/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-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:12:41,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:12:41,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:12:41,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:12:41,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:12:41,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:12:41,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:12:41,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:12:41,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:12:41,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:12:41,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:12:41,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:12:41,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:12:41,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:12:41,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:12:41,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:12:41,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:12:41,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:12:41,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:12:41,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:12:41,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:12:41,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:12:41,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:12:41,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:12:41,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:12:41,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:12:41,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:12:41,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:12:41,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:12:41,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:12:41,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:12:41,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:12:41,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:12:41,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:12:41,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:12:41,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:12:41,278 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-SemanticLooper.epf [2020-10-16 05:12:41,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:12:41,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:12:41,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:12:41,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:12:41,314 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:12:41,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:12:41,315 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:12:41,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:12:41,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:12:41,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:12:41,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:12:41,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:12:41,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:12:41,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:12:41,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:12:41,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:12:41,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:12:41,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:12:41,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:12:41,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:12:41,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:12:41,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:12:41,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:12:41,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:12:41,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:12:41,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:12:41,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:12:41,324 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:12:41,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:12:41,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:12:41,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:12:41,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:12:41,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:12:41,617 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:12:41,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-16 05:12:41,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6f2d602/08a7c1d7f743450db6f7700e21082e15/FLAG48e61299f [2020-10-16 05:12:42,265 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:12:42,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-2.i [2020-10-16 05:12:42,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6f2d602/08a7c1d7f743450db6f7700e21082e15/FLAG48e61299f [2020-10-16 05:12:42,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6f2d602/08a7c1d7f743450db6f7700e21082e15 [2020-10-16 05:12:42,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:12:42,547 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:12:42,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:42,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:12:42,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:12:42,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b586da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42, skipping insertion in model container [2020-10-16 05:12:42,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:12:42,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:12:43,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:43,232 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:12:43,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:43,354 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:12:43,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43 WrapperNode [2020-10-16 05:12:43,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:43,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:43,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:12:43,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:12:43,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (1/1) ... [2020-10-16 05:12:43,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (1/1) ... [2020-10-16 05:12:43,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:43,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:12:43,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:12:43,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:12:43,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (1/1) ... [2020-10-16 05:12:43,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (1/1) ... [2020-10-16 05:12:43,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (1/1) ... [2020-10-16 05:12:43,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (1/1) ... [2020-10-16 05:12:43,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (1/1) ... [2020-10-16 05:12:43,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (1/1) ... [2020-10-16 05:12:43,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (1/1) ... [2020-10-16 05:12:43,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:12:43,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:12:43,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:12:43,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:12:43,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (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 05:12:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 05:12:43,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 05:12:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 05:12:43,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 05:12:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:12:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:12:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:12:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:12:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:12:43,520 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 05:12:43,900 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:12:43,901 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 05:12:43,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:43 BoogieIcfgContainer [2020-10-16 05:12:43,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:12:43,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:12:43,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:12:43,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:12:43,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:12:42" (1/3) ... [2020-10-16 05:12:43,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202f6e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:43, skipping insertion in model container [2020-10-16 05:12:43,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:43" (2/3) ... [2020-10-16 05:12:43,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202f6e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:43, skipping insertion in model container [2020-10-16 05:12:43,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:43" (3/3) ... [2020-10-16 05:12:43,911 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2020-10-16 05:12:43,923 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:12:43,930 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:12:43,931 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:12:43,957 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,957 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,957 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,958 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,958 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,959 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,959 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,959 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,959 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,961 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,961 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,962 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,967 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,967 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,968 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,968 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:12:44,015 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:44,015 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:44,015 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:44,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:44,016 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:44,016 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:44,016 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:44,016 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:44,027 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-10-16 05:12:44,064 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-16 05:12:44,064 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:44,070 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-16 05:12:44,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 51 transitions, 112 flow [2020-10-16 05:12:44,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 50 transitions, 108 flow [2020-10-16 05:12:44,079 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:44,082 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 50 transitions, 108 flow [2020-10-16 05:12:44,085 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 50 transitions, 108 flow [2020-10-16 05:12:44,085 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 108 flow [2020-10-16 05:12:44,106 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-16 05:12:44,107 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:44,108 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-16 05:12:44,110 INFO L117 LiptonReduction]: Number of co-enabled transitions 692 [2020-10-16 05:12:44,995 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-16 05:12:45,250 INFO L132 LiptonReduction]: Checked pairs total: 670 [2020-10-16 05:12:45,250 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 05:12:45,253 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1176 [2020-10-16 05:12:45,261 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 05:12:45,261 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:45,262 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:45,263 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:12:45,263 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:45,269 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-10-16 05:12:45,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:45,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206337193] [2020-10-16 05:12:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:45,462 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 05:12:45,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206337193] [2020-10-16 05:12:45,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:45,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:45,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098309623] [2020-10-16 05:12:45,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:45,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:45,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:45,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:45,501 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 98 [2020-10-16 05:12:45,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states. [2020-10-16 05:12:45,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:45,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 98 [2020-10-16 05:12:45,506 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:45,532 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2020-10-16 05:12:45,532 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:45,533 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 15 events. 1/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2020-10-16 05:12:45,534 INFO L132 encePairwiseOnDemand]: 95/98 looper letters, 3 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2020-10-16 05:12:45,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 42 flow [2020-10-16 05:12:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2020-10-16 05:12:45,551 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7448979591836735 [2020-10-16 05:12:45,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2020-10-16 05:12:45,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2020-10-16 05:12:45,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:45,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2020-10-16 05:12:45,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:45,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:45,567 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:45,569 INFO L185 Difference]: Start difference. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states and 219 transitions. [2020-10-16 05:12:45,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 42 flow [2020-10-16 05:12:45,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:45,575 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 37 flow [2020-10-16 05:12:45,578 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2020-10-16 05:12:45,579 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2020-10-16 05:12:45,580 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 37 flow [2020-10-16 05:12:45,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:45,580 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:45,580 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:45,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:12:45,581 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-10-16 05:12:45,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:45,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641377106] [2020-10-16 05:12:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:45,655 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 05:12:45,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641377106] [2020-10-16 05:12:45,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:45,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:45,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636027998] [2020-10-16 05:12:45,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:45,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:45,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:45,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:45,663 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 98 [2020-10-16 05:12:45,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states. [2020-10-16 05:12:45,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:45,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 98 [2020-10-16 05:12:45,664 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:45,685 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2020-10-16 05:12:45,685 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:12:45,686 INFO L80 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 14 events. 1/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 23. Up to 3 conditions per place. [2020-10-16 05:12:45,686 INFO L132 encePairwiseOnDemand]: 95/98 looper letters, 2 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2020-10-16 05:12:45,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 11 transitions, 43 flow [2020-10-16 05:12:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2020-10-16 05:12:45,690 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7372448979591837 [2020-10-16 05:12:45,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 289 transitions. [2020-10-16 05:12:45,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 289 transitions. [2020-10-16 05:12:45,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:45,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 289 transitions. [2020-10-16 05:12:45,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:45,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:45,695 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:45,695 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states and 289 transitions. [2020-10-16 05:12:45,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 11 transitions, 43 flow [2020-10-16 05:12:45,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 37 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:12:45,697 INFO L241 Difference]: Finished difference. Result has 18 places, 10 transitions, 31 flow [2020-10-16 05:12:45,697 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=31, PETRI_PLACES=18, PETRI_TRANSITIONS=10} [2020-10-16 05:12:45,698 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2020-10-16 05:12:45,698 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 31 flow [2020-10-16 05:12:45,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:45,698 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:45,698 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:45,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:12:45,699 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:45,699 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-10-16 05:12:45,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:45,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302151082] [2020-10-16 05:12:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:45,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:45,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:45,779 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:12:45,780 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:12:45,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:12:45,785 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:12:45,787 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 05:12:45,799 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,799 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,799 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,800 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,800 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,800 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,800 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,800 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,801 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,801 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,802 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,802 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,802 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,806 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,807 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,818 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,818 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,822 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,825 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,825 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,826 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,826 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,828 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,828 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,829 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,829 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:12:45,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:45,836 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:45,836 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:45,838 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:45,838 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:45,838 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:45,839 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:45,839 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:45,844 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 05:12:45,873 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-16 05:12:45,873 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:12:45,875 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-10-16 05:12:45,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 05:12:45,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 57 transitions, 129 flow [2020-10-16 05:12:45,876 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:45,876 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 57 transitions, 129 flow [2020-10-16 05:12:45,877 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 57 transitions, 129 flow [2020-10-16 05:12:45,877 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 57 transitions, 129 flow [2020-10-16 05:12:45,904 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-16 05:12:45,904 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:12:45,908 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2020-10-16 05:12:45,910 INFO L117 LiptonReduction]: Number of co-enabled transitions 1108 [2020-10-16 05:12:46,797 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 05:12:46,909 INFO L132 LiptonReduction]: Checked pairs total: 1246 [2020-10-16 05:12:46,909 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-16 05:12:46,909 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1033 [2020-10-16 05:12:46,911 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 05:12:46,912 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:46,912 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:46,912 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:12:46,912 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:46,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:46,913 INFO L82 PathProgramCache]: Analyzing trace with hash 340131, now seen corresponding path program 1 times [2020-10-16 05:12:46,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:46,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21719702] [2020-10-16 05:12:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:46,973 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 05:12:46,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21719702] [2020-10-16 05:12:46,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:46,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:46,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969812177] [2020-10-16 05:12:46,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:46,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:46,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:46,977 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 118 [2020-10-16 05:12:46,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states. [2020-10-16 05:12:46,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:46,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 118 [2020-10-16 05:12:46,978 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:47,005 INFO L129 PetriNetUnfolder]: 20/58 cut-off events. [2020-10-16 05:12:47,005 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:12:47,006 INFO L80 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 58 events. 20/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 156 event pairs, 6 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 105. Up to 31 conditions per place. [2020-10-16 05:12:47,006 INFO L132 encePairwiseOnDemand]: 114/118 looper letters, 9 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 05:12:47,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 81 flow [2020-10-16 05:12:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2020-10-16 05:12:47,010 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.748587570621469 [2020-10-16 05:12:47,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2020-10-16 05:12:47,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2020-10-16 05:12:47,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:47,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2020-10-16 05:12:47,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:47,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:47,013 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:47,013 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states and 265 transitions. [2020-10-16 05:12:47,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 81 flow [2020-10-16 05:12:47,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 78 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:47,015 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 63 flow [2020-10-16 05:12:47,015 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2020-10-16 05:12:47,015 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2020-10-16 05:12:47,016 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 63 flow [2020-10-16 05:12:47,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:47,016 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:47,016 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:47,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:12:47,016 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:47,017 INFO L82 PathProgramCache]: Analyzing trace with hash 361225747, now seen corresponding path program 1 times [2020-10-16 05:12:47,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:47,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934245923] [2020-10-16 05:12:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:47,053 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 05:12:47,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934245923] [2020-10-16 05:12:47,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:47,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:47,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53896855] [2020-10-16 05:12:47,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:47,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:47,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:47,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:47,057 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 118 [2020-10-16 05:12:47,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 63 flow. Second operand 5 states. [2020-10-16 05:12:47,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:47,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 118 [2020-10-16 05:12:47,058 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:47,125 INFO L129 PetriNetUnfolder]: 18/64 cut-off events. [2020-10-16 05:12:47,125 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:12:47,126 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 64 events. 18/64 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 187 event pairs, 4 based on Foata normal form. 3/60 useless extension candidates. Maximal degree in co-relation 148. Up to 22 conditions per place. [2020-10-16 05:12:47,127 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 13 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2020-10-16 05:12:47,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 130 flow [2020-10-16 05:12:47,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2020-10-16 05:12:47,130 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7245762711864406 [2020-10-16 05:12:47,130 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2020-10-16 05:12:47,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2020-10-16 05:12:47,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:47,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2020-10-16 05:12:47,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:47,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:47,135 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:47,135 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 63 flow. Second operand 6 states and 513 transitions. [2020-10-16 05:12:47,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 130 flow [2020-10-16 05:12:47,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:47,137 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 99 flow [2020-10-16 05:12:47,137 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 05:12:47,138 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2020-10-16 05:12:47,138 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 99 flow [2020-10-16 05:12:47,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:47,138 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:47,138 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:47,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:12:47,139 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:47,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:47,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1537782149, now seen corresponding path program 1 times [2020-10-16 05:12:47,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:47,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378712098] [2020-10-16 05:12:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:47,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378712098] [2020-10-16 05:12:47,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:47,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:47,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576978925] [2020-10-16 05:12:47,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:47,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:47,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:47,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:47,181 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 118 [2020-10-16 05:12:47,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 99 flow. Second operand 5 states. [2020-10-16 05:12:47,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:47,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 118 [2020-10-16 05:12:47,182 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:47,251 INFO L129 PetriNetUnfolder]: 22/82 cut-off events. [2020-10-16 05:12:47,251 INFO L130 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2020-10-16 05:12:47,252 INFO L80 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 82 events. 22/82 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 286 event pairs, 5 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 222. Up to 21 conditions per place. [2020-10-16 05:12:47,253 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 14 selfloop transitions, 9 changer transitions 0/31 dead transitions. [2020-10-16 05:12:47,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 188 flow [2020-10-16 05:12:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 514 transitions. [2020-10-16 05:12:47,256 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7259887005649718 [2020-10-16 05:12:47,256 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 514 transitions. [2020-10-16 05:12:47,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 514 transitions. [2020-10-16 05:12:47,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:47,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 514 transitions. [2020-10-16 05:12:47,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:47,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:47,261 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:47,261 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 99 flow. Second operand 6 states and 514 transitions. [2020-10-16 05:12:47,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 188 flow [2020-10-16 05:12:47,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 177 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:47,264 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 141 flow [2020-10-16 05:12:47,265 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2020-10-16 05:12:47,265 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2020-10-16 05:12:47,265 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 141 flow [2020-10-16 05:12:47,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:47,265 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:47,266 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:47,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:12:47,266 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:47,267 INFO L82 PathProgramCache]: Analyzing trace with hash -429286856, now seen corresponding path program 1 times [2020-10-16 05:12:47,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:47,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845350092] [2020-10-16 05:12:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:47,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:47,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:47,310 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:12:47,310 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:12:47,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:12:47,312 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:12:47,313 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 05:12:47,324 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,324 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,324 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,324 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,325 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,325 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,325 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,325 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,325 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,326 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,326 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,326 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,326 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,326 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,327 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,327 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,327 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,327 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,328 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,328 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,328 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,328 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,328 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,328 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,329 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,329 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,329 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,330 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,331 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,331 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,332 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,337 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,337 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,351 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,351 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,351 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,354 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,355 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,355 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,355 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,355 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,357 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,357 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,357 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,357 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,357 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,359 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,359 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,359 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,359 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,359 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,360 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,361 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,361 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,361 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,361 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,362 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,362 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,363 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,363 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,363 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,363 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,364 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,364 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:47,365 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 05:12:47,365 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:47,365 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:47,365 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:47,366 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:47,366 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:47,366 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:47,366 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:47,366 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:47,369 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-10-16 05:12:47,380 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-16 05:12:47,380 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:12:47,381 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-10-16 05:12:47,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 87 transitions, 216 flow [2020-10-16 05:12:47,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 64 transitions, 152 flow [2020-10-16 05:12:47,382 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:47,382 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 64 transitions, 152 flow [2020-10-16 05:12:47,382 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 64 transitions, 152 flow [2020-10-16 05:12:47,382 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 64 transitions, 152 flow [2020-10-16 05:12:47,392 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-16 05:12:47,392 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:12:47,393 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2020-10-16 05:12:47,395 INFO L117 LiptonReduction]: Number of co-enabled transitions 1608 [2020-10-16 05:12:48,364 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 05:12:48,429 INFO L132 LiptonReduction]: Checked pairs total: 2267 [2020-10-16 05:12:48,429 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-16 05:12:48,429 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1047 [2020-10-16 05:12:48,430 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 05:12:48,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:48,431 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:48,431 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:12:48,431 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:48,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:48,432 INFO L82 PathProgramCache]: Analyzing trace with hash 498794, now seen corresponding path program 1 times [2020-10-16 05:12:48,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:48,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715556755] [2020-10-16 05:12:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:48,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715556755] [2020-10-16 05:12:48,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:48,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:48,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947062480] [2020-10-16 05:12:48,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:48,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:48,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:48,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:48,458 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 139 [2020-10-16 05:12:48,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states. [2020-10-16 05:12:48,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:48,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 139 [2020-10-16 05:12:48,458 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:48,533 INFO L129 PetriNetUnfolder]: 112/205 cut-off events. [2020-10-16 05:12:48,533 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:12:48,534 INFO L80 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 205 events. 112/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 724 event pairs, 43 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 399. Up to 153 conditions per place. [2020-10-16 05:12:48,536 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 12 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2020-10-16 05:12:48,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 108 flow [2020-10-16 05:12:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2020-10-16 05:12:48,539 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7386091127098321 [2020-10-16 05:12:48,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2020-10-16 05:12:48,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2020-10-16 05:12:48,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:48,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2020-10-16 05:12:48,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:48,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:48,542 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:48,542 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states and 308 transitions. [2020-10-16 05:12:48,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 108 flow [2020-10-16 05:12:48,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 101 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:48,544 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 81 flow [2020-10-16 05:12:48,544 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2020-10-16 05:12:48,544 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 05:12:48,545 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 81 flow [2020-10-16 05:12:48,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:48,545 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:48,545 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:48,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:12:48,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:48,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:48,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1496123826, now seen corresponding path program 1 times [2020-10-16 05:12:48,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:48,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862259399] [2020-10-16 05:12:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:48,583 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 05:12:48,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862259399] [2020-10-16 05:12:48,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:48,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:48,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412933689] [2020-10-16 05:12:48,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:48,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:48,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:48,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:48,586 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 139 [2020-10-16 05:12:48,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 81 flow. Second operand 5 states. [2020-10-16 05:12:48,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:48,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 139 [2020-10-16 05:12:48,587 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:48,699 INFO L129 PetriNetUnfolder]: 136/271 cut-off events. [2020-10-16 05:12:48,699 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-16 05:12:48,700 INFO L80 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 271 events. 136/271 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1144 event pairs, 34 based on Foata normal form. 9/258 useless extension candidates. Maximal degree in co-relation 678. Up to 124 conditions per place. [2020-10-16 05:12:48,703 INFO L132 encePairwiseOnDemand]: 133/139 looper letters, 24 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2020-10-16 05:12:48,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 209 flow [2020-10-16 05:12:48,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:48,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 605 transitions. [2020-10-16 05:12:48,707 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7254196642685852 [2020-10-16 05:12:48,707 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 605 transitions. [2020-10-16 05:12:48,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 605 transitions. [2020-10-16 05:12:48,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:48,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 605 transitions. [2020-10-16 05:12:48,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:48,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:48,712 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:48,712 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 81 flow. Second operand 6 states and 605 transitions. [2020-10-16 05:12:48,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 209 flow [2020-10-16 05:12:48,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:48,716 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 142 flow [2020-10-16 05:12:48,716 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2020-10-16 05:12:48,717 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2020-10-16 05:12:48,717 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 142 flow [2020-10-16 05:12:48,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:48,717 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:48,718 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:48,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:12:48,718 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:48,719 INFO L82 PathProgramCache]: Analyzing trace with hash 407975478, now seen corresponding path program 1 times [2020-10-16 05:12:48,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:48,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467350809] [2020-10-16 05:12:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:48,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467350809] [2020-10-16 05:12:48,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:48,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:48,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319712779] [2020-10-16 05:12:48,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:48,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:48,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:48,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:48,782 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 139 [2020-10-16 05:12:48,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 142 flow. Second operand 5 states. [2020-10-16 05:12:48,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:48,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 139 [2020-10-16 05:12:48,783 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:48,896 INFO L129 PetriNetUnfolder]: 159/369 cut-off events. [2020-10-16 05:12:48,896 INFO L130 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2020-10-16 05:12:48,898 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 369 events. 159/369 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1968 event pairs, 46 based on Foata normal form. 13/352 useless extension candidates. Maximal degree in co-relation 1152. Up to 166 conditions per place. [2020-10-16 05:12:48,901 INFO L132 encePairwiseOnDemand]: 133/139 looper letters, 30 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2020-10-16 05:12:48,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 359 flow [2020-10-16 05:12:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2020-10-16 05:12:48,904 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7194244604316546 [2020-10-16 05:12:48,905 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2020-10-16 05:12:48,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2020-10-16 05:12:48,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:48,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2020-10-16 05:12:48,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:48,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:48,909 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:48,909 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 142 flow. Second operand 6 states and 600 transitions. [2020-10-16 05:12:48,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 359 flow [2020-10-16 05:12:48,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 338 flow, removed 4 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:48,913 INFO L241 Difference]: Finished difference. Result has 44 places, 37 transitions, 244 flow [2020-10-16 05:12:48,914 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2020-10-16 05:12:48,914 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2020-10-16 05:12:48,914 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 244 flow [2020-10-16 05:12:48,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:48,914 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:48,915 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:48,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:12:48,915 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:48,915 INFO L82 PathProgramCache]: Analyzing trace with hash -689102574, now seen corresponding path program 1 times [2020-10-16 05:12:48,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:48,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386002560] [2020-10-16 05:12:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:48,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386002560] [2020-10-16 05:12:48,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075934207] [2020-10-16 05:12:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:49,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:12:49,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:12:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:49,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:12:49,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:12:49,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834306598] [2020-10-16 05:12:49,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:12:49,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:49,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:12:49,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:12:49,099 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 139 [2020-10-16 05:12:49,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 244 flow. Second operand 9 states. [2020-10-16 05:12:49,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:49,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 139 [2020-10-16 05:12:49,100 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:49,330 INFO L129 PetriNetUnfolder]: 158/379 cut-off events. [2020-10-16 05:12:49,330 INFO L130 PetriNetUnfolder]: For 646/646 co-relation queries the response was YES. [2020-10-16 05:12:49,332 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 379 events. 158/379 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2067 event pairs, 30 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 1409. Up to 146 conditions per place. [2020-10-16 05:12:49,336 INFO L132 encePairwiseOnDemand]: 132/139 looper letters, 39 selfloop transitions, 29 changer transitions 0/76 dead transitions. [2020-10-16 05:12:49,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 558 flow [2020-10-16 05:12:49,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:49,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1262 transitions. [2020-10-16 05:12:49,341 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6983951300498064 [2020-10-16 05:12:49,341 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1262 transitions. [2020-10-16 05:12:49,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1262 transitions. [2020-10-16 05:12:49,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:49,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1262 transitions. [2020-10-16 05:12:49,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:49,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:49,349 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:49,349 INFO L185 Difference]: Start difference. First operand has 44 places, 37 transitions, 244 flow. Second operand 13 states and 1262 transitions. [2020-10-16 05:12:49,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 558 flow [2020-10-16 05:12:49,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 542 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:49,357 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 388 flow [2020-10-16 05:12:49,357 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=388, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2020-10-16 05:12:49,357 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2020-10-16 05:12:49,358 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 388 flow [2020-10-16 05:12:49,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:12:49,358 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:49,358 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:49,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 05:12:49,572 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:49,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1222415634, now seen corresponding path program 2 times [2020-10-16 05:12:49,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:49,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041639520] [2020-10-16 05:12:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:49,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041639520] [2020-10-16 05:12:49,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:49,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:49,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578861694] [2020-10-16 05:12:49,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:49,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:49,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:49,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:49,624 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 139 [2020-10-16 05:12:49,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 388 flow. Second operand 7 states. [2020-10-16 05:12:49,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:49,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 139 [2020-10-16 05:12:49,625 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:49,869 INFO L129 PetriNetUnfolder]: 156/387 cut-off events. [2020-10-16 05:12:49,869 INFO L130 PetriNetUnfolder]: For 1045/1045 co-relation queries the response was YES. [2020-10-16 05:12:49,871 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 387 events. 156/387 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2175 event pairs, 33 based on Foata normal form. 3/367 useless extension candidates. Maximal degree in co-relation 1637. Up to 126 conditions per place. [2020-10-16 05:12:49,874 INFO L132 encePairwiseOnDemand]: 132/139 looper letters, 40 selfloop transitions, 32 changer transitions 0/80 dead transitions. [2020-10-16 05:12:49,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 681 flow [2020-10-16 05:12:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1262 transitions. [2020-10-16 05:12:49,879 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6983951300498064 [2020-10-16 05:12:49,879 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1262 transitions. [2020-10-16 05:12:49,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1262 transitions. [2020-10-16 05:12:49,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:49,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1262 transitions. [2020-10-16 05:12:49,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:49,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:49,887 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:49,888 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 388 flow. Second operand 13 states and 1262 transitions. [2020-10-16 05:12:49,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 681 flow [2020-10-16 05:12:49,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 618 flow, removed 6 selfloop flow, removed 7 redundant places. [2020-10-16 05:12:49,899 INFO L241 Difference]: Finished difference. Result has 66 places, 52 transitions, 455 flow [2020-10-16 05:12:49,899 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=455, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2020-10-16 05:12:49,899 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2020-10-16 05:12:49,899 INFO L481 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 455 flow [2020-10-16 05:12:49,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:49,900 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:49,900 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:49,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 05:12:49,900 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash 38946908, now seen corresponding path program 1 times [2020-10-16 05:12:49,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:49,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285628725] [2020-10-16 05:12:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:12:49,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285628725] [2020-10-16 05:12:49,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:49,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:49,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107375441] [2020-10-16 05:12:49,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:49,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:49,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:49,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:49,944 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 139 [2020-10-16 05:12:49,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 455 flow. Second operand 5 states. [2020-10-16 05:12:49,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:49,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 139 [2020-10-16 05:12:49,946 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:50,125 INFO L129 PetriNetUnfolder]: 193/509 cut-off events. [2020-10-16 05:12:50,126 INFO L130 PetriNetUnfolder]: For 1975/2003 co-relation queries the response was YES. [2020-10-16 05:12:50,130 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 509 events. 193/509 cut-off events. For 1975/2003 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3298 event pairs, 44 based on Foata normal form. 25/507 useless extension candidates. Maximal degree in co-relation 2208. Up to 197 conditions per place. [2020-10-16 05:12:50,136 INFO L132 encePairwiseOnDemand]: 133/139 looper letters, 56 selfloop transitions, 30 changer transitions 0/95 dead transitions. [2020-10-16 05:12:50,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 1023 flow [2020-10-16 05:12:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2020-10-16 05:12:50,139 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7266187050359713 [2020-10-16 05:12:50,139 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2020-10-16 05:12:50,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2020-10-16 05:12:50,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:50,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2020-10-16 05:12:50,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:50,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:50,145 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:50,145 INFO L185 Difference]: Start difference. First operand has 66 places, 52 transitions, 455 flow. Second operand 6 states and 606 transitions. [2020-10-16 05:12:50,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 1023 flow [2020-10-16 05:12:50,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 95 transitions, 910 flow, removed 10 selfloop flow, removed 9 redundant places. [2020-10-16 05:12:50,176 INFO L241 Difference]: Finished difference. Result has 65 places, 73 transitions, 739 flow [2020-10-16 05:12:50,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2020-10-16 05:12:50,177 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2020-10-16 05:12:50,177 INFO L481 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 739 flow [2020-10-16 05:12:50,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:50,177 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:50,177 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:50,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 05:12:50,178 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:50,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:50,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1203907673, now seen corresponding path program 1 times [2020-10-16 05:12:50,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:50,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076930594] [2020-10-16 05:12:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:50,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:50,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:50,208 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:12:50,209 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:12:50,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 05:12:50,210 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:12:50,210 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 05:12:50,226 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,226 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,228 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,229 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,229 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,230 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,230 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,231 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,231 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,232 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,232 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,233 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,233 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,233 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,234 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,234 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,234 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,234 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,235 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,235 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,235 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,235 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,236 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,236 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,236 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,236 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,236 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,237 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,237 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,238 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,238 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,238 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,238 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,238 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,239 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,239 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,239 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,239 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,240 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,240 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,240 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,240 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,241 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,241 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,241 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,241 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,241 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,241 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,243 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,243 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,243 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,244 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,244 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,244 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,244 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,247 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,248 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,248 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,248 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,248 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,250 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,251 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,251 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,251 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,251 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,253 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,254 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,254 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,254 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,256 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,257 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,257 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:50,267 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 05:12:50,268 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:50,268 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:50,268 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:50,268 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:50,268 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:50,268 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:50,269 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:50,269 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:50,271 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-10-16 05:12:50,287 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-16 05:12:50,287 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:12:50,288 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 212 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-10-16 05:12:50,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 105 transitions, 274 flow [2020-10-16 05:12:50,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 71 transitions, 177 flow [2020-10-16 05:12:50,289 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:50,289 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 71 transitions, 177 flow [2020-10-16 05:12:50,290 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 71 transitions, 177 flow [2020-10-16 05:12:50,290 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 71 transitions, 177 flow [2020-10-16 05:12:50,304 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-16 05:12:50,304 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:12:50,306 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 130. Up to 10 conditions per place. [2020-10-16 05:12:50,311 INFO L117 LiptonReduction]: Number of co-enabled transitions 2192 [2020-10-16 05:12:51,242 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 05:12:51,320 INFO L132 LiptonReduction]: Checked pairs total: 2992 [2020-10-16 05:12:51,320 INFO L134 LiptonReduction]: Total number of compositions: 55 [2020-10-16 05:12:51,320 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1031 [2020-10-16 05:12:51,322 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 05:12:51,322 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:51,322 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:51,322 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:12:51,322 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:51,322 INFO L82 PathProgramCache]: Analyzing trace with hash 673501, now seen corresponding path program 1 times [2020-10-16 05:12:51,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:51,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715429810] [2020-10-16 05:12:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:51,335 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 05:12:51,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715429810] [2020-10-16 05:12:51,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:51,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:51,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887175383] [2020-10-16 05:12:51,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:51,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:51,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:51,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:51,338 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 160 [2020-10-16 05:12:51,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states. [2020-10-16 05:12:51,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:51,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 160 [2020-10-16 05:12:51,339 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:51,455 INFO L129 PetriNetUnfolder]: 504/756 cut-off events. [2020-10-16 05:12:51,456 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:12:51,458 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 756 events. 504/756 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3091 event pairs, 233 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1502. Up to 651 conditions per place. [2020-10-16 05:12:51,465 INFO L132 encePairwiseOnDemand]: 154/160 looper letters, 15 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2020-10-16 05:12:51,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 137 flow [2020-10-16 05:12:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2020-10-16 05:12:51,468 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7375 [2020-10-16 05:12:51,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2020-10-16 05:12:51,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2020-10-16 05:12:51,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:51,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2020-10-16 05:12:51,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:51,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:51,470 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:51,471 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states and 354 transitions. [2020-10-16 05:12:51,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 137 flow [2020-10-16 05:12:51,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 124 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:51,472 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 99 flow [2020-10-16 05:12:51,473 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2020-10-16 05:12:51,473 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 05:12:51,473 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 99 flow [2020-10-16 05:12:51,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:51,473 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:51,473 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:51,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 05:12:51,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:51,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:51,474 INFO L82 PathProgramCache]: Analyzing trace with hash 979170514, now seen corresponding path program 1 times [2020-10-16 05:12:51,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:51,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078820300] [2020-10-16 05:12:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:51,501 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 05:12:51,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078820300] [2020-10-16 05:12:51,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:51,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:51,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838438680] [2020-10-16 05:12:51,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:51,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:51,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:51,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:51,504 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 160 [2020-10-16 05:12:51,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 99 flow. Second operand 5 states. [2020-10-16 05:12:51,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:51,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 160 [2020-10-16 05:12:51,504 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:51,694 INFO L129 PetriNetUnfolder]: 732/1148 cut-off events. [2020-10-16 05:12:51,694 INFO L130 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2020-10-16 05:12:51,699 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1148 events. 732/1148 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5685 event pairs, 134 based on Foata normal form. 27/1106 useless extension candidates. Maximal degree in co-relation 2914. Up to 568 conditions per place. [2020-10-16 05:12:51,713 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 31 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2020-10-16 05:12:51,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 268 flow [2020-10-16 05:12:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 693 transitions. [2020-10-16 05:12:51,717 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.721875 [2020-10-16 05:12:51,717 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 693 transitions. [2020-10-16 05:12:51,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 693 transitions. [2020-10-16 05:12:51,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:51,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 693 transitions. [2020-10-16 05:12:51,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:51,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:51,724 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:51,724 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 99 flow. Second operand 6 states and 693 transitions. [2020-10-16 05:12:51,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 268 flow [2020-10-16 05:12:51,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:51,728 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 179 flow [2020-10-16 05:12:51,729 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2020-10-16 05:12:51,729 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2020-10-16 05:12:51,729 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 179 flow [2020-10-16 05:12:51,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:51,729 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:51,729 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:51,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 05:12:51,730 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:51,730 INFO L82 PathProgramCache]: Analyzing trace with hash 963155286, now seen corresponding path program 1 times [2020-10-16 05:12:51,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:51,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010786718] [2020-10-16 05:12:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:51,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010786718] [2020-10-16 05:12:51,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:51,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:51,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006746325] [2020-10-16 05:12:51,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:51,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:51,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:51,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:51,781 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 160 [2020-10-16 05:12:51,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 179 flow. Second operand 5 states. [2020-10-16 05:12:51,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:51,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 160 [2020-10-16 05:12:51,782 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:52,073 INFO L129 PetriNetUnfolder]: 1039/1744 cut-off events. [2020-10-16 05:12:52,073 INFO L130 PetriNetUnfolder]: For 1188/1188 co-relation queries the response was YES. [2020-10-16 05:12:52,081 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5632 conditions, 1744 events. 1039/1744 cut-off events. For 1188/1188 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10196 event pairs, 319 based on Foata normal form. 41/1697 useless extension candidates. Maximal degree in co-relation 5614. Up to 890 conditions per place. [2020-10-16 05:12:52,098 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 39 selfloop transitions, 20 changer transitions 0/69 dead transitions. [2020-10-16 05:12:52,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 466 flow [2020-10-16 05:12:52,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 694 transitions. [2020-10-16 05:12:52,101 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2020-10-16 05:12:52,102 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 694 transitions. [2020-10-16 05:12:52,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 694 transitions. [2020-10-16 05:12:52,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:52,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 694 transitions. [2020-10-16 05:12:52,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:52,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:52,107 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:52,107 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 179 flow. Second operand 6 states and 694 transitions. [2020-10-16 05:12:52,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 466 flow [2020-10-16 05:12:52,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 435 flow, removed 6 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:52,116 INFO L241 Difference]: Finished difference. Result has 49 places, 46 transitions, 311 flow [2020-10-16 05:12:52,116 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2020-10-16 05:12:52,116 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2020-10-16 05:12:52,116 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 311 flow [2020-10-16 05:12:52,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:52,117 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:52,117 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:52,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 05:12:52,117 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:52,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1828752198, now seen corresponding path program 1 times [2020-10-16 05:12:52,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:52,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261252328] [2020-10-16 05:12:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:52,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261252328] [2020-10-16 05:12:52,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296794015] [2020-10-16 05:12:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:52,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:12:52,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:12:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:52,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:12:52,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 05:12:52,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099522330] [2020-10-16 05:12:52,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:52,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:52,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:52,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:52,247 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2020-10-16 05:12:52,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 311 flow. Second operand 7 states. [2020-10-16 05:12:52,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:52,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2020-10-16 05:12:52,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:52,638 INFO L129 PetriNetUnfolder]: 1080/1842 cut-off events. [2020-10-16 05:12:52,638 INFO L130 PetriNetUnfolder]: For 3046/3046 co-relation queries the response was YES. [2020-10-16 05:12:52,648 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7053 conditions, 1842 events. 1080/1842 cut-off events. For 3046/3046 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11055 event pairs, 235 based on Foata normal form. 9/1775 useless extension candidates. Maximal degree in co-relation 7032. Up to 817 conditions per place. [2020-10-16 05:12:52,668 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 61 selfloop transitions, 38 changer transitions 0/108 dead transitions. [2020-10-16 05:12:52,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 787 flow [2020-10-16 05:12:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1461 transitions. [2020-10-16 05:12:52,674 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7024038461538461 [2020-10-16 05:12:52,674 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1461 transitions. [2020-10-16 05:12:52,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1461 transitions. [2020-10-16 05:12:52,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:52,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1461 transitions. [2020-10-16 05:12:52,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:52,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:52,683 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:52,683 INFO L185 Difference]: Start difference. First operand has 49 places, 46 transitions, 311 flow. Second operand 13 states and 1461 transitions. [2020-10-16 05:12:52,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 787 flow [2020-10-16 05:12:52,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 108 transitions, 761 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:52,699 INFO L241 Difference]: Finished difference. Result has 63 places, 59 transitions, 496 flow [2020-10-16 05:12:52,699 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2020-10-16 05:12:52,699 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2020-10-16 05:12:52,699 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 496 flow [2020-10-16 05:12:52,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:52,700 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:52,700 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:52,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 05:12:52,915 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:52,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash -2120698438, now seen corresponding path program 2 times [2020-10-16 05:12:52,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:52,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638674981] [2020-10-16 05:12:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:52,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638674981] [2020-10-16 05:12:52,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:52,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:52,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602164129] [2020-10-16 05:12:52,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:52,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:52,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:52,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:52,969 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2020-10-16 05:12:52,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 496 flow. Second operand 7 states. [2020-10-16 05:12:52,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:52,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2020-10-16 05:12:52,970 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:53,380 INFO L129 PetriNetUnfolder]: 1120/1938 cut-off events. [2020-10-16 05:12:53,380 INFO L130 PetriNetUnfolder]: For 5488/5488 co-relation queries the response was YES. [2020-10-16 05:12:53,394 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8462 conditions, 1938 events. 1120/1938 cut-off events. For 5488/5488 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 12001 event pairs, 242 based on Foata normal form. 9/1877 useless extension candidates. Maximal degree in co-relation 8437. Up to 744 conditions per place. [2020-10-16 05:12:53,424 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 64 selfloop transitions, 43 changer transitions 0/116 dead transitions. [2020-10-16 05:12:53,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 984 flow [2020-10-16 05:12:53,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1461 transitions. [2020-10-16 05:12:53,432 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7024038461538461 [2020-10-16 05:12:53,432 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1461 transitions. [2020-10-16 05:12:53,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1461 transitions. [2020-10-16 05:12:53,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:53,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1461 transitions. [2020-10-16 05:12:53,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:53,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:53,444 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:53,444 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 496 flow. Second operand 13 states and 1461 transitions. [2020-10-16 05:12:53,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 984 flow [2020-10-16 05:12:53,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 900 flow, removed 8 selfloop flow, removed 7 redundant places. [2020-10-16 05:12:53,475 INFO L241 Difference]: Finished difference. Result has 71 places, 68 transitions, 613 flow [2020-10-16 05:12:53,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=613, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2020-10-16 05:12:53,476 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2020-10-16 05:12:53,476 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 613 flow [2020-10-16 05:12:53,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:53,476 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:53,476 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:53,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 05:12:53,477 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:53,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:53,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1204137406, now seen corresponding path program 1 times [2020-10-16 05:12:53,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:53,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034635818] [2020-10-16 05:12:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:12:53,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034635818] [2020-10-16 05:12:53,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:53,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:53,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257521483] [2020-10-16 05:12:53,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:53,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:53,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:53,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:53,530 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2020-10-16 05:12:53,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 613 flow. Second operand 5 states. [2020-10-16 05:12:53,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:53,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2020-10-16 05:12:53,531 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:53,987 INFO L129 PetriNetUnfolder]: 1531/2853 cut-off events. [2020-10-16 05:12:53,987 INFO L130 PetriNetUnfolder]: For 11084/11112 co-relation queries the response was YES. [2020-10-16 05:12:54,006 INFO L80 FinitePrefix]: Finished finitePrefix Result has 13859 conditions, 2853 events. 1531/2853 cut-off events. For 11084/11112 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 20892 event pairs, 465 based on Foata normal form. 74/2805 useless extension candidates. Maximal degree in co-relation 13832. Up to 1367 conditions per place. [2020-10-16 05:12:54,029 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 88 selfloop transitions, 40 changer transitions 0/138 dead transitions. [2020-10-16 05:12:54,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 138 transitions, 1538 flow [2020-10-16 05:12:54,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2020-10-16 05:12:54,031 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2020-10-16 05:12:54,031 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2020-10-16 05:12:54,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2020-10-16 05:12:54,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:54,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2020-10-16 05:12:54,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:54,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:54,035 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:54,035 INFO L185 Difference]: Start difference. First operand has 71 places, 68 transitions, 613 flow. Second operand 6 states and 700 transitions. [2020-10-16 05:12:54,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 138 transitions, 1538 flow [2020-10-16 05:12:54,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 1365 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-16 05:12:54,111 INFO L241 Difference]: Finished difference. Result has 70 places, 95 transitions, 962 flow [2020-10-16 05:12:54,111 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2020-10-16 05:12:54,112 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2020-10-16 05:12:54,112 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 962 flow [2020-10-16 05:12:54,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:54,112 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:54,112 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:54,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 05:12:54,112 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:54,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:54,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1563762778, now seen corresponding path program 1 times [2020-10-16 05:12:54,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:54,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895504931] [2020-10-16 05:12:54,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:12:54,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895504931] [2020-10-16 05:12:54,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979823453] [2020-10-16 05:12:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:54,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:12:54,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:12:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:12:54,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:12:54,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 05:12:54,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483230102] [2020-10-16 05:12:54,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:54,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:54,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:54,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:54,238 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 05:12:54,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 962 flow. Second operand 7 states. [2020-10-16 05:12:54,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:54,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 05:12:54,239 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:54,961 INFO L129 PetriNetUnfolder]: 1583/2947 cut-off events. [2020-10-16 05:12:54,961 INFO L130 PetriNetUnfolder]: For 14398/14432 co-relation queries the response was YES. [2020-10-16 05:12:54,985 INFO L80 FinitePrefix]: Finished finitePrefix Result has 15599 conditions, 2947 events. 1583/2947 cut-off events. For 14398/14432 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 21901 event pairs, 348 based on Foata normal form. 28/2904 useless extension candidates. Maximal degree in co-relation 15569. Up to 1118 conditions per place. [2020-10-16 05:12:55,015 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 92 selfloop transitions, 80 changer transitions 0/181 dead transitions. [2020-10-16 05:12:55,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 181 transitions, 1998 flow [2020-10-16 05:12:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1476 transitions. [2020-10-16 05:12:55,018 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7096153846153846 [2020-10-16 05:12:55,019 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1476 transitions. [2020-10-16 05:12:55,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1476 transitions. [2020-10-16 05:12:55,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:55,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1476 transitions. [2020-10-16 05:12:55,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:55,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:55,026 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:55,026 INFO L185 Difference]: Start difference. First operand has 70 places, 95 transitions, 962 flow. Second operand 13 states and 1476 transitions. [2020-10-16 05:12:55,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 181 transitions, 1998 flow [2020-10-16 05:12:55,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 181 transitions, 1933 flow, removed 28 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:55,161 INFO L241 Difference]: Finished difference. Result has 84 places, 121 transitions, 1430 flow [2020-10-16 05:12:55,161 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1430, PETRI_PLACES=84, PETRI_TRANSITIONS=121} [2020-10-16 05:12:55,161 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2020-10-16 05:12:55,162 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 121 transitions, 1430 flow [2020-10-16 05:12:55,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:55,162 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:55,162 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:55,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:55,377 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:55,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:55,377 INFO L82 PathProgramCache]: Analyzing trace with hash 160040113, now seen corresponding path program 1 times [2020-10-16 05:12:55,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:55,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823989783] [2020-10-16 05:12:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:55,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823989783] [2020-10-16 05:12:55,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470547789] [2020-10-16 05:12:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:55,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:12:55,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:12:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:55,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:12:55,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 05:12:55,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404106070] [2020-10-16 05:12:55,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:55,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:55,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:55,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:55,510 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 05:12:55,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 121 transitions, 1430 flow. Second operand 7 states. [2020-10-16 05:12:55,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:55,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 05:12:55,511 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:56,362 INFO L129 PetriNetUnfolder]: 1624/3077 cut-off events. [2020-10-16 05:12:56,362 INFO L130 PetriNetUnfolder]: For 20152/20152 co-relation queries the response was YES. [2020-10-16 05:12:56,386 INFO L80 FinitePrefix]: Finished finitePrefix Result has 17732 conditions, 3077 events. 1624/3077 cut-off events. For 20152/20152 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 23280 event pairs, 329 based on Foata normal form. 19/3021 useless extension candidates. Maximal degree in co-relation 17698. Up to 985 conditions per place. [2020-10-16 05:12:56,411 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 112 selfloop transitions, 91 changer transitions 0/212 dead transitions. [2020-10-16 05:12:56,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 212 transitions, 2659 flow [2020-10-16 05:12:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1477 transitions. [2020-10-16 05:12:56,414 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7100961538461539 [2020-10-16 05:12:56,414 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1477 transitions. [2020-10-16 05:12:56,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1477 transitions. [2020-10-16 05:12:56,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:56,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1477 transitions. [2020-10-16 05:12:56,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:56,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:56,419 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:56,420 INFO L185 Difference]: Start difference. First operand has 84 places, 121 transitions, 1430 flow. Second operand 13 states and 1477 transitions. [2020-10-16 05:12:56,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 212 transitions, 2659 flow [2020-10-16 05:12:56,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 212 transitions, 2574 flow, removed 26 selfloop flow, removed 3 redundant places. [2020-10-16 05:12:56,586 INFO L241 Difference]: Finished difference. Result has 96 places, 150 transitions, 1973 flow [2020-10-16 05:12:56,586 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1973, PETRI_PLACES=96, PETRI_TRANSITIONS=150} [2020-10-16 05:12:56,586 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2020-10-16 05:12:56,586 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 150 transitions, 1973 flow [2020-10-16 05:12:56,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:56,587 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:56,587 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:56,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:56,802 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:56,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:56,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1829836890, now seen corresponding path program 2 times [2020-10-16 05:12:56,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:56,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552871383] [2020-10-16 05:12:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:12:56,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552871383] [2020-10-16 05:12:56,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:56,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:56,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752607782] [2020-10-16 05:12:56,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:56,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:56,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:56,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:56,847 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 05:12:56,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 150 transitions, 1973 flow. Second operand 7 states. [2020-10-16 05:12:56,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:56,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 05:12:56,848 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:57,695 INFO L129 PetriNetUnfolder]: 1655/3150 cut-off events. [2020-10-16 05:12:57,695 INFO L130 PetriNetUnfolder]: For 26283/26317 co-relation queries the response was YES. [2020-10-16 05:12:57,717 INFO L80 FinitePrefix]: Finished finitePrefix Result has 19911 conditions, 3150 events. 1655/3150 cut-off events. For 26283/26317 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 24287 event pairs, 311 based on Foata normal form. 24/3122 useless extension candidates. Maximal degree in co-relation 19874. Up to 996 conditions per place. [2020-10-16 05:12:57,744 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 119 selfloop transitions, 100 changer transitions 0/228 dead transitions. [2020-10-16 05:12:57,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 228 transitions, 3123 flow [2020-10-16 05:12:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1476 transitions. [2020-10-16 05:12:57,747 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7096153846153846 [2020-10-16 05:12:57,747 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1476 transitions. [2020-10-16 05:12:57,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1476 transitions. [2020-10-16 05:12:57,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:57,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1476 transitions. [2020-10-16 05:12:57,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:57,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:57,752 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:57,753 INFO L185 Difference]: Start difference. First operand has 96 places, 150 transitions, 1973 flow. Second operand 13 states and 1476 transitions. [2020-10-16 05:12:57,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 228 transitions, 3123 flow [2020-10-16 05:12:58,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 228 transitions, 3059 flow, removed 30 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:58,038 INFO L241 Difference]: Finished difference. Result has 110 places, 167 transitions, 2420 flow [2020-10-16 05:12:58,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2420, PETRI_PLACES=110, PETRI_TRANSITIONS=167} [2020-10-16 05:12:58,039 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 76 predicate places. [2020-10-16 05:12:58,039 INFO L481 AbstractCegarLoop]: Abstraction has has 110 places, 167 transitions, 2420 flow [2020-10-16 05:12:58,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:58,039 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:58,039 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:58,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 05:12:58,040 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:58,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1829828303, now seen corresponding path program 2 times [2020-10-16 05:12:58,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:58,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264182729] [2020-10-16 05:12:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:58,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:12:58,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264182729] [2020-10-16 05:12:58,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:58,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:58,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560595772] [2020-10-16 05:12:58,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:58,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:58,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:58,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:58,106 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 05:12:58,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 167 transitions, 2420 flow. Second operand 7 states. [2020-10-16 05:12:58,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:58,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 05:12:58,107 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:59,042 INFO L129 PetriNetUnfolder]: 1696/3350 cut-off events. [2020-10-16 05:12:59,043 INFO L130 PetriNetUnfolder]: For 35247/35247 co-relation queries the response was YES. [2020-10-16 05:12:59,062 INFO L80 FinitePrefix]: Finished finitePrefix Result has 22414 conditions, 3350 events. 1696/3350 cut-off events. For 35247/35247 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 26423 event pairs, 367 based on Foata normal form. 19/3255 useless extension candidates. Maximal degree in co-relation 22373. Up to 1018 conditions per place. [2020-10-16 05:12:59,093 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 125 selfloop transitions, 113 changer transitions 0/247 dead transitions. [2020-10-16 05:12:59,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 247 transitions, 3717 flow [2020-10-16 05:12:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1477 transitions. [2020-10-16 05:12:59,097 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7100961538461539 [2020-10-16 05:12:59,098 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1477 transitions. [2020-10-16 05:12:59,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1477 transitions. [2020-10-16 05:12:59,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:59,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1477 transitions. [2020-10-16 05:12:59,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:59,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:59,103 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:59,103 INFO L185 Difference]: Start difference. First operand has 110 places, 167 transitions, 2420 flow. Second operand 13 states and 1477 transitions. [2020-10-16 05:12:59,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 247 transitions, 3717 flow [2020-10-16 05:12:59,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 247 transitions, 3470 flow, removed 29 selfloop flow, removed 9 redundant places. [2020-10-16 05:12:59,506 INFO L241 Difference]: Finished difference. Result has 116 places, 189 transitions, 2838 flow [2020-10-16 05:12:59,507 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2838, PETRI_PLACES=116, PETRI_TRANSITIONS=189} [2020-10-16 05:12:59,507 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2020-10-16 05:12:59,507 INFO L481 AbstractCegarLoop]: Abstraction has has 116 places, 189 transitions, 2838 flow [2020-10-16 05:12:59,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:59,507 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:59,508 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:59,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 05:12:59,508 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:59,508 INFO L82 PathProgramCache]: Analyzing trace with hash -916888880, now seen corresponding path program 1 times [2020-10-16 05:12:59,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:59,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132755053] [2020-10-16 05:12:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:12:59,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132755053] [2020-10-16 05:12:59,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:59,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:59,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535544240] [2020-10-16 05:12:59,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:59,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:59,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:59,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:59,575 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2020-10-16 05:12:59,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 189 transitions, 2838 flow. Second operand 5 states. [2020-10-16 05:12:59,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:59,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2020-10-16 05:12:59,575 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:00,454 INFO L129 PetriNetUnfolder]: 2404/4979 cut-off events. [2020-10-16 05:13:00,454 INFO L130 PetriNetUnfolder]: For 65735/66137 co-relation queries the response was YES. [2020-10-16 05:13:00,477 INFO L80 FinitePrefix]: Finished finitePrefix Result has 33364 conditions, 4979 events. 2404/4979 cut-off events. For 65735/66137 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 44377 event pairs, 601 based on Foata normal form. 151/5042 useless extension candidates. Maximal degree in co-relation 33320. Up to 2607 conditions per place. [2020-10-16 05:13:00,514 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 269 selfloop transitions, 89 changer transitions 0/368 dead transitions. [2020-10-16 05:13:00,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 368 transitions, 6406 flow [2020-10-16 05:13:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:13:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:13:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2020-10-16 05:13:00,516 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2020-10-16 05:13:00,516 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2020-10-16 05:13:00,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2020-10-16 05:13:00,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:00,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2020-10-16 05:13:00,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:13:00,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:13:00,519 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:13:00,519 INFO L185 Difference]: Start difference. First operand has 116 places, 189 transitions, 2838 flow. Second operand 6 states and 700 transitions. [2020-10-16 05:13:00,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 368 transitions, 6406 flow [2020-10-16 05:13:01,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 368 transitions, 6168 flow, removed 45 selfloop flow, removed 6 redundant places. [2020-10-16 05:13:01,177 INFO L241 Difference]: Finished difference. Result has 118 places, 257 transitions, 4245 flow [2020-10-16 05:13:01,178 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4245, PETRI_PLACES=118, PETRI_TRANSITIONS=257} [2020-10-16 05:13:01,178 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 84 predicate places. [2020-10-16 05:13:01,178 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 257 transitions, 4245 flow [2020-10-16 05:13:01,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:13:01,178 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:01,178 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:01,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-16 05:13:01,179 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:01,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1221556651, now seen corresponding path program 1 times [2020-10-16 05:13:01,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:01,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324644854] [2020-10-16 05:13:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:01,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324644854] [2020-10-16 05:13:01,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:01,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:13:01,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422826758] [2020-10-16 05:13:01,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:01,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:01,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:01,238 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:01,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 257 transitions, 4245 flow. Second operand 9 states. [2020-10-16 05:13:01,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:01,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:01,239 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:02,814 INFO L129 PetriNetUnfolder]: 2085/4347 cut-off events. [2020-10-16 05:13:02,814 INFO L130 PetriNetUnfolder]: For 59700/60462 co-relation queries the response was YES. [2020-10-16 05:13:02,840 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31859 conditions, 4347 events. 2085/4347 cut-off events. For 59700/60462 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 38644 event pairs, 274 based on Foata normal form. 33/4305 useless extension candidates. Maximal degree in co-relation 31812. Up to 1248 conditions per place. [2020-10-16 05:13:02,860 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 154 selfloop transitions, 244 changer transitions 0/406 dead transitions. [2020-10-16 05:13:02,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 406 transitions, 6854 flow [2020-10-16 05:13:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:02,865 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:02,865 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:02,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:02,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:02,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:02,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:02,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:02,876 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:02,876 INFO L185 Difference]: Start difference. First operand has 118 places, 257 transitions, 4245 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:02,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 406 transitions, 6854 flow [2020-10-16 05:13:03,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 406 transitions, 6475 flow, removed 183 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:03,782 INFO L241 Difference]: Finished difference. Result has 148 places, 290 transitions, 5180 flow [2020-10-16 05:13:03,782 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5180, PETRI_PLACES=148, PETRI_TRANSITIONS=290} [2020-10-16 05:13:03,783 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 114 predicate places. [2020-10-16 05:13:03,783 INFO L481 AbstractCegarLoop]: Abstraction has has 148 places, 290 transitions, 5180 flow [2020-10-16 05:13:03,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:03,783 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:03,783 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:03,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-16 05:13:03,784 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:03,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1225961131, now seen corresponding path program 2 times [2020-10-16 05:13:03,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:03,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108390028] [2020-10-16 05:13:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:03,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108390028] [2020-10-16 05:13:03,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:03,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:13:03,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389393268] [2020-10-16 05:13:03,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:03,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:03,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:03,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:03,853 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:03,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 290 transitions, 5180 flow. Second operand 9 states. [2020-10-16 05:13:03,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:03,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:03,854 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:05,047 INFO L129 PetriNetUnfolder]: 2084/4468 cut-off events. [2020-10-16 05:13:05,048 INFO L130 PetriNetUnfolder]: For 66261/66557 co-relation queries the response was YES. [2020-10-16 05:13:05,076 INFO L80 FinitePrefix]: Finished finitePrefix Result has 33215 conditions, 4468 events. 2084/4468 cut-off events. For 66261/66557 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 40234 event pairs, 289 based on Foata normal form. 41/4419 useless extension candidates. Maximal degree in co-relation 33164. Up to 1085 conditions per place. [2020-10-16 05:13:05,097 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 156 selfloop transitions, 253 changer transitions 0/417 dead transitions. [2020-10-16 05:13:05,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 417 transitions, 7334 flow [2020-10-16 05:13:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:05,102 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:05,102 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:05,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:05,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:05,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:05,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:05,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:05,112 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:05,112 INFO L185 Difference]: Start difference. First operand has 148 places, 290 transitions, 5180 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:05,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 417 transitions, 7334 flow [2020-10-16 05:13:06,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 417 transitions, 6849 flow, removed 32 selfloop flow, removed 20 redundant places. [2020-10-16 05:13:06,335 INFO L241 Difference]: Finished difference. Result has 159 places, 309 transitions, 5637 flow [2020-10-16 05:13:06,335 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5637, PETRI_PLACES=159, PETRI_TRANSITIONS=309} [2020-10-16 05:13:06,335 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 125 predicate places. [2020-10-16 05:13:06,336 INFO L481 AbstractCegarLoop]: Abstraction has has 159 places, 309 transitions, 5637 flow [2020-10-16 05:13:06,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:06,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:06,336 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:06,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-16 05:13:06,336 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:06,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:06,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1218502129, now seen corresponding path program 3 times [2020-10-16 05:13:06,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:06,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387618465] [2020-10-16 05:13:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:13:06,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387618465] [2020-10-16 05:13:06,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977010817] [2020-10-16 05:13:06,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:06,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-16 05:13:06,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:13:06,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:13:06,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:13:06,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:06,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 05:13:06,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152772786] [2020-10-16 05:13:06,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:06,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:06,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:06,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:06,468 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:06,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 309 transitions, 5637 flow. Second operand 9 states. [2020-10-16 05:13:06,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:06,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:06,469 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:07,735 INFO L129 PetriNetUnfolder]: 2083/4393 cut-off events. [2020-10-16 05:13:07,735 INFO L130 PetriNetUnfolder]: For 71932/72546 co-relation queries the response was YES. [2020-10-16 05:13:07,771 INFO L80 FinitePrefix]: Finished finitePrefix Result has 34447 conditions, 4393 events. 2083/4393 cut-off events. For 71932/72546 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 39287 event pairs, 266 based on Foata normal form. 31/4345 useless extension candidates. Maximal degree in co-relation 34395. Up to 1089 conditions per place. [2020-10-16 05:13:07,798 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 162 selfloop transitions, 265 changer transitions 0/435 dead transitions. [2020-10-16 05:13:07,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 435 transitions, 7866 flow [2020-10-16 05:13:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:07,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:07,803 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:07,803 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:07,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:07,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:07,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:07,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:07,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:07,813 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:07,813 INFO L185 Difference]: Start difference. First operand has 159 places, 309 transitions, 5637 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:07,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 435 transitions, 7866 flow [2020-10-16 05:13:08,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 435 transitions, 7426 flow, removed 28 selfloop flow, removed 19 redundant places. [2020-10-16 05:13:08,896 INFO L241 Difference]: Finished difference. Result has 171 places, 334 transitions, 6283 flow [2020-10-16 05:13:08,896 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6283, PETRI_PLACES=171, PETRI_TRANSITIONS=334} [2020-10-16 05:13:08,896 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 137 predicate places. [2020-10-16 05:13:08,897 INFO L481 AbstractCegarLoop]: Abstraction has has 171 places, 334 transitions, 6283 flow [2020-10-16 05:13:08,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:08,897 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:08,897 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:09,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 05:13:09,103 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:09,104 INFO L82 PathProgramCache]: Analyzing trace with hash -820266411, now seen corresponding path program 4 times [2020-10-16 05:13:09,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:09,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298250590] [2020-10-16 05:13:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:09,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298250590] [2020-10-16 05:13:09,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726880166] [2020-10-16 05:13:09,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:09,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 05:13:09,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:13:09,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:13:09,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:09,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:09,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 05:13:09,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223173127] [2020-10-16 05:13:09,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:09,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:09,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:09,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:09,239 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:09,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 334 transitions, 6283 flow. Second operand 9 states. [2020-10-16 05:13:09,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:09,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:09,240 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:10,550 INFO L129 PetriNetUnfolder]: 2082/4434 cut-off events. [2020-10-16 05:13:10,550 INFO L130 PetriNetUnfolder]: For 78471/78893 co-relation queries the response was YES. [2020-10-16 05:13:10,576 INFO L80 FinitePrefix]: Finished finitePrefix Result has 35717 conditions, 4434 events. 2082/4434 cut-off events. For 78471/78893 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 39934 event pairs, 253 based on Foata normal form. 46/4383 useless extension candidates. Maximal degree in co-relation 35662. Up to 1093 conditions per place. [2020-10-16 05:13:10,597 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 185 selfloop transitions, 266 changer transitions 0/459 dead transitions. [2020-10-16 05:13:10,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 459 transitions, 8589 flow [2020-10-16 05:13:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:10,606 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:10,606 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:10,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:10,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:10,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:10,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:10,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:10,615 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:10,615 INFO L185 Difference]: Start difference. First operand has 171 places, 334 transitions, 6283 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:10,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 459 transitions, 8589 flow [2020-10-16 05:13:11,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 459 transitions, 8157 flow, removed 26 selfloop flow, removed 19 redundant places. [2020-10-16 05:13:11,734 INFO L241 Difference]: Finished difference. Result has 183 places, 353 transitions, 6847 flow [2020-10-16 05:13:11,734 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=5865, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6847, PETRI_PLACES=183, PETRI_TRANSITIONS=353} [2020-10-16 05:13:11,734 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 149 predicate places. [2020-10-16 05:13:11,734 INFO L481 AbstractCegarLoop]: Abstraction has has 183 places, 353 transitions, 6847 flow [2020-10-16 05:13:11,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:11,735 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:11,735 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:11,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 05:13:11,936 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:11,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1831610987, now seen corresponding path program 5 times [2020-10-16 05:13:11,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:11,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406733823] [2020-10-16 05:13:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:11,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406733823] [2020-10-16 05:13:11,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:11,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:13:11,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246941563] [2020-10-16 05:13:11,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:11,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:11,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:11,990 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:11,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 353 transitions, 6847 flow. Second operand 9 states. [2020-10-16 05:13:11,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:11,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:11,991 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:13,391 INFO L129 PetriNetUnfolder]: 2081/4379 cut-off events. [2020-10-16 05:13:13,392 INFO L130 PetriNetUnfolder]: For 84786/85614 co-relation queries the response was YES. [2020-10-16 05:13:13,418 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36919 conditions, 4379 events. 2081/4379 cut-off events. For 84786/85614 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 39370 event pairs, 240 based on Foata normal form. 22/4357 useless extension candidates. Maximal degree in co-relation 36861. Up to 1097 conditions per place. [2020-10-16 05:13:13,440 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 191 selfloop transitions, 274 changer transitions 0/473 dead transitions. [2020-10-16 05:13:13,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 473 transitions, 9092 flow [2020-10-16 05:13:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:13,444 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:13,444 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:13,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:13,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:13,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:13,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:13,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:13,450 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:13,451 INFO L185 Difference]: Start difference. First operand has 183 places, 353 transitions, 6847 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:13,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 473 transitions, 9092 flow [2020-10-16 05:13:14,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 473 transitions, 8655 flow, removed 36 selfloop flow, removed 18 redundant places. [2020-10-16 05:13:14,704 INFO L241 Difference]: Finished difference. Result has 196 places, 374 transitions, 7438 flow [2020-10-16 05:13:14,705 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=6420, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7438, PETRI_PLACES=196, PETRI_TRANSITIONS=374} [2020-10-16 05:13:14,705 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 162 predicate places. [2020-10-16 05:13:14,705 INFO L481 AbstractCegarLoop]: Abstraction has has 196 places, 374 transitions, 7438 flow [2020-10-16 05:13:14,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:14,706 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:14,706 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:14,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 05:13:14,706 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:14,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1823367467, now seen corresponding path program 6 times [2020-10-16 05:13:14,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:14,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261654247] [2020-10-16 05:13:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:14,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261654247] [2020-10-16 05:13:14,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:14,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:13:14,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534203953] [2020-10-16 05:13:14,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:14,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:14,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:14,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:14,774 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:14,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 374 transitions, 7438 flow. Second operand 9 states. [2020-10-16 05:13:14,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:14,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:14,775 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:16,188 INFO L129 PetriNetUnfolder]: 2080/4480 cut-off events. [2020-10-16 05:13:16,188 INFO L130 PetriNetUnfolder]: For 92395/92793 co-relation queries the response was YES. [2020-10-16 05:13:16,215 INFO L80 FinitePrefix]: Finished finitePrefix Result has 38344 conditions, 4480 events. 2080/4480 cut-off events. For 92395/92793 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 40617 event pairs, 259 based on Foata normal form. 54/4461 useless extension candidates. Maximal degree in co-relation 38283. Up to 1101 conditions per place. [2020-10-16 05:13:16,238 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 193 selfloop transitions, 279 changer transitions 0/480 dead transitions. [2020-10-16 05:13:16,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 480 transitions, 9490 flow [2020-10-16 05:13:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:16,242 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:16,242 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:16,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:16,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:16,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:16,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:16,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:16,251 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:16,251 INFO L185 Difference]: Start difference. First operand has 196 places, 374 transitions, 7438 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:16,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 480 transitions, 9490 flow [2020-10-16 05:13:17,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 480 transitions, 9055 flow, removed 27 selfloop flow, removed 19 redundant places. [2020-10-16 05:13:17,570 INFO L241 Difference]: Finished difference. Result has 208 places, 387 transitions, 7889 flow [2020-10-16 05:13:17,570 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=7009, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7889, PETRI_PLACES=208, PETRI_TRANSITIONS=387} [2020-10-16 05:13:17,570 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 174 predicate places. [2020-10-16 05:13:17,571 INFO L481 AbstractCegarLoop]: Abstraction has has 208 places, 387 transitions, 7889 flow [2020-10-16 05:13:17,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:17,571 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:17,571 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:17,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 05:13:17,571 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:17,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:17,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1637118645, now seen corresponding path program 1 times [2020-10-16 05:13:17,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:17,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289399049] [2020-10-16 05:13:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:13:17,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:13:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:13:17,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:13:17,594 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:13:17,594 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:13:17,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 05:13:17,595 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:13:17,595 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 05:13:17,609 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,609 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,610 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,610 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,610 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,610 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,611 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,611 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,611 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,611 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,612 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,612 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,612 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,612 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,612 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,612 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,612 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,612 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,613 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,613 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,613 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,613 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,614 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,614 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,614 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,614 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,614 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,614 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,614 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,614 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,615 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,615 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,615 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,615 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,615 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,616 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,616 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,617 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,617 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,618 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,618 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,619 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,619 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,620 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,621 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,621 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,623 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,623 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,623 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,623 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,623 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,623 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,623 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,624 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,624 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,624 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,625 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,626 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,626 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,626 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,626 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,627 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,627 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,627 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,627 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,627 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,628 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,629 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,629 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,629 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,629 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,630 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,630 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,630 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,630 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,630 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,632 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,632 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,633 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,633 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,633 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,633 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,634 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,634 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,635 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,635 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,635 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,635 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,636 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,636 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,636 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,637 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,637 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,638 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,638 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,639 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:17,639 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 05:13:17,640 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:13:17,640 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:13:17,640 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:13:17,640 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:13:17,640 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:13:17,640 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:13:17,640 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:13:17,640 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:13:17,642 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-10-16 05:13:17,653 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-16 05:13:17,653 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 05:13:17,654 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-10-16 05:13:17,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 123 transitions, 336 flow [2020-10-16 05:13:17,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 78 transitions, 204 flow [2020-10-16 05:13:17,655 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:13:17,655 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 78 transitions, 204 flow [2020-10-16 05:13:17,655 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 78 transitions, 204 flow [2020-10-16 05:13:17,655 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 78 transitions, 204 flow [2020-10-16 05:13:17,662 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-16 05:13:17,663 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 05:13:17,663 INFO L80 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 282 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 159. Up to 12 conditions per place. [2020-10-16 05:13:17,666 INFO L117 LiptonReduction]: Number of co-enabled transitions 2860 [2020-10-16 05:13:18,642 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 05:13:18,712 INFO L132 LiptonReduction]: Checked pairs total: 3913 [2020-10-16 05:13:18,712 INFO L134 LiptonReduction]: Total number of compositions: 61 [2020-10-16 05:13:18,712 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1057 [2020-10-16 05:13:18,713 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 05:13:18,713 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:13:18,714 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:18,714 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:13:18,714 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash 874831, now seen corresponding path program 1 times [2020-10-16 05:13:18,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:18,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923726369] [2020-10-16 05:13:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:18,725 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 05:13:18,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923726369] [2020-10-16 05:13:18,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:18,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:13:18,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077795989] [2020-10-16 05:13:18,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:13:18,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:18,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:13:18,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:13:18,727 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 184 [2020-10-16 05:13:18,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states. [2020-10-16 05:13:18,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:18,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 184 [2020-10-16 05:13:18,728 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:18,908 INFO L129 PetriNetUnfolder]: 2028/2755 cut-off events. [2020-10-16 05:13:18,908 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 05:13:18,916 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 2755 events. 2028/2755 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 12233 event pairs, 449 based on Foata normal form. 0/2376 useless extension candidates. Maximal degree in co-relation 5502. Up to 2533 conditions per place. [2020-10-16 05:13:18,925 INFO L132 encePairwiseOnDemand]: 177/184 looper letters, 18 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2020-10-16 05:13:18,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 168 flow [2020-10-16 05:13:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:13:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:13:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2020-10-16 05:13:18,927 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7518115942028986 [2020-10-16 05:13:18,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2020-10-16 05:13:18,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2020-10-16 05:13:18,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:18,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2020-10-16 05:13:18,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:13:18,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:13:18,929 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:13:18,929 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states and 415 transitions. [2020-10-16 05:13:18,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 168 flow [2020-10-16 05:13:18,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 147 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:18,931 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 117 flow [2020-10-16 05:13:18,932 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2020-10-16 05:13:18,932 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2020-10-16 05:13:18,932 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 117 flow [2020-10-16 05:13:18,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:13:18,932 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:18,932 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:18,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 05:13:18,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:18,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:18,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1633370748, now seen corresponding path program 1 times [2020-10-16 05:13:18,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:18,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738743980] [2020-10-16 05:13:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:18,957 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 05:13:18,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738743980] [2020-10-16 05:13:18,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:18,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:13:18,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777085869] [2020-10-16 05:13:18,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:13:18,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:18,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:13:18,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:13:18,960 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2020-10-16 05:13:18,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 117 flow. Second operand 5 states. [2020-10-16 05:13:18,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:18,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2020-10-16 05:13:18,961 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:19,349 INFO L129 PetriNetUnfolder]: 3268/4565 cut-off events. [2020-10-16 05:13:19,349 INFO L130 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2020-10-16 05:13:19,365 INFO L80 FinitePrefix]: Finished finitePrefix Result has 11597 conditions, 4565 events. 3268/4565 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 23786 event pairs, 1090 based on Foata normal form. 81/4436 useless extension candidates. Maximal degree in co-relation 11582. Up to 2308 conditions per place. [2020-10-16 05:13:19,383 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 38 selfloop transitions, 16 changer transitions 0/65 dead transitions. [2020-10-16 05:13:19,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 327 flow [2020-10-16 05:13:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:13:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:13:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 823 transitions. [2020-10-16 05:13:19,385 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7454710144927537 [2020-10-16 05:13:19,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 823 transitions. [2020-10-16 05:13:19,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 823 transitions. [2020-10-16 05:13:19,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:19,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 823 transitions. [2020-10-16 05:13:19,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:13:19,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:13:19,388 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:13:19,388 INFO L185 Difference]: Start difference. First operand has 41 places, 30 transitions, 117 flow. Second operand 6 states and 823 transitions. [2020-10-16 05:13:19,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 327 flow [2020-10-16 05:13:19,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:19,390 INFO L241 Difference]: Finished difference. Result has 48 places, 40 transitions, 216 flow [2020-10-16 05:13:19,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2020-10-16 05:13:19,390 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2020-10-16 05:13:19,391 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 216 flow [2020-10-16 05:13:19,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:13:19,391 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:19,391 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:19,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 05:13:19,391 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:19,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1187441432, now seen corresponding path program 1 times [2020-10-16 05:13:19,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:19,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879074179] [2020-10-16 05:13:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:19,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879074179] [2020-10-16 05:13:19,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:19,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:13:19,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880580369] [2020-10-16 05:13:19,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:13:19,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:13:19,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:13:19,421 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 184 [2020-10-16 05:13:19,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 216 flow. Second operand 5 states. [2020-10-16 05:13:19,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:19,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 184 [2020-10-16 05:13:19,422 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:19,992 INFO L129 PetriNetUnfolder]: 5187/7497 cut-off events. [2020-10-16 05:13:19,992 INFO L130 PetriNetUnfolder]: For 4892/4892 co-relation queries the response was YES. [2020-10-16 05:13:20,031 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24154 conditions, 7497 events. 5187/7497 cut-off events. For 4892/4892 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 45042 event pairs, 1734 based on Foata normal form. 127/7325 useless extension candidates. Maximal degree in co-relation 24135. Up to 3925 conditions per place. [2020-10-16 05:13:20,068 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 48 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2020-10-16 05:13:20,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 573 flow [2020-10-16 05:13:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:13:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:13:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 818 transitions. [2020-10-16 05:13:20,069 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7409420289855072 [2020-10-16 05:13:20,069 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 818 transitions. [2020-10-16 05:13:20,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 818 transitions. [2020-10-16 05:13:20,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:20,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 818 transitions. [2020-10-16 05:13:20,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:13:20,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:13:20,072 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:13:20,072 INFO L185 Difference]: Start difference. First operand has 48 places, 40 transitions, 216 flow. Second operand 6 states and 818 transitions. [2020-10-16 05:13:20,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 573 flow [2020-10-16 05:13:20,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 532 flow, removed 8 selfloop flow, removed 2 redundant places. [2020-10-16 05:13:20,083 INFO L241 Difference]: Finished difference. Result has 54 places, 55 transitions, 378 flow [2020-10-16 05:13:20,083 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2020-10-16 05:13:20,083 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2020-10-16 05:13:20,083 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 378 flow [2020-10-16 05:13:20,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:13:20,084 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:20,084 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:20,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 05:13:20,084 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:20,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:20,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1467459476, now seen corresponding path program 1 times [2020-10-16 05:13:20,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:20,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84883203] [2020-10-16 05:13:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:13:20,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84883203] [2020-10-16 05:13:20,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357285671] [2020-10-16 05:13:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:20,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:13:20,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:13:20,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:20,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:13:20,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241329113] [2020-10-16 05:13:20,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:20,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:20,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:20,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:20,224 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:13:20,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 378 flow. Second operand 9 states. [2020-10-16 05:13:20,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:20,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:13:20,225 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:20,966 INFO L129 PetriNetUnfolder]: 5524/8095 cut-off events. [2020-10-16 05:13:20,967 INFO L130 PetriNetUnfolder]: For 10687/10687 co-relation queries the response was YES. [2020-10-16 05:13:21,006 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30612 conditions, 8095 events. 5524/8095 cut-off events. For 10687/10687 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 49996 event pairs, 1393 based on Foata normal form. 27/7827 useless extension candidates. Maximal degree in co-relation 30590. Up to 3668 conditions per place. [2020-10-16 05:13:21,047 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 77 selfloop transitions, 47 changer transitions 0/134 dead transitions. [2020-10-16 05:13:21,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 134 transitions, 974 flow [2020-10-16 05:13:21,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1745 transitions. [2020-10-16 05:13:21,049 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7295150501672241 [2020-10-16 05:13:21,049 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1745 transitions. [2020-10-16 05:13:21,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1745 transitions. [2020-10-16 05:13:21,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:21,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1745 transitions. [2020-10-16 05:13:21,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:21,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:21,054 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:21,054 INFO L185 Difference]: Start difference. First operand has 54 places, 55 transitions, 378 flow. Second operand 13 states and 1745 transitions. [2020-10-16 05:13:21,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 134 transitions, 974 flow [2020-10-16 05:13:21,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 134 transitions, 938 flow, removed 14 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:21,098 INFO L241 Difference]: Finished difference. Result has 68 places, 71 transitions, 604 flow [2020-10-16 05:13:21,098 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2020-10-16 05:13:21,099 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2020-10-16 05:13:21,099 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 604 flow [2020-10-16 05:13:21,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:21,099 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:21,099 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:21,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 05:13:21,314 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:21,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:21,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1330099940, now seen corresponding path program 2 times [2020-10-16 05:13:21,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:21,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163949058] [2020-10-16 05:13:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:21,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163949058] [2020-10-16 05:13:21,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:21,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:13:21,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015422398] [2020-10-16 05:13:21,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:13:21,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:21,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:13:21,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:13:21,358 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:13:21,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 604 flow. Second operand 7 states. [2020-10-16 05:13:21,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:21,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:13:21,359 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:22,193 INFO L129 PetriNetUnfolder]: 5860/8571 cut-off events. [2020-10-16 05:13:22,194 INFO L130 PetriNetUnfolder]: For 20675/20675 co-relation queries the response was YES. [2020-10-16 05:13:22,238 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37129 conditions, 8571 events. 5860/8571 cut-off events. For 20675/20675 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 54145 event pairs, 1396 based on Foata normal form. 27/8330 useless extension candidates. Maximal degree in co-relation 37103. Up to 3411 conditions per place. [2020-10-16 05:13:22,282 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 81 selfloop transitions, 54 changer transitions 0/145 dead transitions. [2020-10-16 05:13:22,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 1227 flow [2020-10-16 05:13:22,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1745 transitions. [2020-10-16 05:13:22,285 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7295150501672241 [2020-10-16 05:13:22,285 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1745 transitions. [2020-10-16 05:13:22,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1745 transitions. [2020-10-16 05:13:22,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:22,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1745 transitions. [2020-10-16 05:13:22,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:22,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:22,289 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:22,289 INFO L185 Difference]: Start difference. First operand has 68 places, 71 transitions, 604 flow. Second operand 13 states and 1745 transitions. [2020-10-16 05:13:22,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 1227 flow [2020-10-16 05:13:22,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 145 transitions, 1122 flow, removed 10 selfloop flow, removed 7 redundant places. [2020-10-16 05:13:22,446 INFO L241 Difference]: Finished difference. Result has 76 places, 83 transitions, 759 flow [2020-10-16 05:13:22,446 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=759, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2020-10-16 05:13:22,446 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2020-10-16 05:13:22,446 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 759 flow [2020-10-16 05:13:22,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:13:22,446 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:22,446 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:22,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 05:13:22,446 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:22,447 INFO L82 PathProgramCache]: Analyzing trace with hash -301070015, now seen corresponding path program 1 times [2020-10-16 05:13:22,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:22,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070158045] [2020-10-16 05:13:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:22,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070158045] [2020-10-16 05:13:22,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:22,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:13:22,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064448208] [2020-10-16 05:13:22,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:13:22,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:22,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:13:22,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:13:22,477 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2020-10-16 05:13:22,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 759 flow. Second operand 5 states. [2020-10-16 05:13:22,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:22,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2020-10-16 05:13:22,478 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:23,875 INFO L129 PetriNetUnfolder]: 9063/13811 cut-off events. [2020-10-16 05:13:23,875 INFO L130 PetriNetUnfolder]: For 49101/49129 co-relation queries the response was YES. [2020-10-16 05:13:23,944 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67489 conditions, 13811 events. 9063/13811 cut-off events. For 49101/49129 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 99671 event pairs, 2889 based on Foata normal form. 230/13585 useless extension candidates. Maximal degree in co-relation 67461. Up to 7113 conditions per place. [2020-10-16 05:13:24,009 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 111 selfloop transitions, 49 changer transitions 0/171 dead transitions. [2020-10-16 05:13:24,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 171 transitions, 1905 flow [2020-10-16 05:13:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:13:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:13:24,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 824 transitions. [2020-10-16 05:13:24,010 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2020-10-16 05:13:24,010 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 824 transitions. [2020-10-16 05:13:24,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 824 transitions. [2020-10-16 05:13:24,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:24,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 824 transitions. [2020-10-16 05:13:24,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:13:24,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:13:24,012 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:13:24,012 INFO L185 Difference]: Start difference. First operand has 76 places, 83 transitions, 759 flow. Second operand 6 states and 824 transitions. [2020-10-16 05:13:24,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 171 transitions, 1905 flow [2020-10-16 05:13:24,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 171 transitions, 1682 flow, removed 22 selfloop flow, removed 9 redundant places. [2020-10-16 05:13:24,302 INFO L241 Difference]: Finished difference. Result has 75 places, 115 transitions, 1155 flow [2020-10-16 05:13:24,302 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1155, PETRI_PLACES=75, PETRI_TRANSITIONS=115} [2020-10-16 05:13:24,302 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2020-10-16 05:13:24,302 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 115 transitions, 1155 flow [2020-10-16 05:13:24,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:13:24,303 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:24,303 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:24,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 05:13:24,303 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:24,303 INFO L82 PathProgramCache]: Analyzing trace with hash 458807869, now seen corresponding path program 1 times [2020-10-16 05:13:24,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:24,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546602233] [2020-10-16 05:13:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:13:24,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546602233] [2020-10-16 05:13:24,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485803929] [2020-10-16 05:13:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:24,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:13:24,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:13:24,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:24,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:13:24,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99671866] [2020-10-16 05:13:24,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:24,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:24,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:24,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:24,431 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 184 [2020-10-16 05:13:24,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 115 transitions, 1155 flow. Second operand 9 states. [2020-10-16 05:13:24,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:24,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 184 [2020-10-16 05:13:24,432 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:26,115 INFO L129 PetriNetUnfolder]: 9689/14859 cut-off events. [2020-10-16 05:13:26,116 INFO L130 PetriNetUnfolder]: For 68531/68565 co-relation queries the response was YES. [2020-10-16 05:13:26,211 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78371 conditions, 14859 events. 9689/14859 cut-off events. For 68531/68565 co-relation queries the response was YES. Maximal size of possible extension queue 1491. Compared 110073 event pairs, 2334 based on Foata normal form. 68/14534 useless extension candidates. Maximal degree in co-relation 78340. Up to 5972 conditions per place. [2020-10-16 05:13:26,290 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 118 selfloop transitions, 97 changer transitions 0/225 dead transitions. [2020-10-16 05:13:26,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 225 transitions, 2441 flow [2020-10-16 05:13:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1760 transitions. [2020-10-16 05:13:26,292 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7357859531772575 [2020-10-16 05:13:26,292 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1760 transitions. [2020-10-16 05:13:26,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1760 transitions. [2020-10-16 05:13:26,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:26,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1760 transitions. [2020-10-16 05:13:26,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:26,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:26,296 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:26,296 INFO L185 Difference]: Start difference. First operand has 75 places, 115 transitions, 1155 flow. Second operand 13 states and 1760 transitions. [2020-10-16 05:13:26,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 225 transitions, 2441 flow [2020-10-16 05:13:26,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 225 transitions, 2352 flow, removed 38 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:26,824 INFO L241 Difference]: Finished difference. Result has 89 places, 146 transitions, 1704 flow [2020-10-16 05:13:26,824 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1704, PETRI_PLACES=89, PETRI_TRANSITIONS=146} [2020-10-16 05:13:26,824 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2020-10-16 05:13:26,824 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 146 transitions, 1704 flow [2020-10-16 05:13:26,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:26,825 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:26,825 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:27,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 05:13:27,026 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:27,026 INFO L82 PathProgramCache]: Analyzing trace with hash 965067293, now seen corresponding path program 1 times [2020-10-16 05:13:27,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:27,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450081382] [2020-10-16 05:13:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:27,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450081382] [2020-10-16 05:13:27,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559122740] [2020-10-16 05:13:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:27,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:13:27,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:27,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:27,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:13:27,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128557409] [2020-10-16 05:13:27,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:27,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:27,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:27,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:27,176 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:13:27,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 146 transitions, 1704 flow. Second operand 9 states. [2020-10-16 05:13:27,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:27,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:13:27,177 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:29,146 INFO L129 PetriNetUnfolder]: 10260/15910 cut-off events. [2020-10-16 05:13:29,146 INFO L130 PetriNetUnfolder]: For 95501/95501 co-relation queries the response was YES. [2020-10-16 05:13:29,247 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90775 conditions, 15910 events. 10260/15910 cut-off events. For 95501/95501 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 120417 event pairs, 2369 based on Foata normal form. 59/15547 useless extension candidates. Maximal degree in co-relation 90740. Up to 5634 conditions per place. [2020-10-16 05:13:29,332 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 144 selfloop transitions, 110 changer transitions 0/264 dead transitions. [2020-10-16 05:13:29,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 264 transitions, 3250 flow [2020-10-16 05:13:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 05:13:29,335 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 05:13:29,335 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 05:13:29,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 05:13:29,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:29,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 05:13:29,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:29,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:29,338 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:29,338 INFO L185 Difference]: Start difference. First operand has 89 places, 146 transitions, 1704 flow. Second operand 13 states and 1748 transitions. [2020-10-16 05:13:29,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 264 transitions, 3250 flow [2020-10-16 05:13:30,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 264 transitions, 3135 flow, removed 36 selfloop flow, removed 3 redundant places. [2020-10-16 05:13:30,310 INFO L241 Difference]: Finished difference. Result has 101 places, 181 transitions, 2342 flow [2020-10-16 05:13:30,311 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2342, PETRI_PLACES=101, PETRI_TRANSITIONS=181} [2020-10-16 05:13:30,311 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2020-10-16 05:13:30,311 INFO L481 AbstractCegarLoop]: Abstraction has has 101 places, 181 transitions, 2342 flow [2020-10-16 05:13:30,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:30,311 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:30,311 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:30,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 05:13:30,512 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:30,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:30,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1565460227, now seen corresponding path program 2 times [2020-10-16 05:13:30,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:30,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120392224] [2020-10-16 05:13:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:30,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120392224] [2020-10-16 05:13:30,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:30,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:13:30,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249656133] [2020-10-16 05:13:30,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:13:30,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:30,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:13:30,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:13:30,552 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 184 [2020-10-16 05:13:30,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 181 transitions, 2342 flow. Second operand 7 states. [2020-10-16 05:13:30,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:30,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 184 [2020-10-16 05:13:30,553 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:33,126 INFO L129 PetriNetUnfolder]: 10713/16682 cut-off events. [2020-10-16 05:13:33,127 INFO L130 PetriNetUnfolder]: For 129074/129108 co-relation queries the response was YES. [2020-10-16 05:13:33,240 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103642 conditions, 16682 events. 10713/16682 cut-off events. For 129074/129108 co-relation queries the response was YES. Maximal size of possible extension queue 1713. Compared 128786 event pairs, 2456 based on Foata normal form. 54/16340 useless extension candidates. Maximal degree in co-relation 103604. Up to 5806 conditions per place. [2020-10-16 05:13:33,328 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 152 selfloop transitions, 124 changer transitions 0/286 dead transitions. [2020-10-16 05:13:33,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 286 transitions, 3841 flow [2020-10-16 05:13:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1760 transitions. [2020-10-16 05:13:33,330 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7357859531772575 [2020-10-16 05:13:33,331 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1760 transitions. [2020-10-16 05:13:33,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1760 transitions. [2020-10-16 05:13:33,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:33,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1760 transitions. [2020-10-16 05:13:33,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:33,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:33,333 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:33,333 INFO L185 Difference]: Start difference. First operand has 101 places, 181 transitions, 2342 flow. Second operand 13 states and 1760 transitions. [2020-10-16 05:13:33,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 286 transitions, 3841 flow [2020-10-16 05:13:34,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 286 transitions, 3755 flow, removed 40 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:34,927 INFO L241 Difference]: Finished difference. Result has 115 places, 204 transitions, 2919 flow [2020-10-16 05:13:34,928 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2919, PETRI_PLACES=115, PETRI_TRANSITIONS=204} [2020-10-16 05:13:34,928 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2020-10-16 05:13:34,928 INFO L481 AbstractCegarLoop]: Abstraction has has 115 places, 204 transitions, 2919 flow [2020-10-16 05:13:34,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:13:34,928 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:34,928 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:34,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 05:13:34,929 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:34,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1565467171, now seen corresponding path program 2 times [2020-10-16 05:13:34,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:34,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760579135] [2020-10-16 05:13:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:34,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760579135] [2020-10-16 05:13:34,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:34,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:13:34,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113583220] [2020-10-16 05:13:34,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:13:34,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:34,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:13:34,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:13:34,970 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:13:34,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 204 transitions, 2919 flow. Second operand 7 states. [2020-10-16 05:13:34,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:34,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:13:34,971 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:37,256 INFO L129 PetriNetUnfolder]: 11284/17673 cut-off events. [2020-10-16 05:13:37,257 INFO L130 PetriNetUnfolder]: For 158825/158825 co-relation queries the response was YES. [2020-10-16 05:13:37,421 INFO L80 FinitePrefix]: Finished finitePrefix Result has 118403 conditions, 17673 events. 11284/17673 cut-off events. For 158825/158825 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 139543 event pairs, 2498 based on Foata normal form. 59/17386 useless extension candidates. Maximal degree in co-relation 118361. Up to 6174 conditions per place. [2020-10-16 05:13:37,527 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 160 selfloop transitions, 140 changer transitions 0/310 dead transitions. [2020-10-16 05:13:37,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 310 transitions, 4580 flow [2020-10-16 05:13:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 05:13:37,530 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 05:13:37,530 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 05:13:37,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 05:13:37,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:37,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 05:13:37,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:37,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:37,533 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:37,533 INFO L185 Difference]: Start difference. First operand has 115 places, 204 transitions, 2919 flow. Second operand 13 states and 1748 transitions. [2020-10-16 05:13:37,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 310 transitions, 4580 flow [2020-10-16 05:13:40,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 310 transitions, 4261 flow, removed 41 selfloop flow, removed 9 redundant places. [2020-10-16 05:13:40,482 INFO L241 Difference]: Finished difference. Result has 121 places, 233 transitions, 3449 flow [2020-10-16 05:13:40,482 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=2668, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3449, PETRI_PLACES=121, PETRI_TRANSITIONS=233} [2020-10-16 05:13:40,482 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 82 predicate places. [2020-10-16 05:13:40,482 INFO L481 AbstractCegarLoop]: Abstraction has has 121 places, 233 transitions, 3449 flow [2020-10-16 05:13:40,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:13:40,482 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:40,482 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:40,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 05:13:40,483 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:40,483 INFO L82 PathProgramCache]: Analyzing trace with hash -251848556, now seen corresponding path program 1 times [2020-10-16 05:13:40,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:40,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675486247] [2020-10-16 05:13:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:13:40,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675486247] [2020-10-16 05:13:40,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:40,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:13:40,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426105093] [2020-10-16 05:13:40,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:13:40,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:40,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:13:40,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:13:40,508 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 184 [2020-10-16 05:13:40,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 233 transitions, 3449 flow. Second operand 5 states. [2020-10-16 05:13:40,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:40,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 184 [2020-10-16 05:13:40,508 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:46,903 INFO L129 PetriNetUnfolder]: 17075/27646 cut-off events. [2020-10-16 05:13:46,903 INFO L130 PetriNetUnfolder]: For 330076/330452 co-relation queries the response was YES. [2020-10-16 05:13:47,161 INFO L80 FinitePrefix]: Finished finitePrefix Result has 199256 conditions, 27646 events. 17075/27646 cut-off events. For 330076/330452 co-relation queries the response was YES. Maximal size of possible extension queue 2852. Compared 243704 event pairs, 3741 based on Foata normal form. 478/27985 useless extension candidates. Maximal degree in co-relation 199211. Up to 14958 conditions per place. [2020-10-16 05:13:47,334 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 360 selfloop transitions, 106 changer transitions 0/477 dead transitions. [2020-10-16 05:13:47,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 477 transitions, 8157 flow [2020-10-16 05:13:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:13:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:13:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 818 transitions. [2020-10-16 05:13:47,336 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7409420289855072 [2020-10-16 05:13:47,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 818 transitions. [2020-10-16 05:13:47,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 818 transitions. [2020-10-16 05:13:47,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:47,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 818 transitions. [2020-10-16 05:13:47,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:13:47,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:13:47,337 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:13:47,337 INFO L185 Difference]: Start difference. First operand has 121 places, 233 transitions, 3449 flow. Second operand 6 states and 818 transitions. [2020-10-16 05:13:47,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 477 transitions, 8157 flow [2020-10-16 05:13:55,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 477 transitions, 7807 flow, removed 60 selfloop flow, removed 7 redundant places. [2020-10-16 05:13:55,646 INFO L241 Difference]: Finished difference. Result has 122 places, 310 transitions, 4984 flow [2020-10-16 05:13:55,647 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4984, PETRI_PLACES=122, PETRI_TRANSITIONS=310} [2020-10-16 05:13:55,647 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2020-10-16 05:13:55,647 INFO L481 AbstractCegarLoop]: Abstraction has has 122 places, 310 transitions, 4984 flow [2020-10-16 05:13:55,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:13:55,647 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:55,647 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:55,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 05:13:55,648 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1481129127, now seen corresponding path program 1 times [2020-10-16 05:13:55,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:55,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597940974] [2020-10-16 05:13:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:13:55,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597940974] [2020-10-16 05:13:55,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983261013] [2020-10-16 05:13:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:55,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:13:55,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:13:55,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:55,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 05:13:55,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077033315] [2020-10-16 05:13:55,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 05:13:55,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:55,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 05:13:55,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 05:13:55,808 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:13:55,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 310 transitions, 4984 flow. Second operand 11 states. [2020-10-16 05:13:55,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:55,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:13:55,809 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:14:00,706 INFO L129 PetriNetUnfolder]: 16818/27359 cut-off events. [2020-10-16 05:14:00,707 INFO L130 PetriNetUnfolder]: For 360098/360602 co-relation queries the response was YES. [2020-10-16 05:14:00,985 INFO L80 FinitePrefix]: Finished finitePrefix Result has 209081 conditions, 27359 events. 16818/27359 cut-off events. For 360098/360602 co-relation queries the response was YES. Maximal size of possible extension queue 2879. Compared 243565 event pairs, 3530 based on Foata normal form. 54/27051 useless extension candidates. Maximal degree in co-relation 209033. Up to 9653 conditions per place. [2020-10-16 05:14:01,158 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 216 selfloop transitions, 297 changer transitions 0/522 dead transitions. [2020-10-16 05:14:01,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 522 transitions, 8566 flow [2020-10-16 05:14:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:14:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:14:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:14:01,162 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:14:01,162 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:14:01,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:14:01,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:14:01,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:14:01,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:14:01,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:14:01,170 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:14:01,170 INFO L185 Difference]: Start difference. First operand has 122 places, 310 transitions, 4984 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:14:01,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 522 transitions, 8566 flow [2020-10-16 05:14:12,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 522 transitions, 8019 flow, removed 263 selfloop flow, removed 1 redundant places. [2020-10-16 05:14:12,901 INFO L241 Difference]: Finished difference. Result has 152 places, 350 transitions, 6117 flow [2020-10-16 05:14:12,902 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6117, PETRI_PLACES=152, PETRI_TRANSITIONS=350} [2020-10-16 05:14:12,902 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 113 predicate places. [2020-10-16 05:14:12,902 INFO L481 AbstractCegarLoop]: Abstraction has has 152 places, 350 transitions, 6117 flow [2020-10-16 05:14:12,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 05:14:12,902 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:14:12,903 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:14:13,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:14:13,117 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:14:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:14:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1603723083, now seen corresponding path program 2 times [2020-10-16 05:14:13,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:14:13,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872371871] [2020-10-16 05:14:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:14:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:14:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:14:13,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872371871] [2020-10-16 05:14:13,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179018434] [2020-10-16 05:14:13,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:14:13,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 05:14:13,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:14:13,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:14:13,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:14:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:14:13,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:14:13,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 05:14:13,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394423862] [2020-10-16 05:14:13,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 05:14:13,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:14:13,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 05:14:13,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 05:14:13,268 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:14:13,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 350 transitions, 6117 flow. Second operand 11 states. [2020-10-16 05:14:13,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:14:13,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:14:13,269 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:14:18,483 INFO L129 PetriNetUnfolder]: 16879/27446 cut-off events. [2020-10-16 05:14:18,483 INFO L130 PetriNetUnfolder]: For 430340/431168 co-relation queries the response was YES. [2020-10-16 05:14:18,807 INFO L80 FinitePrefix]: Finished finitePrefix Result has 217802 conditions, 27446 events. 16879/27446 cut-off events. For 430340/431168 co-relation queries the response was YES. Maximal size of possible extension queue 2901. Compared 245601 event pairs, 3131 based on Foata normal form. 32/27195 useless extension candidates. Maximal degree in co-relation 217750. Up to 8561 conditions per place. [2020-10-16 05:14:18,987 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 221 selfloop transitions, 309 changer transitions 0/539 dead transitions. [2020-10-16 05:14:18,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 539 transitions, 9169 flow [2020-10-16 05:14:18,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:14:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:14:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:14:18,990 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:14:18,990 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:14:18,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:14:18,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:14:18,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:14:18,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:14:18,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:14:18,995 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:14:18,996 INFO L185 Difference]: Start difference. First operand has 152 places, 350 transitions, 6117 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:14:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 539 transitions, 9169 flow [2020-10-16 05:14:36,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 539 transitions, 8582 flow, removed 41 selfloop flow, removed 19 redundant places. [2020-10-16 05:14:36,683 INFO L241 Difference]: Finished difference. Result has 164 places, 374 transitions, 6684 flow [2020-10-16 05:14:36,683 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=5550, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6684, PETRI_PLACES=164, PETRI_TRANSITIONS=374} [2020-10-16 05:14:36,684 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2020-10-16 05:14:36,684 INFO L481 AbstractCegarLoop]: Abstraction has has 164 places, 374 transitions, 6684 flow [2020-10-16 05:14:36,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 05:14:36,684 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:14:36,684 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:14:36,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-16 05:14:36,885 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:14:36,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:14:36,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1624984167, now seen corresponding path program 3 times [2020-10-16 05:14:36,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:14:36,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28320452] [2020-10-16 05:14:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:14:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:14:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:14:36,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28320452] [2020-10-16 05:14:36,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:14:36,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:14:36,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558517078] [2020-10-16 05:14:36,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:14:36,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:14:36,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:14:36,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:14:36,952 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:14:36,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 374 transitions, 6684 flow. Second operand 9 states. [2020-10-16 05:14:36,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:14:36,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:14:36,954 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:14:42,310 INFO L129 PetriNetUnfolder]: 16940/27729 cut-off events. [2020-10-16 05:14:42,310 INFO L130 PetriNetUnfolder]: For 485973/486371 co-relation queries the response was YES. [2020-10-16 05:14:42,651 INFO L80 FinitePrefix]: Finished finitePrefix Result has 229121 conditions, 27729 events. 16940/27729 cut-off events. For 485973/486371 co-relation queries the response was YES. Maximal size of possible extension queue 2928. Compared 248460 event pairs, 3319 based on Foata normal form. 58/27422 useless extension candidates. Maximal degree in co-relation 229068. Up to 8608 conditions per place. [2020-10-16 05:14:42,837 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 231 selfloop transitions, 323 changer transitions 0/563 dead transitions. [2020-10-16 05:14:42,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 563 transitions, 9913 flow [2020-10-16 05:14:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:14:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:14:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:14:42,842 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:14:42,842 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:14:42,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:14:42,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:14:42,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:14:42,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:14:42,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:14:42,850 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:14:42,850 INFO L185 Difference]: Start difference. First operand has 164 places, 374 transitions, 6684 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:14:42,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 563 transitions, 9913 flow [2020-10-16 05:15:01,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 563 transitions, 9378 flow, removed 38 selfloop flow, removed 18 redundant places. [2020-10-16 05:15:01,917 INFO L241 Difference]: Finished difference. Result has 177 places, 404 transitions, 7458 flow [2020-10-16 05:15:01,917 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7458, PETRI_PLACES=177, PETRI_TRANSITIONS=404} [2020-10-16 05:15:01,917 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2020-10-16 05:15:01,917 INFO L481 AbstractCegarLoop]: Abstraction has has 177 places, 404 transitions, 7458 flow [2020-10-16 05:15:01,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:15:01,918 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:15:01,918 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:15:01,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-16 05:15:01,918 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:15:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:15:01,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1655972161, now seen corresponding path program 4 times [2020-10-16 05:15:01,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:15:01,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785330080] [2020-10-16 05:15:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:15:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:15:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:15:01,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785330080] [2020-10-16 05:15:01,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818161855] [2020-10-16 05:15:01,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:15:02,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 05:15:02,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:15:02,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:15:02,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:15:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:15:02,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:15:02,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 05:15:02,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583277520] [2020-10-16 05:15:02,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 05:15:02,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:15:02,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 05:15:02,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 05:15:02,074 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:15:02,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 404 transitions, 7458 flow. Second operand 11 states. [2020-10-16 05:15:02,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:15:02,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:15:02,076 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:15:07,682 INFO L129 PetriNetUnfolder]: 17001/27786 cut-off events. [2020-10-16 05:15:07,682 INFO L130 PetriNetUnfolder]: For 561259/561899 co-relation queries the response was YES. [2020-10-16 05:15:08,054 INFO L80 FinitePrefix]: Finished finitePrefix Result has 238877 conditions, 27786 events. 17001/27786 cut-off events. For 561259/561899 co-relation queries the response was YES. Maximal size of possible extension queue 2948. Compared 249798 event pairs, 3206 based on Foata normal form. 31/27532 useless extension candidates. Maximal degree in co-relation 238821. Up to 8649 conditions per place. [2020-10-16 05:15:08,249 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 259 selfloop transitions, 325 changer transitions 0/593 dead transitions. [2020-10-16 05:15:08,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 593 transitions, 10830 flow [2020-10-16 05:15:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:15:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:15:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:15:08,252 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:15:08,253 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:15:08,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:15:08,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:15:08,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:15:08,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:15:08,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:15:08,260 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:15:08,260 INFO L185 Difference]: Start difference. First operand has 177 places, 404 transitions, 7458 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:15:08,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 593 transitions, 10830 flow [2020-10-16 05:15:28,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 593 transitions, 10293 flow, removed 35 selfloop flow, removed 19 redundant places. [2020-10-16 05:15:28,294 INFO L241 Difference]: Finished difference. Result has 189 places, 428 transitions, 8145 flow [2020-10-16 05:15:28,294 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6939, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8145, PETRI_PLACES=189, PETRI_TRANSITIONS=428} [2020-10-16 05:15:28,294 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 150 predicate places. [2020-10-16 05:15:28,294 INFO L481 AbstractCegarLoop]: Abstraction has has 189 places, 428 transitions, 8145 flow [2020-10-16 05:15:28,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 05:15:28,295 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:15:28,295 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:15:28,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-16 05:15:28,502 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:15:28,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:15:28,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1168716135, now seen corresponding path program 5 times [2020-10-16 05:15:28,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:15:28,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079857450] [2020-10-16 05:15:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:15:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:15:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:15:28,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079857450] [2020-10-16 05:15:28,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:15:28,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:15:28,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483022888] [2020-10-16 05:15:28,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:15:28,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:15:28,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:15:28,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:15:28,558 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:15:28,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 428 transitions, 8145 flow. Second operand 9 states. [2020-10-16 05:15:28,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:15:28,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:15:28,559 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:15:34,139 INFO L129 PetriNetUnfolder]: 17062/27979 cut-off events. [2020-10-16 05:15:34,139 INFO L130 PetriNetUnfolder]: For 626891/627395 co-relation queries the response was YES. [2020-10-16 05:15:34,526 INFO L80 FinitePrefix]: Finished finitePrefix Result has 249197 conditions, 27979 events. 17062/27979 cut-off events. For 626891/627395 co-relation queries the response was YES. Maximal size of possible extension queue 2968. Compared 252399 event pairs, 3411 based on Foata normal form. 60/27701 useless extension candidates. Maximal degree in co-relation 249138. Up to 8700 conditions per place. [2020-10-16 05:15:34,722 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 269 selfloop transitions, 334 changer transitions 0/612 dead transitions. [2020-10-16 05:15:34,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 612 transitions, 11544 flow [2020-10-16 05:15:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:15:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:15:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:15:34,725 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:15:34,725 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:15:34,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:15:34,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:15:34,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:15:34,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:15:34,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:15:34,732 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:15:34,733 INFO L185 Difference]: Start difference. First operand has 189 places, 428 transitions, 8145 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:15:34,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 612 transitions, 11544 flow [2020-10-16 05:15:57,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 612 transitions, 10988 flow, removed 49 selfloop flow, removed 19 redundant places. [2020-10-16 05:15:57,242 INFO L241 Difference]: Finished difference. Result has 201 places, 453 transitions, 8832 flow [2020-10-16 05:15:57,242 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=7601, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8832, PETRI_PLACES=201, PETRI_TRANSITIONS=453} [2020-10-16 05:15:57,243 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 162 predicate places. [2020-10-16 05:15:57,243 INFO L481 AbstractCegarLoop]: Abstraction has has 201 places, 453 transitions, 8832 flow [2020-10-16 05:15:57,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:15:57,243 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:15:57,243 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:15:57,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 05:15:57,243 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:15:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:15:57,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1175382375, now seen corresponding path program 6 times [2020-10-16 05:15:57,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:15:57,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322585039] [2020-10-16 05:15:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:15:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:15:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:15:57,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322585039] [2020-10-16 05:15:57,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:15:57,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:15:57,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705910790] [2020-10-16 05:15:57,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:15:57,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:15:57,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:15:57,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:15:57,301 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:15:57,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 453 transitions, 8832 flow. Second operand 9 states. [2020-10-16 05:15:57,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:15:57,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:15:57,302 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:16:03,253 INFO L129 PetriNetUnfolder]: 17123/28164 cut-off events. [2020-10-16 05:16:03,254 INFO L130 PetriNetUnfolder]: For 691214/691636 co-relation queries the response was YES. [2020-10-16 05:16:03,646 INFO L80 FinitePrefix]: Finished finitePrefix Result has 259730 conditions, 28164 events. 17123/28164 cut-off events. For 691214/691636 co-relation queries the response was YES. Maximal size of possible extension queue 2987. Compared 254309 event pairs, 3225 based on Foata normal form. 59/27822 useless extension candidates. Maximal degree in co-relation 259668. Up to 8726 conditions per place. [2020-10-16 05:16:03,835 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 274 selfloop transitions, 341 changer transitions 0/624 dead transitions. [2020-10-16 05:16:03,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 624 transitions, 12152 flow [2020-10-16 05:16:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:16:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:16:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:16:03,839 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:16:03,839 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:16:03,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:16:03,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:16:03,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:16:03,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:16:03,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:16:03,845 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:16:03,846 INFO L185 Difference]: Start difference. First operand has 201 places, 453 transitions, 8832 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:16:03,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 624 transitions, 12152 flow [2020-10-16 05:16:25,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 624 transitions, 11582 flow, removed 38 selfloop flow, removed 20 redundant places. [2020-10-16 05:16:25,314 INFO L241 Difference]: Finished difference. Result has 212 places, 472 transitions, 9447 flow [2020-10-16 05:16:25,315 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=8270, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9447, PETRI_PLACES=212, PETRI_TRANSITIONS=472} [2020-10-16 05:16:25,315 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 173 predicate places. [2020-10-16 05:16:25,315 INFO L481 AbstractCegarLoop]: Abstraction has has 212 places, 472 transitions, 9447 flow [2020-10-16 05:16:25,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:16:25,315 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:16:25,315 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:16:25,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 05:16:25,315 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:16:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:16:25,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2107807768, now seen corresponding path program 1 times [2020-10-16 05:16:25,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:16:25,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736572513] [2020-10-16 05:16:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:16:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:16:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 05:16:25,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736572513] [2020-10-16 05:16:25,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976557457] [2020-10-16 05:16:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:16:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:16:25,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:16:25,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:16:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 05:16:25,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:16:25,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:16:25,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086692766] [2020-10-16 05:16:25,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:16:25,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:16:25,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:16:25,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:16:25,449 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:16:25,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 472 transitions, 9447 flow. Second operand 9 states. [2020-10-16 05:16:25,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:16:25,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:16:25,451 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:16:31,938 INFO L129 PetriNetUnfolder]: 18563/30810 cut-off events. [2020-10-16 05:16:31,939 INFO L130 PetriNetUnfolder]: For 810437/811111 co-relation queries the response was YES. [2020-10-16 05:16:32,384 INFO L80 FinitePrefix]: Finished finitePrefix Result has 295198 conditions, 30810 events. 18563/30810 cut-off events. For 810437/811111 co-relation queries the response was YES. Maximal size of possible extension queue 3270. Compared 284457 event pairs, 3336 based on Foata normal form. 217/30901 useless extension candidates. Maximal degree in co-relation 295133. Up to 9791 conditions per place. [2020-10-16 05:16:32,599 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 471 selfloop transitions, 326 changer transitions 0/807 dead transitions. [2020-10-16 05:16:32,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 807 transitions, 17539 flow [2020-10-16 05:16:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:16:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:16:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1747 transitions. [2020-10-16 05:16:32,601 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7303511705685619 [2020-10-16 05:16:32,601 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1747 transitions. [2020-10-16 05:16:32,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1747 transitions. [2020-10-16 05:16:32,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:16:32,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1747 transitions. [2020-10-16 05:16:32,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:16:32,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:16:32,604 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:16:32,605 INFO L185 Difference]: Start difference. First operand has 212 places, 472 transitions, 9447 flow. Second operand 13 states and 1747 transitions. [2020-10-16 05:16:32,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 807 transitions, 17539 flow [2020-10-16 05:17:02,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 807 transitions, 16666 flow, removed 56 selfloop flow, removed 20 redundant places. [2020-10-16 05:17:02,415 INFO L241 Difference]: Finished difference. Result has 207 places, 578 transitions, 12310 flow [2020-10-16 05:17:02,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=8884, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12310, PETRI_PLACES=207, PETRI_TRANSITIONS=578} [2020-10-16 05:17:02,416 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2020-10-16 05:17:02,416 INFO L481 AbstractCegarLoop]: Abstraction has has 207 places, 578 transitions, 12310 flow [2020-10-16 05:17:02,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:17:02,416 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:17:02,416 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:17:02,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 05:17:02,630 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:17:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:17:02,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1509505488, now seen corresponding path program 1 times [2020-10-16 05:17:02,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:17:02,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612872609] [2020-10-16 05:17:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:17:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:17:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:17:02,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612872609] [2020-10-16 05:17:02,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:17:02,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:17:02,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414542330] [2020-10-16 05:17:02,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:17:02,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:17:02,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:17:02,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:17:02,670 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 184 [2020-10-16 05:17:02,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 578 transitions, 12310 flow. Second operand 7 states. [2020-10-16 05:17:02,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:17:02,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 184 [2020-10-16 05:17:02,671 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:17:09,949 INFO L129 PetriNetUnfolder]: 19556/32996 cut-off events. [2020-10-16 05:17:09,950 INFO L130 PetriNetUnfolder]: For 967862/968290 co-relation queries the response was YES. [2020-10-16 05:17:10,485 INFO L80 FinitePrefix]: Finished finitePrefix Result has 326396 conditions, 32996 events. 19556/32996 cut-off events. For 967862/968290 co-relation queries the response was YES. Maximal size of possible extension queue 3522. Compared 311102 event pairs, 4471 based on Foata normal form. 189/32740 useless extension candidates. Maximal degree in co-relation 326328. Up to 10425 conditions per place. [2020-10-16 05:17:10,720 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 562 selfloop transitions, 348 changer transitions 0/920 dead transitions. [2020-10-16 05:17:10,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 920 transitions, 20795 flow [2020-10-16 05:17:10,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:17:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:17:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1735 transitions. [2020-10-16 05:17:10,722 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7253344481605352 [2020-10-16 05:17:10,722 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1735 transitions. [2020-10-16 05:17:10,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1735 transitions. [2020-10-16 05:17:10,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:17:10,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1735 transitions. [2020-10-16 05:17:10,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:17:10,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:17:10,724 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:17:10,724 INFO L185 Difference]: Start difference. First operand has 207 places, 578 transitions, 12310 flow. Second operand 13 states and 1735 transitions. [2020-10-16 05:17:10,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 920 transitions, 20795 flow [2020-10-16 05:17:52,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 920 transitions, 20413 flow, removed 158 selfloop flow, removed 3 redundant places. [2020-10-16 05:17:52,308 INFO L241 Difference]: Finished difference. Result has 219 places, 688 transitions, 15627 flow [2020-10-16 05:17:52,309 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=11990, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15627, PETRI_PLACES=219, PETRI_TRANSITIONS=688} [2020-10-16 05:17:52,309 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 180 predicate places. [2020-10-16 05:17:52,309 INFO L481 AbstractCegarLoop]: Abstraction has has 219 places, 688 transitions, 15627 flow [2020-10-16 05:17:52,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:17:52,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:17:52,309 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:17:52,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-16 05:17:52,309 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:17:52,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:17:52,310 INFO L82 PathProgramCache]: Analyzing trace with hash 154202698, now seen corresponding path program 1 times [2020-10-16 05:17:52,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:17:52,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140569961] [2020-10-16 05:17:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:17:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:17:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 05:17:52,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140569961] [2020-10-16 05:17:52,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677577435] [2020-10-16 05:17:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:17:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:17:52,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:17:52,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:17:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 05:17:52,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:17:52,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:17:52,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502023786] [2020-10-16 05:17:52,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:17:52,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:17:52,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:17:52,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:17:52,460 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:17:52,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 688 transitions, 15627 flow. Second operand 9 states. [2020-10-16 05:17:52,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:17:52,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:17:52,461 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:18:01,993 INFO L129 PetriNetUnfolder]: 20416/35053 cut-off events. [2020-10-16 05:18:01,994 INFO L130 PetriNetUnfolder]: For 1105509/1105539 co-relation queries the response was YES. [2020-10-16 05:18:02,559 INFO L80 FinitePrefix]: Finished finitePrefix Result has 359767 conditions, 35053 events. 20416/35053 cut-off events. For 1105509/1105539 co-relation queries the response was YES. Maximal size of possible extension queue 3757. Compared 340295 event pairs, 4102 based on Foata normal form. 150/34638 useless extension candidates. Maximal degree in co-relation 359696. Up to 10783 conditions per place. [2020-10-16 05:18:02,815 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 650 selfloop transitions, 377 changer transitions 0/1037 dead transitions. [2020-10-16 05:18:02,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1037 transitions, 24751 flow [2020-10-16 05:18:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:18:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:18:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 05:18:02,816 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 05:18:02,817 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 05:18:02,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 05:18:02,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:18:02,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 05:18:02,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:18:02,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:18:02,819 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:18:02,819 INFO L185 Difference]: Start difference. First operand has 219 places, 688 transitions, 15627 flow. Second operand 13 states and 1748 transitions. [2020-10-16 05:18:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1037 transitions, 24751 flow [2020-10-16 05:18:55,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1037 transitions, 24410 flow, removed 166 selfloop flow, removed 1 redundant places. [2020-10-16 05:18:55,537 INFO L241 Difference]: Finished difference. Result has 233 places, 805 transitions, 19305 flow [2020-10-16 05:18:55,538 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=15348, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=19305, PETRI_PLACES=233, PETRI_TRANSITIONS=805} [2020-10-16 05:18:55,538 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 194 predicate places. [2020-10-16 05:18:55,538 INFO L481 AbstractCegarLoop]: Abstraction has has 233 places, 805 transitions, 19305 flow [2020-10-16 05:18:55,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:18:55,538 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:18:55,539 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:18:55,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:18:55,747 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:18:55,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:18:55,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1508285328, now seen corresponding path program 2 times [2020-10-16 05:18:55,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:18:55,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309713053] [2020-10-16 05:18:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:18:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:18:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:18:55,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309713053] [2020-10-16 05:18:55,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:18:55,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:18:55,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111155869] [2020-10-16 05:18:55,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:18:55,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:18:55,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:18:55,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:18:55,804 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 184 [2020-10-16 05:18:55,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 805 transitions, 19305 flow. Second operand 7 states. [2020-10-16 05:18:55,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:18:55,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 184 [2020-10-16 05:18:55,805 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:19:05,764 INFO L129 PetriNetUnfolder]: 20963/35844 cut-off events. [2020-10-16 05:19:05,764 INFO L130 PetriNetUnfolder]: For 1247511/1247939 co-relation queries the response was YES. [2020-10-16 05:19:06,433 INFO L80 FinitePrefix]: Finished finitePrefix Result has 384149 conditions, 35844 events. 20963/35844 cut-off events. For 1247511/1247939 co-relation queries the response was YES. Maximal size of possible extension queue 3877. Compared 348807 event pairs, 4043 based on Foata normal form. 131/35646 useless extension candidates. Maximal degree in co-relation 384074. Up to 10947 conditions per place. [2020-10-16 05:19:06,707 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 690 selfloop transitions, 398 changer transitions 0/1098 dead transitions. [2020-10-16 05:19:06,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 1098 transitions, 26903 flow [2020-10-16 05:19:06,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:19:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:19:06,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1735 transitions. [2020-10-16 05:19:06,708 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7253344481605352 [2020-10-16 05:19:06,708 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1735 transitions. [2020-10-16 05:19:06,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1735 transitions. [2020-10-16 05:19:06,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:19:06,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1735 transitions. [2020-10-16 05:19:06,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:19:06,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:19:06,711 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:19:06,711 INFO L185 Difference]: Start difference. First operand has 233 places, 805 transitions, 19305 flow. Second operand 13 states and 1735 transitions. [2020-10-16 05:19:06,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 1098 transitions, 26903 flow [2020-10-16 05:20:14,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1098 transitions, 26546 flow, removed 174 selfloop flow, removed 1 redundant places. [2020-10-16 05:20:14,513 INFO L241 Difference]: Finished difference. Result has 247 places, 867 transitions, 21483 flow [2020-10-16 05:20:14,514 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=19014, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=21483, PETRI_PLACES=247, PETRI_TRANSITIONS=867} [2020-10-16 05:20:14,514 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 208 predicate places. [2020-10-16 05:20:14,515 INFO L481 AbstractCegarLoop]: Abstraction has has 247 places, 867 transitions, 21483 flow [2020-10-16 05:20:14,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:20:14,515 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:20:14,515 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:20:14,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 05:20:14,515 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:20:14,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:20:14,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1508278384, now seen corresponding path program 2 times [2020-10-16 05:20:14,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:20:14,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835985358] [2020-10-16 05:20:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:20:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:20:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:20:14,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835985358] [2020-10-16 05:20:14,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:20:14,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:20:14,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790667913] [2020-10-16 05:20:14,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:20:14,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:20:14,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:20:14,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:20:14,554 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:20:14,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 867 transitions, 21483 flow. Second operand 7 states. [2020-10-16 05:20:14,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:20:14,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:20:14,555 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:20:26,892 INFO L129 PetriNetUnfolder]: 21640/37526 cut-off events. [2020-10-16 05:20:26,892 INFO L130 PetriNetUnfolder]: For 1438392/1439060 co-relation queries the response was YES. [2020-10-16 05:20:27,543 INFO L80 FinitePrefix]: Finished finitePrefix Result has 411573 conditions, 37526 events. 21640/37526 cut-off events. For 1438392/1439060 co-relation queries the response was YES. Maximal size of possible extension queue 4092. Compared 371276 event pairs, 5107 based on Foata normal form. 181/36980 useless extension candidates. Maximal degree in co-relation 411494. Up to 11169 conditions per place. [2020-10-16 05:20:27,828 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 707 selfloop transitions, 431 changer transitions 0/1148 dead transitions. [2020-10-16 05:20:27,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1148 transitions, 29104 flow [2020-10-16 05:20:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:20:27,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:20:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1747 transitions. [2020-10-16 05:20:27,830 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7303511705685619 [2020-10-16 05:20:27,830 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1747 transitions. [2020-10-16 05:20:27,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1747 transitions. [2020-10-16 05:20:27,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:20:27,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1747 transitions. [2020-10-16 05:20:27,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:20:27,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:20:27,834 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:20:27,834 INFO L185 Difference]: Start difference. First operand has 247 places, 867 transitions, 21483 flow. Second operand 13 states and 1747 transitions. [2020-10-16 05:20:27,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1148 transitions, 29104 flow [2020-10-16 05:21:47,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 1148 transitions, 28203 flow, removed 116 selfloop flow, removed 7 redundant places. [2020-10-16 05:21:47,292 INFO L241 Difference]: Finished difference. Result has 255 places, 939 transitions, 23525 flow [2020-10-16 05:21:47,293 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=20735, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=23525, PETRI_PLACES=255, PETRI_TRANSITIONS=939} [2020-10-16 05:21:47,293 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 216 predicate places. [2020-10-16 05:21:47,293 INFO L481 AbstractCegarLoop]: Abstraction has has 255 places, 939 transitions, 23525 flow [2020-10-16 05:21:47,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:21:47,293 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:21:47,294 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:21:47,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 05:21:47,294 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:21:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:21:47,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1508270882, now seen corresponding path program 2 times [2020-10-16 05:21:47,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:21:47,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756619950] [2020-10-16 05:21:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:21:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:21:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:21:47,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756619950] [2020-10-16 05:21:47,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:21:47,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:21:47,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253780953] [2020-10-16 05:21:47,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:21:47,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:21:47,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:21:47,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:21:47,329 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:21:47,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 939 transitions, 23525 flow. Second operand 7 states. [2020-10-16 05:21:47,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:21:47,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:21:47,330 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:22:01,177 INFO L129 PetriNetUnfolder]: 22448/38961 cut-off events. [2020-10-16 05:22:01,177 INFO L130 PetriNetUnfolder]: For 1540535/1540565 co-relation queries the response was YES. [2020-10-16 05:22:01,823 INFO L80 FinitePrefix]: Finished finitePrefix Result has 436981 conditions, 38961 events. 22448/38961 cut-off events. For 1540535/1540565 co-relation queries the response was YES. Maximal size of possible extension queue 4229. Compared 387592 event pairs, 4464 based on Foata normal form. 142/38543 useless extension candidates. Maximal degree in co-relation 436899. Up to 11783 conditions per place. [2020-10-16 05:22:02,115 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 730 selfloop transitions, 476 changer transitions 0/1216 dead transitions. [2020-10-16 05:22:02,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 1216 transitions, 31250 flow [2020-10-16 05:22:02,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:22:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:22:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 05:22:02,117 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 05:22:02,117 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 05:22:02,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 05:22:02,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:22:02,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 05:22:02,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:22:02,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:22:02,119 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:22:02,119 INFO L185 Difference]: Start difference. First operand has 255 places, 939 transitions, 23525 flow. Second operand 13 states and 1748 transitions. [2020-10-16 05:22:02,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 1216 transitions, 31250 flow [2020-10-16 05:23:46,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1216 transitions, 30616 flow, removed 141 selfloop flow, removed 7 redundant places. [2020-10-16 05:23:46,150 INFO L241 Difference]: Finished difference. Result has 263 places, 1025 transitions, 26293 flow [2020-10-16 05:23:46,151 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=23020, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=26293, PETRI_PLACES=263, PETRI_TRANSITIONS=1025} [2020-10-16 05:23:46,152 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 224 predicate places. [2020-10-16 05:23:46,152 INFO L481 AbstractCegarLoop]: Abstraction has has 263 places, 1025 transitions, 26293 flow [2020-10-16 05:23:46,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:23:46,152 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:23:46,152 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:23:46,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 05:23:46,152 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:23:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:23:46,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1852153529, now seen corresponding path program 1 times [2020-10-16 05:23:46,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:23:46,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402023605] [2020-10-16 05:23:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:23:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:23:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-16 05:23:46,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402023605] [2020-10-16 05:23:46,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:23:46,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:23:46,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821149095] [2020-10-16 05:23:46,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:23:46,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:23:46,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:23:46,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:23:46,176 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2020-10-16 05:23:46,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 1025 transitions, 26293 flow. Second operand 5 states. [2020-10-16 05:23:46,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:23:46,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2020-10-16 05:23:46,177 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:24:11,514 INFO L129 PetriNetUnfolder]: 36333/64644 cut-off events. [2020-10-16 05:24:11,514 INFO L130 PetriNetUnfolder]: For 3035531/3039469 co-relation queries the response was YES. [2020-10-16 05:24:12,734 INFO L80 FinitePrefix]: Finished finitePrefix Result has 726416 conditions, 64644 events. 36333/64644 cut-off events. For 3035531/3039469 co-relation queries the response was YES. Maximal size of possible extension queue 6875. Compared 700411 event pairs, 8696 based on Foata normal form. 1309/65565 useless extension candidates. Maximal degree in co-relation 726331. Up to 38195 conditions per place. [2020-10-16 05:24:13,247 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 1711 selfloop transitions, 323 changer transitions 0/2045 dead transitions. [2020-10-16 05:24:13,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 2045 transitions, 57806 flow [2020-10-16 05:24:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:24:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:24:13,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 824 transitions. [2020-10-16 05:24:13,248 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2020-10-16 05:24:13,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 824 transitions. [2020-10-16 05:24:13,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 824 transitions. [2020-10-16 05:24:13,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:24:13,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 824 transitions. [2020-10-16 05:24:13,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:24:13,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:24:13,251 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:24:13,251 INFO L185 Difference]: Start difference. First operand has 263 places, 1025 transitions, 26293 flow. Second operand 6 states and 824 transitions. [2020-10-16 05:24:13,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 2045 transitions, 57806 flow Received shutdown request... [2020-10-16 05:26:28,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-16 05:26:28,308 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 05:26:28,311 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 05:26:28,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:26:28 BasicIcfg [2020-10-16 05:26:28,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:26:28,312 INFO L168 Benchmark]: Toolchain (without parser) took 825766.42 ms. Allocated memory was 249.6 MB in the beginning and 5.2 GB in the end (delta: 5.0 GB). Free memory was 204.7 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 5.2 GB. Max. memory is 14.2 GB. [2020-10-16 05:26:28,312 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:26:28,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.20 ms. Allocated memory was 249.6 MB in the beginning and 314.0 MB in the end (delta: 64.5 MB). Free memory was 204.7 MB in the beginning and 267.5 MB in the end (delta: -62.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:26:28,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.55 ms. Allocated memory is still 314.0 MB. Free memory was 267.5 MB in the beginning and 265.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:26:28,313 INFO L168 Benchmark]: Boogie Preprocessor took 28.00 ms. Allocated memory is still 314.0 MB. Free memory was 265.0 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:26:28,313 INFO L168 Benchmark]: RCFGBuilder took 467.61 ms. Allocated memory is still 314.0 MB. Free memory was 262.4 MB in the beginning and 243.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:26:28,314 INFO L168 Benchmark]: TraceAbstraction took 824407.42 ms. Allocated memory was 314.0 MB in the beginning and 5.2 GB in the end (delta: 4.9 GB). Free memory was 243.1 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 5.2 GB. Max. memory is 14.2 GB. [2020-10-16 05:26:28,316 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 807.20 ms. Allocated memory was 249.6 MB in the beginning and 314.0 MB in the end (delta: 64.5 MB). Free memory was 204.7 MB in the beginning and 267.5 MB in the end (delta: -62.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.55 ms. Allocated memory is still 314.0 MB. Free memory was 267.5 MB in the beginning and 265.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.00 ms. Allocated memory is still 314.0 MB. Free memory was 265.0 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 467.61 ms. Allocated memory is still 314.0 MB. Free memory was 262.4 MB in the beginning and 243.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 824407.42 ms. Allocated memory was 314.0 MB in the beginning and 5.2 GB in the end (delta: 4.9 GB). Free memory was 243.1 MB in the beginning and 3.7 GB in the end (delta: -3.5 GB). Peak memory consumption was 5.2 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 484 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 54 PlacesBefore, 17 PlacesAfterwards, 50 TransitionsBefore, 11 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 47 TotalNumberOfCompositions, 670 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 741 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 9 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 31 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 63 PlacesBefore, 24 PlacesAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 49 TotalNumberOfCompositions, 1246 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1057 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 72 PlacesBefore, 29 PlacesAfterwards, 64 TransitionsBefore, 19 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 52 TotalNumberOfCompositions, 2267 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1336 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 60 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 81 PlacesBefore, 34 PlacesAfterwards, 71 TransitionsBefore, 22 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 55 TotalNumberOfCompositions, 2992 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1867 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 90 PlacesBefore, 39 PlacesAfterwards, 78 TransitionsBefore, 25 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 3913 MoverChecksTotal - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 1 error locations. Started 5 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 824.0s, OverallIterations: 56, TraceHistogramMax: 5, AutomataDifference: 811.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 844 SDtfs, 4116 SDslu, 1191 SDs, 0 SdLazy, 7147 SolverSat, 659 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 941 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 715 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3446 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26293occurred in iteration=23, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1131 NumberOfCodeBlocks, 1123 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 1006 ConstructedInterpolants, 0 QuantifiedInterpolants, 51948 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1497 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 66 InterpolantComputations, 38 PerfectInterpolantSequences, 380/494 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 could not prove your program: Timeout Completed graceful shutdown