/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:19:53,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:19:53,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:19:53,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:19:53,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:19:53,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:19:53,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:19:53,924 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 [2021-04-15 01:19:53,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:19:53,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:19:53,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:19:53,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:19:53,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:19:53,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:19:53,961 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:19:53,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:19:53,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:19:53,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:19:53,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:19:53,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:19:53,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:19:53,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:19:53,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:19:53,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:19:53,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:19:53,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:19:53,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:19:53,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:19:53,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:19:53,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:19:53,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:19:53,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:19:53,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:19:53,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:19:53,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:19:53,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:19:53,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:19:53,965 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:19:53,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:19:53,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:19:54,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:19:54,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:19:54,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:19:54,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:19:54,327 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:19:54,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2021-04-15 01:19:54,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f95ff4d/93fc207518b8414ab9dab3951091e34b/FLAG0607ce53b [2021-04-15 01:19:54,904 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:19:54,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2021-04-15 01:19:54,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f95ff4d/93fc207518b8414ab9dab3951091e34b/FLAG0607ce53b [2021-04-15 01:19:55,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f95ff4d/93fc207518b8414ab9dab3951091e34b [2021-04-15 01:19:55,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:19:55,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:19:55,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:19:55,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:19:55,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:19:55,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1e471a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55, skipping insertion in model container [2021-04-15 01:19:55,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:19:55,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:19:55,313 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-04-15 01:19:55,511 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-divine/condvar.i[30458,30471] [2021-04-15 01:19:55,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:19:55,532 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:19:55,544 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-04-15 01:19:55,566 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-divine/condvar.i[30458,30471] [2021-04-15 01:19:55,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:19:55,641 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:19:55,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55 WrapperNode [2021-04-15 01:19:55,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:19:55,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:19:55,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:19:55,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:19:55,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:19:55,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:19:55,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:19:55,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:19:55,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (1/1) ... [2021-04-15 01:19:55,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:19:55,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:19:55,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:19:55,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:19:55,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (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 [2021-04-15 01:19:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-15 01:19:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 01:19:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-04-15 01:19:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:19:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 01:19:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 01:19:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-04-15 01:19:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-04-15 01:19:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:19:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:19:55,781 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:19:56,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:19:56,190 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-04-15 01:19:56,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:19:56 BoogieIcfgContainer [2021-04-15 01:19:56,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:19:56,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:19:56,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:19:56,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:19:56,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:19:55" (1/3) ... [2021-04-15 01:19:56,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3071abc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:19:56, skipping insertion in model container [2021-04-15 01:19:56,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:19:55" (2/3) ... [2021-04-15 01:19:56,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3071abc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:19:56, skipping insertion in model container [2021-04-15 01:19:56,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:19:56" (3/3) ... [2021-04-15 01:19:56,198 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2021-04-15 01:19:56,203 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:19:56,203 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:19:56,207 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:19:56,208 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:19:56,234 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,235 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,235 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,235 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,235 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,235 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,235 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,235 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,236 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,236 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,236 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,236 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,237 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,237 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,237 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,237 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,237 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,237 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,238 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,238 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,239 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,239 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,240 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,240 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,240 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,241 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:19:56,246 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-04-15 01:19:56,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-15 01:19:56,286 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:19:56,286 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:19:56,286 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:19:56,286 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:19:56,286 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:19:56,287 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:19:56,287 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:19:56,287 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:19:56,297 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 69 transitions, 146 flow [2021-04-15 01:19:56,316 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 181 states, 179 states have (on average 1.9832402234636872) internal successors, (355), 180 states have internal predecessors, (355), 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) [2021-04-15 01:19:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 179 states have (on average 1.9832402234636872) internal successors, (355), 180 states have internal predecessors, (355), 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) [2021-04-15 01:19:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-15 01:19:56,335 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:19:56,336 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:19:56,336 INFO L428 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-15 01:19:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:19:56,341 INFO L82 PathProgramCache]: Analyzing trace with hash -231567590, now seen corresponding path program 1 times [2021-04-15 01:19:56,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:19:56,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470733996] [2021-04-15 01:19:56,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:19:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:19:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:19:56,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470733996] [2021-04-15 01:19:56,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:19:56,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-15 01:19:56,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141791621] [2021-04-15 01:19:56,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-04-15 01:19:56,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:19:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-04-15 01:19:56,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-04-15 01:19:56,582 INFO L87 Difference]: Start difference. First operand has 181 states, 179 states have (on average 1.9832402234636872) internal successors, (355), 180 states have internal predecessors, (355), 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 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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) [2021-04-15 01:19:56,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:19:56,598 INFO L93 Difference]: Finished difference Result 181 states and 321 transitions. [2021-04-15 01:19:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-04-15 01:19:56,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2021-04-15 01:19:56,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:19:56,608 INFO L225 Difference]: With dead ends: 181 [2021-04-15 01:19:56,608 INFO L226 Difference]: Without dead ends: 135 [2021-04-15 01:19:56,609 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-04-15 01:19:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-04-15 01:19:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-04-15 01:19:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.7537313432835822) internal successors, (235), 134 states have internal predecessors, (235), 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) [2021-04-15 01:19:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 235 transitions. [2021-04-15 01:19:56,645 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 235 transitions. Word has length 41 [2021-04-15 01:19:56,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:19:56,645 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 235 transitions. [2021-04-15 01:19:56,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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) [2021-04-15 01:19:56,645 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 235 transitions. [2021-04-15 01:19:56,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-15 01:19:56,646 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:19:56,647 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:19:56,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:19:56,647 INFO L428 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-15 01:19:56,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:19:56,648 INFO L82 PathProgramCache]: Analyzing trace with hash -231566629, now seen corresponding path program 1 times [2021-04-15 01:19:56,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:19:56,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514791632] [2021-04-15 01:19:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:19:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:19:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:19:56,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514791632] [2021-04-15 01:19:56,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:19:56,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 01:19:56,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833269463] [2021-04-15 01:19:56,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-15 01:19:56,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:19:56,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-15 01:19:56,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:19:56,716 INFO L87 Difference]: Start difference. First operand 135 states and 235 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-04-15 01:19:56,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:19:56,727 INFO L93 Difference]: Finished difference Result 111 states and 184 transitions. [2021-04-15 01:19:56,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-15 01:19:56,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-04-15 01:19:56,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:19:56,729 INFO L225 Difference]: With dead ends: 111 [2021-04-15 01:19:56,729 INFO L226 Difference]: Without dead ends: 111 [2021-04-15 01:19:56,730 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:19:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-04-15 01:19:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-04-15 01:19:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.6727272727272726) internal successors, (184), 110 states have internal predecessors, (184), 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) [2021-04-15 01:19:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 184 transitions. [2021-04-15 01:19:56,739 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 184 transitions. Word has length 41 [2021-04-15 01:19:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:19:56,739 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 184 transitions. [2021-04-15 01:19:56,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-04-15 01:19:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 184 transitions. [2021-04-15 01:19:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-04-15 01:19:56,741 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:19:56,741 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:19:56,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:19:56,741 INFO L428 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-15 01:19:56,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:19:56,742 INFO L82 PathProgramCache]: Analyzing trace with hash -151243157, now seen corresponding path program 1 times [2021-04-15 01:19:56,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:19:56,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056308659] [2021-04-15 01:19:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:19:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:19:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:19:56,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056308659] [2021-04-15 01:19:56,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:19:56,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-15 01:19:56,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863857539] [2021-04-15 01:19:56,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-15 01:19:56,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:19:56,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-15 01:19:56,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:19:56,812 INFO L87 Difference]: Start difference. First operand 111 states and 184 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-04-15 01:19:56,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:19:56,833 INFO L93 Difference]: Finished difference Result 139 states and 240 transitions. [2021-04-15 01:19:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-15 01:19:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-04-15 01:19:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:19:56,840 INFO L225 Difference]: With dead ends: 139 [2021-04-15 01:19:56,840 INFO L226 Difference]: Without dead ends: 139 [2021-04-15 01:19:56,840 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-15 01:19:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-04-15 01:19:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 118. [2021-04-15 01:19:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.6923076923076923) internal successors, (198), 117 states have internal predecessors, (198), 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) [2021-04-15 01:19:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 198 transitions. [2021-04-15 01:19:56,848 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 198 transitions. Word has length 45 [2021-04-15 01:19:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:19:56,849 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 198 transitions. [2021-04-15 01:19:56,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-04-15 01:19:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 198 transitions. [2021-04-15 01:19:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-04-15 01:19:56,850 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:19:56,850 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:19:56,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 01:19:56,851 INFO L428 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-15 01:19:56,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:19:56,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1777750812, now seen corresponding path program 1 times [2021-04-15 01:19:56,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:19:56,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528491271] [2021-04-15 01:19:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:19:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:19:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:19:56,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528491271] [2021-04-15 01:19:56,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604181726] [2021-04-15 01:19:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 01:19:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:19:57,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-04-15 01:19:57,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 01:19:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:19:57,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 01:19:57,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-04-15 01:19:57,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817143164] [2021-04-15 01:19:57,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:19:57,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:19:57,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:19:57,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:19:57,282 INFO L87 Difference]: Start difference. First operand 118 states and 198 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-04-15 01:19:57,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:19:57,341 INFO L93 Difference]: Finished difference Result 174 states and 310 transitions. [2021-04-15 01:19:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 01:19:57,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 50 [2021-04-15 01:19:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:19:57,345 INFO L225 Difference]: With dead ends: 174 [2021-04-15 01:19:57,345 INFO L226 Difference]: Without dead ends: 174 [2021-04-15 01:19:57,345 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-04-15 01:19:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-04-15 01:19:57,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 153. [2021-04-15 01:19:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.763157894736842) internal successors, (268), 152 states have internal predecessors, (268), 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) [2021-04-15 01:19:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 268 transitions. [2021-04-15 01:19:57,367 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 268 transitions. Word has length 50 [2021-04-15 01:19:57,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:19:57,367 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 268 transitions. [2021-04-15 01:19:57,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-04-15 01:19:57,368 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 268 transitions. [2021-04-15 01:19:57,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-04-15 01:19:57,369 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:19:57,370 INFO L551 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:19:57,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 01:19:57,581 INFO L428 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-15 01:19:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:19:57,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2123343349, now seen corresponding path program 2 times [2021-04-15 01:19:57,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:19:57,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12515041] [2021-04-15 01:19:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:19:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:19:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:19:57,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12515041] [2021-04-15 01:19:57,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160207010] [2021-04-15 01:19:57,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 01:19:57,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-04-15 01:19:57,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 01:19:57,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-04-15 01:19:57,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 01:19:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:19:57,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 01:19:57,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-04-15 01:19:57,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630176566] [2021-04-15 01:19:57,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 01:19:57,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:19:57,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 01:19:57,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-04-15 01:19:57,864 INFO L87 Difference]: Start difference. First operand 153 states and 268 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:19:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:19:57,930 INFO L93 Difference]: Finished difference Result 209 states and 380 transitions. [2021-04-15 01:19:57,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:19:57,931 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-04-15 01:19:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:19:57,933 INFO L225 Difference]: With dead ends: 209 [2021-04-15 01:19:57,934 INFO L226 Difference]: Without dead ends: 209 [2021-04-15 01:19:57,940 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-04-15 01:19:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-04-15 01:19:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 188. [2021-04-15 01:19:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.8074866310160427) internal successors, (338), 187 states have internal predecessors, (338), 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) [2021-04-15 01:19:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 338 transitions. [2021-04-15 01:19:57,955 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 338 transitions. Word has length 55 [2021-04-15 01:19:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:19:57,956 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 338 transitions. [2021-04-15 01:19:57,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:19:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 338 transitions. [2021-04-15 01:19:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-04-15 01:19:57,958 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:19:57,958 INFO L551 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:19:58,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 01:19:58,177 INFO L428 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-04-15 01:19:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:19:58,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1052429636, now seen corresponding path program 3 times [2021-04-15 01:19:58,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:19:58,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583201936] [2021-04-15 01:19:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:19:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:19:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:19:58,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583201936] [2021-04-15 01:19:58,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853055071] [2021-04-15 01:19:58,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 01:19:58,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-04-15 01:19:58,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-04-15 01:19:58,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-04-15 01:19:58,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 01:19:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-04-15 01:19:58,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-04-15 01:19:58,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-04-15 01:19:58,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344889468] [2021-04-15 01:19:58,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:19:58,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:19:58,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:19:58,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-04-15 01:19:58,514 INFO L87 Difference]: Start difference. First operand 188 states and 338 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-04-15 01:19:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:19:58,602 INFO L93 Difference]: Finished difference Result 184 states and 332 transitions. [2021-04-15 01:19:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:19:58,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-04-15 01:19:58,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:19:58,603 INFO L225 Difference]: With dead ends: 184 [2021-04-15 01:19:58,603 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:19:58,603 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 153.0ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-04-15 01:19:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:19:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:19:58,604 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) [2021-04-15 01:19:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:19:58,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-04-15 01:19:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:19:58,604 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:19:58,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-04-15 01:19:58,605 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:19:58,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:19:58,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 01:19:58,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:19:58 BasicIcfg [2021-04-15 01:19:58,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:19:58,822 INFO L168 Benchmark]: Toolchain (without parser) took 3644.59 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 235.8 MB in the beginning and 412.2 MB in the end (delta: -176.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:19:58,822 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:19:58,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.52 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 235.1 MB in the beginning and 345.6 MB in the end (delta: -110.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-04-15 01:19:58,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.26 ms. Allocated memory is still 381.7 MB. Free memory was 345.6 MB in the beginning and 343.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:19:58,823 INFO L168 Benchmark]: Boogie Preprocessor took 19.82 ms. Allocated memory is still 381.7 MB. Free memory was 343.6 MB in the beginning and 342.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:19:58,823 INFO L168 Benchmark]: RCFGBuilder took 486.05 ms. Allocated memory is still 381.7 MB. Free memory was 342.2 MB in the beginning and 358.1 MB in the end (delta: -15.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.0 GB. [2021-04-15 01:19:58,823 INFO L168 Benchmark]: TraceAbstraction took 2628.15 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 358.1 MB in the beginning and 412.2 MB in the end (delta: -54.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:19:58,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 463.52 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 235.1 MB in the beginning and 345.6 MB in the end (delta: -110.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.26 ms. Allocated memory is still 381.7 MB. Free memory was 345.6 MB in the beginning and 343.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.82 ms. Allocated memory is still 381.7 MB. Free memory was 343.6 MB in the beginning and 342.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 486.05 ms. Allocated memory is still 381.7 MB. Free memory was 342.2 MB in the beginning and 358.1 MB in the end (delta: -15.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2628.15 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 358.1 MB in the beginning and 412.2 MB in the end (delta: -54.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 706]: 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, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2534.3ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 26.1ms, AutomataDifference: 317.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 384 SDtfs, 193 SDslu, 854 SDs, 0 SdLazy, 117 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 260.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 78.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 63 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 57.9ms SsaConstructionTime, 240.4ms SatisfiabilityAnalysisTime, 885.9ms InterpolantComputationTime, 457 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 448 ConstructedInterpolants, 0 QuantifiedInterpolants, 616 SizeOfPredicates, 10 NumberOfNonLiveVariables, 406 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 18/52 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...