/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-wmm/safe022_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:42:38,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:42:38,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:42:38,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:42:38,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:42:38,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:42:38,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:42:38,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:42:38,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:42:38,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:42:38,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:42:38,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:42:38,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:42:38,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:42:38,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:42:38,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:42:38,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:42:38,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:42:38,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:42:38,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:42:38,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:42:38,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:42:38,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:42:38,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:42:38,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:42:38,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:42:38,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:42:38,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:42:38,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:42:38,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:42:38,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:42:38,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:42:38,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:42:38,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:42:38,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:42:38,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:42:38,300 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 01:42:38,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:42:38,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:42:38,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:42:38,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:42:38,324 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:42:38,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:42:38,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:42:38,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:42:38,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:42:38,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:42:38,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:42:38,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:42:38,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:42:38,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:42:38,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:42:38,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:42:38,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:42:38,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:42:38,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:42:38,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:42:38,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:42:38,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:42:38,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:42:38,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:42:38,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:42:38,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:42:38,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:42:38,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:42:38,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:42:38,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:42:38,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:42:38,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:42:38,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:42:38,653 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:42:38,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2020-10-16 01:42:38,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acdff7b6e/32873a0065e2464cafcf039c5ef506ae/FLAG1ced4349e [2020-10-16 01:42:39,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:42:39,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2020-10-16 01:42:39,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acdff7b6e/32873a0065e2464cafcf039c5ef506ae/FLAG1ced4349e [2020-10-16 01:42:39,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acdff7b6e/32873a0065e2464cafcf039c5ef506ae [2020-10-16 01:42:39,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:42:39,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:42:39,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:42:39,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:42:39,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:42:39,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:42:39" (1/1) ... [2020-10-16 01:42:39,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0f4bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:39, skipping insertion in model container [2020-10-16 01:42:39,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:42:39" (1/1) ... [2020-10-16 01:42:39,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:42:39,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:42:40,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:42:40,064 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:42:40,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:42:40,238 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:42:40,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40 WrapperNode [2020-10-16 01:42:40,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:42:40,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:42:40,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:42:40,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:42:40,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (1/1) ... [2020-10-16 01:42:40,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (1/1) ... [2020-10-16 01:42:40,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:42:40,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:42:40,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:42:40,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:42:40,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (1/1) ... [2020-10-16 01:42:40,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (1/1) ... [2020-10-16 01:42:40,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (1/1) ... [2020-10-16 01:42:40,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (1/1) ... [2020-10-16 01:42:40,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (1/1) ... [2020-10-16 01:42:40,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (1/1) ... [2020-10-16 01:42:40,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (1/1) ... [2020-10-16 01:42:40,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:42:40,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:42:40,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:42:40,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:42:40,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (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 01:42:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:42:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:42:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:42:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:42:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:42:40,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:42:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:42:40,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:42:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:42:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:42:40,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:42:40,399 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 01:42:40,756 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:42:40,756 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:42:40,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:42:40 BoogieIcfgContainer [2020-10-16 01:42:40,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:42:40,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:42:40,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:42:40,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:42:40,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:42:39" (1/3) ... [2020-10-16 01:42:40,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219e4798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:42:40, skipping insertion in model container [2020-10-16 01:42:40,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:40" (2/3) ... [2020-10-16 01:42:40,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219e4798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:42:40, skipping insertion in model container [2020-10-16 01:42:40,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:42:40" (3/3) ... [2020-10-16 01:42:40,767 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2020-10-16 01:42:40,779 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:42:40,786 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:42:40,787 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:42:40,812 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,813 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,813 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,813 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,826 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:40,847 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 01:42:40,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:42:40,868 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:42:40,868 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:42:40,868 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:42:40,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:42:40,869 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:42:40,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:42:40,869 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:42:40,880 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 01:42:40,916 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-16 01:42:40,916 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:42:40,920 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 01:42:40,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 01:42:40,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 96 flow [2020-10-16 01:42:40,929 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:42:40,932 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 01:42:40,934 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 01:42:40,935 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 96 flow [2020-10-16 01:42:40,951 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2020-10-16 01:42:40,952 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:42:40,953 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 01:42:40,954 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 01:42:42,073 INFO L132 LiptonReduction]: Checked pairs total: 878 [2020-10-16 01:42:42,073 INFO L134 LiptonReduction]: Total number of compositions: 37 [2020-10-16 01:42:42,076 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1149 [2020-10-16 01:42:42,083 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2020-10-16 01:42:42,083 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:42:42,084 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:42,085 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 01:42:42,085 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:42,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1644539286, now seen corresponding path program 1 times [2020-10-16 01:42:42,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:42,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105866966] [2020-10-16 01:42:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:42,308 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 01:42:42,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105866966] [2020-10-16 01:42:42,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:42,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:42:42,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579911749] [2020-10-16 01:42:42,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:42:42,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:42,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:42:42,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:42:42,340 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2020-10-16 01:42:42,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states. [2020-10-16 01:42:42,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:42,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2020-10-16 01:42:42,345 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:42,363 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:42:42,364 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:42:42,364 INFO L80 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:42:42,365 INFO L132 encePairwiseOnDemand]: 90/93 looper letters, 1 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2020-10-16 01:42:42,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 36 flow [2020-10-16 01:42:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:42:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:42:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2020-10-16 01:42:42,381 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8100358422939068 [2020-10-16 01:42:42,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2020-10-16 01:42:42,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2020-10-16 01:42:42,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:42,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2020-10-16 01:42:42,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:42:42,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:42:42,396 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:42:42,398 INFO L185 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 226 transitions. [2020-10-16 01:42:42,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 36 flow [2020-10-16 01:42:42,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:42:42,404 INFO L241 Difference]: Finished difference. Result has 20 places, 12 transitions, 36 flow [2020-10-16 01:42:42,406 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, 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=36, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2020-10-16 01:42:42,407 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2020-10-16 01:42:42,408 INFO L481 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 36 flow [2020-10-16 01:42:42,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:42:42,408 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:42,408 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:42,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:42:42,409 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:42,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:42,409 INFO L82 PathProgramCache]: Analyzing trace with hash -558890290, now seen corresponding path program 1 times [2020-10-16 01:42:42,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:42,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110292002] [2020-10-16 01:42:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:42,513 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 01:42:42,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110292002] [2020-10-16 01:42:42,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:42,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:42:42,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724736894] [2020-10-16 01:42:42,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:42:42,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:42,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:42:42,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:42:42,518 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 93 [2020-10-16 01:42:42,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states. [2020-10-16 01:42:42,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:42,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 93 [2020-10-16 01:42:42,519 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:42,546 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:42:42,546 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2020-10-16 01:42:42,547 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 17 events. 0/17 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 28 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:42:42,547 INFO L132 encePairwiseOnDemand]: 89/93 looper letters, 1 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2020-10-16 01:42:42,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 51 flow [2020-10-16 01:42:42,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:42:42,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:42:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2020-10-16 01:42:42,551 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.75 [2020-10-16 01:42:42,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 279 transitions. [2020-10-16 01:42:42,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 279 transitions. [2020-10-16 01:42:42,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:42,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 279 transitions. [2020-10-16 01:42:42,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:42:42,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:42:42,556 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:42:42,557 INFO L185 Difference]: Start difference. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states and 279 transitions. [2020-10-16 01:42:42,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 51 flow [2020-10-16 01:42:42,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 13 transitions, 45 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:42:42,558 INFO L241 Difference]: Finished difference. Result has 23 places, 12 transitions, 46 flow [2020-10-16 01:42:42,558 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2020-10-16 01:42:42,559 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2020-10-16 01:42:42,559 INFO L481 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 46 flow [2020-10-16 01:42:42,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:42:42,560 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:42,560 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:42,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:42:42,560 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:42,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:42,561 INFO L82 PathProgramCache]: Analyzing trace with hash -222609709, now seen corresponding path program 1 times [2020-10-16 01:42:42,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:42,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912759026] [2020-10-16 01:42:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:42,626 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 01:42:42,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912759026] [2020-10-16 01:42:42,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:42,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:42:42,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236621392] [2020-10-16 01:42:42,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:42:42,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:42,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:42:42,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:42:42,630 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2020-10-16 01:42:42,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 46 flow. Second operand 4 states. [2020-10-16 01:42:42,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:42,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2020-10-16 01:42:42,631 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:42,667 INFO L129 PetriNetUnfolder]: 6/27 cut-off events. [2020-10-16 01:42:42,667 INFO L130 PetriNetUnfolder]: For 33/35 co-relation queries the response was YES. [2020-10-16 01:42:42,668 INFO L80 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 27 events. 6/27 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 51 event pairs, 0 based on Foata normal form. 5/30 useless extension candidates. Maximal degree in co-relation 60. Up to 11 conditions per place. [2020-10-16 01:42:42,668 INFO L132 encePairwiseOnDemand]: 88/93 looper letters, 5 selfloop transitions, 4 changer transitions 1/17 dead transitions. [2020-10-16 01:42:42,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 17 transitions, 76 flow [2020-10-16 01:42:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:42:42,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:42:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2020-10-16 01:42:42,671 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7741935483870968 [2020-10-16 01:42:42,672 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 288 transitions. [2020-10-16 01:42:42,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 288 transitions. [2020-10-16 01:42:42,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:42,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 288 transitions. [2020-10-16 01:42:42,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:42:42,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:42:42,675 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:42:42,676 INFO L185 Difference]: Start difference. First operand has 23 places, 12 transitions, 46 flow. Second operand 4 states and 288 transitions. [2020-10-16 01:42:42,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 17 transitions, 76 flow [2020-10-16 01:42:42,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 64 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:42:42,677 INFO L241 Difference]: Finished difference. Result has 24 places, 14 transitions, 60 flow [2020-10-16 01:42:42,678 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2020-10-16 01:42:42,678 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2020-10-16 01:42:42,678 INFO L481 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 60 flow [2020-10-16 01:42:42,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:42:42,678 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:42,679 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:42,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:42:42,679 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:42,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:42,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2051674651, now seen corresponding path program 1 times [2020-10-16 01:42:42,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:42,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276322617] [2020-10-16 01:42:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:42,741 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 01:42:42,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276322617] [2020-10-16 01:42:42,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:42,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:42:42,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214534132] [2020-10-16 01:42:42,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:42:42,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:42,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:42:42,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:42:42,744 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2020-10-16 01:42:42,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 60 flow. Second operand 5 states. [2020-10-16 01:42:42,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:42,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2020-10-16 01:42:42,745 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:42,791 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2020-10-16 01:42:42,791 INFO L130 PetriNetUnfolder]: For 17/23 co-relation queries the response was YES. [2020-10-16 01:42:42,792 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 18 events. 2/18 cut-off events. For 17/23 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 5/22 useless extension candidates. Maximal degree in co-relation 47. Up to 8 conditions per place. [2020-10-16 01:42:42,792 INFO L132 encePairwiseOnDemand]: 88/93 looper letters, 1 selfloop transitions, 6 changer transitions 1/15 dead transitions. [2020-10-16 01:42:42,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 15 transitions, 81 flow [2020-10-16 01:42:42,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:42:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:42:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2020-10-16 01:42:42,795 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2020-10-16 01:42:42,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 355 transitions. [2020-10-16 01:42:42,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 355 transitions. [2020-10-16 01:42:42,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:42,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 355 transitions. [2020-10-16 01:42:42,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:42:42,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:42:42,799 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:42:42,799 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 60 flow. Second operand 5 states and 355 transitions. [2020-10-16 01:42:42,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 15 transitions, 81 flow [2020-10-16 01:42:42,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 15 transitions, 72 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:42:42,801 INFO L241 Difference]: Finished difference. Result has 28 places, 14 transitions, 76 flow [2020-10-16 01:42:42,802 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=28, PETRI_TRANSITIONS=14} [2020-10-16 01:42:42,802 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2020-10-16 01:42:42,802 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 14 transitions, 76 flow [2020-10-16 01:42:42,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:42:42,802 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:42,803 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:42,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:42:42,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:42,804 INFO L82 PathProgramCache]: Analyzing trace with hash 26722434, now seen corresponding path program 1 times [2020-10-16 01:42:42,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:42,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323509431] [2020-10-16 01:42:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:42,866 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 01:42:42,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323509431] [2020-10-16 01:42:42,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:42,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:42:42,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041792764] [2020-10-16 01:42:42,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:42:42,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:42,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:42:42,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:42:42,870 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2020-10-16 01:42:42,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 14 transitions, 76 flow. Second operand 4 states. [2020-10-16 01:42:42,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:42,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2020-10-16 01:42:42,871 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:42,886 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2020-10-16 01:42:42,887 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-10-16 01:42:42,887 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 13 events. 1/13 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 31. Up to 5 conditions per place. [2020-10-16 01:42:42,888 INFO L132 encePairwiseOnDemand]: 90/93 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2020-10-16 01:42:42,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 13 transitions, 72 flow [2020-10-16 01:42:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:42:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:42:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2020-10-16 01:42:42,890 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2020-10-16 01:42:42,890 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2020-10-16 01:42:42,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2020-10-16 01:42:42,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:42,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2020-10-16 01:42:42,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:42:42,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:42:42,893 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:42:42,893 INFO L185 Difference]: Start difference. First operand has 28 places, 14 transitions, 76 flow. Second operand 4 states and 280 transitions. [2020-10-16 01:42:42,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 13 transitions, 72 flow [2020-10-16 01:42:42,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 13 transitions, 46 flow, removed 2 selfloop flow, removed 8 redundant places. [2020-10-16 01:42:42,895 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2020-10-16 01:42:42,895 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2020-10-16 01:42:42,895 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2020-10-16 01:42:42,896 INFO L481 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2020-10-16 01:42:42,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:42:42,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:42:42,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:42:42 BasicIcfg [2020-10-16 01:42:42,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:42:42,903 INFO L168 Benchmark]: Toolchain (without parser) took 3343.50 ms. Allocated memory was 250.1 MB in the beginning and 357.0 MB in the end (delta: 107.0 MB). Free memory was 204.6 MB in the beginning and 177.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:42,904 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:42:42,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.21 ms. Allocated memory was 250.1 MB in the beginning and 310.9 MB in the end (delta: 60.8 MB). Free memory was 204.6 MB in the beginning and 266.3 MB in the end (delta: -61.7 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:42,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 310.9 MB. Free memory was 266.3 MB in the beginning and 263.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:42,907 INFO L168 Benchmark]: Boogie Preprocessor took 28.30 ms. Allocated memory is still 310.9 MB. Free memory was 263.7 MB in the beginning and 261.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:42,908 INFO L168 Benchmark]: RCFGBuilder took 433.23 ms. Allocated memory is still 310.9 MB. Free memory was 261.2 MB in the beginning and 241.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:42,909 INFO L168 Benchmark]: TraceAbstraction took 2140.43 ms. Allocated memory was 310.9 MB in the beginning and 357.0 MB in the end (delta: 46.1 MB). Free memory was 241.9 MB in the beginning and 177.0 MB in the end (delta: 64.9 MB). Peak memory consumption was 111.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:42,913 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 679.21 ms. Allocated memory was 250.1 MB in the beginning and 310.9 MB in the end (delta: 60.8 MB). Free memory was 204.6 MB in the beginning and 266.3 MB in the end (delta: -61.7 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 310.9 MB. Free memory was 266.3 MB in the beginning and 263.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.30 ms. Allocated memory is still 310.9 MB. Free memory was 263.7 MB in the beginning and 261.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 433.23 ms. Allocated memory is still 310.9 MB. Free memory was 261.2 MB in the beginning and 241.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2140.43 ms. Allocated memory was 310.9 MB in the beginning and 357.0 MB in the end (delta: 46.1 MB). Free memory was 241.9 MB in the beginning and 177.0 MB in the end (delta: 64.9 MB). Peak memory consumption was 111.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 315 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 35 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 51 PlacesBefore, 19 PlacesAfterwards, 45 TransitionsBefore, 12 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 878 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 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: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 13 SDtfs, 4 SDslu, 7 SDs, 0 SdLazy, 32 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=4, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 937 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...