/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:47:44,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:47:44,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:47:44,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:47:44,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:47:44,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:47:44,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:47:44,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:47:44,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:47:44,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:47:44,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:47:44,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:47:44,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:47:44,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:47:44,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:47:44,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:47:44,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:47:44,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:47:44,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:47:44,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:47:44,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:47:44,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:47:44,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:47:44,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:47:44,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:47:44,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:47:44,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:47:44,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:47:44,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:47:44,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:47:44,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:47:44,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:47:44,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:47:44,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:47:44,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:47:44,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:47:44,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:47:44,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:47:44,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:47:44,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:47:44,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:47:44,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:47:44,393 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:47:44,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:47:44,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:47:44,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:47:44,396 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:47:44,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:47:44,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:47:44,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:47:44,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:47:44,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:47:44,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:47:44,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:47:44,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:47:44,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:47:44,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:47:44,399 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:47:44,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:47:44,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:47:44,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:47:44,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:47:44,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:47:44,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:47:44,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:47:44,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:47:44,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:47:44,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:47:44,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:47:44,401 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:47:44,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:47:44,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:47:44,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:47:44,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:47:44,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:47:44,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:47:44,722 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:47:44,723 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2020-10-11 18:47:44,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2711a7d7e/7c30a4280f374853aabd9c59e0864515/FLAGf7fa75258 [2020-10-11 18:47:45,298 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:47:45,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2020-10-11 18:47:45,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2711a7d7e/7c30a4280f374853aabd9c59e0864515/FLAGf7fa75258 [2020-10-11 18:47:45,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2711a7d7e/7c30a4280f374853aabd9c59e0864515 [2020-10-11 18:47:45,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:47:45,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:47:45,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:47:45,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:47:45,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:47:45,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:47:45" (1/1) ... [2020-10-11 18:47:45,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f48bc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:45, skipping insertion in model container [2020-10-11 18:47:45,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:47:45" (1/1) ... [2020-10-11 18:47:45,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:47:45,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:47:46,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:47:46,162 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:47:46,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:47:46,334 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:47:46,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46 WrapperNode [2020-10-11 18:47:46,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:47:46,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:47:46,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:47:46,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:47:46,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (1/1) ... [2020-10-11 18:47:46,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (1/1) ... [2020-10-11 18:47:46,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:47:46,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:47:46,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:47:46,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:47:46,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (1/1) ... [2020-10-11 18:47:46,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (1/1) ... [2020-10-11 18:47:46,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (1/1) ... [2020-10-11 18:47:46,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (1/1) ... [2020-10-11 18:47:46,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (1/1) ... [2020-10-11 18:47:46,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (1/1) ... [2020-10-11 18:47:46,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (1/1) ... [2020-10-11 18:47:46,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:47:46,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:47:46,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:47:46,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:47:46,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (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 [2020-10-11 18:47:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:47:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:47:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:47:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:47:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:47:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:47:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:47:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:47:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:47:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:47:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:47:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:47:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:47:46,486 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:47:46,867 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:47:46,867 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:47:46,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:47:46 BoogieIcfgContainer [2020-10-11 18:47:46,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:47:46,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:47:46,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:47:46,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:47:46,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:47:45" (1/3) ... [2020-10-11 18:47:46,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9e5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:47:46, skipping insertion in model container [2020-10-11 18:47:46,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:47:46" (2/3) ... [2020-10-11 18:47:46,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9e5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:47:46, skipping insertion in model container [2020-10-11 18:47:46,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:47:46" (3/3) ... [2020-10-11 18:47:46,878 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_tso.opt.i [2020-10-11 18:47:46,888 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:47:46,895 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:47:46,896 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:47:46,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,923 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,923 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,923 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,924 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,925 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,925 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,926 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,926 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,927 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,927 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,931 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,931 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:47:46,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:47:46,978 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:47:46,979 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:47:46,979 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:47:46,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:47:46,979 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:47:46,979 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:47:46,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:47:46,979 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:47:46,992 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-11 18:47:47,035 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-11 18:47:47,035 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:47:47,042 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:47:47,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-11 18:47:47,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-11 18:47:47,086 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-11 18:47:47,086 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:47:47,086 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:47:47,088 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:47:47,089 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:47:47,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:47:47,095 INFO L82 PathProgramCache]: Analyzing trace with hash 147192619, now seen corresponding path program 1 times [2020-10-11 18:47:47,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:47:47,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591076274] [2020-10-11 18:47:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:47:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:47:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:47:47,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591076274] [2020-10-11 18:47:47,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:47:47,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:47:47,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081935605] [2020-10-11 18:47:47,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:47:47,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:47:47,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:47:47,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:47:47,722 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-11 18:47:47,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 123 flow. Second operand 6 states. [2020-10-11 18:47:47,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:47:47,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-11 18:47:47,727 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:47:48,051 INFO L129 PetriNetUnfolder]: 112/310 cut-off events. [2020-10-11 18:47:48,052 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:47:48,055 INFO L80 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 310 events. 112/310 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1533 event pairs, 2 based on Foata normal form. 15/315 useless extension candidates. Maximal degree in co-relation 498. Up to 81 conditions per place. [2020-10-11 18:47:48,060 INFO L132 encePairwiseOnDemand]: 60/71 looper letters, 10 selfloop transitions, 6 changer transitions 25/86 dead transitions. [2020-10-11 18:47:48,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 263 flow [2020-10-11 18:47:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:47:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:47:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 626 transitions. [2020-10-11 18:47:48,087 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8816901408450705 [2020-10-11 18:47:48,088 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 626 transitions. [2020-10-11 18:47:48,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 626 transitions. [2020-10-11 18:47:48,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:47:48,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 626 transitions. [2020-10-11 18:47:48,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:47:48,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:47:48,120 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:47:48,122 INFO L185 Difference]: Start difference. First operand has 66 places, 57 transitions, 123 flow. Second operand 10 states and 626 transitions. [2020-10-11 18:47:48,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 263 flow [2020-10-11 18:47:48,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 260 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:47:48,138 INFO L241 Difference]: Finished difference. Result has 78 places, 58 transitions, 172 flow [2020-10-11 18:47:48,144 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=172, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2020-10-11 18:47:48,145 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2020-10-11 18:47:48,146 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 172 flow [2020-10-11 18:47:48,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:47:48,146 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:47:48,146 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:47:48,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:47:48,147 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:47:48,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:47:48,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1411875049, now seen corresponding path program 1 times [2020-10-11 18:47:48,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:47:48,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069876525] [2020-10-11 18:47:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:47:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:47:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:47:48,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069876525] [2020-10-11 18:47:48,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:47:48,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:47:48,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360250920] [2020-10-11 18:47:48,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:47:48,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:47:48,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:47:48,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:47:48,560 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-11 18:47:48,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 172 flow. Second operand 7 states. [2020-10-11 18:47:48,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:47:48,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-11 18:47:48,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:47:48,802 INFO L129 PetriNetUnfolder]: 52/188 cut-off events. [2020-10-11 18:47:48,802 INFO L130 PetriNetUnfolder]: For 285/297 co-relation queries the response was YES. [2020-10-11 18:47:48,806 INFO L80 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 188 events. 52/188 cut-off events. For 285/297 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 710 event pairs, 0 based on Foata normal form. 12/198 useless extension candidates. Maximal degree in co-relation 534. Up to 75 conditions per place. [2020-10-11 18:47:48,810 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 10 selfloop transitions, 9 changer transitions 19/83 dead transitions. [2020-10-11 18:47:48,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 83 transitions, 425 flow [2020-10-11 18:47:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:47:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:47:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 620 transitions. [2020-10-11 18:47:48,815 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8732394366197183 [2020-10-11 18:47:48,815 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 620 transitions. [2020-10-11 18:47:48,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 620 transitions. [2020-10-11 18:47:48,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:47:48,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 620 transitions. [2020-10-11 18:47:48,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:47:48,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:47:48,827 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:47:48,827 INFO L185 Difference]: Start difference. First operand has 78 places, 58 transitions, 172 flow. Second operand 10 states and 620 transitions. [2020-10-11 18:47:48,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 83 transitions, 425 flow [2020-10-11 18:47:48,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 401 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:47:48,836 INFO L241 Difference]: Finished difference. Result has 82 places, 61 transitions, 240 flow [2020-10-11 18:47:48,837 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=240, PETRI_PLACES=82, PETRI_TRANSITIONS=61} [2020-10-11 18:47:48,838 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2020-10-11 18:47:48,838 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 61 transitions, 240 flow [2020-10-11 18:47:48,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:47:48,838 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:47:48,839 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:47:48,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:47:48,839 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:47:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:47:48,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1534900331, now seen corresponding path program 1 times [2020-10-11 18:47:48,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:47:48,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635898316] [2020-10-11 18:47:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:47:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:47:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:47:48,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635898316] [2020-10-11 18:47:48,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:47:48,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:47:48,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651710277] [2020-10-11 18:47:48,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:47:48,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:47:48,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:47:48,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:47:49,198 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-11 18:47:49,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 61 transitions, 240 flow. Second operand 7 states. [2020-10-11 18:47:49,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:47:49,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-11 18:47:49,199 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:47:49,340 INFO L129 PetriNetUnfolder]: 37/224 cut-off events. [2020-10-11 18:47:49,340 INFO L130 PetriNetUnfolder]: For 492/510 co-relation queries the response was YES. [2020-10-11 18:47:49,342 INFO L80 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 224 events. 37/224 cut-off events. For 492/510 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 992 event pairs, 6 based on Foata normal form. 7/225 useless extension candidates. Maximal degree in co-relation 608. Up to 55 conditions per place. [2020-10-11 18:47:49,343 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 18 selfloop transitions, 2 changer transitions 4/75 dead transitions. [2020-10-11 18:47:49,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 75 transitions, 316 flow [2020-10-11 18:47:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:47:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:47:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 438 transitions. [2020-10-11 18:47:49,346 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8812877263581489 [2020-10-11 18:47:49,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 438 transitions. [2020-10-11 18:47:49,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 438 transitions. [2020-10-11 18:47:49,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:47:49,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 438 transitions. [2020-10-11 18:47:49,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:47:49,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:47:49,350 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:47:49,350 INFO L185 Difference]: Start difference. First operand has 82 places, 61 transitions, 240 flow. Second operand 7 states and 438 transitions. [2020-10-11 18:47:49,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 75 transitions, 316 flow [2020-10-11 18:47:49,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 75 transitions, 260 flow, removed 20 selfloop flow, removed 9 redundant places. [2020-10-11 18:47:49,355 INFO L241 Difference]: Finished difference. Result has 80 places, 62 transitions, 203 flow [2020-10-11 18:47:49,356 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2020-10-11 18:47:49,356 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2020-10-11 18:47:49,356 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 203 flow [2020-10-11 18:47:49,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:47:49,357 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:47:49,357 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:47:49,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:47:49,357 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:47:49,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:47:49,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2024250415, now seen corresponding path program 2 times [2020-10-11 18:47:49,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:47:49,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902554911] [2020-10-11 18:47:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:47:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:47:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:47:49,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902554911] [2020-10-11 18:47:49,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:47:49,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:47:49,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858654027] [2020-10-11 18:47:49,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:47:49,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:47:49,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:47:49,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:47:49,642 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2020-10-11 18:47:49,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 203 flow. Second operand 8 states. [2020-10-11 18:47:49,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:47:49,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2020-10-11 18:47:49,644 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:47:49,846 INFO L129 PetriNetUnfolder]: 32/161 cut-off events. [2020-10-11 18:47:49,846 INFO L130 PetriNetUnfolder]: For 263/299 co-relation queries the response was YES. [2020-10-11 18:47:49,847 INFO L80 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 161 events. 32/161 cut-off events. For 263/299 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 595 event pairs, 0 based on Foata normal form. 20/175 useless extension candidates. Maximal degree in co-relation 449. Up to 53 conditions per place. [2020-10-11 18:47:49,848 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 4 selfloop transitions, 12 changer transitions 14/75 dead transitions. [2020-10-11 18:47:49,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 348 flow [2020-10-11 18:47:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:47:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:47:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 669 transitions. [2020-10-11 18:47:49,851 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8565941101152369 [2020-10-11 18:47:49,851 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 669 transitions. [2020-10-11 18:47:49,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 669 transitions. [2020-10-11 18:47:49,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:47:49,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 669 transitions. [2020-10-11 18:47:49,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:47:49,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:47:49,856 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:47:49,856 INFO L185 Difference]: Start difference. First operand has 80 places, 62 transitions, 203 flow. Second operand 11 states and 669 transitions. [2020-10-11 18:47:49,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 75 transitions, 348 flow [2020-10-11 18:47:49,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 75 transitions, 323 flow, removed 12 selfloop flow, removed 4 redundant places. [2020-10-11 18:47:49,860 INFO L241 Difference]: Finished difference. Result has 89 places, 61 transitions, 230 flow [2020-10-11 18:47:49,860 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=230, PETRI_PLACES=89, PETRI_TRANSITIONS=61} [2020-10-11 18:47:49,861 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2020-10-11 18:47:49,861 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 61 transitions, 230 flow [2020-10-11 18:47:49,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:47:49,861 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:47:49,861 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:47:49,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:47:49,862 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:47:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:47:49,862 INFO L82 PathProgramCache]: Analyzing trace with hash -469883121, now seen corresponding path program 1 times [2020-10-11 18:47:49,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:47:49,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912234102] [2020-10-11 18:47:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:47:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:47:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:47:49,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912234102] [2020-10-11 18:47:49,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:47:49,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:47:49,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183537769] [2020-10-11 18:47:49,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:47:49,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:47:49,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:47:49,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:47:50,249 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-11 18:47:50,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 61 transitions, 230 flow. Second operand 7 states. [2020-10-11 18:47:50,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:47:50,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-11 18:47:50,251 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:47:50,374 INFO L129 PetriNetUnfolder]: 12/125 cut-off events. [2020-10-11 18:47:50,376 INFO L130 PetriNetUnfolder]: For 130/148 co-relation queries the response was YES. [2020-10-11 18:47:50,376 INFO L80 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 125 events. 12/125 cut-off events. For 130/148 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 343 event pairs, 0 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 259. Up to 25 conditions per place. [2020-10-11 18:47:50,377 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 9 selfloop transitions, 1 changer transitions 5/66 dead transitions. [2020-10-11 18:47:50,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 66 transitions, 272 flow [2020-10-11 18:47:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:47:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:47:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 429 transitions. [2020-10-11 18:47:50,380 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8631790744466801 [2020-10-11 18:47:50,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 429 transitions. [2020-10-11 18:47:50,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 429 transitions. [2020-10-11 18:47:50,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:47:50,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 429 transitions. [2020-10-11 18:47:50,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:47:50,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:47:50,384 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:47:50,384 INFO L185 Difference]: Start difference. First operand has 89 places, 61 transitions, 230 flow. Second operand 7 states and 429 transitions. [2020-10-11 18:47:50,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 66 transitions, 272 flow [2020-10-11 18:47:50,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 66 transitions, 192 flow, removed 21 selfloop flow, removed 16 redundant places. [2020-10-11 18:47:50,391 INFO L241 Difference]: Finished difference. Result has 79 places, 61 transitions, 165 flow [2020-10-11 18:47:50,391 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=79, PETRI_TRANSITIONS=61} [2020-10-11 18:47:50,392 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2020-10-11 18:47:50,392 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 61 transitions, 165 flow [2020-10-11 18:47:50,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:47:50,392 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:47:50,393 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:47:50,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:47:50,393 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:47:50,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:47:50,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1883727063, now seen corresponding path program 2 times [2020-10-11 18:47:50,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:47:50,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960795926] [2020-10-11 18:47:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:47:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:47:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:47:50,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960795926] [2020-10-11 18:47:50,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:47:50,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:47:50,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395938593] [2020-10-11 18:47:50,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:47:50,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:47:50,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:47:50,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:47:50,656 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 71 [2020-10-11 18:47:50,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 61 transitions, 165 flow. Second operand 7 states. [2020-10-11 18:47:50,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:47:50,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 71 [2020-10-11 18:47:50,657 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:47:50,732 INFO L129 PetriNetUnfolder]: 9/116 cut-off events. [2020-10-11 18:47:50,732 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 18:47:50,733 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 116 events. 9/116 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 355 event pairs, 0 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 177. Up to 14 conditions per place. [2020-10-11 18:47:50,734 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2020-10-11 18:47:50,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 60 transitions, 181 flow [2020-10-11 18:47:50,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:47:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:47:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 424 transitions. [2020-10-11 18:47:50,736 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8531187122736419 [2020-10-11 18:47:50,736 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 424 transitions. [2020-10-11 18:47:50,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 424 transitions. [2020-10-11 18:47:50,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:47:50,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 424 transitions. [2020-10-11 18:47:50,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:47:50,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:47:50,739 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:47:50,740 INFO L185 Difference]: Start difference. First operand has 79 places, 61 transitions, 165 flow. Second operand 7 states and 424 transitions. [2020-10-11 18:47:50,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 60 transitions, 181 flow [2020-10-11 18:47:50,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 60 transitions, 174 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-11 18:47:50,742 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-11 18:47:50,742 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-11 18:47:50,742 INFO L341 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2020-10-11 18:47:50,742 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-11 18:47:50,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:47:50,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:47:50,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:47:50 BasicIcfg [2020-10-11 18:47:50,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:47:50,751 INFO L168 Benchmark]: Toolchain (without parser) took 5145.33 ms. Allocated memory was 251.1 MB in the beginning and 417.9 MB in the end (delta: 166.7 MB). Free memory was 203.9 MB in the beginning and 319.7 MB in the end (delta: -115.8 MB). Peak memory consumption was 50.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:47:50,752 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 251.1 MB. Free memory was 226.7 MB in the beginning and 225.8 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. [2020-10-11 18:47:50,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.04 ms. Allocated memory was 251.1 MB in the beginning and 318.8 MB in the end (delta: 67.6 MB). Free memory was 203.0 MB in the beginning and 272.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:47:50,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 318.8 MB. Free memory was 272.1 MB in the beginning and 270.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:47:50,755 INFO L168 Benchmark]: Boogie Preprocessor took 27.52 ms. Allocated memory is still 318.8 MB. Free memory was 270.5 MB in the beginning and 268.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:47:50,756 INFO L168 Benchmark]: RCFGBuilder took 457.40 ms. Allocated memory is still 318.8 MB. Free memory was 268.8 MB in the beginning and 245.9 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:47:50,756 INFO L168 Benchmark]: TraceAbstraction took 3877.86 ms. Allocated memory was 318.8 MB in the beginning and 417.9 MB in the end (delta: 99.1 MB). Free memory was 245.0 MB in the beginning and 319.7 MB in the end (delta: -74.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:47:50,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 251.1 MB. Free memory was 226.7 MB in the beginning and 225.8 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 730.04 ms. Allocated memory was 251.1 MB in the beginning and 318.8 MB in the end (delta: 67.6 MB). Free memory was 203.0 MB in the beginning and 272.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 30.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 318.8 MB. Free memory was 272.1 MB in the beginning and 270.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.52 ms. Allocated memory is still 318.8 MB. Free memory was 270.5 MB in the beginning and 268.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 457.40 ms. Allocated memory is still 318.8 MB. Free memory was 268.8 MB in the beginning and 245.9 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3877.86 ms. Allocated memory was 318.8 MB in the beginning and 417.9 MB in the end (delta: 99.1 MB). Free memory was 245.0 MB in the beginning and 319.7 MB in the end (delta: -74.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 4 procedures, 70 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: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 162 SDslu, 449 SDs, 0 SdLazy, 469 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=2, 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, 0.7s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 30808 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...