/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 20:01:02,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 20:01:02,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 20:01:02,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 20:01:02,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 20:01:02,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 20:01:02,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 20:01:02,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 20:01:02,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 20:01:02,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 20:01:02,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 20:01:02,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 20:01:02,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 20:01:02,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 20:01:02,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 20:01:02,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 20:01:02,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 20:01:02,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 20:01:02,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 20:01:02,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 20:01:02,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 20:01:02,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 20:01:02,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 20:01:02,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 20:01:02,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 20:01:02,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 20:01:02,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 20:01:02,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 20:01:02,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 20:01:02,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 20:01:02,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 20:01:02,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 20:01:02,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 20:01:02,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 20:01:02,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 20:01:02,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 20:01:02,185 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-PN-SemanticLbe.epf [2021-06-10 20:01:02,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 20:01:02,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 20:01:02,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 20:01:02,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 20:01:02,229 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 20:01:02,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 20:01:02,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 20:01:02,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 20:01:02,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 20:01:02,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 20:01:02,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 20:01:02,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 20:01:02,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 20:01:02,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 20:01:02,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 20:01:02,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 20:01:02,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 20:01:02,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 20:01:02,231 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 20:01:02,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 20:01:02,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 20:01:02,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 20:01:02,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 20:01:02,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 20:01:02,579 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 20:01:02,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-06-10 20:01:02,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8efc18baf/c936eb6ee35c43e1b968891a797c9e0a/FLAG4473e936a [2021-06-10 20:01:03,170 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 20:01:03,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-06-10 20:01:03,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8efc18baf/c936eb6ee35c43e1b968891a797c9e0a/FLAG4473e936a [2021-06-10 20:01:03,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8efc18baf/c936eb6ee35c43e1b968891a797c9e0a [2021-06-10 20:01:03,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 20:01:03,683 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 20:01:03,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 20:01:03,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 20:01:03,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 20:01:03,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 08:01:03" (1/1) ... [2021-06-10 20:01:03,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7110792f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:03, skipping insertion in model container [2021-06-10 20:01:03,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 08:01:03" (1/1) ... [2021-06-10 20:01:03,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 20:01:03,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 20:01:04,014 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-10 20:01:04,135 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2021-06-10 20:01:04,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 20:01:04,148 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 20:01:04,159 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-10 20:01:04,185 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2021-06-10 20:01:04,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 20:01:04,238 INFO L208 MainTranslator]: Completed translation [2021-06-10 20:01:04,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04 WrapperNode [2021-06-10 20:01:04,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 20:01:04,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 20:01:04,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 20:01:04,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 20:01:04,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (1/1) ... [2021-06-10 20:01:04,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (1/1) ... [2021-06-10 20:01:04,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 20:01:04,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 20:01:04,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 20:01:04,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 20:01:04,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (1/1) ... [2021-06-10 20:01:04,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (1/1) ... [2021-06-10 20:01:04,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (1/1) ... [2021-06-10 20:01:04,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (1/1) ... [2021-06-10 20:01:04,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (1/1) ... [2021-06-10 20:01:04,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (1/1) ... [2021-06-10 20:01:04,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (1/1) ... [2021-06-10 20:01:04,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 20:01:04,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 20:01:04,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 20:01:04,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 20:01:04,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (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 [2021-06-10 20:01:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-10 20:01:04,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-10 20:01:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 20:01:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 20:01:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 20:01:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 20:01:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 20:01:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 20:01:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 20:01:04,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 20:01:04,520 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 20:01:05,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 20:01:05,101 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-10 20:01:05,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 08:01:05 BoogieIcfgContainer [2021-06-10 20:01:05,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 20:01:05,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 20:01:05,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 20:01:05,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 20:01:05,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 08:01:03" (1/3) ... [2021-06-10 20:01:05,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3c8107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 08:01:05, skipping insertion in model container [2021-06-10 20:01:05,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 08:01:04" (2/3) ... [2021-06-10 20:01:05,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3c8107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 08:01:05, skipping insertion in model container [2021-06-10 20:01:05,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 08:01:05" (3/3) ... [2021-06-10 20:01:05,107 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2021-06-10 20:01:05,111 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 20:01:05,115 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 20:01:05,115 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 20:01:05,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,156 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 20:01:05,173 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 20:01:05,186 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-10 20:01:05,213 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 20:01:05,213 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 20:01:05,213 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 20:01:05,213 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 20:01:05,213 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 20:01:05,213 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 20:01:05,213 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 20:01:05,213 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 20:01:05,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 101 flow [2021-06-10 20:01:05,246 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2021-06-10 20:01:05,246 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 20:01:05,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2021-06-10 20:01:05,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 48 transitions, 101 flow [2021-06-10 20:01:05,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 34 transitions, 71 flow [2021-06-10 20:01:05,270 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 20:01:05,283 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 34 transitions, 71 flow [2021-06-10 20:01:05,286 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 34 transitions, 71 flow [2021-06-10 20:01:05,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 71 flow [2021-06-10 20:01:05,311 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-06-10 20:01:05,311 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 20:01:05,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 34 events. 0/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 20:01:05,312 INFO L151 LiptonReduction]: Number of co-enabled transitions 144 [2021-06-10 20:01:05,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:05,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:05,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:05,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 20:01:05,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 20:01:05,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:05,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:05,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:05,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:05,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:05,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:05,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:05,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:05,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:05,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:06,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:06,310 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-06-10 20:01:06,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,485 INFO L427 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-06-10 20:01:06,486 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-06-10 20:01:06,507 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 20:01:06,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:06,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:06,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:06,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-10 20:01:06,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 20:01:06,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:06,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:06,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:06,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:06,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 20:01:06,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 20:01:07,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:07,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:07,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:07,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 20:01:07,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-06-10 20:01:07,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:07,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:07,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:07,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:07,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:07,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 20:01:07,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 20:01:07,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:07,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:07,605 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2021-06-10 20:01:07,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:07,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:07,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:07,866 INFO L427 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2021-06-10 20:01:07,867 INFO L725 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-06-10 20:01:07,868 INFO L732 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:07,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 20:01:08,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:08,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:08,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-10 20:01:08,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 20:01:08,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:08,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:08,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 20:01:08,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-06-10 20:01:08,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:08,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-06-10 20:01:08,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-10 20:01:08,245 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-06-10 20:01:08,404 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-06-10 20:01:08,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 20:01:08,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 20:01:08,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 20:01:08,465 INFO L163 LiptonReduction]: Checked pairs total: 171 [2021-06-10 20:01:08,465 INFO L165 LiptonReduction]: Total number of compositions: 28 [2021-06-10 20:01:08,467 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3198 [2021-06-10 20:01:08,472 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-06-10 20:01:08,473 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 20:01:08,473 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 20:01:08,473 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-10 20:01:08,474 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 20:01:08,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 20:01:08,498 INFO L82 PathProgramCache]: Analyzing trace with hash 225333773, now seen corresponding path program 1 times [2021-06-10 20:01:08,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 20:01:08,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290761597] [2021-06-10 20:01:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 20:01:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 20:01:08,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:08,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 20:01:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 20:01:08,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290761597] [2021-06-10 20:01:08,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 20:01:08,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 20:01:08,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206336732] [2021-06-10 20:01:08,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 20:01:08,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 20:01:08,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 20:01:08,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 20:01:08,684 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 76 [2021-06-10 20:01:08,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 7 transitions, 17 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-06-10 20:01:08,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 20:01:08,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 76 [2021-06-10 20:01:08,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 20:01:08,705 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-06-10 20:01:08,706 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 20:01:08,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 11 events. 1/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 11 event pairs, 1 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 17. Up to 8 conditions per place. [2021-06-10 20:01:08,707 INFO L132 encePairwiseOnDemand]: 73/76 looper letters, 3 selfloop transitions, 2 changer transitions 2/8 dead transitions. [2021-06-10 20:01:08,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 8 transitions, 31 flow [2021-06-10 20:01:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 20:01:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 20:01:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2021-06-10 20:01:08,717 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2021-06-10 20:01:08,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2021-06-10 20:01:08,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2021-06-10 20:01:08,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 20:01:08,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2021-06-10 20:01:08,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2021-06-10 20:01:08,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2021-06-10 20:01:08,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2021-06-10 20:01:08,731 INFO L185 Difference]: Start difference. First operand has 11 places, 7 transitions, 17 flow. Second operand 3 states and 160 transitions. [2021-06-10 20:01:08,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 8 transitions, 31 flow [2021-06-10 20:01:08,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 8 transitions, 30 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 20:01:08,733 INFO L241 Difference]: Finished difference. Result has 13 places, 6 transitions, 22 flow [2021-06-10 20:01:08,735 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22, PETRI_PLACES=13, PETRI_TRANSITIONS=6} [2021-06-10 20:01:08,735 INFO L343 CegarLoopForPetriNet]: 11 programPoint places, 2 predicate places. [2021-06-10 20:01:08,735 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 6 transitions, 22 flow [2021-06-10 20:01:08,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-06-10 20:01:08,735 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 20:01:08,736 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-10 20:01:08,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 20:01:08,736 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 20:01:08,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 20:01:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1604587276, now seen corresponding path program 1 times [2021-06-10 20:01:08,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 20:01:08,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079731129] [2021-06-10 20:01:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 20:01:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 20:01:08,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 20:01:08,835 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-06-10 20:01:08,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 20:01:08,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 20:01:08,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 20:01:08,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 20:01:08,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079731129] [2021-06-10 20:01:08,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 20:01:08,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 20:01:08,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816061121] [2021-06-10 20:01:08,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 20:01:08,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 20:01:08,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 20:01:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 20:01:08,846 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-06-10 20:01:08,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 6 transitions, 22 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2021-06-10 20:01:08,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 20:01:08,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-06-10 20:01:08,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 20:01:08,863 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-06-10 20:01:08,863 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-10 20:01:08,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 4 events. 0/4 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 20:01:08,864 INFO L132 encePairwiseOnDemand]: 73/76 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2021-06-10 20:01:08,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 4 transitions, 17 flow [2021-06-10 20:01:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 20:01:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 20:01:08,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2021-06-10 20:01:08,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8256578947368421 [2021-06-10 20:01:08,871 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 251 transitions. [2021-06-10 20:01:08,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 251 transitions. [2021-06-10 20:01:08,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 20:01:08,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 251 transitions. [2021-06-10 20:01:08,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2021-06-10 20:01:08,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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) [2021-06-10 20:01:08,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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) [2021-06-10 20:01:08,875 INFO L185 Difference]: Start difference. First operand has 13 places, 6 transitions, 22 flow. Second operand 4 states and 251 transitions. [2021-06-10 20:01:08,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 4 transitions, 17 flow [2021-06-10 20:01:08,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 4 transitions, 15 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 20:01:08,875 INFO L241 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2021-06-10 20:01:08,876 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2021-06-10 20:01:08,876 INFO L343 CegarLoopForPetriNet]: 11 programPoint places, 0 predicate places. [2021-06-10 20:01:08,876 INFO L480 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2021-06-10 20:01:08,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2021-06-10 20:01:08,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 20:01:08,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 08:01:08 BasicIcfg [2021-06-10 20:01:08,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 20:01:08,880 INFO L168 Benchmark]: Toolchain (without parser) took 5196.25 ms. Allocated memory was 396.4 MB in the beginning and 476.1 MB in the end (delta: 79.7 MB). Free memory was 358.9 MB in the beginning and 367.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 72.0 MB. Max. memory is 16.0 GB. [2021-06-10 20:01:08,880 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 396.4 MB. Free memory is still 376.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 20:01:08,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.82 ms. Allocated memory is still 396.4 MB. Free memory was 358.7 MB in the beginning and 358.1 MB in the end (delta: 569.9 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-10 20:01:08,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.29 ms. Allocated memory is still 396.4 MB. Free memory was 358.1 MB in the beginning and 356.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 20:01:08,884 INFO L168 Benchmark]: Boogie Preprocessor took 39.98 ms. Allocated memory is still 396.4 MB. Free memory was 356.0 MB in the beginning and 353.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 20:01:08,884 INFO L168 Benchmark]: RCFGBuilder took 734.28 ms. Allocated memory is still 396.4 MB. Free memory was 353.9 MB in the beginning and 323.5 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-06-10 20:01:08,887 INFO L168 Benchmark]: TraceAbstraction took 3775.83 ms. Allocated memory was 396.4 MB in the beginning and 476.1 MB in the end (delta: 79.7 MB). Free memory was 323.5 MB in the beginning and 367.1 MB in the end (delta: -43.6 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.0 GB. [2021-06-10 20:01:08,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 396.4 MB. Free memory is still 376.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 548.82 ms. Allocated memory is still 396.4 MB. Free memory was 358.7 MB in the beginning and 358.1 MB in the end (delta: 569.9 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 79.29 ms. Allocated memory is still 396.4 MB. Free memory was 358.1 MB in the beginning and 356.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 39.98 ms. Allocated memory is still 396.4 MB. Free memory was 356.0 MB in the beginning and 353.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 734.28 ms. Allocated memory is still 396.4 MB. Free memory was 353.9 MB in the beginning and 323.5 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3775.83 ms. Allocated memory was 396.4 MB in the beginning and 476.1 MB in the end (delta: 79.7 MB). Free memory was 323.5 MB in the beginning and 367.1 MB in the end (delta: -43.6 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3179.4ms, 38 PlacesBefore, 11 PlacesAfterwards, 34 TransitionsBefore, 7 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 28 TotalNumberOfCompositions, 171 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 125, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 100, positive: 86, positive conditional: 0, positive unconditional: 86, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 100, positive: 86, positive conditional: 0, positive unconditional: 86, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 100, positive: 84, positive conditional: 0, positive unconditional: 84, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 150, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 125, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 100, unknown conditional: 0, unknown unconditional: 100] , Statistics on independence cache: Total cache size (in pairs): 164, Positive cache size: 150, Positive conditional cache size: 0, Positive unconditional cache size: 150, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - PositiveResult [Line: 738]: 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 CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3667.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 85.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3257.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.9ms SsaConstructionTime, 41.4ms SatisfiabilityAnalysisTime, 158.3ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...