05 12:51:07,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:07,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102015576] [2021-06-05 12:51:07,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102015576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:07,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203062189] [2021-06-05 12:51:07,622 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 [2021-06-05 12:51:07,668 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 12:51:07,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:51:07,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 12:51:07,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 75 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-05 12:51:07,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203062189] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:07,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:07,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-05 12:51:07,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646215913] [2021-06-05 12:51:07,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 12:51:07,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:07,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 12:51:07,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-06-05 12:51:07,806 INFO L87 Difference]: Start difference. First operand 6592 states and 17630 transitions. Second operand has 19 states, 18 states have (on average 5.333333333333333) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:08,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:08,194 INFO L93 Difference]: Finished difference Result 28917 states and 77264 transitions. [2021-06-05 12:51:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 12:51:08,201 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.333333333333333) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-06-05 12:51:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:08,213 INFO L225 Difference]: With dead ends: 28917 [2021-06-05 12:51:08,214 INFO L226 Difference]: Without dead ends: 9539 [2021-06-05 12:51:08,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 242.9ms TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 12:51:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9539 states. [2021-06-05 12:51:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9539 to 6060. [2021-06-05 12:51:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6060 states, 6059 states have (on average 2.659514771414425) internal successors, (16114), 6059 states have internal predecessors, (16114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 16114 transitions. [2021-06-05 12:51:08,317 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 16114 transitions. Word has length 96 [2021-06-05 12:51:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:08,317 INFO L482 AbstractCegarLoop]: Abstraction has 6060 states and 16114 transitions. [2021-06-05 12:51:08,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 5.333333333333333) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 16114 transitions. [2021-06-05 12:51:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 12:51:08,325 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:08,325 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:08,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 12:51:08,539 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:08,539 INFO L82 PathProgramCache]: Analyzing trace with hash 318077743, now seen corresponding path program 12 times [2021-06-05 12:51:08,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:08,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522625963] [2021-06-05 12:51:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 65 proven. 32 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 12:51:08,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:08,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522625963] [2021-06-05 12:51:08,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522625963] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:08,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035927413] [2021-06-05 12:51:08,641 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 [2021-06-05 12:51:08,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 12:51:08,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:51:08,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 12:51:08,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 67 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 12:51:08,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035927413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:08,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:08,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 12:51:08,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103258680] [2021-06-05 12:51:08,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 12:51:08,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:08,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 12:51:08,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 12:51:08,825 INFO L87 Difference]: Start difference. First operand 6060 states and 16114 transitions. Second operand has 17 states, 16 states have (on average 5.625) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:09,353 INFO L93 Difference]: Finished difference Result 33602 states and 89731 transitions. [2021-06-05 12:51:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 12:51:09,353 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.625) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-06-05 12:51:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:09,394 INFO L225 Difference]: With dead ends: 33602 [2021-06-05 12:51:09,394 INFO L226 Difference]: Without dead ends: 31824 [2021-06-05 12:51:09,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 337.1ms TimeCoverageRelationStatistics Valid=565, Invalid=1327, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 12:51:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31824 states. [2021-06-05 12:51:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31824 to 9556. [2021-06-05 12:51:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9556 states, 9555 states have (on average 2.678283621140764) internal successors, (25591), 9555 states have internal predecessors, (25591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9556 states to 9556 states and 25591 transitions. [2021-06-05 12:51:09,642 INFO L78 Accepts]: Start accepts. Automaton has 9556 states and 25591 transitions. Word has length 96 [2021-06-05 12:51:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:09,642 INFO L482 AbstractCegarLoop]: Abstraction has 9556 states and 25591 transitions. [2021-06-05 12:51:09,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 5.625) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 9556 states and 25591 transitions. [2021-06-05 12:51:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 12:51:09,654 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:09,655 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:09,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 12:51:09,869 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:09,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:09,869 INFO L82 PathProgramCache]: Analyzing trace with hash 701211889, now seen corresponding path program 13 times [2021-06-05 12:51:09,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:09,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336448145] [2021-06-05 12:51:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 12:51:09,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:09,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336448145] [2021-06-05 12:51:09,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336448145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:09,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136597564] [2021-06-05 12:51:09,917 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 [2021-06-05 12:51:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:09,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 12:51:09,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 11 proven. 67 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 12:51:10,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136597564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:10,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:10,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 12:51:10,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822041572] [2021-06-05 12:51:10,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 12:51:10,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:10,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 12:51:10,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 12:51:10,106 INFO L87 Difference]: Start difference. First operand 9556 states and 25591 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:10,248 INFO L93 Difference]: Finished difference Result 17120 states and 45885 transitions. [2021-06-05 12:51:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 12:51:10,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-06-05 12:51:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:10,259 INFO L225 Difference]: With dead ends: 17120 [2021-06-05 12:51:10,259 INFO L226 Difference]: Without dead ends: 8927 [2021-06-05 12:51:10,259 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-06-05 12:51:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8927 states. [2021-06-05 12:51:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8927 to 5528. [2021-06-05 12:51:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5527 states have (on average 2.6412158494662568) internal successors, (14598), 5527 states have internal predecessors, (14598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 14598 transitions. [2021-06-05 12:51:10,352 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 14598 transitions. Word has length 96 [2021-06-05 12:51:10,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:10,352 INFO L482 AbstractCegarLoop]: Abstraction has 5528 states and 14598 transitions. [2021-06-05 12:51:10,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 14598 transitions. [2021-06-05 12:51:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 12:51:10,360 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:10,360 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:10,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 12:51:10,576 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:10,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1577309687, now seen corresponding path program 14 times [2021-06-05 12:51:10,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:10,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037495177] [2021-06-05 12:51:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 22 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-06-05 12:51:10,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:10,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037495177] [2021-06-05 12:51:10,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037495177] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:10,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379197176] [2021-06-05 12:51:10,642 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 [2021-06-05 12:51:10,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 12:51:10,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:51:10,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 12:51:10,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 65 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-06-05 12:51:10,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379197176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:10,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:10,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-05 12:51:10,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414131295] [2021-06-05 12:51:10,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 12:51:10,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 12:51:10,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 12:51:10,795 INFO L87 Difference]: Start difference. First operand 5528 states and 14598 transitions. Second operand has 15 states, 14 states have (on average 7.714285714285714) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:10,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:10,971 INFO L93 Difference]: Finished difference Result 13071 states and 34969 transitions. [2021-06-05 12:51:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 12:51:10,972 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.714285714285714) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-06-05 12:51:10,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:10,987 INFO L225 Difference]: With dead ends: 13071 [2021-06-05 12:51:10,987 INFO L226 Difference]: Without dead ends: 12656 [2021-06-05 12:51:10,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-06-05 12:51:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12656 states. [2021-06-05 12:51:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12656 to 8025. [2021-06-05 12:51:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8025 states, 8024 states have (on average 2.6952891326021935) internal successors, (21627), 8024 states have internal predecessors, (21627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8025 states to 8025 states and 21627 transitions. [2021-06-05 12:51:11,139 INFO L78 Accepts]: Start accepts. Automaton has 8025 states and 21627 transitions. Word has length 96 [2021-06-05 12:51:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:11,139 INFO L482 AbstractCegarLoop]: Abstraction has 8025 states and 21627 transitions. [2021-06-05 12:51:11,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 7.714285714285714) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 8025 states and 21627 transitions. [2021-06-05 12:51:11,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-06-05 12:51:11,148 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 12:51:11,148 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 12:51:11,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 12:51:11,361 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 12:51:11,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 12:51:11,361 INFO L82 PathProgramCache]: Analyzing trace with hash 698754679, now seen corresponding path program 15 times [2021-06-05 12:51:11,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 12:51:11,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096215686] [2021-06-05 12:51:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 12:51:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 12:51:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 45 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 12:51:11,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 12:51:11,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096215686] [2021-06-05 12:51:11,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096215686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:11,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214066110] [2021-06-05 12:51:11,450 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 [2021-06-05 12:51:11,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 12:51:11,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 12:51:11,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 12:51:11,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 12:51:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 67 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-05 12:51:11,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214066110] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 12:51:11,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 12:51:11,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-05 12:51:11,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457861917] [2021-06-05 12:51:11,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 12:51:11,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 12:51:11,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 12:51:11,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 12:51:11,620 INFO L87 Difference]: Start difference. First operand 8025 states and 21627 transitions. Second operand has 17 states, 16 states have (on average 6.75) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 12:51:11,928 INFO L93 Difference]: Finished difference Result 25029 states and 67412 transitions. [2021-06-05 12:51:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 12:51:11,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.75) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-06-05 12:51:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 12:51:11,929 INFO L225 Difference]: With dead ends: 25029 [2021-06-05 12:51:11,929 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 12:51:11,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 196.4ms TimeCoverageRelationStatistics Valid=322, Invalid=868, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 12:51:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 12:51:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 12:51:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 12:51:11,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2021-06-05 12:51:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 12:51:11,930 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 12:51:11,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 6.75) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 12:51:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 12:51:11,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 12:51:12,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 12:51:12,132 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 12:51:12,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:51:12 BasicIcfg [2021-06-05 12:51:12,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 12:51:12,134 INFO L168 Benchmark]: Toolchain (without parser) took 15768.79 ms. Allocated memory was 325.1 MB in the beginning and 574.6 MB in the end (delta: 249.6 MB). Free memory was 287.6 MB in the beginning and 253.3 MB in the end (delta: 34.3 MB). Peak memory consumption was 284.0 MB. Max. memory is 16.0 GB. [2021-06-05 12:51:12,134 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 325.1 MB. Free memory is still 305.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 12:51:12,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.45 ms. Allocated memory is still 325.1 MB. Free memory was 287.5 MB in the beginning and 308.0 MB in the end (delta: -20.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-05 12:51:12,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.13 ms. Allocated memory is still 325.1 MB. Free memory was 308.0 MB in the beginning and 306.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 12:51:12,134 INFO L168 Benchmark]: Boogie Preprocessor took 12.25 ms. Allocated memory is still 325.1 MB. Free memory was 306.9 MB in the beginning and 305.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 12:51:12,134 INFO L168 Benchmark]: RCFGBuilder took 299.60 ms. Allocated memory is still 325.1 MB. Free memory was 305.9 MB in the beginning and 287.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 12:51:12,134 INFO L168 Benchmark]: TraceAbstraction took 15271.49 ms. Allocated memory was 325.1 MB in the beginning and 574.6 MB in the end (delta: 249.6 MB). Free memory was 287.0 MB in the beginning and 253.3 MB in the end (delta: 33.7 MB). Peak memory consumption was 283.3 MB. Max. memory is 16.0 GB. [2021-06-05 12:51:12,134 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 325.1 MB. Free memory is still 305.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 161.45 ms. Allocated memory is still 325.1 MB. Free memory was 287.5 MB in the beginning and 308.0 MB in the end (delta: -20.5 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.13 ms. Allocated memory is still 325.1 MB. Free memory was 308.0 MB in the beginning and 306.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.25 ms. Allocated memory is still 325.1 MB. Free memory was 306.9 MB in the beginning and 305.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 299.60 ms. Allocated memory is still 325.1 MB. Free memory was 305.9 MB in the beginning and 287.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 15271.49 ms. Allocated memory was 325.1 MB in the beginning and 574.6 MB in the end (delta: 249.6 MB). Free memory was 287.0 MB in the beginning and 253.3 MB in the end (delta: 33.7 MB). Peak memory consumption was 283.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 79 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15160.7ms, OverallIterations: 18, TraceHistogramMax: 5, EmptinessCheckTime: 137.7ms, AutomataDifference: 5301.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 49.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2812 SDtfs, 7885 SDslu, 14701 SDs, 0 SdLazy, 2846 SolverSat, 518 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1222.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1837 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 478 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7732 ImplicationChecksByTransitivity, 3730.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9556occurred in iteration=15, InterpolantAutomatonStates: 375, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1463.0ms AutomataMinimizationTime, 18 MinimizatonAttempts, 47580 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 157.0ms SsaConstructionTime, 523.1ms SatisfiabilityAnalysisTime, 3490.2ms InterpolantComputationTime, 2628 NumberOfCodeBlocks, 2612 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 2594 ConstructedInterpolants, 0 QuantifiedInterpolants, 5732 SizeOfPredicates, 138 NumberOfNonLiveVariables, 2246 ConjunctsInSsa, 170 ConjunctsInUnsatCore, 34 InterpolantComputations, 4 PerfectInterpolantSequences, 1826/2622 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...