/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-344d29da17dfcedfb91d6006a5dbd12b556a868d-344d29d [2021-02-16 15:07:56,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-16 15:07:56,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-16 15:07:56,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-16 15:07:56,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-16 15:07:56,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-16 15:07:56,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-16 15:07:56,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-16 15:07:56,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-16 15:07:56,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-16 15:07:56,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-16 15:07:56,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-16 15:07:56,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-16 15:07:56,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-16 15:07:56,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-16 15:07:56,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-16 15:07:56,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-16 15:07:56,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-16 15:07:56,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-16 15:07:56,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-16 15:07:56,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-16 15:07:56,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-16 15:07:56,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-16 15:07:56,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-16 15:07:56,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-16 15:07:56,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-16 15:07:56,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-16 15:07:56,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-16 15:07:56,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-16 15:07:56,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-16 15:07:56,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-16 15:07:56,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-16 15:07:56,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-16 15:07:56,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-16 15:07:56,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-16 15:07:56,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-16 15:07:56,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-16 15:07:56,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-16 15:07:56,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-16 15:07:56,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-16 15:07:56,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-16 15:07:56,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-02-16 15:07:56,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-16 15:07:56,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-16 15:07:56,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-16 15:07:56,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-16 15:07:56,726 INFO L138 SettingsManager]: * Use SBE=true [2021-02-16 15:07:56,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-16 15:07:56,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-16 15:07:56,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-16 15:07:56,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-16 15:07:56,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-16 15:07:56,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-16 15:07:56,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-16 15:07:56,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-16 15:07:56,728 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-16 15:07:56,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-16 15:07:56,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-16 15:07:56,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-16 15:07:56,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-16 15:07:56,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-16 15:07:56,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-16 15:07:56,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-16 15:07:56,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-16 15:07:56,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-16 15:07:56,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-16 15:07:56,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-16 15:07:56,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-16 15:07:56,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-16 15:07:56,732 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-16 15:07:56,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-16 15:07:56,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-16 15:07:57,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-16 15:07:57,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-16 15:07:57,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-16 15:07:57,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-16 15:07:57,298 INFO L275 PluginConnector]: CDTParser initialized [2021-02-16 15:07:57,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-02-16 15:07:57,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2191c30/23c6f42836b345f18405ae5070fdc953/FLAGfd8651772 [2021-02-16 15:07:58,193 INFO L306 CDTParser]: Found 1 translation units. [2021-02-16 15:07:58,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-02-16 15:07:58,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2191c30/23c6f42836b345f18405ae5070fdc953/FLAGfd8651772 [2021-02-16 15:07:58,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f2191c30/23c6f42836b345f18405ae5070fdc953 [2021-02-16 15:07:58,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-16 15:07:58,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-02-16 15:07:58,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-16 15:07:58,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-16 15:07:58,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-16 15:07:58,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:07:58" (1/1) ... [2021-02-16 15:07:58,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11432370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:58, skipping insertion in model container [2021-02-16 15:07:58,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:07:58" (1/1) ... [2021-02-16 15:07:58,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-16 15:07:58,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-16 15:07:58,650 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-02-16 15:07:58,822 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] [2021-02-16 15:07:58,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 15:07:58,847 INFO L203 MainTranslator]: Completed pre-run [2021-02-16 15:07:58,880 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-02-16 15:07:58,925 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] [2021-02-16 15:07:58,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 15:07:59,073 INFO L208 MainTranslator]: Completed translation [2021-02-16 15:07:59,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59 WrapperNode [2021-02-16 15:07:59,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-16 15:07:59,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-16 15:07:59,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-16 15:07:59,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-16 15:07:59,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (1/1) ... [2021-02-16 15:07:59,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (1/1) ... [2021-02-16 15:07:59,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-16 15:07:59,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-16 15:07:59,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-16 15:07:59,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-16 15:07:59,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (1/1) ... [2021-02-16 15:07:59,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (1/1) ... [2021-02-16 15:07:59,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (1/1) ... [2021-02-16 15:07:59,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (1/1) ... [2021-02-16 15:07:59,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (1/1) ... [2021-02-16 15:07:59,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (1/1) ... [2021-02-16 15:07:59,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (1/1) ... [2021-02-16 15:07:59,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-16 15:07:59,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-16 15:07:59,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-16 15:07:59,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-16 15:07:59,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (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 [2021-02-16 15:07:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-02-16 15:07:59,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-02-16 15:07:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-16 15:07:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-02-16 15:07:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-16 15:07:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-16 15:07:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-16 15:07:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-02-16 15:07:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-16 15:07:59,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-16 15:07:59,275 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-16 15:07:59,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-16 15:07:59,816 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-16 15:07:59,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:07:59 BoogieIcfgContainer [2021-02-16 15:07:59,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-16 15:07:59,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-16 15:07:59,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-16 15:07:59,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-16 15:07:59,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:07:58" (1/3) ... [2021-02-16 15:07:59,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aff78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:07:59, skipping insertion in model container [2021-02-16 15:07:59,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:07:59" (2/3) ... [2021-02-16 15:07:59,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aff78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:07:59, skipping insertion in model container [2021-02-16 15:07:59,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:07:59" (3/3) ... [2021-02-16 15:07:59,837 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2021-02-16 15:07:59,845 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-16 15:07:59,846 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-16 15:07:59,851 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-16 15:07:59,852 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-16 15:07:59,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,899 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,905 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,906 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,907 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,911 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 15:07:59,922 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-02-16 15:07:59,944 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-02-16 15:07:59,984 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-16 15:07:59,984 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-16 15:07:59,984 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-16 15:07:59,985 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-16 15:07:59,985 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-16 15:07:59,985 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-16 15:07:59,985 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-16 15:07:59,985 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-16 15:08:00,004 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 48 transitions, 101 flow [2021-02-16 15:08:00,046 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 191 states, 189 states have (on average 1.8042328042328042) internal successors, (341), 190 states have internal predecessors, (341), 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) [2021-02-16 15:08:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 189 states have (on average 1.8042328042328042) internal successors, (341), 190 states have internal predecessors, (341), 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) [2021-02-16 15:08:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-16 15:08:00,084 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 15:08:00,085 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 15:08:00,086 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 15:08:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 15:08:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash 700530988, now seen corresponding path program 1 times [2021-02-16 15:08:00,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 15:08:00,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929713453] [2021-02-16 15:08:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 15:08:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 15:08:00,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:00,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 15:08:00,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:00,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 15:08:00,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:00,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 15:08:00,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:00,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 15:08:00,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:00,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 15:08:00,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:00,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 15:08:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 15:08:00,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929713453] [2021-02-16 15:08:00,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 15:08:00,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-16 15:08:00,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183301881] [2021-02-16 15:08:00,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-16 15:08:00,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 15:08:00,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-16 15:08:00,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-16 15:08:00,571 INFO L87 Difference]: Start difference. First operand has 191 states, 189 states have (on average 1.8042328042328042) internal successors, (341), 190 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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) [2021-02-16 15:08:00,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 15:08:00,706 INFO L93 Difference]: Finished difference Result 242 states and 417 transitions. [2021-02-16 15:08:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-16 15:08:00,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-02-16 15:08:00,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 15:08:00,718 INFO L225 Difference]: With dead ends: 242 [2021-02-16 15:08:00,719 INFO L226 Difference]: Without dead ends: 70 [2021-02-16 15:08:00,720 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-02-16 15:08:00,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-16 15:08:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-02-16 15:08:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.5072463768115942) internal successors, (104), 69 states have internal predecessors, (104), 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) [2021-02-16 15:08:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 104 transitions. [2021-02-16 15:08:00,765 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 104 transitions. Word has length 28 [2021-02-16 15:08:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 15:08:00,766 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 104 transitions. [2021-02-16 15:08:00,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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) [2021-02-16 15:08:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 104 transitions. [2021-02-16 15:08:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-16 15:08:00,768 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 15:08:00,768 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 15:08:00,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-16 15:08:00,769 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 15:08:00,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 15:08:00,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1084250521, now seen corresponding path program 1 times [2021-02-16 15:08:00,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 15:08:00,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491936791] [2021-02-16 15:08:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 15:08:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 15:08:00,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:00,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 15:08:00,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:00,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 15:08:00,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:00,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 15:08:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 15:08:00,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491936791] [2021-02-16 15:08:00,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 15:08:00,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-16 15:08:00,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803566076] [2021-02-16 15:08:00,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-16 15:08:00,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 15:08:00,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-16 15:08:00,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-16 15:08:00,862 INFO L87 Difference]: Start difference. First operand 70 states and 104 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-02-16 15:08:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 15:08:00,875 INFO L93 Difference]: Finished difference Result 70 states and 103 transitions. [2021-02-16 15:08:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-16 15:08:00,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-02-16 15:08:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 15:08:00,881 INFO L225 Difference]: With dead ends: 70 [2021-02-16 15:08:00,881 INFO L226 Difference]: Without dead ends: 64 [2021-02-16 15:08:00,882 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-16 15:08:00,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-16 15:08:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-16 15:08:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 63 states have internal predecessors, (92), 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) [2021-02-16 15:08:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2021-02-16 15:08:00,891 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 31 [2021-02-16 15:08:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 15:08:00,892 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2021-02-16 15:08:00,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-02-16 15:08:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2021-02-16 15:08:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-16 15:08:00,894 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 15:08:00,894 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 15:08:00,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-16 15:08:00,895 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 15:08:00,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 15:08:00,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1479296215, now seen corresponding path program 2 times [2021-02-16 15:08:00,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 15:08:00,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970560784] [2021-02-16 15:08:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 15:08:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 15:08:01,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:01,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 15:08:01,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:01,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 15:08:01,019 WARN L141 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-02-16 15:08:01,020 WARN L147 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size 4 [2021-02-16 15:08:01,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 15:08:01,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 15:08:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 15:08:01,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970560784] [2021-02-16 15:08:01,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 15:08:01,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-16 15:08:01,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072149991] [2021-02-16 15:08:01,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-16 15:08:01,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 15:08:01,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-16 15:08:01,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-16 15:08:01,033 INFO L87 Difference]: Start difference. First operand 64 states and 92 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-02-16 15:08:01,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 15:08:01,040 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2021-02-16 15:08:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-16 15:08:01,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-02-16 15:08:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 15:08:01,042 INFO L225 Difference]: With dead ends: 36 [2021-02-16 15:08:01,042 INFO L226 Difference]: Without dead ends: 0 [2021-02-16 15:08:01,042 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-16 15:08:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-16 15:08:01,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-16 15:08:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 15:08:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-16 15:08:01,044 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-02-16 15:08:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 15:08:01,044 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-16 15:08:01,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-02-16 15:08:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-16 15:08:01,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-16 15:08:01,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-16 15:08:01,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 03:08:01 BasicIcfg [2021-02-16 15:08:01,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-16 15:08:01,052 INFO L168 Benchmark]: Toolchain (without parser) took 2652.48 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 183.5 MB in the end (delta: 92.6 MB). Peak memory consumption was 92.7 MB. Max. memory is 16.0 GB. [2021-02-16 15:08:01,053 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 273.2 MB in the beginning and 273.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-16 15:08:01,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.04 ms. Allocated memory is still 302.0 MB. Free memory was 275.0 MB in the beginning and 276.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.0 GB. [2021-02-16 15:08:01,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.74 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 274.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-16 15:08:01,056 INFO L168 Benchmark]: Boogie Preprocessor took 27.73 ms. Allocated memory is still 302.0 MB. Free memory was 274.7 MB in the beginning and 272.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-16 15:08:01,056 INFO L168 Benchmark]: RCFGBuilder took 658.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.6 MB in the beginning and 242.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-02-16 15:08:01,057 INFO L168 Benchmark]: TraceAbstraction took 1229.88 ms. Allocated memory is still 302.0 MB. Free memory was 242.2 MB in the beginning and 183.5 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.0 GB. [2021-02-16 15:08:01,061 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 302.0 MB. Free memory was 273.2 MB in the beginning and 273.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 664.04 ms. Allocated memory is still 302.0 MB. Free memory was 275.0 MB in the beginning and 276.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.74 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 274.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.73 ms. Allocated memory is still 302.0 MB. Free memory was 274.7 MB in the beginning and 272.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 658.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.6 MB in the beginning and 242.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1229.88 ms. Allocated memory is still 302.0 MB. Free memory was 242.2 MB in the beginning and 183.5 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 738]: 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, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 92 SDslu, 244 SDs, 0 SdLazy, 50 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 4185 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...