/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 20:29:30,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 20:29:30,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 20:29:30,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 20:29:30,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 20:29:30,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 20:29:30,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 20:29:30,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 20:29:30,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 20:29:30,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 20:29:30,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 20:29:30,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-03-10 20:29:30,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 20:29:30,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 20:29:30,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 20:29:30,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 20:29:30,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 20:29:30,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 20:29:30,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 20:29:30,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 20:29:30,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 20:29:30,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 20:29:30,479 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 20:29:30,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 20:29:30,479 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 20:29:30,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 20:29:30,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 20:29:30,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 20:29:30,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 20:29:30,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 20:29:30,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 20:29:30,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 20:29:30,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 20:29:30,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 20:29:30,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 20:29:30,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 20:29:30,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 20:29:30,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 20:29:30,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 20:29:30,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 20:29:30,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 20:29:30,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 20:29:30,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 20:29:30,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 20:29:30,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 20:29:30,483 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 20:29:30,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 20:29:30,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 20:29:30,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 20:29:30,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 20:29:30,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 20:29:30,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 20:29:30,850 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 20:29:30,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2021-03-10 20:29:30,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a52787004/86c5f057cb0645a69e9b48365994cd75/FLAG42a39a968 [2021-03-10 20:29:31,295 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 20:29:31,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/mainThreadTerminates.c [2021-03-10 20:29:31,296 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-10 20:29:31,296 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-10 20:29:31,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a52787004/86c5f057cb0645a69e9b48365994cd75/FLAG42a39a968 [2021-03-10 20:29:31,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a52787004/86c5f057cb0645a69e9b48365994cd75 [2021-03-10 20:29:31,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 20:29:31,696 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 20:29:31,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 20:29:31,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 20:29:31,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 20:29:31,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f574cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31, skipping insertion in model container [2021-03-10 20:29:31,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 20:29:31,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 20:29:31,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:29:31,842 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 20:29:31,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:29:31,901 INFO L208 MainTranslator]: Completed translation [2021-03-10 20:29:31,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31 WrapperNode [2021-03-10 20:29:31,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 20:29:31,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 20:29:31,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 20:29:31,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 20:29:31,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 20:29:31,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 20:29:31,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 20:29:31,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 20:29:31,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... [2021-03-10 20:29:31,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 20:29:31,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 20:29:31,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 20:29:31,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 20:29:31,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 20:29:32,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 20:29:32,028 INFO L130 BoogieDeclarations]: Found specification of procedure worker_thread [2021-03-10 20:29:32,029 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_thread [2021-03-10 20:29:32,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 20:29:32,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 20:29:32,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 20:29:32,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 20:29:32,031 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 20:29:32,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 20:29:32,231 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-10 20:29:32,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:29:32 BoogieIcfgContainer [2021-03-10 20:29:32,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 20:29:32,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 20:29:32,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 20:29:32,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 20:29:32,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 08:29:31" (1/3) ... [2021-03-10 20:29:32,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2d0adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:29:32, skipping insertion in model container [2021-03-10 20:29:32,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:29:31" (2/3) ... [2021-03-10 20:29:32,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2d0adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:29:32, skipping insertion in model container [2021-03-10 20:29:32,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:29:32" (3/3) ... [2021-03-10 20:29:32,267 INFO L111 eAbstractionObserver]: Analyzing ICFG mainThreadTerminates.c [2021-03-10 20:29:32,272 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 20:29:32,273 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 20:29:32,276 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 20:29:32,276 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 20:29:32,306 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,307 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,307 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,307 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,307 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,307 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,307 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,307 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,308 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,308 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,308 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,308 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,309 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,309 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,309 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,309 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,309 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,310 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,310 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,310 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,310 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,310 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,310 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,311 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,312 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,313 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,313 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,313 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,313 WARN L313 ript$VariableManager]: TermVariabe |worker_threadThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,313 WARN L313 ript$VariableManager]: TermVariabe worker_threadThread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:29:32,324 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 20:29:32,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-10 20:29:32,354 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 20:29:32,354 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 20:29:32,354 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 20:29:32,354 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 20:29:32,355 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 20:29:32,355 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 20:29:32,355 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 20:29:32,355 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 20:29:32,363 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 55 flow [2021-03-10 20:29:32,374 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 68 states, 66 states have (on average 1.878787878787879) internal successors, (124), 67 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.878787878787879) internal successors, (124), 67 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-10 20:29:32,382 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:32,382 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:32,383 INFO L428 AbstractCegarLoop]: === Iteration 1 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-10 20:29:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash -905728310, now seen corresponding path program 1 times [2021-03-10 20:29:32,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:32,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002479012] [2021-03-10 20:29:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:32,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002479012] [2021-03-10 20:29:32,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:29:32,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 20:29:32,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430187959] [2021-03-10 20:29:32,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-10 20:29:32,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:29:32,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-10 20:29:32,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-10 20:29:32,528 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.878787878787879) internal successors, (124), 67 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:29:32,539 INFO L93 Difference]: Finished difference Result 56 states and 96 transitions. [2021-03-10 20:29:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-10 20:29:32,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-03-10 20:29:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:29:32,546 INFO L225 Difference]: With dead ends: 56 [2021-03-10 20:29:32,547 INFO L226 Difference]: Without dead ends: 56 [2021-03-10 20:29:32,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-10 20:29:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-03-10 20:29:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-03-10 20:29:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 96 transitions. [2021-03-10 20:29:32,577 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 96 transitions. Word has length 12 [2021-03-10 20:29:32,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:29:32,577 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 96 transitions. [2021-03-10 20:29:32,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 96 transitions. [2021-03-10 20:29:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-10 20:29:32,578 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:32,578 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:32,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 20:29:32,579 INFO L428 AbstractCegarLoop]: === Iteration 2 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-10 20:29:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:32,580 INFO L82 PathProgramCache]: Analyzing trace with hash -905728279, now seen corresponding path program 1 times [2021-03-10 20:29:32,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:32,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34570599] [2021-03-10 20:29:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:32,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34570599] [2021-03-10 20:29:32,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:29:32,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 20:29:32,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400971352] [2021-03-10 20:29:32,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 20:29:32,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:29:32,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 20:29:32,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:29:32,635 INFO L87 Difference]: Start difference. First operand 56 states and 96 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:29:32,650 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2021-03-10 20:29:32,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 20:29:32,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-03-10 20:29:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:29:32,651 INFO L225 Difference]: With dead ends: 74 [2021-03-10 20:29:32,652 INFO L226 Difference]: Without dead ends: 74 [2021-03-10 20:29:32,652 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:29:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-03-10 20:29:32,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2021-03-10 20:29:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.7540983606557377) internal successors, (107), 61 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 107 transitions. [2021-03-10 20:29:32,662 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 107 transitions. Word has length 12 [2021-03-10 20:29:32,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:29:32,662 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 107 transitions. [2021-03-10 20:29:32,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 107 transitions. [2021-03-10 20:29:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 20:29:32,663 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:32,663 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:32,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 20:29:32,664 INFO L428 AbstractCegarLoop]: === Iteration 3 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-10 20:29:32,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:32,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1287582195, now seen corresponding path program 1 times [2021-03-10 20:29:32,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:32,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497098371] [2021-03-10 20:29:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:32,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497098371] [2021-03-10 20:29:32,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057614669] [2021-03-10 20:29:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 20:29:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:32,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-10 20:29:32,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 20:29:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:32,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 20:29:32,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 20:29:32,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855081304] [2021-03-10 20:29:32,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 20:29:32,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:29:32,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 20:29:32,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 20:29:32,862 INFO L87 Difference]: Start difference. First operand 62 states and 107 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:29:32,913 INFO L93 Difference]: Finished difference Result 98 states and 173 transitions. [2021-03-10 20:29:32,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 20:29:32,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 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 16 [2021-03-10 20:29:32,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:29:32,914 INFO L225 Difference]: With dead ends: 98 [2021-03-10 20:29:32,915 INFO L226 Difference]: Without dead ends: 98 [2021-03-10 20:29:32,915 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:29:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-03-10 20:29:32,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2021-03-10 20:29:32,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.776470588235294) internal successors, (151), 85 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 151 transitions. [2021-03-10 20:29:32,926 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 151 transitions. Word has length 16 [2021-03-10 20:29:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:29:32,926 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 151 transitions. [2021-03-10 20:29:32,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 151 transitions. [2021-03-10 20:29:32,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-03-10 20:29:32,928 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:32,928 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:33,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-03-10 20:29:33,146 INFO L428 AbstractCegarLoop]: === Iteration 4 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-10 20:29:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:33,147 INFO L82 PathProgramCache]: Analyzing trace with hash -223200463, now seen corresponding path program 2 times [2021-03-10 20:29:33,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:33,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149148662] [2021-03-10 20:29:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:33,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149148662] [2021-03-10 20:29:33,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988113261] [2021-03-10 20:29:33,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 20:29:33,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 20:29:33,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 20:29:33,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-10 20:29:33,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 20:29:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:33,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 20:29:33,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-03-10 20:29:33,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883080521] [2021-03-10 20:29:33,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-10 20:29:33,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:29:33,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-10 20:29:33,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-10 20:29:33,307 INFO L87 Difference]: Start difference. First operand 86 states and 151 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:29:33,400 INFO L93 Difference]: Finished difference Result 122 states and 217 transitions. [2021-03-10 20:29:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 20:29:33,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 20 [2021-03-10 20:29:33,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:29:33,401 INFO L225 Difference]: With dead ends: 122 [2021-03-10 20:29:33,401 INFO L226 Difference]: Without dead ends: 122 [2021-03-10 20:29:33,402 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 73.4ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-03-10 20:29:33,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-03-10 20:29:33,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2021-03-10 20:29:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.7889908256880733) internal successors, (195), 109 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 195 transitions. [2021-03-10 20:29:33,413 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 195 transitions. Word has length 20 [2021-03-10 20:29:33,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:29:33,413 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 195 transitions. [2021-03-10 20:29:33,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 195 transitions. [2021-03-10 20:29:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-03-10 20:29:33,414 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:33,415 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:33,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 20:29:33,633 INFO L428 AbstractCegarLoop]: === Iteration 5 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-10 20:29:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1916783019, now seen corresponding path program 3 times [2021-03-10 20:29:33,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:33,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812746358] [2021-03-10 20:29:33,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:29:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:33,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812746358] [2021-03-10 20:29:33,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194225707] [2021-03-10 20:29:33,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 20:29:33,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-10 20:29:33,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 20:29:33,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2021-03-10 20:29:33,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 20:29:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:29:33,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 20:29:33,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-03-10 20:29:33,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544479292] [2021-03-10 20:29:33,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-10 20:29:33,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:29:33,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-10 20:29:33,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-10 20:29:33,892 INFO L87 Difference]: Start difference. First operand 110 states and 195 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:29:34,018 INFO L93 Difference]: Finished difference Result 134 states and 239 transitions. [2021-03-10 20:29:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 20:29:34,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 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 24 [2021-03-10 20:29:34,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:29:34,020 INFO L225 Difference]: With dead ends: 134 [2021-03-10 20:29:34,020 INFO L226 Difference]: Without dead ends: 134 [2021-03-10 20:29:34,020 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-03-10 20:29:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-03-10 20:29:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-03-10 20:29:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.7969924812030076) internal successors, (239), 133 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 239 transitions. [2021-03-10 20:29:34,029 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 239 transitions. Word has length 24 [2021-03-10 20:29:34,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:29:34,029 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 239 transitions. [2021-03-10 20:29:34,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:29:34,030 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 239 transitions. [2021-03-10 20:29:34,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-03-10 20:29:34,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:29:34,031 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:29:34,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 20:29:34,247 INFO L428 AbstractCegarLoop]: === Iteration 6 === [worker_threadErr0ASSERT_VIOLATIONASSERT, worker_threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-10 20:29:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:29:34,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1387004039, now seen corresponding path program 4 times [2021-03-10 20:29:34,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:29:34,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28182518] [2021-03-10 20:29:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:29:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-10 20:29:34,259 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-10 20:29:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-10 20:29:34,268 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-10 20:29:34,281 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-10 20:29:34,282 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-10 20:29:34,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 20:29:34,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 08:29:34 BasicIcfg [2021-03-10 20:29:34,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 20:29:34,305 INFO L168 Benchmark]: Toolchain (without parser) took 2612.03 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 236.5 MB in the beginning and 357.3 MB in the end (delta: -120.8 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-10 20:29:34,306 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:29:34,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.54 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 235.8 MB in the beginning and 369.8 MB in the end (delta: -134.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-10 20:29:34,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.36 ms. Allocated memory is still 385.9 MB. Free memory was 369.8 MB in the beginning and 368.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:29:34,306 INFO L168 Benchmark]: Boogie Preprocessor took 25.22 ms. Allocated memory is still 385.9 MB. Free memory was 368.8 MB in the beginning and 367.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 20:29:34,306 INFO L168 Benchmark]: RCFGBuilder took 287.51 ms. Allocated memory is still 385.9 MB. Free memory was 367.4 MB in the beginning and 356.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-10 20:29:34,306 INFO L168 Benchmark]: TraceAbstraction took 2055.88 ms. Allocated memory is still 385.9 MB. Free memory was 355.4 MB in the beginning and 357.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 689.0 kB. Max. memory is 16.0 GB. [2021-03-10 20:29:34,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 208.54 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 235.8 MB in the beginning and 369.8 MB in the end (delta: -134.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.36 ms. Allocated memory is still 385.9 MB. Free memory was 369.8 MB in the beginning and 368.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.22 ms. Allocated memory is still 385.9 MB. Free memory was 368.8 MB in the beginning and 367.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 287.51 ms. Allocated memory is still 385.9 MB. Free memory was 367.4 MB in the beginning and 356.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2055.88 ms. Allocated memory is still 385.9 MB. Free memory was 355.4 MB in the beginning and 357.3 MB in the end (delta: -1.9 MB). Peak memory consumption was 689.0 kB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: assertion can be violated assertion can be violated We found a FailurePath: [L26] 0 pthread_t thread; [L27] FCALL, FORK 0 pthread_create(&thread, NULL, worker_thread, NULL) VAL [arg={0:0}] [L18] 1 int x = 0; VAL [arg={0:0}, arg={0:0}, x=0] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=0] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=1] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=1] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=2] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=2] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=3] [L19] COND TRUE 1 x < 4 VAL [arg={0:0}, arg={0:0}, x=3] [L20] 1 x++ VAL [arg={0:0}, arg={0:0}, x=4] [L19] COND FALSE 1 !(x < 4) VAL [arg={0:0}, arg={0:0}, x=4] [L22] 1 CodeAnnotStmt[Assertion] VAL [arg={0:0}, arg={0:0}, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1930.4ms, OverallIterations: 6, TraceHistogramMax: 4, EmptinessCheckTime: 11.1ms, AutomataDifference: 329.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 129 SDtfs, 170 SDslu, 363 SDs, 0 SdLazy, 104 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 245.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.6ms SsaConstructionTime, 82.4ms SatisfiabilityAnalysisTime, 515.6ms InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 246 SizeOfPredicates, 12 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...