/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 17:02:23,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:02:23,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:02:23,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:02:23,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 17:02:23,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 17:02:23,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 17:02:23,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 17:02:23,651 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:02:23,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:02:23,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:02:23,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:02:23,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:02:23,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:02:23,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:02:23,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:02:23,653 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:02:23,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:02:23,654 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:02:23,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:02:23,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:02:23,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:02:23,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:02:23,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:02:23,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:02:23,654 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:02:23,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:02:23,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:02:23,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:02:23,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:02:23,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:02:23,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:02:23,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:02:23,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:02:23,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:02:23,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:02:23,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:02:23,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:02:23,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:02:23,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:02:23,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:02:23,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:02:23,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:02:23,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:02:23,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:02:23,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 17:02:23,858 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 17:02:23,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2022-03-01 17:02:23,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2664fa79c/fc6de4bb328b4a748a48a7ec3a35d580/FLAG21164e3ca [2022-03-01 17:02:24,247 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 17:02:24,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2022-03-01 17:02:24,247 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-01 17:02:24,247 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-01 17:02:24,247 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2022-03-01 17:02:24,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2664fa79c/fc6de4bb328b4a748a48a7ec3a35d580/FLAG21164e3ca [2022-03-01 17:02:24,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2664fa79c/fc6de4bb328b4a748a48a7ec3a35d580 [2022-03-01 17:02:24,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:02:24,279 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 17:02:24,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 17:02:24,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 17:02:24,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 17:02:24,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de5594c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24, skipping insertion in model container [2022-03-01 17:02:24,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 17:02:24,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 17:02:24,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 17:02:24,443 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 17:02:24,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 17:02:24,458 INFO L208 MainTranslator]: Completed translation [2022-03-01 17:02:24,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24 WrapperNode [2022-03-01 17:02:24,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 17:02:24,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:02:24,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:02:24,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:02:24,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,482 INFO L137 Inliner]: procedures = 9, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2022-03-01 17:02:24,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:02:24,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:02:24,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:02:24,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:02:24,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:02:24,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:02:24,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:02:24,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:02:24,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (1/1) ... [2022-03-01 17:02:24,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:02:24,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:02:24,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 17:02:24,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 17:02:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 17:02:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:02:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:02:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 17:02:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2022-03-01 17:02:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2022-03-01 17:02:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2022-03-01 17:02:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2022-03-01 17:02:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 17:02:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 17:02:24,581 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:02:24,628 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:02:24,629 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:02:24,769 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:02:24,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:02:24,774 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-01 17:02:24,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:02:24 BoogieIcfgContainer [2022-03-01 17:02:24,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:02:24,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:02:24,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:02:24,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:02:24,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 05:02:24" (1/3) ... [2022-03-01 17:02:24,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1685ad94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:02:24, skipping insertion in model container [2022-03-01 17:02:24,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 05:02:24" (2/3) ... [2022-03-01 17:02:24,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1685ad94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:02:24, skipping insertion in model container [2022-03-01 17:02:24,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:02:24" (3/3) ... [2022-03-01 17:02:24,799 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2022-03-01 17:02:24,802 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:02:24,802 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:02:24,802 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:02:24,803 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:02:24,840 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,840 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,840 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,840 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,840 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,841 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,841 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,841 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,842 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,842 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,842 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,842 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,843 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,843 WARN L322 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,843 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,843 WARN L322 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,843 WARN L322 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,843 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,843 WARN L322 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,844 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,844 WARN L322 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,844 WARN L322 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,844 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,844 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,845 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,845 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,845 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,845 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,845 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,846 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,846 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,846 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,846 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,847 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,847 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,847 WARN L322 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,847 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,847 WARN L322 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,847 WARN L322 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,848 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,848 WARN L322 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,848 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,848 WARN L322 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,848 WARN L322 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,851 WARN L322 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,851 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,851 WARN L322 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,851 WARN L322 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,851 WARN L322 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,853 WARN L322 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,853 WARN L322 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,853 WARN L322 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,854 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,854 WARN L322 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 17:02:24,857 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 17:02:24,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:02:24,890 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 17:02:24,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 17:02:24,914 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 64 transitions, 144 flow [2022-03-01 17:02:24,986 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 509 states, 508 states have (on average 2.732283464566929) internal successors, (1388), 508 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 509 states, 508 states have (on average 2.732283464566929) internal successors, (1388), 508 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-01 17:02:25,011 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:02:25,012 INFO L514 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] [2022-03-01 17:02:25,013 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:02:25,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:02:25,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1750981028, now seen corresponding path program 1 times [2022-03-01 17:02:25,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:02:25,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692091689] [2022-03-01 17:02:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:25,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:02:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:02:25,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:02:25,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692091689] [2022-03-01 17:02:25,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692091689] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:02:25,209 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:02:25,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 17:02:25,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708344850] [2022-03-01 17:02:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:02:25,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 17:02:25,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:02:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 17:02:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 17:02:25,243 INFO L87 Difference]: Start difference. First operand has 509 states, 508 states have (on average 2.732283464566929) internal successors, (1388), 508 states have internal predecessors, (1388), 0 states have call successors, (0), 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 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:02:25,284 INFO L93 Difference]: Finished difference Result 509 states and 1299 transitions. [2022-03-01 17:02:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 17:02:25,286 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-01 17:02:25,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:02:25,304 INFO L225 Difference]: With dead ends: 509 [2022-03-01 17:02:25,304 INFO L226 Difference]: Without dead ends: 509 [2022-03-01 17:02:25,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 17:02:25,319 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:02:25,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:02:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-03-01 17:02:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2022-03-01 17:02:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 2.5570866141732282) internal successors, (1299), 508 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 1299 transitions. [2022-03-01 17:02:25,383 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 1299 transitions. Word has length 39 [2022-03-01 17:02:25,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:02:25,384 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 1299 transitions. [2022-03-01 17:02:25,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 1299 transitions. [2022-03-01 17:02:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-01 17:02:25,385 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:02:25,386 INFO L514 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] [2022-03-01 17:02:25,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:02:25,386 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:02:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:02:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash -824623202, now seen corresponding path program 1 times [2022-03-01 17:02:25,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:02:25,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092325918] [2022-03-01 17:02:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:25,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:02:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:02:25,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:02:25,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092325918] [2022-03-01 17:02:25,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092325918] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:02:25,450 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:02:25,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:02:25,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300011455] [2022-03-01 17:02:25,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:02:25,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:02:25,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:02:25,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:02:25,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:02:25,452 INFO L87 Difference]: Start difference. First operand 509 states and 1299 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:02:25,484 INFO L93 Difference]: Finished difference Result 724 states and 1879 transitions. [2022-03-01 17:02:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:02:25,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-01 17:02:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:02:25,489 INFO L225 Difference]: With dead ends: 724 [2022-03-01 17:02:25,489 INFO L226 Difference]: Without dead ends: 724 [2022-03-01 17:02:25,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:02:25,493 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 20 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:02:25,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 102 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:02:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-03-01 17:02:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 552. [2022-03-01 17:02:25,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 2.5680580762250456) internal successors, (1415), 551 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1415 transitions. [2022-03-01 17:02:25,521 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1415 transitions. Word has length 39 [2022-03-01 17:02:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:02:25,521 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 1415 transitions. [2022-03-01 17:02:25,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1415 transitions. [2022-03-01 17:02:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-01 17:02:25,524 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:02:25,524 INFO L514 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] [2022-03-01 17:02:25,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 17:02:25,525 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:02:25,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:02:25,525 INFO L85 PathProgramCache]: Analyzing trace with hash 643343514, now seen corresponding path program 1 times [2022-03-01 17:02:25,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:02:25,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609290876] [2022-03-01 17:02:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:25,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:02:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:02:25,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:02:25,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609290876] [2022-03-01 17:02:25,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609290876] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:02:25,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:02:25,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 17:02:25,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423451347] [2022-03-01 17:02:25,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:02:25,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:02:25,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:02:25,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:02:25,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:02:25,607 INFO L87 Difference]: Start difference. First operand 552 states and 1415 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:02:25,632 INFO L93 Difference]: Finished difference Result 802 states and 2080 transitions. [2022-03-01 17:02:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:02:25,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-03-01 17:02:25,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:02:25,638 INFO L225 Difference]: With dead ends: 802 [2022-03-01 17:02:25,639 INFO L226 Difference]: Without dead ends: 802 [2022-03-01 17:02:25,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:02:25,644 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:02:25,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 105 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:02:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-03-01 17:02:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 602. [2022-03-01 17:02:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 2.5757071547420964) internal successors, (1548), 601 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1548 transitions. [2022-03-01 17:02:25,660 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1548 transitions. Word has length 45 [2022-03-01 17:02:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:02:25,660 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1548 transitions. [2022-03-01 17:02:25,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1548 transitions. [2022-03-01 17:02:25,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-01 17:02:25,662 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:02:25,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:02:25,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 17:02:25,662 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:02:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:02:25,663 INFO L85 PathProgramCache]: Analyzing trace with hash -27155710, now seen corresponding path program 1 times [2022-03-01 17:02:25,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:02:25,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758523991] [2022-03-01 17:02:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:25,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:02:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:02:25,710 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:02:25,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758523991] [2022-03-01 17:02:25,711 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758523991] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:02:25,711 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430950618] [2022-03-01 17:02:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:25,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:25,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:02:25,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 17:02:25,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 17:02:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:25,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-01 17:02:25,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:02:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:02:25,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:02:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 17:02:26,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430950618] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:02:26,017 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:02:26,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-01 17:02:26,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451799047] [2022-03-01 17:02:26,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:02:26,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:02:26,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:02:26,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:02:26,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:02:26,022 INFO L87 Difference]: Start difference. First operand 602 states and 1548 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:26,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:02:26,117 INFO L93 Difference]: Finished difference Result 1166 states and 3072 transitions. [2022-03-01 17:02:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:02:26,118 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 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 51 [2022-03-01 17:02:26,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:02:26,122 INFO L225 Difference]: With dead ends: 1166 [2022-03-01 17:02:26,122 INFO L226 Difference]: Without dead ends: 1166 [2022-03-01 17:02:26,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:02:26,125 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 278 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:02:26,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 320 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:02:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-03-01 17:02:26,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2022-03-01 17:02:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 2.6369098712446353) internal successors, (3072), 1165 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 3072 transitions. [2022-03-01 17:02:26,147 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 3072 transitions. Word has length 51 [2022-03-01 17:02:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:02:26,147 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 3072 transitions. [2022-03-01 17:02:26,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 3072 transitions. [2022-03-01 17:02:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-01 17:02:26,150 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:02:26,150 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:02:26,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-01 17:02:26,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:26,366 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:02:26,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:02:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash 512494586, now seen corresponding path program 2 times [2022-03-01 17:02:26,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:02:26,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116301746] [2022-03-01 17:02:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:02:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-01 17:02:26,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:02:26,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116301746] [2022-03-01 17:02:26,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116301746] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:02:26,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541517641] [2022-03-01 17:02:26,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 17:02:26,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:26,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:02:26,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 17:02:26,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 17:02:26,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 17:02:26,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:02:26,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-01 17:02:26,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:02:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-01 17:02:26,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:02:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-01 17:02:26,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541517641] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:02:26,746 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:02:26,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-01 17:02:26,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115272207] [2022-03-01 17:02:26,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:02:26,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 17:02:26,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:02:26,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 17:02:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-01 17:02:26,747 INFO L87 Difference]: Start difference. First operand 1166 states and 3072 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:26,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:02:26,810 INFO L93 Difference]: Finished difference Result 2342 states and 6252 transitions. [2022-03-01 17:02:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 17:02:26,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-03-01 17:02:26,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:02:26,819 INFO L225 Difference]: With dead ends: 2342 [2022-03-01 17:02:26,819 INFO L226 Difference]: Without dead ends: 2342 [2022-03-01 17:02:26,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-01 17:02:26,820 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 287 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:02:26,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 319 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:02:26,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2022-03-01 17:02:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2342. [2022-03-01 17:02:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2341 states have (on average 2.670653566851773) internal successors, (6252), 2341 states have internal predecessors, (6252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 6252 transitions. [2022-03-01 17:02:26,865 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 6252 transitions. Word has length 63 [2022-03-01 17:02:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:02:26,865 INFO L470 AbstractCegarLoop]: Abstraction has 2342 states and 6252 transitions. [2022-03-01 17:02:26,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 6252 transitions. [2022-03-01 17:02:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-01 17:02:26,869 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:02:26,869 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:02:26,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 17:02:27,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:27,084 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:02:27,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:02:27,084 INFO L85 PathProgramCache]: Analyzing trace with hash 629255106, now seen corresponding path program 3 times [2022-03-01 17:02:27,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:02:27,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315714298] [2022-03-01 17:02:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:02:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-01 17:02:27,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:02:27,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315714298] [2022-03-01 17:02:27,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315714298] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:02:27,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183391071] [2022-03-01 17:02:27,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 17:02:27,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:27,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:02:27,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 17:02:27,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 17:02:27,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 17:02:27,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:02:27,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-01 17:02:27,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:02:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-01 17:02:27,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:02:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-01 17:02:27,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183391071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:02:27,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:02:27,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-01 17:02:27,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208468175] [2022-03-01 17:02:27,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:02:27,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-01 17:02:27,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:02:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-01 17:02:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-03-01 17:02:27,473 INFO L87 Difference]: Start difference. First operand 2342 states and 6252 transitions. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:02:29,694 INFO L93 Difference]: Finished difference Result 4948 states and 13342 transitions. [2022-03-01 17:02:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-03-01 17:02:29,695 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-03-01 17:02:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:02:29,711 INFO L225 Difference]: With dead ends: 4948 [2022-03-01 17:02:29,712 INFO L226 Difference]: Without dead ends: 4948 [2022-03-01 17:02:29,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11221 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5484, Invalid=20598, Unknown=0, NotChecked=0, Total=26082 [2022-03-01 17:02:29,717 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 1828 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:02:29,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1828 Valid, 1013 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:02:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2022-03-01 17:02:29,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 4376. [2022-03-01 17:02:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 2.6921142857142857) internal successors, (11778), 4375 states have internal predecessors, (11778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 11778 transitions. [2022-03-01 17:02:29,820 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 11778 transitions. Word has length 75 [2022-03-01 17:02:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:02:29,820 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 11778 transitions. [2022-03-01 17:02:29,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 11778 transitions. [2022-03-01 17:02:29,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-01 17:02:29,828 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:02:29,828 INFO L514 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, 1, 1, 1] [2022-03-01 17:02:29,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 17:02:30,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:30,045 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:02:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:02:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash 628677766, now seen corresponding path program 4 times [2022-03-01 17:02:30,046 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:02:30,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868456293] [2022-03-01 17:02:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:30,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:02:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-03-01 17:02:30,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:02:30,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868456293] [2022-03-01 17:02:30,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868456293] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:02:30,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236393922] [2022-03-01 17:02:30,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 17:02:30,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:30,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:02:30,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 17:02:30,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 17:02:30,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 17:02:30,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:02:30,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-01 17:02:30,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:02:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-03-01 17:02:30,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:02:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-03-01 17:02:30,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236393922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:02:30,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:02:30,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2022-03-01 17:02:30,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169023396] [2022-03-01 17:02:30,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:02:30,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 17:02:30,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:02:30,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 17:02:30,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-03-01 17:02:30,491 INFO L87 Difference]: Start difference. First operand 4376 states and 11778 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:30,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:02:30,593 INFO L93 Difference]: Finished difference Result 5234 states and 14124 transitions. [2022-03-01 17:02:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-01 17:02:30,593 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 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 93 [2022-03-01 17:02:30,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:02:30,613 INFO L225 Difference]: With dead ends: 5234 [2022-03-01 17:02:30,613 INFO L226 Difference]: Without dead ends: 5234 [2022-03-01 17:02:30,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-03-01 17:02:30,614 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 502 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:02:30,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 400 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:02:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2022-03-01 17:02:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 5234. [2022-03-01 17:02:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 2.699025415631569) internal successors, (14124), 5233 states have internal predecessors, (14124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 14124 transitions. [2022-03-01 17:02:30,720 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 14124 transitions. Word has length 93 [2022-03-01 17:02:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:02:30,720 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 14124 transitions. [2022-03-01 17:02:30,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 14124 transitions. [2022-03-01 17:02:30,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 17:02:30,729 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:02:30,729 INFO L514 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, 1, 1, 1] [2022-03-01 17:02:30,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 17:02:30,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:30,943 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:02:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:02:30,944 INFO L85 PathProgramCache]: Analyzing trace with hash 671689858, now seen corresponding path program 5 times [2022-03-01 17:02:30,944 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:02:30,944 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959950915] [2022-03-01 17:02:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:30,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:02:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 117 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:02:31,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:02:31,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959950915] [2022-03-01 17:02:31,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959950915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:02:31,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441784790] [2022-03-01 17:02:31,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 17:02:31,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:31,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:02:31,168 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 17:02:31,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 17:02:31,218 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-01 17:02:31,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:02:31,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-01 17:02:31,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:02:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:02:31,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-01 17:02:31,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441784790] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:02:31,390 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-01 17:02:31,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [22] total 24 [2022-03-01 17:02:31,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454964326] [2022-03-01 17:02:31,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:02:31,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-01 17:02:31,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:02:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-01 17:02:31,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-03-01 17:02:31,391 INFO L87 Difference]: Start difference. First operand 5234 states and 14124 transitions. Second operand has 23 states, 22 states have (on average 4.5) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:31,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:02:31,913 INFO L93 Difference]: Finished difference Result 19427 states and 52787 transitions. [2022-03-01 17:02:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-01 17:02:31,914 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.5) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-01 17:02:31,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:02:31,952 INFO L225 Difference]: With dead ends: 19427 [2022-03-01 17:02:31,953 INFO L226 Difference]: Without dead ends: 11846 [2022-03-01 17:02:31,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=720, Invalid=1632, Unknown=0, NotChecked=0, Total=2352 [2022-03-01 17:02:31,954 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 682 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 17:02:31,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 2200 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 17:02:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11846 states. [2022-03-01 17:02:32,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11846 to 7602. [2022-03-01 17:02:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7602 states, 7601 states have (on average 2.7043810024996713) internal successors, (20556), 7601 states have internal predecessors, (20556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7602 states to 7602 states and 20556 transitions. [2022-03-01 17:02:32,212 INFO L78 Accepts]: Start accepts. Automaton has 7602 states and 20556 transitions. Word has length 99 [2022-03-01 17:02:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:02:32,212 INFO L470 AbstractCegarLoop]: Abstraction has 7602 states and 20556 transitions. [2022-03-01 17:02:32,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.5) internal successors, (99), 23 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 7602 states and 20556 transitions. [2022-03-01 17:02:32,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-01 17:02:32,227 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:02:32,227 INFO L514 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, 1, 1, 1] [2022-03-01 17:02:32,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 17:02:32,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:32,448 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 17:02:32,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:02:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1966296506, now seen corresponding path program 6 times [2022-03-01 17:02:32,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:02:32,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608014653] [2022-03-01 17:02:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:02:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:02:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:02:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 114 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:02:32,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:02:32,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608014653] [2022-03-01 17:02:32,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608014653] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 17:02:32,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027612103] [2022-03-01 17:02:32,654 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 17:02:32,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:32,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:02:32,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 17:02:32,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 17:02:32,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-01 17:02:32,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 17:02:32,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-01 17:02:32,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 17:02:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:02:32,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 17:02:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:02:33,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027612103] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 17:02:33,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 17:02:33,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 38 [2022-03-01 17:02:33,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923374073] [2022-03-01 17:02:33,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 17:02:33,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-01 17:02:33,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:02:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-01 17:02:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2022-03-01 17:02:33,209 INFO L87 Difference]: Start difference. First operand 7602 states and 20556 transitions. Second operand has 39 states, 38 states have (on average 5.315789473684211) internal successors, (202), 39 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:02:34,249 INFO L93 Difference]: Finished difference Result 37224 states and 100954 transitions. [2022-03-01 17:02:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-01 17:02:34,249 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.315789473684211) internal successors, (202), 39 states have internal predecessors, (202), 0 states have call successors, (0), 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 99 [2022-03-01 17:02:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:02:34,250 INFO L225 Difference]: With dead ends: 37224 [2022-03-01 17:02:34,250 INFO L226 Difference]: Without dead ends: 0 [2022-03-01 17:02:34,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2094, Invalid=5216, Unknown=0, NotChecked=0, Total=7310 [2022-03-01 17:02:34,251 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1196 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 17:02:34,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 3041 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 17:02:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-01 17:02:34,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-01 17:02:34,252 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) [2022-03-01 17:02:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-01 17:02:34,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2022-03-01 17:02:34,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:02:34,252 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-01 17:02:34,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.315789473684211) internal successors, (202), 39 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:02:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-01 17:02:34,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-01 17:02:34,254 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-01 17:02:34,255 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 17:02:34,255 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 17:02:34,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 17:02:34,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 17:02:34,485 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2022-03-01 17:02:34,486 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 17:02:34,486 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 17:02:34,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 05:02:34 BasicIcfg [2022-03-01 17:02:34,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 17:02:34,488 INFO L158 Benchmark]: Toolchain (without parser) took 10208.75ms. Allocated memory was 189.8MB in the beginning and 429.9MB in the end (delta: 240.1MB). Free memory was 132.0MB in the beginning and 338.0MB in the end (delta: -206.0MB). Peak memory consumption was 64.3MB. Max. memory is 8.0GB. [2022-03-01 17:02:34,488 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:02:34,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.64ms. Allocated memory was 189.8MB in the beginning and 246.4MB in the end (delta: 56.6MB). Free memory was 131.7MB in the beginning and 216.6MB in the end (delta: -84.8MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. [2022-03-01 17:02:34,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.61ms. Allocated memory is still 246.4MB. Free memory was 216.6MB in the beginning and 215.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 17:02:34,489 INFO L158 Benchmark]: Boogie Preprocessor took 29.44ms. Allocated memory is still 246.4MB. Free memory was 215.5MB in the beginning and 214.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 17:02:34,490 INFO L158 Benchmark]: RCFGBuilder took 262.50ms. Allocated memory is still 246.4MB. Free memory was 213.9MB in the beginning and 202.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-01 17:02:34,490 INFO L158 Benchmark]: TraceAbstraction took 9711.51ms. Allocated memory was 246.4MB in the beginning and 429.9MB in the end (delta: 183.5MB). Free memory was 201.9MB in the beginning and 338.0MB in the end (delta: -136.1MB). Peak memory consumption was 78.3MB. Max. memory is 8.0GB. [2022-03-01 17:02:34,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 165.64ms. Allocated memory was 189.8MB in the beginning and 246.4MB in the end (delta: 56.6MB). Free memory was 131.7MB in the beginning and 216.6MB in the end (delta: -84.8MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.61ms. Allocated memory is still 246.4MB. Free memory was 216.6MB in the beginning and 215.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.44ms. Allocated memory is still 246.4MB. Free memory was 215.5MB in the beginning and 214.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 262.50ms. Allocated memory is still 246.4MB. Free memory was 213.9MB in the beginning and 202.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 9711.51ms. Allocated memory was 246.4MB in the beginning and 429.9MB in the end (delta: 183.5MB). Free memory was 201.9MB in the beginning and 338.0MB in the end (delta: -136.1MB). Peak memory consumption was 78.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, 83 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4800 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4800 mSDsluCounter, 7547 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6732 mSDsCounter, 405 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1997 IncrementalHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 405 mSolverCounterUnsat, 1199 mSDtfsCounter, 1997 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1197 GetRequests, 859 SyntacticMatches, 2 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13366 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7602occurred in iteration=8, InterpolantAutomatonStates: 278, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 5188 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1083 NumberOfCodeBlocks, 1081 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1444 ConstructedInterpolants, 0 QuantifiedInterpolants, 3124 SizeOfPredicates, 56 NumberOfNonLiveVariables, 994 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 938/1164 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! [2022-03-01 17:02:34,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...