/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 22:36:39,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 22:36:39,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 22:36:39,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 22:36:39,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 22:36:39,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 22:36:39,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 22:36:39,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-05-21 22:36:40,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 22:36:40,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 22:36:40,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 22:36:40,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 22:36:40,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 22:36:40,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 22:36:40,004 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 22:36:40,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 22:36:40,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 22:36:40,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 22:36:40,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 22:36:40,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 22:36:40,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 22:36:40,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 22:36:40,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 22:36:40,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 22:36:40,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 22:36:40,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 22:36:40,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 22:36:40,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 22:36:40,006 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 22:36:40,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 22:36:40,006 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 22:36:40,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 22:36:40,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 22:36:40,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 22:36:40,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 22:36:40,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 22:36:40,270 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 22:36:40,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i [2021-05-21 22:36:40,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/297b91119/c146abad1285409f9909244ae7a89e14/FLAGc62ef4710 [2021-05-21 22:36:40,718 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 22:36:40,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i [2021-05-21 22:36:40,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/297b91119/c146abad1285409f9909244ae7a89e14/FLAGc62ef4710 [2021-05-21 22:36:41,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/297b91119/c146abad1285409f9909244ae7a89e14 [2021-05-21 22:36:41,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 22:36:41,068 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 22:36:41,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 22:36:41,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 22:36:41,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 22:36:41,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b77cbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41, skipping insertion in model container [2021-05-21 22:36:41,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 22:36:41,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 22:36:41,348 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i[30336,30349] [2021-05-21 22:36:41,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 22:36:41,363 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 22:36:41,398 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/47_ticket_lock_hc_backoff_vs.i[30336,30349] [2021-05-21 22:36:41,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 22:36:41,440 INFO L208 MainTranslator]: Completed translation [2021-05-21 22:36:41,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41 WrapperNode [2021-05-21 22:36:41,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 22:36:41,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 22:36:41,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 22:36:41,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 22:36:41,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 22:36:41,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 22:36:41,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 22:36:41,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 22:36:41,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (1/1) ... [2021-05-21 22:36:41,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 22:36:41,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 22:36:41,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 22:36:41,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 22:36:41,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (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 [2021-05-21 22:36:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-21 22:36:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-05-21 22:36:41,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-05-21 22:36:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 22:36:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 22:36:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 22:36:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 22:36:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 22:36:41,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 22:36:41,539 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 22:36:41,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 22:36:41,908 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-05-21 22:36:41,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 10:36:41 BoogieIcfgContainer [2021-05-21 22:36:41,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 22:36:41,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 22:36:41,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 22:36:41,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 22:36:41,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 10:36:41" (1/3) ... [2021-05-21 22:36:41,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 10:36:41, skipping insertion in model container [2021-05-21 22:36:41,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 10:36:41" (2/3) ... [2021-05-21 22:36:41,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429b3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 10:36:41, skipping insertion in model container [2021-05-21 22:36:41,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 10:36:41" (3/3) ... [2021-05-21 22:36:41,914 INFO L111 eAbstractionObserver]: Analyzing ICFG 47_ticket_lock_hc_backoff_vs.i [2021-05-21 22:36:41,918 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 22:36:41,918 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 22:36:41,918 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-05-21 22:36:41,919 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 22:36:41,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,934 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,935 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,935 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,935 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,935 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,936 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,936 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 22:36:41,944 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 22:36:41,958 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 22:36:41,970 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 22:36:41,970 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 22:36:41,970 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 22:36:41,970 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 22:36:41,970 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 22:36:41,970 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 22:36:41,970 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 22:36:41,970 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 22:36:41,977 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 91 transitions, 187 flow [2021-05-21 22:36:42,003 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1042 states, 1034 states have (on average 2.3123791102514506) internal successors, (2391), 1041 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 22:36:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 1042 states, 1034 states have (on average 2.3123791102514506) internal successors, (2391), 1041 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 22:36:42,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 22:36:42,017 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 22:36:42,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 22:36:42,018 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 22:36:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 22:36:42,024 INFO L82 PathProgramCache]: Analyzing trace with hash -784179379, now seen corresponding path program 1 times [2021-05-21 22:36:42,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 22:36:42,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246221560] [2021-05-21 22:36:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 22:36:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 22:36:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 22:36:42,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 22:36:42,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246221560] [2021-05-21 22:36:42,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246221560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 22:36:42,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 22:36:42,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 22:36:42,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708221528] [2021-05-21 22:36:42,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-21 22:36:42,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 22:36:42,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-21 22:36:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-21 22:36:42,167 INFO L87 Difference]: Start difference. First operand has 1042 states, 1034 states have (on average 2.3123791102514506) internal successors, (2391), 1041 states have internal predecessors, (2391), 0 states have call successors, (0), 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 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 22:36:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 22:36:42,197 INFO L93 Difference]: Finished difference Result 670 states and 1351 transitions. [2021-05-21 22:36:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-21 22:36:42,198 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-05-21 22:36:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 22:36:42,217 INFO L225 Difference]: With dead ends: 670 [2021-05-21 22:36:42,217 INFO L226 Difference]: Without dead ends: 670 [2021-05-21 22:36:42,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-21 22:36:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-05-21 22:36:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2021-05-21 22:36:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 667 states have (on average 2.025487256371814) internal successors, (1351), 669 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 22:36:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1351 transitions. [2021-05-21 22:36:42,275 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1351 transitions. Word has length 25 [2021-05-21 22:36:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 22:36:42,276 INFO L482 AbstractCegarLoop]: Abstraction has 670 states and 1351 transitions. [2021-05-21 22:36:42,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 22:36:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1351 transitions. [2021-05-21 22:36:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-21 22:36:42,277 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 22:36:42,277 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 22:36:42,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 22:36:42,277 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 22:36:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 22:36:42,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2062752289, now seen corresponding path program 1 times [2021-05-21 22:36:42,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 22:36:42,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755931141] [2021-05-21 22:36:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 22:36:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 22:36:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 22:36:42,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 22:36:42,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755931141] [2021-05-21 22:36:42,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755931141] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 22:36:42,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 22:36:42,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 22:36:42,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486788532] [2021-05-21 22:36:42,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 22:36:42,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 22:36:42,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 22:36:42,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 22:36:42,378 INFO L87 Difference]: Start difference. First operand 670 states and 1351 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 22:36:42,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 22:36:42,399 INFO L93 Difference]: Finished difference Result 688 states and 1389 transitions. [2021-05-21 22:36:42,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 22:36:42,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-05-21 22:36:42,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 22:36:42,401 INFO L225 Difference]: With dead ends: 688 [2021-05-21 22:36:42,401 INFO L226 Difference]: Without dead ends: 565 [2021-05-21 22:36:42,402 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 22:36:42,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-05-21 22:36:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 537. [2021-05-21 22:36:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 537 states have (on average 2.0446927374301676) internal successors, (1098), 536 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 22:36:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1098 transitions. [2021-05-21 22:36:42,415 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1098 transitions. Word has length 30 [2021-05-21 22:36:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 22:36:42,415 INFO L482 AbstractCegarLoop]: Abstraction has 537 states and 1098 transitions. [2021-05-21 22:36:42,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 22:36:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1098 transitions. [2021-05-21 22:36:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-21 22:36:42,417 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 22:36:42,417 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 22:36:42,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 22:36:42,418 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 22:36:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 22:36:42,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1042794163, now seen corresponding path program 1 times [2021-05-21 22:36:42,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 22:36:42,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34655087] [2021-05-21 22:36:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 22:36:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 22:36:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 22:36:42,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 22:36:42,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34655087] [2021-05-21 22:36:42,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34655087] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-21 22:36:42,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417242847] [2021-05-21 22:36:42,539 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 [2021-05-21 22:36:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 22:36:42,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-21 22:36:42,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-21 22:36:42,804 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-21 22:36:43,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-21 22:36:43,025 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.EqualityInformation.getEqinfo(EqualityInformation.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.XnfDer.derSimple(XnfDer.java:308) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.XnfDer.tryToEliminate_EqInfoBased(XnfDer.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.XnfDer.tryToEliminate(XnfDer.java:101) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:100) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-05-21 22:36:43,028 INFO L168 Benchmark]: Toolchain (without parser) took 1959.68 ms. Allocated memory is still 325.1 MB. Free memory was 288.2 MB in the beginning and 125.2 MB in the end (delta: 163.0 MB). Peak memory consumption was 162.6 MB. Max. memory is 16.0 GB. [2021-05-21 22:36:43,028 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 325.1 MB. Free memory was 306.1 MB in the beginning and 306.0 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 22:36:43,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.61 ms. Allocated memory is still 325.1 MB. Free memory was 288.0 MB in the beginning and 288.5 MB in the end (delta: -533.2 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-05-21 22:36:43,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.71 ms. Allocated memory is still 325.1 MB. Free memory was 288.5 MB in the beginning and 286.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 22:36:43,029 INFO L168 Benchmark]: Boogie Preprocessor took 15.61 ms. Allocated memory is still 325.1 MB. Free memory was 286.4 MB in the beginning and 285.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 22:36:43,029 INFO L168 Benchmark]: RCFGBuilder took 426.35 ms. Allocated memory is still 325.1 MB. Free memory was 285.4 MB in the beginning and 244.5 MB in the end (delta: 40.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. [2021-05-21 22:36:43,029 INFO L168 Benchmark]: TraceAbstraction took 1116.72 ms. Allocated memory is still 325.1 MB. Free memory was 243.4 MB in the beginning and 125.2 MB in the end (delta: 118.2 MB). Peak memory consumption was 117.4 MB. Max. memory is 16.0 GB. [2021-05-21 22:36:43,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 325.1 MB. Free memory was 306.1 MB in the beginning and 306.0 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 370.61 ms. Allocated memory is still 325.1 MB. Free memory was 288.0 MB in the beginning and 288.5 MB in the end (delta: -533.2 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.71 ms. Allocated memory is still 325.1 MB. Free memory was 288.5 MB in the beginning and 286.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.61 ms. Allocated memory is still 325.1 MB. Free memory was 286.4 MB in the beginning and 285.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 426.35 ms. Allocated memory is still 325.1 MB. Free memory was 285.4 MB in the beginning and 244.5 MB in the end (delta: 40.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1116.72 ms. Allocated memory is still 325.1 MB. Free memory was 243.4 MB in the beginning and 125.2 MB in the end (delta: 118.2 MB). Peak memory consumption was 117.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.EqualityInformation.getEqinfo(EqualityInformation.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...