/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:20:38,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:20:38,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:20:38,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:20:38,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:20:38,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:20:38,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:20:38,211 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 [2021-06-12 17:20:38,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:20:38,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:20:38,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:20:38,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:20:38,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:20:38,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:20:38,237 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:20:38,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:20:38,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:20:38,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:20:38,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:20:38,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:20:38,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:20:38,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:20:38,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:20:38,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:20:38,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:20:38,239 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:20:38,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:20:38,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:20:38,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:20:38,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:20:38,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:20:38,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:20:38,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:20:38,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:20:38,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:20:38,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:20:38,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:20:38,240 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:20:38,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:20:38,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:20:38,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:20:38,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:20:38,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:20:38,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:20:38,510 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:20:38,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-06-12 17:20:38,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/911de9b5c/4749104a0bca49e29a0605f220144c9b/FLAG6dbadaca4 [2021-06-12 17:20:38,920 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:20:38,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-06-12 17:20:38,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/911de9b5c/4749104a0bca49e29a0605f220144c9b/FLAG6dbadaca4 [2021-06-12 17:20:38,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/911de9b5c/4749104a0bca49e29a0605f220144c9b [2021-06-12 17:20:38,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:20:38,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:20:38,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:20:38,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:20:38,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:20:38,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:20:38" (1/1) ... [2021-06-12 17:20:38,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f1315d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:38, skipping insertion in model container [2021-06-12 17:20:38,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:20:38" (1/1) ... [2021-06-12 17:20:38,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:20:38,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:20:39,094 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-wmm/safe023_tso.opt.i[949,962] [2021-06-12 17:20:39,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:20:39,196 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:20:39,203 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-wmm/safe023_tso.opt.i[949,962] [2021-06-12 17:20:39,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:20:39,263 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:20:39,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39 WrapperNode [2021-06-12 17:20:39,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:20:39,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:20:39,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:20:39,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:20:39,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... [2021-06-12 17:20:39,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... [2021-06-12 17:20:39,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:20:39,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:20:39,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:20:39,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:20:39,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... [2021-06-12 17:20:39,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... [2021-06-12 17:20:39,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... [2021-06-12 17:20:39,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... [2021-06-12 17:20:39,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... [2021-06-12 17:20:39,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... [2021-06-12 17:20:39,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... [2021-06-12 17:20:39,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:20:39,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:20:39,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:20:39,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:20:39,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:20:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:20:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:20:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:20:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:20:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:20:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:20:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:20:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:20:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:20:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:20:39,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:20:39,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:20:39,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:20:39,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:20:39,355 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:20:39,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:20:39,605 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:20:39,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:20:39 BoogieIcfgContainer [2021-06-12 17:20:39,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:20:39,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:20:39,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:20:39,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:20:39,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:20:38" (1/3) ... [2021-06-12 17:20:39,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793d113d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:20:39, skipping insertion in model container [2021-06-12 17:20:39,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:20:39" (2/3) ... [2021-06-12 17:20:39,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793d113d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:20:39, skipping insertion in model container [2021-06-12 17:20:39,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:20:39" (3/3) ... [2021-06-12 17:20:39,611 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2021-06-12 17:20:39,616 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:20:39,616 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:20:39,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:20:39,617 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:20:39,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,643 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,643 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,644 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,650 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,650 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,651 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,651 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,651 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,651 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,651 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,651 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,652 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,652 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,654 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,655 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,661 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,664 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,664 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:20:39,668 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:20:39,682 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:20:39,702 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:20:39,702 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:20:39,702 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:20:39,703 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:20:39,703 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:20:39,703 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:20:39,703 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:20:39,703 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:20:39,713 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-12 17:20:40,133 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:40,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-12 17:20:40,192 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:40,192 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:40,203 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:40,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-06-12 17:20:40,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:40,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534681391] [2021-06-12 17:20:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:40,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:40,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534681391] [2021-06-12 17:20:40,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534681391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:40,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:40,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:20:40,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846327680] [2021-06-12 17:20:40,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:20:40,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:40,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:20:40,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:20:40,574 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:40,954 INFO L93 Difference]: Finished difference Result 19048 states and 65652 transitions. [2021-06-12 17:20:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:20:40,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2021-06-12 17:20:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:41,052 INFO L225 Difference]: With dead ends: 19048 [2021-06-12 17:20:41,053 INFO L226 Difference]: Without dead ends: 5758 [2021-06-12 17:20:41,054 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 182.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:20:41,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2021-06-12 17:20:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 4708. [2021-06-12 17:20:41,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 4707 states have (on average 3.2345442957297643) internal successors, (15225), 4707 states have internal predecessors, (15225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 15225 transitions. [2021-06-12 17:20:41,243 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 15225 transitions. Word has length 49 [2021-06-12 17:20:41,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:41,244 INFO L482 AbstractCegarLoop]: Abstraction has 4708 states and 15225 transitions. [2021-06-12 17:20:41,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 15225 transitions. [2021-06-12 17:20:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-12 17:20:41,251 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:41,251 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:41,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:20:41,252 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:41,252 INFO L82 PathProgramCache]: Analyzing trace with hash -303430371, now seen corresponding path program 1 times [2021-06-12 17:20:41,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:41,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222480912] [2021-06-12 17:20:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:41,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:41,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222480912] [2021-06-12 17:20:41,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222480912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:41,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:41,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:20:41,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430704861] [2021-06-12 17:20:41,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:20:41,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:41,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:20:41,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:20:41,378 INFO L87 Difference]: Start difference. First operand 4708 states and 15225 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:41,554 INFO L93 Difference]: Finished difference Result 7841 states and 25345 transitions. [2021-06-12 17:20:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:20:41,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-12 17:20:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:41,578 INFO L225 Difference]: With dead ends: 7841 [2021-06-12 17:20:41,579 INFO L226 Difference]: Without dead ends: 6201 [2021-06-12 17:20:41,579 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:20:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6201 states. [2021-06-12 17:20:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6201 to 4588. [2021-06-12 17:20:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4587 states have (on average 3.223239590146065) internal successors, (14785), 4587 states have internal predecessors, (14785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 14785 transitions. [2021-06-12 17:20:41,687 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 14785 transitions. Word has length 51 [2021-06-12 17:20:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:41,688 INFO L482 AbstractCegarLoop]: Abstraction has 4588 states and 14785 transitions. [2021-06-12 17:20:41,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 14785 transitions. [2021-06-12 17:20:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-12 17:20:41,695 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:41,695 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:41,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:20:41,695 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:41,696 INFO L82 PathProgramCache]: Analyzing trace with hash 682898486, now seen corresponding path program 1 times [2021-06-12 17:20:41,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:41,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8903112] [2021-06-12 17:20:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:41,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:41,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8903112] [2021-06-12 17:20:41,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8903112] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:41,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:41,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:20:41,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707321073] [2021-06-12 17:20:41,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:20:41,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:41,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:20:41,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:20:41,802 INFO L87 Difference]: Start difference. First operand 4588 states and 14785 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:41,957 INFO L93 Difference]: Finished difference Result 6318 states and 20134 transitions. [2021-06-12 17:20:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:20:41,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-06-12 17:20:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:41,975 INFO L225 Difference]: With dead ends: 6318 [2021-06-12 17:20:41,975 INFO L226 Difference]: Without dead ends: 4418 [2021-06-12 17:20:41,976 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:20:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2021-06-12 17:20:42,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 3462. [2021-06-12 17:20:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3461 states have (on average 3.2008090147356256) internal successors, (11078), 3461 states have internal predecessors, (11078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 11078 transitions. [2021-06-12 17:20:42,056 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 11078 transitions. Word has length 53 [2021-06-12 17:20:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:42,057 INFO L482 AbstractCegarLoop]: Abstraction has 3462 states and 11078 transitions. [2021-06-12 17:20:42,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 11078 transitions. [2021-06-12 17:20:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 17:20:42,062 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:42,062 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:42,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:20:42,063 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:42,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1593129158, now seen corresponding path program 1 times [2021-06-12 17:20:42,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:42,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414005540] [2021-06-12 17:20:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:42,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:42,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414005540] [2021-06-12 17:20:42,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414005540] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:42,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:42,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:20:42,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146981414] [2021-06-12 17:20:42,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:20:42,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:42,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:20:42,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:20:42,175 INFO L87 Difference]: Start difference. First operand 3462 states and 11078 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:42,351 INFO L93 Difference]: Finished difference Result 6177 states and 19420 transitions. [2021-06-12 17:20:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:20:42,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-12 17:20:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:42,391 INFO L225 Difference]: With dead ends: 6177 [2021-06-12 17:20:42,391 INFO L226 Difference]: Without dead ends: 3932 [2021-06-12 17:20:42,391 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:20:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2021-06-12 17:20:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 2928. [2021-06-12 17:20:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 3.169115134950461) internal successors, (9276), 2927 states have internal predecessors, (9276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 9276 transitions. [2021-06-12 17:20:42,442 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 9276 transitions. Word has length 54 [2021-06-12 17:20:42,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:42,443 INFO L482 AbstractCegarLoop]: Abstraction has 2928 states and 9276 transitions. [2021-06-12 17:20:42,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 9276 transitions. [2021-06-12 17:20:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-12 17:20:42,447 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:42,448 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:42,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:20:42,448 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:42,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:42,448 INFO L82 PathProgramCache]: Analyzing trace with hash 690569953, now seen corresponding path program 1 times [2021-06-12 17:20:42,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:42,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414105749] [2021-06-12 17:20:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:42,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:42,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414105749] [2021-06-12 17:20:42,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414105749] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:42,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:42,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:20:42,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835518426] [2021-06-12 17:20:42,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:20:42,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:42,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:20:42,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:20:42,548 INFO L87 Difference]: Start difference. First operand 2928 states and 9276 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:42,662 INFO L93 Difference]: Finished difference Result 3336 states and 10430 transitions. [2021-06-12 17:20:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:20:42,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2021-06-12 17:20:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:42,665 INFO L225 Difference]: With dead ends: 3336 [2021-06-12 17:20:42,665 INFO L226 Difference]: Without dead ends: 1576 [2021-06-12 17:20:42,665 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-12 17:20:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-06-12 17:20:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1576. [2021-06-12 17:20:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 2.9638095238095237) internal successors, (4668), 1575 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 4668 transitions. [2021-06-12 17:20:42,688 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 4668 transitions. Word has length 56 [2021-06-12 17:20:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:42,688 INFO L482 AbstractCegarLoop]: Abstraction has 1576 states and 4668 transitions. [2021-06-12 17:20:42,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 4668 transitions. [2021-06-12 17:20:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:20:42,690 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:42,690 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:42,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:20:42,690 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:42,691 INFO L82 PathProgramCache]: Analyzing trace with hash -708582085, now seen corresponding path program 1 times [2021-06-12 17:20:42,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:42,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403083665] [2021-06-12 17:20:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:42,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:42,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403083665] [2021-06-12 17:20:42,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403083665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:42,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:42,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:20:42,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411627214] [2021-06-12 17:20:42,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:20:42,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:42,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:20:42,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:20:42,742 INFO L87 Difference]: Start difference. First operand 1576 states and 4668 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:42,810 INFO L93 Difference]: Finished difference Result 1797 states and 5273 transitions. [2021-06-12 17:20:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:20:42,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 57 [2021-06-12 17:20:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:42,813 INFO L225 Difference]: With dead ends: 1797 [2021-06-12 17:20:42,813 INFO L226 Difference]: Without dead ends: 1421 [2021-06-12 17:20:42,813 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:20:42,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2021-06-12 17:20:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1421. [2021-06-12 17:20:42,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 2.9140845070422534) internal successors, (4138), 1420 states have internal predecessors, (4138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4138 transitions. [2021-06-12 17:20:42,833 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4138 transitions. Word has length 57 [2021-06-12 17:20:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:42,833 INFO L482 AbstractCegarLoop]: Abstraction has 1421 states and 4138 transitions. [2021-06-12 17:20:42,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4138 transitions. [2021-06-12 17:20:42,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 17:20:42,835 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:42,835 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:42,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:20:42,835 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:42,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:42,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1038431362, now seen corresponding path program 1 times [2021-06-12 17:20:42,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:42,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070081718] [2021-06-12 17:20:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:42,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:42,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070081718] [2021-06-12 17:20:42,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070081718] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:42,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:42,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:20:42,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680162560] [2021-06-12 17:20:42,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:20:42,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:42,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:20:42,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:20:42,894 INFO L87 Difference]: Start difference. First operand 1421 states and 4138 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:42,988 INFO L93 Difference]: Finished difference Result 1307 states and 3699 transitions. [2021-06-12 17:20:42,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:20:42,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-06-12 17:20:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:42,991 INFO L225 Difference]: With dead ends: 1307 [2021-06-12 17:20:42,991 INFO L226 Difference]: Without dead ends: 1031 [2021-06-12 17:20:42,991 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:20:42,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-06-12 17:20:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2021-06-12 17:20:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1030 states have (on average 2.774757281553398) internal successors, (2858), 1030 states have internal predecessors, (2858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 2858 transitions. [2021-06-12 17:20:43,007 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 2858 transitions. Word has length 58 [2021-06-12 17:20:43,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:43,007 INFO L482 AbstractCegarLoop]: Abstraction has 1031 states and 2858 transitions. [2021-06-12 17:20:43,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 2858 transitions. [2021-06-12 17:20:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-12 17:20:43,008 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:20:43,008 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:20:43,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:20:43,009 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:20:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:20:43,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2126121667, now seen corresponding path program 1 times [2021-06-12 17:20:43,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:20:43,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871515031] [2021-06-12 17:20:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:20:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:20:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:20:43,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:20:43,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871515031] [2021-06-12 17:20:43,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871515031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:20:43,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:20:43,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:20:43,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426868105] [2021-06-12 17:20:43,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:20:43,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:20:43,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:20:43,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:20:43,093 INFO L87 Difference]: Start difference. First operand 1031 states and 2858 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:20:43,153 INFO L93 Difference]: Finished difference Result 734 states and 1967 transitions. [2021-06-12 17:20:43,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 17:20:43,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-06-12 17:20:43,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:20:43,154 INFO L225 Difference]: With dead ends: 734 [2021-06-12 17:20:43,154 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:20:43,154 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:20:43,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:20:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:20:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:20:43,155 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-06-12 17:20:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:20:43,155 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:20:43,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:20:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:20:43,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:20:43,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 17:20:43,157 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:20:43,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:20:43 BasicIcfg [2021-06-12 17:20:43,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:20:43,159 INFO L168 Benchmark]: Toolchain (without parser) took 4215.34 ms. Allocated memory was 219.2 MB in the beginning and 593.5 MB in the end (delta: 374.3 MB). Free memory was 181.6 MB in the beginning and 250.4 MB in the end (delta: -68.8 MB). Peak memory consumption was 305.5 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:43,159 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 219.2 MB. Free memory is still 199.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:20:43,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.36 ms. Allocated memory is still 219.2 MB. Free memory was 181.4 MB in the beginning and 179.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:43,163 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.54 ms. Allocated memory is still 219.2 MB. Free memory was 179.7 MB in the beginning and 177.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:43,165 INFO L168 Benchmark]: Boogie Preprocessor took 13.21 ms. Allocated memory is still 219.2 MB. Free memory was 177.6 MB in the beginning and 176.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:43,166 INFO L168 Benchmark]: RCFGBuilder took 304.43 ms. Allocated memory is still 219.2 MB. Free memory was 176.2 MB in the beginning and 192.4 MB in the end (delta: -16.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:43,167 INFO L168 Benchmark]: TraceAbstraction took 3551.31 ms. Allocated memory was 219.2 MB in the beginning and 593.5 MB in the end (delta: 374.3 MB). Free memory was 191.9 MB in the beginning and 250.4 MB in the end (delta: -58.5 MB). Peak memory consumption was 316.4 MB. Max. memory is 8.0 GB. [2021-06-12 17:20:43,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 219.2 MB. Free memory is still 199.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 319.36 ms. Allocated memory is still 219.2 MB. Free memory was 181.4 MB in the beginning and 179.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.54 ms. Allocated memory is still 219.2 MB. Free memory was 179.7 MB in the beginning and 177.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.21 ms. Allocated memory is still 219.2 MB. Free memory was 177.6 MB in the beginning and 176.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 304.43 ms. Allocated memory is still 219.2 MB. Free memory was 176.2 MB in the beginning and 192.4 MB in the end (delta: -16.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3551.31 ms. Allocated memory was 219.2 MB in the beginning and 593.5 MB in the end (delta: 374.3 MB). Free memory was 191.9 MB in the beginning and 250.4 MB in the end (delta: -58.5 MB). Peak memory consumption was 316.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3454.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 86.6ms, AutomataDifference: 1444.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 430.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 826 SDtfs, 1521 SDslu, 2959 SDs, 0 SdLazy, 363 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 223.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 879.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 477.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 4623 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.9ms SsaConstructionTime, 229.2ms SatisfiabilityAnalysisTime, 613.3ms InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 429 ConstructedInterpolants, 0 QuantifiedInterpolants, 1715 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...