/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/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:46:15,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:46:15,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:46:15,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:46:15,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:46:15,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:46:15,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:46:15,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:46:15,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:46:15,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:46:15,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:46:15,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:46:15,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:46:15,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:46:15,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:46:15,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:46:15,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:46:15,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:46:15,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:46:15,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:46:15,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:46:15,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:46:15,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:46:15,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:46:15,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:46:15,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:46:15,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:46:15,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:46:15,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:46:15,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:46:15,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:46:15,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:46:15,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:46:15,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:46:15,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:46:15,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:46:15,278 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 01:46:15,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:46:15,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:46:15,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:46:15,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:46:15,319 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:46:15,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:46:15,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:46:15,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:46:15,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:46:15,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:46:15,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:46:15,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:46:15,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:46:15,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:46:15,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:46:15,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:46:15,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:46:15,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:46:15,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:46:15,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:46:15,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:46:15,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:46:15,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:46:15,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:46:15,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:46:15,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:46:15,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:46:15,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:46:15,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:46:15,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:46:15,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:46:15,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:46:15,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:46:15,706 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:46:15,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-10-16 01:46:15,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dfb000e2/13a9b3344fd34f2e8588282416b8e293/FLAGc67055ee0 [2020-10-16 01:46:16,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:46:16,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-10-16 01:46:16,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dfb000e2/13a9b3344fd34f2e8588282416b8e293/FLAGc67055ee0 [2020-10-16 01:46:16,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dfb000e2/13a9b3344fd34f2e8588282416b8e293 [2020-10-16 01:46:16,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:46:16,556 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:46:16,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:16,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:46:16,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:46:16,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:16" (1/1) ... [2020-10-16 01:46:16,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@132a106a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:16, skipping insertion in model container [2020-10-16 01:46:16,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:16" (1/1) ... [2020-10-16 01:46:16,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:46:16,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:46:17,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:17,047 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:46:17,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:17,188 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:46:17,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17 WrapperNode [2020-10-16 01:46:17,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:17,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:17,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:46:17,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:46:17,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (1/1) ... [2020-10-16 01:46:17,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (1/1) ... [2020-10-16 01:46:17,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:17,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:46:17,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:46:17,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:46:17,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (1/1) ... [2020-10-16 01:46:17,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (1/1) ... [2020-10-16 01:46:17,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (1/1) ... [2020-10-16 01:46:17,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (1/1) ... [2020-10-16 01:46:17,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (1/1) ... [2020-10-16 01:46:17,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (1/1) ... [2020-10-16 01:46:17,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (1/1) ... [2020-10-16 01:46:17,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:46:17,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:46:17,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:46:17,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:46:17,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (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 01:46:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:46:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:46:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:46:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:46:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:46:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:46:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:46:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:46:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:46:17,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:46:17,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:46:17,346 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 01:46:17,717 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:46:17,718 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:46:17,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:17 BoogieIcfgContainer [2020-10-16 01:46:17,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:46:17,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:46:17,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:46:17,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:46:17,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:46:16" (1/3) ... [2020-10-16 01:46:17,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5927bc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:17, skipping insertion in model container [2020-10-16 01:46:17,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:17" (2/3) ... [2020-10-16 01:46:17,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5927bc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:17, skipping insertion in model container [2020-10-16 01:46:17,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:17" (3/3) ... [2020-10-16 01:46:17,729 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2020-10-16 01:46:17,740 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:46:17,748 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:46:17,749 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:46:17,774 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,775 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,775 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,777 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,778 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,778 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,778 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,783 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,783 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,783 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,784 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:17,807 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 01:46:17,828 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:46:17,828 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:46:17,828 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:46:17,828 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:46:17,828 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:46:17,829 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:46:17,829 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:46:17,829 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:46:17,842 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-10-16 01:46:17,882 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-10-16 01:46:17,882 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:17,887 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 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. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 01:46:17,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 120 flow [2020-10-16 01:46:17,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 94 flow [2020-10-16 01:46:17,895 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:46:17,898 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 44 transitions, 94 flow [2020-10-16 01:46:17,901 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 44 transitions, 94 flow [2020-10-16 01:46:17,901 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 50 places, 44 transitions, 94 flow [2020-10-16 01:46:17,917 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2020-10-16 01:46:17,917 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:17,918 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 1/44 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. 0/43 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 01:46:17,919 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 01:46:19,073 INFO L132 LiptonReduction]: Checked pairs total: 900 [2020-10-16 01:46:19,074 INFO L134 LiptonReduction]: Total number of compositions: 37 [2020-10-16 01:46:19,077 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1184 [2020-10-16 01:46:19,083 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2020-10-16 01:46:19,083 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:19,084 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:19,085 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 01:46:19,085 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:19,091 INFO L82 PathProgramCache]: Analyzing trace with hash 189686472, now seen corresponding path program 1 times [2020-10-16 01:46:19,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:19,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678759393] [2020-10-16 01:46:19,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:19,278 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 01:46:19,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678759393] [2020-10-16 01:46:19,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:19,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:46:19,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554677943] [2020-10-16 01:46:19,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 01:46:19,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:19,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 01:46:19,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 01:46:19,313 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 92 [2020-10-16 01:46:19,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states. [2020-10-16 01:46:19,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:19,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 92 [2020-10-16 01:46:19,317 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:19,326 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:46:19,327 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:19,327 INFO L80 FinitePrefix]: Finished finitePrefix Result has 20 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 1 conditions per place. [2020-10-16 01:46:19,328 INFO L132 encePairwiseOnDemand]: 91/92 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2020-10-16 01:46:19,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2020-10-16 01:46:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 01:46:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 01:46:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 171 transitions. [2020-10-16 01:46:19,346 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9293478260869565 [2020-10-16 01:46:19,346 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 171 transitions. [2020-10-16 01:46:19,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 171 transitions. [2020-10-16 01:46:19,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:19,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 171 transitions. [2020-10-16 01:46:19,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 01:46:19,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 01:46:19,361 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 01:46:19,363 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 171 transitions. [2020-10-16 01:46:19,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2020-10-16 01:46:19,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:46:19,369 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2020-10-16 01:46:19,372 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2020-10-16 01:46:19,374 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2020-10-16 01:46:19,374 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2020-10-16 01:46:19,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 01:46:19,374 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:19,374 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 01:46:19,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:46:19,375 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:19,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:19,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1585313408, now seen corresponding path program 1 times [2020-10-16 01:46:19,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:19,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950302346] [2020-10-16 01:46:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:19,445 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 01:46:19,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950302346] [2020-10-16 01:46:19,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:19,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:46:19,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018278319] [2020-10-16 01:46:19,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:46:19,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:19,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:46:19,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:46:19,450 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2020-10-16 01:46:19,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states. [2020-10-16 01:46:19,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:19,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2020-10-16 01:46:19,451 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:19,484 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-10-16 01:46:19,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:19,485 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 19 events. 3/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 1 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 33. Up to 10 conditions per place. [2020-10-16 01:46:19,485 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 3 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2020-10-16 01:46:19,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 44 flow [2020-10-16 01:46:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:46:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:46:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2020-10-16 01:46:19,493 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8079710144927537 [2020-10-16 01:46:19,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2020-10-16 01:46:19,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2020-10-16 01:46:19,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:19,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2020-10-16 01:46:19,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:46:19,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:46:19,503 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:46:19,503 INFO L185 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 223 transitions. [2020-10-16 01:46:19,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 44 flow [2020-10-16 01:46:19,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 44 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:46:19,507 INFO L241 Difference]: Finished difference. Result has 21 places, 14 transitions, 47 flow [2020-10-16 01:46:19,507 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2020-10-16 01:46:19,508 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2020-10-16 01:46:19,508 INFO L481 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 47 flow [2020-10-16 01:46:19,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:46:19,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:19,509 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:19,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:46:19,511 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:19,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:19,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1888782877, now seen corresponding path program 1 times [2020-10-16 01:46:19,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:19,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117008719] [2020-10-16 01:46:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:19,609 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 01:46:19,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117008719] [2020-10-16 01:46:19,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:19,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:19,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090927730] [2020-10-16 01:46:19,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:19,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:19,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:19,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:19,613 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 92 [2020-10-16 01:46:19,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 47 flow. Second operand 4 states. [2020-10-16 01:46:19,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:19,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 92 [2020-10-16 01:46:19,614 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:19,655 INFO L129 PetriNetUnfolder]: 9/36 cut-off events. [2020-10-16 01:46:19,656 INFO L130 PetriNetUnfolder]: For 7/10 co-relation queries the response was YES. [2020-10-16 01:46:19,656 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 36 events. 9/36 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 99 event pairs, 3 based on Foata normal form. 10/45 useless extension candidates. Maximal degree in co-relation 79. Up to 19 conditions per place. [2020-10-16 01:46:19,657 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 4 selfloop transitions, 5 changer transitions 3/21 dead transitions. [2020-10-16 01:46:19,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 85 flow [2020-10-16 01:46:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:46:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:46:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 319 transitions. [2020-10-16 01:46:19,660 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6934782608695652 [2020-10-16 01:46:19,660 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 319 transitions. [2020-10-16 01:46:19,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 319 transitions. [2020-10-16 01:46:19,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:19,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 319 transitions. [2020-10-16 01:46:19,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:46:19,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:46:19,664 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:46:19,664 INFO L185 Difference]: Start difference. First operand has 21 places, 14 transitions, 47 flow. Second operand 5 states and 319 transitions. [2020-10-16 01:46:19,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 85 flow [2020-10-16 01:46:19,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:19,666 INFO L241 Difference]: Finished difference. Result has 27 places, 18 transitions, 81 flow [2020-10-16 01:46:19,666 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2020-10-16 01:46:19,667 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2020-10-16 01:46:19,667 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 81 flow [2020-10-16 01:46:19,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:19,667 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:19,667 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:19,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:46:19,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:19,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1580909445, now seen corresponding path program 1 times [2020-10-16 01:46:19,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:19,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533639902] [2020-10-16 01:46:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:19,718 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 01:46:19,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533639902] [2020-10-16 01:46:19,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:19,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:19,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259496547] [2020-10-16 01:46:19,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:46:19,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:19,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:46:19,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:46:19,722 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 92 [2020-10-16 01:46:19,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 81 flow. Second operand 5 states. [2020-10-16 01:46:19,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:19,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 92 [2020-10-16 01:46:19,723 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:19,784 INFO L129 PetriNetUnfolder]: 3/26 cut-off events. [2020-10-16 01:46:19,785 INFO L130 PetriNetUnfolder]: For 51/64 co-relation queries the response was YES. [2020-10-16 01:46:19,785 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 26 events. 3/26 cut-off events. For 51/64 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 17/43 useless extension candidates. Maximal degree in co-relation 80. Up to 12 conditions per place. [2020-10-16 01:46:19,786 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 2 selfloop transitions, 8 changer transitions 2/21 dead transitions. [2020-10-16 01:46:19,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 119 flow [2020-10-16 01:46:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:46:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:46:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 441 transitions. [2020-10-16 01:46:19,788 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2020-10-16 01:46:19,788 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 441 transitions. [2020-10-16 01:46:19,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 441 transitions. [2020-10-16 01:46:19,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:19,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 441 transitions. [2020-10-16 01:46:19,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:46:19,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:46:19,793 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:46:19,793 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 81 flow. Second operand 7 states and 441 transitions. [2020-10-16 01:46:19,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 119 flow [2020-10-16 01:46:19,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 21 transitions, 119 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:46:19,796 INFO L241 Difference]: Finished difference. Result has 36 places, 19 transitions, 114 flow [2020-10-16 01:46:19,796 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=114, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2020-10-16 01:46:19,796 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 17 predicate places. [2020-10-16 01:46:19,796 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 114 flow [2020-10-16 01:46:19,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:46:19,797 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:19,797 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:19,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:46:19,797 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:19,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1153598993, now seen corresponding path program 1 times [2020-10-16 01:46:19,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:19,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396999334] [2020-10-16 01:46:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:19,838 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 01:46:19,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396999334] [2020-10-16 01:46:19,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:19,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:19,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354427838] [2020-10-16 01:46:19,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:46:19,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:19,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:46:19,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:46:19,843 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2020-10-16 01:46:19,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 114 flow. Second operand 3 states. [2020-10-16 01:46:19,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:19,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2020-10-16 01:46:19,844 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:19,866 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2020-10-16 01:46:19,866 INFO L130 PetriNetUnfolder]: For 98/104 co-relation queries the response was YES. [2020-10-16 01:46:19,866 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 29 events. 2/29 cut-off events. For 98/104 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 67 event pairs, 0 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 102. Up to 14 conditions per place. [2020-10-16 01:46:19,867 INFO L132 encePairwiseOnDemand]: 89/92 looper letters, 2 selfloop transitions, 2 changer transitions 5/19 dead transitions. [2020-10-16 01:46:19,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 19 transitions, 126 flow [2020-10-16 01:46:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:46:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:46:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2020-10-16 01:46:19,869 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8043478260869565 [2020-10-16 01:46:19,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2020-10-16 01:46:19,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2020-10-16 01:46:19,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:19,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2020-10-16 01:46:19,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:46:19,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:46:19,871 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:46:19,871 INFO L185 Difference]: Start difference. First operand has 36 places, 19 transitions, 114 flow. Second operand 3 states and 222 transitions. [2020-10-16 01:46:19,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 19 transitions, 126 flow [2020-10-16 01:46:19,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 19 transitions, 101 flow, removed 6 selfloop flow, removed 6 redundant places. [2020-10-16 01:46:19,876 INFO L241 Difference]: Finished difference. Result has 32 places, 14 transitions, 70 flow [2020-10-16 01:46:19,876 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=32, PETRI_TRANSITIONS=14} [2020-10-16 01:46:19,877 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 13 predicate places. [2020-10-16 01:46:19,877 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 14 transitions, 70 flow [2020-10-16 01:46:19,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:46:19,877 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:19,877 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:19,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:46:19,878 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:19,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2045185969, now seen corresponding path program 2 times [2020-10-16 01:46:19,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:19,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298424337] [2020-10-16 01:46:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:19,932 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 01:46:19,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298424337] [2020-10-16 01:46:19,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:19,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:19,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131846589] [2020-10-16 01:46:19,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:19,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:19,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:19,935 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 92 [2020-10-16 01:46:19,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 14 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:46:19,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:19,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 92 [2020-10-16 01:46:19,936 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:19,948 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2020-10-16 01:46:19,948 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:46:19,948 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 13 events. 1/13 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 35. Up to 4 conditions per place. [2020-10-16 01:46:19,949 INFO L132 encePairwiseOnDemand]: 89/92 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2020-10-16 01:46:19,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 13 transitions, 66 flow [2020-10-16 01:46:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2020-10-16 01:46:19,950 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2020-10-16 01:46:19,950 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2020-10-16 01:46:19,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2020-10-16 01:46:19,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:19,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2020-10-16 01:46:19,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:19,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:19,953 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:19,953 INFO L185 Difference]: Start difference. First operand has 32 places, 14 transitions, 70 flow. Second operand 4 states and 280 transitions. [2020-10-16 01:46:19,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 13 transitions, 66 flow [2020-10-16 01:46:19,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 13 transitions, 54 flow, removed 1 selfloop flow, removed 5 redundant places. [2020-10-16 01:46:19,954 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2020-10-16 01:46:19,954 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, 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=26, PETRI_TRANSITIONS=0} [2020-10-16 01:46:19,954 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2020-10-16 01:46:19,955 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2020-10-16 01:46:19,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:19,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:46:19,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:46:19 BasicIcfg [2020-10-16 01:46:19,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:46:19,961 INFO L168 Benchmark]: Toolchain (without parser) took 3404.83 ms. Allocated memory was 246.4 MB in the beginning and 348.1 MB in the end (delta: 101.7 MB). Free memory was 199.7 MB in the beginning and 175.5 MB in the end (delta: 24.2 MB). Peak memory consumption was 125.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:19,962 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 246.4 MB. Free memory is still 220.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:46:19,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.37 ms. Allocated memory was 246.4 MB in the beginning and 298.3 MB in the end (delta: 51.9 MB). Free memory was 199.7 MB in the beginning and 253.6 MB in the end (delta: -53.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:19,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.54 ms. Allocated memory is still 298.3 MB. Free memory was 253.6 MB in the beginning and 251.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:19,965 INFO L168 Benchmark]: Boogie Preprocessor took 25.58 ms. Allocated memory is still 298.3 MB. Free memory was 251.1 MB in the beginning and 248.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:19,965 INFO L168 Benchmark]: RCFGBuilder took 453.94 ms. Allocated memory is still 298.3 MB. Free memory was 248.6 MB in the beginning and 229.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:19,966 INFO L168 Benchmark]: TraceAbstraction took 2237.54 ms. Allocated memory was 298.3 MB in the beginning and 348.1 MB in the end (delta: 49.8 MB). Free memory was 229.3 MB in the beginning and 175.5 MB in the end (delta: 53.8 MB). Peak memory consumption was 103.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:19,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 246.4 MB. Free memory is still 220.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 633.37 ms. Allocated memory was 246.4 MB in the beginning and 298.3 MB in the end (delta: 51.9 MB). Free memory was 199.7 MB in the beginning and 253.6 MB in the end (delta: -53.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.54 ms. Allocated memory is still 298.3 MB. Free memory was 253.6 MB in the beginning and 251.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.58 ms. Allocated memory is still 298.3 MB. Free memory was 251.1 MB in the beginning and 248.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 453.94 ms. Allocated memory is still 298.3 MB. Free memory was 248.6 MB in the beginning and 229.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2237.54 ms. Allocated memory was 298.3 MB in the beginning and 348.1 MB in the end (delta: 49.8 MB). Free memory was 229.3 MB in the beginning and 175.5 MB in the end (delta: 53.8 MB). Peak memory consumption was 103.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 319 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 37 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 50 PlacesBefore, 19 PlacesAfterwards, 44 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 37 TotalNumberOfCompositions, 900 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, 54 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: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 16 SDtfs, 6 SDslu, 6 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred 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, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 897 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...