/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-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:25:24,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:25:24,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:25:24,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:25:24,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-12 17:25:24,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-12 17:25:24,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-12 17:25:24,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-12 17:25:24,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-12 17:25:24,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-12 17:25:24,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-12 17:25:24,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-12 17:25:24,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-12 17:25:24,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-12 17:25:24,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-12 17:25:24,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-12 17:25:24,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-12 17:25:24,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:25:24,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:25:24,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:25:24,224 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 17:25:24,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:25:24,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:25:24,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:25:24,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:25:24,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:25:24,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:25:24,264 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:25:24,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:25:24,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:25:24,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:25:24,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:25:24,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:25:24,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:25:24,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:25:24,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:25:24,266 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:25:24,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:25:24,266 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:25:24,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:25:24,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:25:24,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:25:24,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:25:24,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:25:24,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:25:24,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:25:24,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:25:24,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:25:24,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:25:24,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:25:24,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:25:24,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:25:24,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:25:24,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:25:24,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:25:24,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:25:24,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:25:24,612 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:25:24,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2021-06-12 17:25:24,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80db212f/ffaa78c9a8874fcb8044aea3e39376ad/FLAG952d8414f [2021-06-12 17:25:25,173 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:25:25,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2021-06-12 17:25:25,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80db212f/ffaa78c9a8874fcb8044aea3e39376ad/FLAG952d8414f [2021-06-12 17:25:25,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80db212f/ffaa78c9a8874fcb8044aea3e39376ad [2021-06-12 17:25:25,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:25:25,489 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:25:25,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:25:25,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:25:25,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:25:25,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:25,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9c2025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25, skipping insertion in model container [2021-06-12 17:25:25,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:25,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:25:25,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:25:25,842 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-lit/qw2004-1.i[30003,30016] [2021-06-12 17:25:25,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:25:25,862 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:25:25,906 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-lit/qw2004-1.i[30003,30016] [2021-06-12 17:25:25,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:25:25,968 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:25:25,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25 WrapperNode [2021-06-12 17:25:25,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:25:25,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:25:25,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:25:25,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:25:25,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:26,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:26,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:25:26,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:25:26,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:25:26,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:25:26,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:26,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:26,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:26,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:26,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:26,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:26,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (1/1) ... [2021-06-12 17:25:26,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:25:26,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:25:26,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:25:26,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:25:26,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (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 17:25:26,118 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-06-12 17:25:26,119 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-06-12 17:25:26,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:25:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:25:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:25:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:25:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:25:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:25:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:25:26,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:25:26,125 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 17:25:26,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:25:26,511 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-06-12 17:25:26,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:25:26 BoogieIcfgContainer [2021-06-12 17:25:26,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:25:26,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:25:26,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:25:26,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:25:26,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:25:25" (1/3) ... [2021-06-12 17:25:26,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19322d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:25:26, skipping insertion in model container [2021-06-12 17:25:26,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:25:25" (2/3) ... [2021-06-12 17:25:26,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19322d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:25:26, skipping insertion in model container [2021-06-12 17:25:26,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:25:26" (3/3) ... [2021-06-12 17:25:26,519 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2021-06-12 17:25:26,525 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:25:26,526 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:25:26,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:25:26,526 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:25:26,554 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,555 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,555 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,555 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,555 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,555 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,555 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,556 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,556 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,556 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,556 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,556 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,556 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,556 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,557 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,557 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,557 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,557 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,557 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,557 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,558 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,558 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,558 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,558 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,558 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,558 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,559 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,559 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,559 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,559 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,559 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,564 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,565 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,565 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,566 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,566 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,566 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,567 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,567 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,567 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,567 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,567 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,567 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,568 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,568 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,568 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,568 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,569 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,569 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,569 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,569 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,570 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,570 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,570 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,570 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,570 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,570 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,571 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,571 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,571 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,573 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,573 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,573 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,573 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,574 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,574 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,575 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,575 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,575 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,575 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,575 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:25:26,581 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:25:26,600 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-12 17:25:26,626 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:25:26,626 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:25:26,627 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:25:26,627 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:25:26,627 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:25:26,627 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:25:26,627 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:25:26,627 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:25:26,641 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 94 transitions, 193 flow [2021-06-12 17:25:26,690 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1034 states, 1032 states have (on average 2.0920542635658914) internal successors, (2159), 1033 states have internal predecessors, (2159), 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 17:25:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 1034 states, 1032 states have (on average 2.0920542635658914) internal successors, (2159), 1033 states have internal predecessors, (2159), 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 17:25:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-12 17:25:26,719 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:25:26,720 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] [2021-06-12 17:25:26,720 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:25:26,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:25:26,725 INFO L82 PathProgramCache]: Analyzing trace with hash -726564783, now seen corresponding path program 1 times [2021-06-12 17:25:26,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:25:26,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874283535] [2021-06-12 17:25:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:25:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:25:27,002 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 17:25:27,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:25:27,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874283535] [2021-06-12 17:25:27,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874283535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:25:27,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:25:27,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 17:25:27,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565711373] [2021-06-12 17:25:27,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 17:25:27,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:25:27,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 17:25:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 17:25:27,036 INFO L87 Difference]: Start difference. First operand has 1034 states, 1032 states have (on average 2.0920542635658914) internal successors, (2159), 1033 states have internal predecessors, (2159), 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 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:25:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:25:27,102 INFO L93 Difference]: Finished difference Result 1702 states and 3447 transitions. [2021-06-12 17:25:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 17:25:27,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-12 17:25:27,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:25:27,128 INFO L225 Difference]: With dead ends: 1702 [2021-06-12 17:25:27,128 INFO L226 Difference]: Without dead ends: 778 [2021-06-12 17:25:27,131 INFO L728 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 [2021-06-12 17:25:27,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-06-12 17:25:27,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 526. [2021-06-12 17:25:27,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 524 states have (on average 1.9618320610687023) internal successors, (1028), 525 states have internal predecessors, (1028), 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 17:25:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1028 transitions. [2021-06-12 17:25:27,196 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1028 transitions. Word has length 42 [2021-06-12 17:25:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:25:27,197 INFO L482 AbstractCegarLoop]: Abstraction has 526 states and 1028 transitions. [2021-06-12 17:25:27,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:25:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1028 transitions. [2021-06-12 17:25:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-06-12 17:25:27,204 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:25:27,204 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] [2021-06-12 17:25:27,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:25:27,204 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:25:27,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:25:27,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1250469705, now seen corresponding path program 1 times [2021-06-12 17:25:27,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:25:27,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395021103] [2021-06-12 17:25:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:25:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:25:27,368 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 17:25:27,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:25:27,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395021103] [2021-06-12 17:25:27,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395021103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:25:27,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:25:27,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 17:25:27,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694323794] [2021-06-12 17:25:27,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 17:25:27,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:25:27,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 17:25:27,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 17:25:27,374 INFO L87 Difference]: Start difference. First operand 526 states and 1028 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:25:27,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:25:27,438 INFO L93 Difference]: Finished difference Result 495 states and 958 transitions. [2021-06-12 17:25:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:25:27,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-06-12 17:25:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:25:27,441 INFO L225 Difference]: With dead ends: 495 [2021-06-12 17:25:27,442 INFO L226 Difference]: Without dead ends: 409 [2021-06-12 17:25:27,442 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:25:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-06-12 17:25:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2021-06-12 17:25:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.9338235294117647) internal successors, (789), 408 states have internal predecessors, (789), 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 17:25:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 789 transitions. [2021-06-12 17:25:27,456 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 789 transitions. Word has length 42 [2021-06-12 17:25:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:25:27,456 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 789 transitions. [2021-06-12 17:25:27,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:25:27,457 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 789 transitions. [2021-06-12 17:25:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-12 17:25:27,458 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:25:27,458 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, 1] [2021-06-12 17:25:27,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:25:27,459 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:25:27,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:25:27,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1518066886, now seen corresponding path program 1 times [2021-06-12 17:25:27,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:25:27,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140267277] [2021-06-12 17:25:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:25:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:25:27,529 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 17:25:27,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:25:27,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140267277] [2021-06-12 17:25:27,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140267277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:25:27,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:25:27,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 17:25:27,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112874076] [2021-06-12 17:25:27,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 17:25:27,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:25:27,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 17:25:27,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 17:25:27,532 INFO L87 Difference]: Start difference. First operand 409 states and 789 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:25:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:25:27,565 INFO L93 Difference]: Finished difference Result 477 states and 908 transitions. [2021-06-12 17:25:27,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 17:25:27,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-06-12 17:25:27,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:25:27,568 INFO L225 Difference]: With dead ends: 477 [2021-06-12 17:25:27,568 INFO L226 Difference]: Without dead ends: 409 [2021-06-12 17:25:27,568 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:25:27,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-06-12 17:25:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2021-06-12 17:25:27,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.892156862745098) internal successors, (772), 408 states have internal predecessors, (772), 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 17:25:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 772 transitions. [2021-06-12 17:25:27,580 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 772 transitions. Word has length 60 [2021-06-12 17:25:27,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:25:27,582 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 772 transitions. [2021-06-12 17:25:27,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:25:27,582 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 772 transitions. [2021-06-12 17:25:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-12 17:25:27,583 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:25:27,583 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, 1, 1] [2021-06-12 17:25:27,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:25:27,584 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:25:27,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:25:27,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1092923492, now seen corresponding path program 1 times [2021-06-12 17:25:27,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:25:27,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810975187] [2021-06-12 17:25:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:25:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:25:27,671 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 17:25:27,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:25:27,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810975187] [2021-06-12 17:25:27,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810975187] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:25:27,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:25:27,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 17:25:27,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922041453] [2021-06-12 17:25:27,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 17:25:27,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:25:27,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 17:25:27,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 17:25:27,675 INFO L87 Difference]: Start difference. First operand 409 states and 772 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 17:25:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:25:27,727 INFO L93 Difference]: Finished difference Result 509 states and 947 transitions. [2021-06-12 17:25:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 17:25:27,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 61 [2021-06-12 17:25:27,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:25:27,732 INFO L225 Difference]: With dead ends: 509 [2021-06-12 17:25:27,733 INFO L226 Difference]: Without dead ends: 389 [2021-06-12 17:25:27,734 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:25:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-06-12 17:25:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-06-12 17:25:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.8376288659793814) internal successors, (713), 388 states have internal predecessors, (713), 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 17:25:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 713 transitions. [2021-06-12 17:25:27,744 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 713 transitions. Word has length 61 [2021-06-12 17:25:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:25:27,745 INFO L482 AbstractCegarLoop]: Abstraction has 389 states and 713 transitions. [2021-06-12 17:25:27,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 17:25:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 713 transitions. [2021-06-12 17:25:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-12 17:25:27,747 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:25:27,747 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, 1, 1] [2021-06-12 17:25:27,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:25:27,748 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:25:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:25:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash 902938370, now seen corresponding path program 1 times [2021-06-12 17:25:27,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:25:27,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938826791] [2021-06-12 17:25:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:25:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:25:27,814 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 17:25:27,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:25:27,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938826791] [2021-06-12 17:25:27,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938826791] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:25:27,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:25:27,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 17:25:27,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273513804] [2021-06-12 17:25:27,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 17:25:27,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:25:27,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 17:25:27,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 17:25:27,816 INFO L87 Difference]: Start difference. First operand 389 states and 713 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 17:25:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:25:27,834 INFO L93 Difference]: Finished difference Result 389 states and 693 transitions. [2021-06-12 17:25:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 17:25:27,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-06-12 17:25:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:25:27,835 INFO L225 Difference]: With dead ends: 389 [2021-06-12 17:25:27,835 INFO L226 Difference]: Without dead ends: 209 [2021-06-12 17:25:27,836 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 17:25:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-06-12 17:25:27,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-06-12 17:25:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.6971153846153846) internal successors, (353), 208 states have internal predecessors, (353), 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 17:25:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 353 transitions. [2021-06-12 17:25:27,840 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 353 transitions. Word has length 61 [2021-06-12 17:25:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:25:27,841 INFO L482 AbstractCegarLoop]: Abstraction has 209 states and 353 transitions. [2021-06-12 17:25:27,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 17:25:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 353 transitions. [2021-06-12 17:25:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-12 17:25:27,841 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:25:27,842 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, 1, 1] [2021-06-12 17:25:27,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:25:27,842 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:25:27,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:25:27,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1402788768, now seen corresponding path program 2 times [2021-06-12 17:25:27,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:25:27,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268057754] [2021-06-12 17:25:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:25:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:25:27,917 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 17:25:27,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:25:27,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268057754] [2021-06-12 17:25:27,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268057754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:25:27,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:25:27,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:25:27,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735102355] [2021-06-12 17:25:27,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:25:27,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:25:27,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:25:27,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:25:27,920 INFO L87 Difference]: Start difference. First operand 209 states and 353 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 17:25:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:25:28,012 INFO L93 Difference]: Finished difference Result 131 states and 211 transitions. [2021-06-12 17:25:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:25:28,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 61 [2021-06-12 17:25:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:25:28,013 INFO L225 Difference]: With dead ends: 131 [2021-06-12 17:25:28,013 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:25:28,013 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 67.8ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-12 17:25:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:25:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:25:28,014 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 17:25:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:25:28,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-12 17:25:28,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:25:28,014 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:25:28,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 17:25:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:25:28,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:25:28,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:25:28,017 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:25:28,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:25:28 BasicIcfg [2021-06-12 17:25:28,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:25:28,020 INFO L168 Benchmark]: Toolchain (without parser) took 2530.71 ms. Allocated memory was 241.2 MB in the beginning and 305.1 MB in the end (delta: 64.0 MB). Free memory was 203.3 MB in the beginning and 273.8 MB in the end (delta: -70.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:25:28,020 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 241.2 MB. Free memory is still 221.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:25:28,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.33 ms. Allocated memory is still 241.2 MB. Free memory was 203.1 MB in the beginning and 203.7 MB in the end (delta: -528.7 kB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2021-06-12 17:25:28,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.69 ms. Allocated memory is still 241.2 MB. Free memory was 203.7 MB in the beginning and 201.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:25:28,022 INFO L168 Benchmark]: Boogie Preprocessor took 37.92 ms. Allocated memory is still 241.2 MB. Free memory was 201.7 MB in the beginning and 200.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:25:28,022 INFO L168 Benchmark]: RCFGBuilder took 453.00 ms. Allocated memory is still 241.2 MB. Free memory was 200.2 MB in the beginning and 215.8 MB in the end (delta: -15.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:25:28,023 INFO L168 Benchmark]: TraceAbstraction took 1504.86 ms. Allocated memory was 241.2 MB in the beginning and 305.1 MB in the end (delta: 64.0 MB). Free memory was 215.2 MB in the beginning and 273.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. [2021-06-12 17:25:28,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 241.2 MB. Free memory is still 221.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 479.33 ms. Allocated memory is still 241.2 MB. Free memory was 203.1 MB in the beginning and 203.7 MB in the end (delta: -528.7 kB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.69 ms. Allocated memory is still 241.2 MB. Free memory was 203.7 MB in the beginning and 201.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.92 ms. Allocated memory is still 241.2 MB. Free memory was 201.7 MB in the beginning and 200.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 453.00 ms. Allocated memory is still 241.2 MB. Free memory was 200.2 MB in the beginning and 215.8 MB in the end (delta: -15.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1504.86 ms. Allocated memory was 241.2 MB in the beginning and 305.1 MB in the end (delta: 64.0 MB). Free memory was 215.2 MB in the beginning and 273.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 690]: 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 3 procedures, 113 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1391.2ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 39.9ms, AutomataDifference: 397.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 63.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 587 SDtfs, 338 SDslu, 1038 SDs, 0 SdLazy, 90 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 104.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 196.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1034occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 96.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 252 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.5ms SsaConstructionTime, 138.3ms SatisfiabilityAnalysisTime, 441.6ms InterpolantComputationTime, 327 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 321 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...