/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 00:27:37,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 00:27:37,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 00:27:37,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 00:27:37,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 00:27:37,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 00:27:37,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 00:27:37,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 00:27:37,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 00:27:37,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 00:27:37,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 00:27:37,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 00:27:37,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 00:27:37,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 00:27:37,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 00:27:37,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 00:27:37,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 00:27:37,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 00:27:37,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 00:27:37,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 00:27:37,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 00:27:37,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 00:27:37,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 00:27:37,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 00:27:37,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 00:27:37,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 00:27:37,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 00:27:37,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 00:27:37,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 00:27:37,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 00:27:37,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 00:27:37,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 00:27:37,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 00:27:37,302 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 00:27:37,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 00:27:37,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 00:27:37,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 00:27:37,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 00:27:37,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 00:27:37,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 00:27:37,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 00:27:37,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 00:27:37,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 00:27:37,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 00:27:37,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 00:27:37,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 00:27:37,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 00:27:37,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 00:27:37,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 00:27:37,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 00:27:37,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:27:37,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 00:27:37,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 00:27:37,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 00:27:37,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 00:27:37,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 00:27:37,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 00:27:37,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 00:27:37,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 00:27:37,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 00:27:37,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 00:27:37,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 00:27:37,607 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 00:27:37,608 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-16 00:27:37,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdea1fae6/2969e989ad0e4a70a20ea462ef6a5191/FLAG77216de4f [2020-10-16 00:27:38,129 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 00:27:38,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-16 00:27:38,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdea1fae6/2969e989ad0e4a70a20ea462ef6a5191/FLAG77216de4f [2020-10-16 00:27:38,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdea1fae6/2969e989ad0e4a70a20ea462ef6a5191 [2020-10-16 00:27:38,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 00:27:38,438 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 00:27:38,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 00:27:38,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 00:27:38,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 00:27:38,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:27:38" (1/1) ... [2020-10-16 00:27:38,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5529605f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:38, skipping insertion in model container [2020-10-16 00:27:38,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:27:38" (1/1) ... [2020-10-16 00:27:38,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 00:27:38,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 00:27:38,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:27:38,997 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 00:27:39,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:27:39,118 INFO L208 MainTranslator]: Completed translation [2020-10-16 00:27:39,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39 WrapperNode [2020-10-16 00:27:39,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 00:27:39,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 00:27:39,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 00:27:39,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 00:27:39,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (1/1) ... [2020-10-16 00:27:39,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (1/1) ... [2020-10-16 00:27:39,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 00:27:39,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 00:27:39,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 00:27:39,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 00:27:39,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (1/1) ... [2020-10-16 00:27:39,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (1/1) ... [2020-10-16 00:27:39,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (1/1) ... [2020-10-16 00:27:39,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (1/1) ... [2020-10-16 00:27:39,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (1/1) ... [2020-10-16 00:27:39,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (1/1) ... [2020-10-16 00:27:39,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (1/1) ... [2020-10-16 00:27:39,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 00:27:39,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 00:27:39,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 00:27:39,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 00:27:39,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (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 [2020-10-16 00:27:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 00:27:39,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 00:27:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 00:27:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 00:27:39,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 00:27:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 00:27:39,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 00:27:39,274 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 00:27:39,843 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 00:27:39,843 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 00:27:39,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:27:39 BoogieIcfgContainer [2020-10-16 00:27:39,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 00:27:39,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 00:27:39,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 00:27:39,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 00:27:39,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:27:38" (1/3) ... [2020-10-16 00:27:39,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feb92d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:27:39, skipping insertion in model container [2020-10-16 00:27:39,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:27:39" (2/3) ... [2020-10-16 00:27:39,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feb92d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:27:39, skipping insertion in model container [2020-10-16 00:27:39,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:27:39" (3/3) ... [2020-10-16 00:27:39,855 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-10-16 00:27:39,867 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 00:27:39,875 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 00:27:39,876 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 00:27:39,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,900 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,900 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,901 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,901 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,902 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,902 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,903 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,903 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,904 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,904 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,908 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,908 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,909 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,909 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,909 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,910 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,910 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,911 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:27:39,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 00:27:39,953 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 00:27:39,953 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 00:27:39,953 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 00:27:39,953 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 00:27:39,954 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 00:27:39,954 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 00:27:39,954 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 00:27:39,954 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 00:27:39,965 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 91 flow [2020-10-16 00:27:39,996 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-10-16 00:27:39,996 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:40,000 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-10-16 00:27:40,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 43 transitions, 91 flow [2020-10-16 00:27:40,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 42 transitions, 87 flow [2020-10-16 00:27:40,009 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 00:27:40,011 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 42 transitions, 87 flow [2020-10-16 00:27:40,014 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 42 transitions, 87 flow [2020-10-16 00:27:40,015 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 87 flow [2020-10-16 00:27:40,027 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-10-16 00:27:40,028 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:40,028 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-10-16 00:27:40,030 INFO L117 LiptonReduction]: Number of co-enabled transitions 378 [2020-10-16 00:27:41,026 INFO L132 LiptonReduction]: Checked pairs total: 818 [2020-10-16 00:27:41,026 INFO L134 LiptonReduction]: Total number of compositions: 32 [2020-10-16 00:27:41,029 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1022 [2020-10-16 00:27:41,035 INFO L129 PetriNetUnfolder]: 1/7 cut-off events. [2020-10-16 00:27:41,035 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:41,036 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:41,036 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 00:27:41,037 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:41,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:41,043 INFO L82 PathProgramCache]: Analyzing trace with hash 10250802, now seen corresponding path program 1 times [2020-10-16 00:27:41,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:41,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290353938] [2020-10-16 00:27:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:41,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290353938] [2020-10-16 00:27:41,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:41,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 00:27:41,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583804358] [2020-10-16 00:27:41,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:27:41,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:41,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:27:41,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:27:41,238 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2020-10-16 00:27:41,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 29 flow. Second operand 3 states. [2020-10-16 00:27:41,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:41,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2020-10-16 00:27:41,242 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:41,270 INFO L129 PetriNetUnfolder]: 2/15 cut-off events. [2020-10-16 00:27:41,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:41,270 INFO L80 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 15 events. 2/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 3/17 useless extension candidates. Maximal degree in co-relation 18. Up to 5 conditions per place. [2020-10-16 00:27:41,272 INFO L132 encePairwiseOnDemand]: 71/75 looper letters, 2 selfloop transitions, 2 changer transitions 2/13 dead transitions. [2020-10-16 00:27:41,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 39 flow [2020-10-16 00:27:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:27:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:27:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2020-10-16 00:27:41,287 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2020-10-16 00:27:41,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2020-10-16 00:27:41,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2020-10-16 00:27:41,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:41,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2020-10-16 00:27:41,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:27:41,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:27:41,301 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:27:41,304 INFO L185 Difference]: Start difference. First operand has 16 places, 13 transitions, 29 flow. Second operand 3 states and 190 transitions. [2020-10-16 00:27:41,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 39 flow [2020-10-16 00:27:41,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 13 transitions, 38 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 00:27:41,309 INFO L241 Difference]: Finished difference. Result has 16 places, 10 transitions, 26 flow [2020-10-16 00:27:41,312 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2020-10-16 00:27:41,313 INFO L342 CegarLoopForPetriNet]: 16 programPoint places, 0 predicate places. [2020-10-16 00:27:41,313 INFO L481 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 26 flow [2020-10-16 00:27:41,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:27:41,313 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:41,314 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 00:27:41,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 00:27:41,314 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:41,315 INFO L82 PathProgramCache]: Analyzing trace with hash 317781255, now seen corresponding path program 1 times [2020-10-16 00:27:41,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:41,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943233845] [2020-10-16 00:27:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:41,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943233845] [2020-10-16 00:27:41,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:41,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:27:41,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251613183] [2020-10-16 00:27:41,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:27:41,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:41,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:27:41,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:27:41,375 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2020-10-16 00:27:41,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 26 flow. Second operand 3 states. [2020-10-16 00:27:41,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:41,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2020-10-16 00:27:41,376 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:41,386 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2020-10-16 00:27:41,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:27:41,386 INFO L80 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 16. Up to 4 conditions per place. [2020-10-16 00:27:41,387 INFO L132 encePairwiseOnDemand]: 71/75 looper letters, 2 selfloop transitions, 2 changer transitions 1/11 dead transitions. [2020-10-16 00:27:41,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 38 flow [2020-10-16 00:27:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:27:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:27:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2020-10-16 00:27:41,389 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.84 [2020-10-16 00:27:41,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2020-10-16 00:27:41,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2020-10-16 00:27:41,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:41,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2020-10-16 00:27:41,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:27:41,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:27:41,393 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:27:41,393 INFO L185 Difference]: Start difference. First operand has 16 places, 10 transitions, 26 flow. Second operand 3 states and 189 transitions. [2020-10-16 00:27:41,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 38 flow [2020-10-16 00:27:41,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 00:27:41,394 INFO L241 Difference]: Finished difference. Result has 16 places, 10 transitions, 34 flow [2020-10-16 00:27:41,394 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2020-10-16 00:27:41,395 INFO L342 CegarLoopForPetriNet]: 16 programPoint places, 0 predicate places. [2020-10-16 00:27:41,395 INFO L481 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 34 flow [2020-10-16 00:27:41,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:27:41,396 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:41,396 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:27:41,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 00:27:41,396 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:41,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:41,397 INFO L82 PathProgramCache]: Analyzing trace with hash 445216329, now seen corresponding path program 1 times [2020-10-16 00:27:41,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:41,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402989225] [2020-10-16 00:27:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:41,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402989225] [2020-10-16 00:27:41,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:41,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 00:27:41,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817777496] [2020-10-16 00:27:41,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 00:27:41,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:41,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 00:27:41,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 00:27:41,459 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2020-10-16 00:27:41,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 34 flow. Second operand 4 states. [2020-10-16 00:27:41,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:41,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2020-10-16 00:27:41,460 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:41,490 INFO L129 PetriNetUnfolder]: 3/16 cut-off events. [2020-10-16 00:27:41,490 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 00:27:41,490 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 3/16 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 34. Up to 5 conditions per place. [2020-10-16 00:27:41,491 INFO L132 encePairwiseOnDemand]: 69/75 looper letters, 2 selfloop transitions, 6 changer transitions 0/11 dead transitions. [2020-10-16 00:27:41,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 11 transitions, 54 flow [2020-10-16 00:27:41,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 00:27:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 00:27:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 264 transitions. [2020-10-16 00:27:41,494 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.704 [2020-10-16 00:27:41,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 264 transitions. [2020-10-16 00:27:41,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 264 transitions. [2020-10-16 00:27:41,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:41,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 264 transitions. [2020-10-16 00:27:41,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 00:27:41,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 00:27:41,497 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 00:27:41,497 INFO L185 Difference]: Start difference. First operand has 16 places, 10 transitions, 34 flow. Second operand 5 states and 264 transitions. [2020-10-16 00:27:41,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 11 transitions, 54 flow [2020-10-16 00:27:41,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 00:27:41,499 INFO L241 Difference]: Finished difference. Result has 18 places, 10 transitions, 42 flow [2020-10-16 00:27:41,499 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=42, PETRI_PLACES=18, PETRI_TRANSITIONS=10} [2020-10-16 00:27:41,499 INFO L342 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2020-10-16 00:27:41,499 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 42 flow [2020-10-16 00:27:41,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 00:27:41,500 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:27:41,500 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:27:41,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 00:27:41,500 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:27:41,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:27:41,501 INFO L82 PathProgramCache]: Analyzing trace with hash 764279846, now seen corresponding path program 1 times [2020-10-16 00:27:41,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:27:41,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57795648] [2020-10-16 00:27:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:27:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:27:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:27:41,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57795648] [2020-10-16 00:27:41,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:27:41,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:27:41,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247530482] [2020-10-16 00:27:41,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 00:27:41,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:27:41,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 00:27:41,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 00:27:41,568 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2020-10-16 00:27:41,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 10 transitions, 42 flow. Second operand 4 states. [2020-10-16 00:27:41,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:27:41,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2020-10-16 00:27:41,569 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:27:41,575 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2020-10-16 00:27:41,575 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 00:27:41,576 INFO L80 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 9 events. 1/9 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 15. Up to 3 conditions per place. [2020-10-16 00:27:41,576 INFO L132 encePairwiseOnDemand]: 72/75 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2020-10-16 00:27:41,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 9 transitions, 42 flow [2020-10-16 00:27:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 00:27:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 00:27:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2020-10-16 00:27:41,578 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8233333333333334 [2020-10-16 00:27:41,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 247 transitions. [2020-10-16 00:27:41,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 247 transitions. [2020-10-16 00:27:41,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:27:41,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 247 transitions. [2020-10-16 00:27:41,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 00:27:41,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 00:27:41,582 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 00:27:41,582 INFO L185 Difference]: Start difference. First operand has 18 places, 10 transitions, 42 flow. Second operand 4 states and 247 transitions. [2020-10-16 00:27:41,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 9 transitions, 42 flow [2020-10-16 00:27:41,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 31 flow, removed 1 selfloop flow, removed 4 redundant places. [2020-10-16 00:27:41,583 INFO L241 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2020-10-16 00:27:41,584 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2020-10-16 00:27:41,584 INFO L342 CegarLoopForPetriNet]: 16 programPoint places, 0 predicate places. [2020-10-16 00:27:41,584 INFO L481 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2020-10-16 00:27:41,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 00:27:41,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 00:27:41,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:27:41 BasicIcfg [2020-10-16 00:27:41,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:27:41,591 INFO L168 Benchmark]: Toolchain (without parser) took 3152.89 ms. Allocated memory was 251.7 MB in the beginning and 357.6 MB in the end (delta: 105.9 MB). Free memory was 206.6 MB in the beginning and 179.1 MB in the end (delta: 27.5 MB). Peak memory consumption was 133.4 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:41,592 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 00:27:41,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.66 ms. Allocated memory was 251.7 MB in the beginning and 316.7 MB in the end (delta: 65.0 MB). Free memory was 206.6 MB in the beginning and 272.4 MB in the end (delta: -65.8 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:41,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 316.7 MB. Free memory was 272.4 MB in the beginning and 269.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:41,595 INFO L168 Benchmark]: Boogie Preprocessor took 30.55 ms. Allocated memory is still 316.7 MB. Free memory was 269.9 MB in the beginning and 267.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:41,596 INFO L168 Benchmark]: RCFGBuilder took 644.27 ms. Allocated memory is still 316.7 MB. Free memory was 267.4 MB in the beginning and 224.9 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:41,596 INFO L168 Benchmark]: TraceAbstraction took 1741.69 ms. Allocated memory was 316.7 MB in the beginning and 357.6 MB in the end (delta: 40.9 MB). Free memory was 222.4 MB in the beginning and 179.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 84.2 MB. Max. memory is 14.2 GB. [2020-10-16 00:27:41,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 680.66 ms. Allocated memory was 251.7 MB in the beginning and 316.7 MB in the end (delta: 65.0 MB). Free memory was 206.6 MB in the beginning and 272.4 MB in the end (delta: -65.8 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.73 ms. Allocated memory is still 316.7 MB. Free memory was 272.4 MB in the beginning and 269.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.55 ms. Allocated memory is still 316.7 MB. Free memory was 269.9 MB in the beginning and 267.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 644.27 ms. Allocated memory is still 316.7 MB. Free memory was 267.4 MB in the beginning and 224.9 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1741.69 ms. Allocated memory was 316.7 MB in the beginning and 357.6 MB in the end (delta: 40.9 MB). Free memory was 222.4 MB in the beginning and 179.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 84.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 250 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 21 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 44 PlacesBefore, 16 PlacesAfterwards, 42 TransitionsBefore, 13 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 32 TotalNumberOfCompositions, 818 MoverChecksTotal - PositiveResult [Line: 696]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 710]: 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, 42 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 10 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 24 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...