/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/15_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:10:53,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:10:53,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:10:53,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:10:53,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:10:53,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:10:53,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:10:53,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:10:53,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:10:53,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:10:53,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:10:53,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:10:53,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:10:53,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:10:53,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:10:53,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:10:53,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:10:53,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:10:53,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:10:53,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:10:53,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:10:53,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:10:53,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:10:53,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:10:53,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:10:53,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:10:53,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:10:53,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:10:53,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:10:53,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:10:53,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:10:53,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:10:53,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:10:53,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:10:53,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:10:53,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:10:53,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:10:53,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:10:53,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:10:53,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:10:53,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:10:53,260 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:10:53,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:10:53,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:10:53,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:10:53,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:10:53,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:10:53,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:10:53,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:10:53,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:10:53,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:10:53,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:10:53,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:10:53,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:10:53,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:10:53,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:10:53,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:10:53,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:10:53,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:10:53,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:10:53,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:10:53,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:10:53,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:10:53,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:10:53,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:10:53,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:10:53,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:10:53,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:10:53,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:10:53,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:10:53,697 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:10:53,698 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:10:53,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-11-09 12:10:53,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c331b011/38a113c06a7b42c9a988fea039644955/FLAG236e692dd [2020-11-09 12:10:54,556 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:10:54,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/15_dekker.i [2020-11-09 12:10:54,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c331b011/38a113c06a7b42c9a988fea039644955/FLAG236e692dd [2020-11-09 12:10:54,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c331b011/38a113c06a7b42c9a988fea039644955 [2020-11-09 12:10:54,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:10:54,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:10:54,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:10:54,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:10:54,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:10:54,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:10:54" (1/1) ... [2020-11-09 12:10:54,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71de8026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:54, skipping insertion in model container [2020-11-09 12:10:54,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:10:54" (1/1) ... [2020-11-09 12:10:54,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:10:54,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:10:55,047 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-09 12:10:55,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:10:55,305 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:10:55,323 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-11-09 12:10:55,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:10:55,463 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:10:55,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55 WrapperNode [2020-11-09 12:10:55,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:10:55,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:10:55,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:10:55,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:10:55,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (1/1) ... [2020-11-09 12:10:55,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (1/1) ... [2020-11-09 12:10:55,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:10:55,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:10:55,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:10:55,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:10:55,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (1/1) ... [2020-11-09 12:10:55,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (1/1) ... [2020-11-09 12:10:55,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (1/1) ... [2020-11-09 12:10:55,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (1/1) ... [2020-11-09 12:10:55,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (1/1) ... [2020-11-09 12:10:55,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (1/1) ... [2020-11-09 12:10:55,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (1/1) ... [2020-11-09 12:10:55,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:10:55,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:10:55,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:10:55,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:10:55,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (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 [2020-11-09 12:10:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-11-09 12:10:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-11-09 12:10:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:10:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:10:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:10:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:10:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:10:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:10:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:10:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:10:55,634 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:10:56,009 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:10:56,009 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-09 12:10:56,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:10:56 BoogieIcfgContainer [2020-11-09 12:10:56,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:10:56,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:10:56,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:10:56,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:10:56,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:10:54" (1/3) ... [2020-11-09 12:10:56,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581a4778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:10:56, skipping insertion in model container [2020-11-09 12:10:56,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:10:55" (2/3) ... [2020-11-09 12:10:56,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581a4778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:10:56, skipping insertion in model container [2020-11-09 12:10:56,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:10:56" (3/3) ... [2020-11-09 12:10:56,021 INFO L111 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2020-11-09 12:10:56,038 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:10:56,038 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:10:56,042 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-09 12:10:56,043 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:10:56,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,079 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,081 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:10:56,100 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:10:56,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:10:56,151 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:10:56,152 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:10:56,152 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:10:56,152 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:10:56,152 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:10:56,152 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:10:56,152 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:10:56,152 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:10:56,166 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:10:56,169 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 85 transitions, 175 flow [2020-11-09 12:10:56,172 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 85 transitions, 175 flow [2020-11-09 12:10:56,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 85 transitions, 175 flow [2020-11-09 12:10:56,224 INFO L129 PetriNetUnfolder]: 14/84 cut-off events. [2020-11-09 12:10:56,225 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:10:56,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 14/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2020-11-09 12:10:56,235 INFO L116 LiptonReduction]: Number of co-enabled transitions 2262 [2020-11-09 12:10:58,224 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-11-09 12:10:58,988 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-11-09 12:10:59,270 WARN L194 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-11-09 12:10:59,909 INFO L131 LiptonReduction]: Checked pairs total: 4824 [2020-11-09 12:10:59,909 INFO L133 LiptonReduction]: Total number of compositions: 85 [2020-11-09 12:10:59,917 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 31 transitions, 67 flow [2020-11-09 12:10:59,932 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 123 states. [2020-11-09 12:10:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-11-09 12:10:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 12:10:59,941 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:10:59,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 12:10:59,942 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:10:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:10:59,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1924425874, now seen corresponding path program 1 times [2020-11-09 12:10:59,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:10:59,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999698019] [2020-11-09 12:10:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:00,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999698019] [2020-11-09 12:11:00,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:00,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:11:00,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778502783] [2020-11-09 12:11:00,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:11:00,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:00,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:11:00,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:00,260 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-11-09 12:11:00,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:00,309 INFO L93 Difference]: Finished difference Result 137 states and 294 transitions. [2020-11-09 12:11:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:11:00,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-09 12:11:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:00,324 INFO L225 Difference]: With dead ends: 137 [2020-11-09 12:11:00,324 INFO L226 Difference]: Without dead ends: 98 [2020-11-09 12:11:00,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-09 12:11:00,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-11-09 12:11:00,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-09 12:11:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 210 transitions. [2020-11-09 12:11:00,379 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 210 transitions. Word has length 6 [2020-11-09 12:11:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:00,380 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 210 transitions. [2020-11-09 12:11:00,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:11:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 210 transitions. [2020-11-09 12:11:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 12:11:00,381 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:00,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 12:11:00,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:11:00,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:00,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:00,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1926047114, now seen corresponding path program 1 times [2020-11-09 12:11:00,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:00,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982388668] [2020-11-09 12:11:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:00,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982388668] [2020-11-09 12:11:00,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:00,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:11:00,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933057884] [2020-11-09 12:11:00,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:11:00,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:00,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:11:00,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:00,455 INFO L87 Difference]: Start difference. First operand 92 states and 210 transitions. Second operand 3 states. [2020-11-09 12:11:00,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:00,489 INFO L93 Difference]: Finished difference Result 87 states and 193 transitions. [2020-11-09 12:11:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:11:00,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-09 12:11:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:00,492 INFO L225 Difference]: With dead ends: 87 [2020-11-09 12:11:00,492 INFO L226 Difference]: Without dead ends: 66 [2020-11-09 12:11:00,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:11:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-09 12:11:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-09 12:11:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-09 12:11:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 146 transitions. [2020-11-09 12:11:00,513 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 146 transitions. Word has length 6 [2020-11-09 12:11:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:00,513 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 146 transitions. [2020-11-09 12:11:00,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:11:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 146 transitions. [2020-11-09 12:11:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:11:00,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:00,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:00,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:11:00,517 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:00,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1365740041, now seen corresponding path program 1 times [2020-11-09 12:11:00,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:00,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514383507] [2020-11-09 12:11:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:00,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514383507] [2020-11-09 12:11:00,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:00,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:11:00,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34651660] [2020-11-09 12:11:00,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:11:00,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:00,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:11:00,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:11:00,594 INFO L87 Difference]: Start difference. First operand 66 states and 146 transitions. Second operand 4 states. [2020-11-09 12:11:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:00,638 INFO L93 Difference]: Finished difference Result 90 states and 214 transitions. [2020-11-09 12:11:00,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:11:00,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:11:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:00,640 INFO L225 Difference]: With dead ends: 90 [2020-11-09 12:11:00,640 INFO L226 Difference]: Without dead ends: 64 [2020-11-09 12:11:00,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:11:00,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-09 12:11:00,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-11-09 12:11:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-09 12:11:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 139 transitions. [2020-11-09 12:11:00,652 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 139 transitions. Word has length 9 [2020-11-09 12:11:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:00,652 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 139 transitions. [2020-11-09 12:11:00,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:11:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 139 transitions. [2020-11-09 12:11:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:11:00,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:00,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:00,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:11:00,654 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:00,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:00,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1926747191, now seen corresponding path program 2 times [2020-11-09 12:11:00,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:00,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650545724] [2020-11-09 12:11:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:00,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650545724] [2020-11-09 12:11:00,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:00,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:11:00,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152523877] [2020-11-09 12:11:00,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:11:00,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:00,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:11:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:11:00,764 INFO L87 Difference]: Start difference. First operand 64 states and 139 transitions. Second operand 4 states. [2020-11-09 12:11:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:00,834 INFO L93 Difference]: Finished difference Result 88 states and 205 transitions. [2020-11-09 12:11:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:11:00,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:11:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:00,835 INFO L225 Difference]: With dead ends: 88 [2020-11-09 12:11:00,836 INFO L226 Difference]: Without dead ends: 61 [2020-11-09 12:11:00,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:11:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-09 12:11:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-09 12:11:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-09 12:11:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 130 transitions. [2020-11-09 12:11:00,844 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 130 transitions. Word has length 9 [2020-11-09 12:11:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:00,844 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 130 transitions. [2020-11-09 12:11:00,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:11:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 130 transitions. [2020-11-09 12:11:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:11:00,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:00,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:00,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:11:00,846 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:00,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:00,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1109849445, now seen corresponding path program 1 times [2020-11-09 12:11:00,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:00,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716306078] [2020-11-09 12:11:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:00,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716306078] [2020-11-09 12:11:00,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:00,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:11:00,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531650543] [2020-11-09 12:11:00,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:11:00,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:00,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:11:00,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:11:00,884 INFO L87 Difference]: Start difference. First operand 61 states and 130 transitions. Second operand 4 states. [2020-11-09 12:11:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:00,919 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-11-09 12:11:00,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:11:00,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:11:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:00,921 INFO L225 Difference]: With dead ends: 40 [2020-11-09 12:11:00,921 INFO L226 Difference]: Without dead ends: 37 [2020-11-09 12:11:00,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:11:00,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-09 12:11:00,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-09 12:11:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-09 12:11:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2020-11-09 12:11:00,926 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 13 [2020-11-09 12:11:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:00,926 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2020-11-09 12:11:00,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:11:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2020-11-09 12:11:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:11:00,927 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:11:00,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:11:00,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:11:00,928 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:11:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:11:00,929 INFO L82 PathProgramCache]: Analyzing trace with hash 448715690, now seen corresponding path program 1 times [2020-11-09 12:11:00,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:11:00,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388197766] [2020-11-09 12:11:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:11:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:11:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:11:00,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388197766] [2020-11-09 12:11:00,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:11:00,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:11:00,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300469424] [2020-11-09 12:11:00,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:11:00,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:11:00,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:11:00,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:11:00,964 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand 4 states. [2020-11-09 12:11:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:11:00,978 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-11-09 12:11:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:11:00,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:11:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:11:00,979 INFO L225 Difference]: With dead ends: 6 [2020-11-09 12:11:00,979 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:11:00,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:11:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:11:00,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:11:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:11:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:11:00,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-09 12:11:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:11:00,981 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:11:00,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:11:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:11:00,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:11:00,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:11:00,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:11:00 BasicIcfg [2020-11-09 12:11:00,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:11:00,988 INFO L168 Benchmark]: Toolchain (without parser) took 6199.89 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 125.3 MB in the beginning and 65.1 MB in the end (delta: 60.3 MB). Peak memory consumption was 101.2 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:00,988 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:11:00,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.51 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 128.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:00,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 126.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:00,991 INFO L168 Benchmark]: Boogie Preprocessor took 32.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 125.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:00,992 INFO L168 Benchmark]: RCFGBuilder took 461.34 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 103.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:00,993 INFO L168 Benchmark]: TraceAbstraction took 4972.03 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 103.1 MB in the beginning and 65.1 MB in the end (delta: 38.0 MB). Peak memory consumption was 77.3 MB. Max. memory is 8.0 GB. [2020-11-09 12:11:00,997 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 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 670.51 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 128.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 126.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 125.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 461.34 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 103.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4972.03 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 103.1 MB in the beginning and 65.1 MB in the end (delta: 38.0 MB). Peak memory consumption was 77.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1650 VarBasedMoverChecksPositive, 113 VarBasedMoverChecksNegative, 73 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 175 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 75 PlacesBefore, 27 PlacesAfterwards, 85 TransitionsBefore, 31 TransitionsAfterwards, 2262 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 6 ChoiceCompositions, 85 TotalNumberOfCompositions, 4824 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 190 SDtfs, 140 SDslu, 145 SDs, 0 SdLazy, 64 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred 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, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 846 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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...