/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:15:16,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:15:16,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:15:16,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:15:16,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:15:16,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:15:16,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:15:16,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:15:16,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:15:16,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:15:16,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:15:16,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:15:16,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:15:16,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:15:16,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:15:16,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:15:16,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:15:16,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:15:16,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:15:16,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:15:16,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:15:16,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:15:16,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:15:16,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:15:16,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 11:15:16,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:15:16,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:15:16,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:15:16,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:15:16,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:15:16,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:15:16,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:15:16,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:15:16,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:15:16,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:15:16,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:15:16,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:15:16,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:15:16,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:15:16,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:15:16,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:15:16,202 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:15:16,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:15:16,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:15:16,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:15:16,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:15:16,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:15:16,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:15:16,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:15:16,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:15:16,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:15:16,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:15:16,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:15:16,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:15:16,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:15:16,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:15:16,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:15:16,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:15:16,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:15:16,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:15:16,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:15:16,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:15:16,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:15:16,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:15:16,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:15:16,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:15:16,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:15:16,666 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:15:16,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/qw2004-1.i [2020-12-22 11:15:16,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23331f53e/dc6d878c829b44329f36fd538976a56c/FLAGe5f6e3526 [2020-12-22 11:15:17,459 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:15:17,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-1.i [2020-12-22 11:15:17,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23331f53e/dc6d878c829b44329f36fd538976a56c/FLAGe5f6e3526 [2020-12-22 11:15:17,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23331f53e/dc6d878c829b44329f36fd538976a56c [2020-12-22 11:15:17,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:15:17,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:15:17,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:15:17,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:15:17,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:15:17,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:15:17" (1/1) ... [2020-12-22 11:15:17,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fa301f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:17, skipping insertion in model container [2020-12-22 11:15:17,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:15:17" (1/1) ... [2020-12-22 11:15:17,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:15:17,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:15:18,162 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-1.i[30003,30016] [2020-12-22 11:15:18,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:15:18,194 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:15:18,235 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-1.i[30003,30016] [2020-12-22 11:15:18,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:15:18,361 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:15:18,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18 WrapperNode [2020-12-22 11:15:18,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:15:18,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:15:18,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:15:18,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:15:18,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (1/1) ... [2020-12-22 11:15:18,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (1/1) ... [2020-12-22 11:15:18,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:15:18,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:15:18,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:15:18,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:15:18,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (1/1) ... [2020-12-22 11:15:18,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (1/1) ... [2020-12-22 11:15:18,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (1/1) ... [2020-12-22 11:15:18,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (1/1) ... [2020-12-22 11:15:18,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (1/1) ... [2020-12-22 11:15:18,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (1/1) ... [2020-12-22 11:15:18,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (1/1) ... [2020-12-22 11:15:18,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:15:18,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:15:18,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:15:18,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:15:18,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (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 [2020-12-22 11:15:18,597 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-12-22 11:15:18,598 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-12-22 11:15:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:15:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:15:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:15:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:15:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:15:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:15:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:15:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:15:18,605 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:15:19,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:15:19,211 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-22 11:15:19,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:15:19 BoogieIcfgContainer [2020-12-22 11:15:19,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:15:19,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:15:19,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:15:19,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:15:19,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:15:17" (1/3) ... [2020-12-22 11:15:19,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19331f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:15:19, skipping insertion in model container [2020-12-22 11:15:19,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:18" (2/3) ... [2020-12-22 11:15:19,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19331f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:15:19, skipping insertion in model container [2020-12-22 11:15:19,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:15:19" (3/3) ... [2020-12-22 11:15:19,226 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2020-12-22 11:15:19,232 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:15:19,233 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:15:19,238 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:15:19,240 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:15:19,268 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,268 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,269 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,269 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,269 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,269 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,270 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,270 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,270 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,270 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,270 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,271 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,271 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,271 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,271 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,272 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,272 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,272 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,272 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,272 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,273 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,273 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,273 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,273 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,273 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,274 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,274 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,274 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,274 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,274 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,275 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,275 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,275 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,275 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,276 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,276 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,276 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,276 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,277 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,277 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,277 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,277 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,278 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,278 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,278 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,278 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,279 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,279 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,279 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,279 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,280 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,280 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,280 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,280 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,280 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,281 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,281 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,281 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,281 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,282 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,284 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,284 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,285 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,285 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,285 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,285 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,285 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,286 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,286 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,286 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,286 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:19,288 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:15:19,309 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 11:15:19,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:15:19,334 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:15:19,334 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:15:19,335 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:15:19,335 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:15:19,335 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:15:19,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:15:19,335 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:15:19,350 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:15:19,352 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 91 transitions, 187 flow [2020-12-22 11:15:19,356 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 91 transitions, 187 flow [2020-12-22 11:15:19,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 187 flow [2020-12-22 11:15:19,411 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2020-12-22 11:15:19,412 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:15:19,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 90 events. 6/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2020-12-22 11:15:19,429 INFO L116 LiptonReduction]: Number of co-enabled transitions 2208 [2020-12-22 11:15:22,651 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-22 11:15:22,652 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:22,659 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-22 11:15:22,660 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:22,703 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-22 11:15:22,703 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:22,712 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-22 11:15:22,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:23,133 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-22 11:15:23,408 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-22 11:15:23,794 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-22 11:15:23,795 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:23,809 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-22 11:15:23,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:23,822 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-22 11:15:23,823 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:23,830 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 8, 1] term [2020-12-22 11:15:23,831 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:23,837 INFO L131 LiptonReduction]: Checked pairs total: 2537 [2020-12-22 11:15:23,837 INFO L133 LiptonReduction]: Total number of compositions: 102 [2020-12-22 11:15:23,845 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 14 transitions, 33 flow [2020-12-22 11:15:23,854 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 32 states. [2020-12-22 11:15:23,857 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-22 11:15:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 11:15:23,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:15:23,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 11:15:23,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:15:23,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:15:23,871 INFO L82 PathProgramCache]: Analyzing trace with hash 11541918, now seen corresponding path program 1 times [2020-12-22 11:15:23,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:15:23,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348737520] [2020-12-22 11:15:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:15:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:15:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:15:24,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348737520] [2020-12-22 11:15:24,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:15:24,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:15:24,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492975030] [2020-12-22 11:15:24,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:15:24,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:15:24,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:15:24,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:15:24,171 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-12-22 11:15:24,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:15:24,208 INFO L93 Difference]: Finished difference Result 31 states and 50 transitions. [2020-12-22 11:15:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:15:24,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 11:15:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:15:24,220 INFO L225 Difference]: With dead ends: 31 [2020-12-22 11:15:24,221 INFO L226 Difference]: Without dead ends: 13 [2020-12-22 11:15:24,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:15:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-22 11:15:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-22 11:15:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-22 11:15:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-12-22 11:15:24,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 4 [2020-12-22 11:15:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:15:24,261 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-12-22 11:15:24,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:15:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-12-22 11:15:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:15:24,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:15:24,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:15:24,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:15:24,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:15:24,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:15:24,269 INFO L82 PathProgramCache]: Analyzing trace with hash -907954422, now seen corresponding path program 1 times [2020-12-22 11:15:24,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:15:24,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439079165] [2020-12-22 11:15:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:15:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:15:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:15:24,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439079165] [2020-12-22 11:15:24,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:15:24,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:15:24,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183716481] [2020-12-22 11:15:24,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:15:24,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:15:24,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:15:24,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:15:24,468 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 6 states. [2020-12-22 11:15:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:15:24,550 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-22 11:15:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:15:24,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 11:15:24,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:15:24,552 INFO L225 Difference]: With dead ends: 16 [2020-12-22 11:15:24,552 INFO L226 Difference]: Without dead ends: 12 [2020-12-22 11:15:24,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:15:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-22 11:15:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-22 11:15:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-22 11:15:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-22 11:15:24,557 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2020-12-22 11:15:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:15:24,557 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-22 11:15:24,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:15:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-22 11:15:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:15:24,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:15:24,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:15:24,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:15:24,558 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:15:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:15:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1323538872, now seen corresponding path program 2 times [2020-12-22 11:15:24,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:15:24,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548859809] [2020-12-22 11:15:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:15:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:15:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:15:24,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548859809] [2020-12-22 11:15:24,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:15:24,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:15:24,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764680175] [2020-12-22 11:15:24,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:15:24,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:15:24,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:15:24,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:15:24,626 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2020-12-22 11:15:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:15:24,655 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-12-22 11:15:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:15:24,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-22 11:15:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:15:24,657 INFO L225 Difference]: With dead ends: 11 [2020-12-22 11:15:24,657 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:15:24,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:15:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:15:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:15:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:15:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:15:24,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-12-22 11:15:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:15:24,659 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:15:24,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:15:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:15:24,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:15:24,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:15:24,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:15:24 BasicIcfg [2020-12-22 11:15:24,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:15:24,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:15:24,666 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:15:24,666 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:15:24,666 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:15:19" (3/4) ... [2020-12-22 11:15:24,671 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:15:24,679 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure BCSP_PnpStop [2020-12-22 11:15:24,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-22 11:15:24,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-22 11:15:24,686 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:15:24,687 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:15:24,753 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-lit/qw2004-1.i-witness.graphml [2020-12-22 11:15:24,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:15:24,756 INFO L168 Benchmark]: Toolchain (without parser) took 6990.84 ms. Allocated memory was 168.8 MB in the beginning and 244.3 MB in the end (delta: 75.5 MB). Free memory was 141.9 MB in the beginning and 209.4 MB in the end (delta: -67.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:24,756 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 143.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:15:24,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.27 ms. Allocated memory is still 168.8 MB. Free memory was 141.6 MB in the beginning and 111.3 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:24,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.73 ms. Allocated memory is still 168.8 MB. Free memory was 111.3 MB in the beginning and 109.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:24,758 INFO L168 Benchmark]: Boogie Preprocessor took 29.31 ms. Allocated memory is still 168.8 MB. Free memory was 109.2 MB in the beginning and 107.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:24,762 INFO L168 Benchmark]: RCFGBuilder took 738.51 ms. Allocated memory is still 168.8 MB. Free memory was 107.9 MB in the beginning and 81.4 MB in the end (delta: 26.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:24,763 INFO L168 Benchmark]: TraceAbstraction took 5449.74 ms. Allocated memory was 168.8 MB in the beginning and 244.3 MB in the end (delta: 75.5 MB). Free memory was 81.1 MB in the beginning and 212.1 MB in the end (delta: -130.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:15:24,764 INFO L168 Benchmark]: Witness Printer took 88.34 ms. Allocated memory is still 244.3 MB. Free memory was 212.1 MB in the beginning and 209.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:24,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 143.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 596.27 ms. Allocated memory is still 168.8 MB. Free memory was 141.6 MB in the beginning and 111.3 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.73 ms. Allocated memory is still 168.8 MB. Free memory was 111.3 MB in the beginning and 109.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.31 ms. Allocated memory is still 168.8 MB. Free memory was 109.2 MB in the beginning and 107.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 738.51 ms. Allocated memory is still 168.8 MB. Free memory was 107.9 MB in the beginning and 81.4 MB in the end (delta: 26.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5449.74 ms. Allocated memory was 168.8 MB in the beginning and 244.3 MB in the end (delta: 75.5 MB). Free memory was 81.1 MB in the beginning and 212.1 MB in the end (delta: -130.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 88.34 ms. Allocated memory is still 244.3 MB. Free memory was 212.1 MB in the beginning and 209.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1575 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 41 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 89 PlacesBefore, 16 PlacesAfterwards, 91 TransitionsBefore, 14 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 8 FixpointIterations, 18 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 4 ChoiceCompositions, 102 TotalNumberOfCompositions, 2537 MoverChecksTotal - PositiveResult [Line: 690]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 28 SDtfs, 16 SDslu, 24 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...