/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 02:31:57,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 02:31:57,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 02:31:57,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 02:31:57,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 02:31:57,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 02:31:57,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 02:31:57,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 02:31:57,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 02:31:57,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 02:31:57,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 02:31:57,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 02:31:57,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 02:31:57,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 02:31:57,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 02:31:57,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 02:31:57,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 02:31:57,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 02:31:57,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 02:31:57,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 02:31:57,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 02:31:57,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 02:31:57,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 02:31:57,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 02:31:57,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 02:31:57,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 02:31:57,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 02:31:57,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 02:31:57,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 02:31:57,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 02:31:57,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 02:31:57,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 02:31:57,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 02:31:57,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 02:31:57,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 02:31:57,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 02:31:57,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 02:31:58,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 02:31:58,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 02:31:58,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 02:31:58,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 02:31:58,013 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 02:31:58,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 02:31:58,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 02:31:58,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 02:31:58,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 02:31:58,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 02:31:58,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 02:31:58,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 02:31:58,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 02:31:58,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 02:31:58,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 02:31:58,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 02:31:58,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 02:31:58,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 02:31:58,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 02:31:58,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 02:31:58,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 02:31:58,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 02:31:58,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 02:31:58,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 02:31:58,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 02:31:58,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 02:31:58,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 02:31:58,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 02:31:58,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 02:31:58,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 02:31:58,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 02:31:58,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 02:31:58,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 02:31:58,315 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 02:31:58,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-16 02:31:58,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba474f7a9/27da0fa2438b4f799ec03f24d0ac872e/FLAGfa9f9528c [2020-10-16 02:31:58,969 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 02:31:58,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2020-10-16 02:31:58,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba474f7a9/27da0fa2438b4f799ec03f24d0ac872e/FLAGfa9f9528c [2020-10-16 02:31:59,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba474f7a9/27da0fa2438b4f799ec03f24d0ac872e [2020-10-16 02:31:59,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 02:31:59,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 02:31:59,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 02:31:59,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 02:31:59,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 02:31:59,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@715215b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59, skipping insertion in model container [2020-10-16 02:31:59,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 02:31:59,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 02:31:59,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:31:59,744 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 02:31:59,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 02:31:59,879 INFO L208 MainTranslator]: Completed translation [2020-10-16 02:31:59,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59 WrapperNode [2020-10-16 02:31:59,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 02:31:59,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 02:31:59,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 02:31:59,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 02:31:59,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 02:31:59,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 02:31:59,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 02:31:59,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 02:31:59,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (1/1) ... [2020-10-16 02:31:59,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 02:31:59,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 02:31:59,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 02:31:59,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 02:31:59,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (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 02:32:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 02:32:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 02:32:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 02:32:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 02:32:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 02:32:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 02:32:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 02:32:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 02:32:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 02:32:00,037 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 02:32:00,331 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 02:32:00,331 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-16 02:32:00,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:32:00 BoogieIcfgContainer [2020-10-16 02:32:00,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 02:32:00,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 02:32:00,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 02:32:00,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 02:32:00,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:31:59" (1/3) ... [2020-10-16 02:32:00,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7349f98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:32:00, skipping insertion in model container [2020-10-16 02:32:00,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:59" (2/3) ... [2020-10-16 02:32:00,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7349f98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:32:00, skipping insertion in model container [2020-10-16 02:32:00,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:32:00" (3/3) ... [2020-10-16 02:32:00,342 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2020-10-16 02:32:00,354 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 02:32:00,362 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 02:32:00,363 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 02:32:00,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,394 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,395 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,395 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,397 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,397 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,398 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,402 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,402 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,403 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,403 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,403 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:00,428 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 02:32:00,446 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:32:00,447 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:32:00,447 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:32:00,447 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:32:00,447 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:32:00,447 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:32:00,447 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:32:00,447 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:32:00,458 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 02:32:00,500 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 02:32:00,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:32:00,505 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-16 02:32:00,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 02:32:00,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 57 transitions, 122 flow [2020-10-16 02:32:00,515 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:32:00,518 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 57 transitions, 122 flow [2020-10-16 02:32:00,521 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 57 transitions, 122 flow [2020-10-16 02:32:00,521 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 122 flow [2020-10-16 02:32:00,543 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 02:32:00,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:32:00,545 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-16 02:32:00,547 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-16 02:32:01,887 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-16 02:32:02,099 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-16 02:32:02,174 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-16 02:32:02,175 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 02:32:02,177 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1664 [2020-10-16 02:32:02,183 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 02:32:02,184 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:32:02,184 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:02,185 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:32:02,185 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 02:32:02,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:02,191 INFO L82 PathProgramCache]: Analyzing trace with hash 229684, now seen corresponding path program 1 times [2020-10-16 02:32:02,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:02,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494694349] [2020-10-16 02:32:02,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:02,386 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 02:32:02,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494694349] [2020-10-16 02:32:02,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:02,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:32:02,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123202365] [2020-10-16 02:32:02,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:32:02,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:02,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:32:02,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:32:02,414 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2020-10-16 02:32:02,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states. [2020-10-16 02:32:02,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:02,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2020-10-16 02:32:02,418 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:02,459 INFO L129 PetriNetUnfolder]: 13/37 cut-off events. [2020-10-16 02:32:02,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:32:02,460 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 37 events. 13/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 103 event pairs, 4 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 69. Up to 19 conditions per place. [2020-10-16 02:32:02,461 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 7 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2020-10-16 02:32:02,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 54 flow [2020-10-16 02:32:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:32:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:32:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2020-10-16 02:32:02,479 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2020-10-16 02:32:02,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2020-10-16 02:32:02,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2020-10-16 02:32:02,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:02,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2020-10-16 02:32:02,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:32:02,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:32:02,495 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:32:02,497 INFO L185 Difference]: Start difference. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states and 208 transitions. [2020-10-16 02:32:02,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 54 flow [2020-10-16 02:32:02,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:02,503 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 37 flow [2020-10-16 02:32:02,518 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, 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 02:32:02,519 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2020-10-16 02:32:02,519 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 37 flow [2020-10-16 02:32:02,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:32:02,520 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:02,520 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:02,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 02:32:02,520 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 02:32:02,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:02,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647298, now seen corresponding path program 1 times [2020-10-16 02:32:02,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:02,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771004100] [2020-10-16 02:32:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:02,601 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 02:32:02,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771004100] [2020-10-16 02:32:02,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:02,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 02:32:02,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560759842] [2020-10-16 02:32:02,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 02:32:02,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:02,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 02:32:02,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 02:32:02,607 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2020-10-16 02:32:02,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states. [2020-10-16 02:32:02,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:02,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2020-10-16 02:32:02,608 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:02,641 INFO L129 PetriNetUnfolder]: 11/32 cut-off events. [2020-10-16 02:32:02,641 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 02:32:02,642 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 32 events. 11/32 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 85 event pairs, 4 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 71. Up to 14 conditions per place. [2020-10-16 02:32:02,642 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 4 selfloop transitions, 2 changer transitions 2/13 dead transitions. [2020-10-16 02:32:02,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 55 flow [2020-10-16 02:32:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 02:32:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 02:32:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2020-10-16 02:32:02,646 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.609375 [2020-10-16 02:32:02,647 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 273 transitions. [2020-10-16 02:32:02,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 273 transitions. [2020-10-16 02:32:02,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:02,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 273 transitions. [2020-10-16 02:32:02,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 02:32:02,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 02:32:02,651 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 02:32:02,651 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states and 273 transitions. [2020-10-16 02:32:02,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 55 flow [2020-10-16 02:32:02,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 02:32:02,652 INFO L241 Difference]: Finished difference. Result has 18 places, 9 transitions, 29 flow [2020-10-16 02:32:02,652 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, 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=29, PETRI_PLACES=18, PETRI_TRANSITIONS=9} [2020-10-16 02:32:02,653 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2020-10-16 02:32:02,653 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 9 transitions, 29 flow [2020-10-16 02:32:02,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 02:32:02,654 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:02,654 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:02,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 02:32:02,654 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 02:32:02,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:02,655 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-16 02:32:02,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:02,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95352425] [2020-10-16 02:32:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:32:02,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:32:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:32:02,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:32:02,751 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 02:32:02,751 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 02:32:02,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 02:32:02,752 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 02:32:02,753 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 02:32:02,754 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 02:32:02,770 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,771 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,771 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,772 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,775 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,775 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,776 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,776 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,776 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,776 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,776 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,778 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,778 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,778 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,778 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,778 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,779 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,779 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,779 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,779 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,780 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,780 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,780 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,781 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,781 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,781 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,782 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,783 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,783 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,783 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,783 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,783 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,787 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,788 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,788 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,788 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,788 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,790 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:02,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 02:32:02,795 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:32:02,795 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:32:02,795 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:32:02,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:32:02,795 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:32:02,796 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:32:02,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:32:02,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:32:02,801 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 02:32:02,819 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 02:32:02,819 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 02:32:02,820 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-10-16 02:32:02,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 02:32:02,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 63 transitions, 141 flow [2020-10-16 02:32:02,822 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:32:02,822 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 63 transitions, 141 flow [2020-10-16 02:32:02,822 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 63 transitions, 141 flow [2020-10-16 02:32:02,822 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 68 places, 63 transitions, 141 flow [2020-10-16 02:32:02,837 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 02:32:02,837 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 02:32:02,838 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 72. Up to 6 conditions per place. [2020-10-16 02:32:02,840 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-16 02:32:04,038 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-16 02:32:04,359 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 02:32:04,454 INFO L132 LiptonReduction]: Checked pairs total: 1184 [2020-10-16 02:32:04,454 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 02:32:04,455 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1633 [2020-10-16 02:32:04,456 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 02:32:04,457 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:32:04,457 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:04,458 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:32:04,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:32:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:04,459 INFO L82 PathProgramCache]: Analyzing trace with hash 375535, now seen corresponding path program 1 times [2020-10-16 02:32:04,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:04,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034246942] [2020-10-16 02:32:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:04,548 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 02:32:04,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034246942] [2020-10-16 02:32:04,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:04,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:32:04,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777427274] [2020-10-16 02:32:04,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:32:04,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:04,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:32:04,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:32:04,551 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 131 [2020-10-16 02:32:04,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states. [2020-10-16 02:32:04,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:04,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 131 [2020-10-16 02:32:04,552 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:04,642 INFO L129 PetriNetUnfolder]: 122/218 cut-off events. [2020-10-16 02:32:04,642 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 02:32:04,644 INFO L80 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 218 events. 122/218 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1010 event pairs, 42 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 431. Up to 135 conditions per place. [2020-10-16 02:32:04,649 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 13 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 02:32:04,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 93 flow [2020-10-16 02:32:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:32:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:32:04,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2020-10-16 02:32:04,656 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6692111959287532 [2020-10-16 02:32:04,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2020-10-16 02:32:04,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2020-10-16 02:32:04,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:04,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2020-10-16 02:32:04,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:32:04,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:32:04,661 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:32:04,661 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states and 263 transitions. [2020-10-16 02:32:04,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 93 flow [2020-10-16 02:32:04,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 90 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:04,663 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 63 flow [2020-10-16 02:32:04,663 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, 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 02:32:04,663 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2020-10-16 02:32:04,663 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 63 flow [2020-10-16 02:32:04,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:32:04,664 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:04,664 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:04,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 02:32:04,664 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:32:04,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash 243832858, now seen corresponding path program 1 times [2020-10-16 02:32:04,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:04,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837357340] [2020-10-16 02:32:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:04,772 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 02:32:04,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837357340] [2020-10-16 02:32:04,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:04,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:32:04,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436442077] [2020-10-16 02:32:04,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:32:04,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:04,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:32:04,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:32:04,775 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2020-10-16 02:32:04,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 63 flow. Second operand 5 states. [2020-10-16 02:32:04,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:04,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2020-10-16 02:32:04,776 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:04,907 INFO L129 PetriNetUnfolder]: 126/248 cut-off events. [2020-10-16 02:32:04,907 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-16 02:32:04,908 INFO L80 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 248 events. 126/248 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1263 event pairs, 20 based on Foata normal form. 11/218 useless extension candidates. Maximal degree in co-relation 586. Up to 68 conditions per place. [2020-10-16 02:32:04,910 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 23 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2020-10-16 02:32:04,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 166 flow [2020-10-16 02:32:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:32:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:32:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 505 transitions. [2020-10-16 02:32:04,912 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6424936386768448 [2020-10-16 02:32:04,913 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 505 transitions. [2020-10-16 02:32:04,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 505 transitions. [2020-10-16 02:32:04,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:04,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 505 transitions. [2020-10-16 02:32:04,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:32:04,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:32:04,916 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:32:04,917 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 63 flow. Second operand 6 states and 505 transitions. [2020-10-16 02:32:04,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 166 flow [2020-10-16 02:32:04,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:04,919 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 99 flow [2020-10-16 02:32:04,919 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, 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 02:32:04,920 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2020-10-16 02:32:04,920 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 99 flow [2020-10-16 02:32:04,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:32:04,920 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:04,920 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:04,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 02:32:04,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:32:04,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:04,921 INFO L82 PathProgramCache]: Analyzing trace with hash -88525361, now seen corresponding path program 1 times [2020-10-16 02:32:04,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:04,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146085889] [2020-10-16 02:32:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:04,988 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 02:32:04,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146085889] [2020-10-16 02:32:04,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:04,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:32:04,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589522556] [2020-10-16 02:32:04,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:32:04,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:04,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:32:04,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:32:04,997 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2020-10-16 02:32:04,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 99 flow. Second operand 5 states. [2020-10-16 02:32:04,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:05,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2020-10-16 02:32:05,000 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:05,114 INFO L129 PetriNetUnfolder]: 126/255 cut-off events. [2020-10-16 02:32:05,114 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2020-10-16 02:32:05,115 INFO L80 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 255 events. 126/255 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1283 event pairs, 23 based on Foata normal form. 12/224 useless extension candidates. Maximal degree in co-relation 700. Up to 61 conditions per place. [2020-10-16 02:32:05,117 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 24 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2020-10-16 02:32:05,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 224 flow [2020-10-16 02:32:05,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:32:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:32:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2020-10-16 02:32:05,120 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6437659033078881 [2020-10-16 02:32:05,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 506 transitions. [2020-10-16 02:32:05,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 506 transitions. [2020-10-16 02:32:05,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:05,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 506 transitions. [2020-10-16 02:32:05,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:32:05,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:32:05,125 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:32:05,125 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 99 flow. Second operand 6 states and 506 transitions. [2020-10-16 02:32:05,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 224 flow [2020-10-16 02:32:05,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 213 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 02:32:05,129 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 141 flow [2020-10-16 02:32:05,130 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, 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 02:32:05,130 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2020-10-16 02:32:05,130 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 141 flow [2020-10-16 02:32:05,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:32:05,130 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:05,131 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:05,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 02:32:05,131 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 02:32:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:05,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1548222349, now seen corresponding path program 1 times [2020-10-16 02:32:05,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:05,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102108507] [2020-10-16 02:32:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:32:05,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:32:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:32:05,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:32:05,172 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 02:32:05,172 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 02:32:05,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 02:32:05,173 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 02:32:05,173 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 02:32:05,175 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 02:32:05,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,185 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,185 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,187 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,194 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,194 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,195 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,195 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,197 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,197 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,197 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,197 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,198 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,200 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,200 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,200 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,201 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,209 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,209 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:05,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 02:32:05,211 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:32:05,211 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:32:05,211 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:32:05,212 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:32:05,212 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:32:05,212 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:32:05,212 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:32:05,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:32:05,215 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 02:32:05,231 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 02:32:05,232 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 02:32:05,233 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-10-16 02:32:05,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 02:32:05,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 162 flow [2020-10-16 02:32:05,234 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:32:05,234 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 02:32:05,235 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 02:32:05,235 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 02:32:05,251 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 02:32:05,252 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 02:32:05,253 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2020-10-16 02:32:05,257 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-16 02:32:06,197 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-16 02:32:06,471 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 02:32:06,490 INFO L132 LiptonReduction]: Checked pairs total: 1815 [2020-10-16 02:32:06,490 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 02:32:06,490 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1256 [2020-10-16 02:32:06,491 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 02:32:06,491 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:32:06,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:06,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:32:06,492 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 02:32:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:06,492 INFO L82 PathProgramCache]: Analyzing trace with hash 537369, now seen corresponding path program 1 times [2020-10-16 02:32:06,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:06,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101881859] [2020-10-16 02:32:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:06,522 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 02:32:06,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101881859] [2020-10-16 02:32:06,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:06,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:32:06,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231698612] [2020-10-16 02:32:06,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:32:06,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:06,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:32:06,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:32:06,531 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 147 [2020-10-16 02:32:06,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states. [2020-10-16 02:32:06,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:06,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 147 [2020-10-16 02:32:06,532 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:06,668 INFO L129 PetriNetUnfolder]: 582/877 cut-off events. [2020-10-16 02:32:06,668 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 02:32:06,670 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 877 events. 582/877 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4446 event pairs, 147 based on Foata normal form. 0/675 useless extension candidates. Maximal degree in co-relation 1751. Up to 675 conditions per place. [2020-10-16 02:32:06,675 INFO L132 encePairwiseOnDemand]: 142/147 looper letters, 16 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2020-10-16 02:32:06,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 120 flow [2020-10-16 02:32:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:32:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:32:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2020-10-16 02:32:06,678 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2020-10-16 02:32:06,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2020-10-16 02:32:06,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2020-10-16 02:32:06,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:06,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2020-10-16 02:32:06,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:32:06,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:32:06,680 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:32:06,680 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states and 297 transitions. [2020-10-16 02:32:06,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 120 flow [2020-10-16 02:32:06,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 113 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:06,682 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 81 flow [2020-10-16 02:32:06,682 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, 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 02:32:06,683 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 02:32:06,683 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 81 flow [2020-10-16 02:32:06,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:32:06,683 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:06,684 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:06,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 02:32:06,684 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 02:32:06,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:06,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1157508092, now seen corresponding path program 1 times [2020-10-16 02:32:06,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:06,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055652798] [2020-10-16 02:32:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:06,738 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 02:32:06,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055652798] [2020-10-16 02:32:06,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:06,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:32:06,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873210881] [2020-10-16 02:32:06,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:32:06,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:06,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:32:06,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:32:06,744 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 147 [2020-10-16 02:32:06,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 81 flow. Second operand 5 states. [2020-10-16 02:32:06,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:06,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 147 [2020-10-16 02:32:06,745 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:06,955 INFO L129 PetriNetUnfolder]: 740/1180 cut-off events. [2020-10-16 02:32:06,955 INFO L130 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2020-10-16 02:32:06,959 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 1180 events. 740/1180 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 6973 event pairs, 109 based on Foata normal form. 35/1052 useless extension candidates. Maximal degree in co-relation 2862. Up to 449 conditions per place. [2020-10-16 02:32:06,966 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 34 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2020-10-16 02:32:06,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 245 flow [2020-10-16 02:32:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:32:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:32:06,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 585 transitions. [2020-10-16 02:32:06,969 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2020-10-16 02:32:06,969 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 585 transitions. [2020-10-16 02:32:06,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 585 transitions. [2020-10-16 02:32:06,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:06,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 585 transitions. [2020-10-16 02:32:06,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:32:06,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:32:06,973 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:32:06,973 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 81 flow. Second operand 6 states and 585 transitions. [2020-10-16 02:32:06,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 245 flow [2020-10-16 02:32:06,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:06,977 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 142 flow [2020-10-16 02:32:06,977 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, 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 02:32:06,978 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2020-10-16 02:32:06,978 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 142 flow [2020-10-16 02:32:06,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:32:06,978 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:06,979 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:06,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 02:32:06,980 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 02:32:06,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:06,980 INFO L82 PathProgramCache]: Analyzing trace with hash -204391609, now seen corresponding path program 1 times [2020-10-16 02:32:06,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:06,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826225682] [2020-10-16 02:32:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:07,042 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 02:32:07,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826225682] [2020-10-16 02:32:07,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:07,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:32:07,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032997640] [2020-10-16 02:32:07,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:32:07,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:07,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:32:07,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:32:07,045 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 147 [2020-10-16 02:32:07,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 142 flow. Second operand 5 states. [2020-10-16 02:32:07,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:07,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 147 [2020-10-16 02:32:07,046 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:07,295 INFO L129 PetriNetUnfolder]: 895/1501 cut-off events. [2020-10-16 02:32:07,296 INFO L130 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2020-10-16 02:32:07,302 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4403 conditions, 1501 events. 895/1501 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 9894 event pairs, 147 based on Foata normal form. 47/1334 useless extension candidates. Maximal degree in co-relation 4386. Up to 588 conditions per place. [2020-10-16 02:32:07,315 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 40 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2020-10-16 02:32:07,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 395 flow [2020-10-16 02:32:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:32:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:32:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2020-10-16 02:32:07,319 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6643990929705216 [2020-10-16 02:32:07,319 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 586 transitions. [2020-10-16 02:32:07,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 586 transitions. [2020-10-16 02:32:07,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:07,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 586 transitions. [2020-10-16 02:32:07,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:32:07,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:32:07,326 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:32:07,326 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 142 flow. Second operand 6 states and 586 transitions. [2020-10-16 02:32:07,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 395 flow [2020-10-16 02:32:07,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 374 flow, removed 4 selfloop flow, removed 2 redundant places. [2020-10-16 02:32:07,338 INFO L241 Difference]: Finished difference. Result has 44 places, 37 transitions, 244 flow [2020-10-16 02:32:07,338 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, 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 02:32:07,338 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2020-10-16 02:32:07,338 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 244 flow [2020-10-16 02:32:07,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:32:07,339 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:07,339 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:07,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 02:32:07,339 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 02:32:07,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:07,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1864579528, now seen corresponding path program 1 times [2020-10-16 02:32:07,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:07,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444783516] [2020-10-16 02:32:07,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:07,410 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 02:32:07,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444783516] [2020-10-16 02:32:07,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075797350] [2020-10-16 02:32:07,411 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 02:32:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:07,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:32:07,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:32:07,587 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 02:32:07,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:32:07,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:32:07,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107375441] [2020-10-16 02:32:07,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:32:07,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:07,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:32:07,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:32:07,591 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 147 [2020-10-16 02:32:07,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 244 flow. Second operand 12 states. [2020-10-16 02:32:07,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:07,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 147 [2020-10-16 02:32:07,593 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:08,077 INFO L129 PetriNetUnfolder]: 908/1533 cut-off events. [2020-10-16 02:32:08,078 INFO L130 PetriNetUnfolder]: For 1821/1821 co-relation queries the response was YES. [2020-10-16 02:32:08,083 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5231 conditions, 1533 events. 908/1533 cut-off events. For 1821/1821 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 10309 event pairs, 98 based on Foata normal form. 11/1325 useless extension candidates. Maximal degree in co-relation 5211. Up to 462 conditions per place. [2020-10-16 02:32:08,094 INFO L132 encePairwiseOnDemand]: 140/147 looper letters, 63 selfloop transitions, 29 changer transitions 0/98 dead transitions. [2020-10-16 02:32:08,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 650 flow [2020-10-16 02:32:08,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:32:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:32:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1234 transitions. [2020-10-16 02:32:08,099 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6457352171637886 [2020-10-16 02:32:08,099 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1234 transitions. [2020-10-16 02:32:08,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1234 transitions. [2020-10-16 02:32:08,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:08,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1234 transitions. [2020-10-16 02:32:08,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:32:08,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:32:08,108 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:32:08,108 INFO L185 Difference]: Start difference. First operand has 44 places, 37 transitions, 244 flow. Second operand 13 states and 1234 transitions. [2020-10-16 02:32:08,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 650 flow [2020-10-16 02:32:08,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 634 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:08,137 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 388 flow [2020-10-16 02:32:08,137 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, 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 02:32:08,138 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2020-10-16 02:32:08,138 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 388 flow [2020-10-16 02:32:08,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:32:08,138 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:08,138 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:08,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 02:32:08,352 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 02:32:08,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:08,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1148161428, now seen corresponding path program 2 times [2020-10-16 02:32:08,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:08,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076930594] [2020-10-16 02:32:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:08,410 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 02:32:08,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076930594] [2020-10-16 02:32:08,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:08,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:32:08,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904320009] [2020-10-16 02:32:08,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:32:08,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:08,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:32:08,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:32:08,413 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 147 [2020-10-16 02:32:08,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 388 flow. Second operand 7 states. [2020-10-16 02:32:08,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:08,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 147 [2020-10-16 02:32:08,413 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:08,805 INFO L129 PetriNetUnfolder]: 920/1573 cut-off events. [2020-10-16 02:32:08,806 INFO L130 PetriNetUnfolder]: For 3297/3297 co-relation queries the response was YES. [2020-10-16 02:32:08,813 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5993 conditions, 1573 events. 920/1573 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 10789 event pairs, 101 based on Foata normal form. 11/1360 useless extension candidates. Maximal degree in co-relation 5969. Up to 392 conditions per place. [2020-10-16 02:32:08,824 INFO L132 encePairwiseOnDemand]: 140/147 looper letters, 64 selfloop transitions, 32 changer transitions 0/102 dead transitions. [2020-10-16 02:32:08,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 102 transitions, 773 flow [2020-10-16 02:32:08,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:32:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:32:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1234 transitions. [2020-10-16 02:32:08,829 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6457352171637886 [2020-10-16 02:32:08,829 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1234 transitions. [2020-10-16 02:32:08,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1234 transitions. [2020-10-16 02:32:08,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:08,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1234 transitions. [2020-10-16 02:32:08,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:32:08,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:32:08,836 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:32:08,836 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 388 flow. Second operand 13 states and 1234 transitions. [2020-10-16 02:32:08,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 102 transitions, 773 flow [2020-10-16 02:32:08,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 710 flow, removed 6 selfloop flow, removed 7 redundant places. [2020-10-16 02:32:08,871 INFO L241 Difference]: Finished difference. Result has 66 places, 52 transitions, 455 flow [2020-10-16 02:32:08,872 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, 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 02:32:08,872 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2020-10-16 02:32:08,872 INFO L481 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 455 flow [2020-10-16 02:32:08,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:32:08,872 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:08,873 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:08,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 02:32:08,873 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 02:32:08,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:08,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1717126990, now seen corresponding path program 1 times [2020-10-16 02:32:08,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:08,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433476093] [2020-10-16 02:32:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:08,916 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 02:32:08,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433476093] [2020-10-16 02:32:08,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:08,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:32:08,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127409630] [2020-10-16 02:32:08,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:32:08,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:32:08,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:32:08,918 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 147 [2020-10-16 02:32:08,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 455 flow. Second operand 5 states. [2020-10-16 02:32:08,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:08,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 147 [2020-10-16 02:32:08,919 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:09,215 INFO L129 PetriNetUnfolder]: 1041/1845 cut-off events. [2020-10-16 02:32:09,215 INFO L130 PetriNetUnfolder]: For 5664/5670 co-relation queries the response was YES. [2020-10-16 02:32:09,224 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7280 conditions, 1845 events. 1041/1845 cut-off events. For 5664/5670 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 13375 event pairs, 120 based on Foata normal form. 63/1634 useless extension candidates. Maximal degree in co-relation 7254. Up to 781 conditions per place. [2020-10-16 02:32:09,234 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 66 selfloop transitions, 30 changer transitions 0/103 dead transitions. [2020-10-16 02:32:09,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 1059 flow [2020-10-16 02:32:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:32:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:32:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2020-10-16 02:32:09,237 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6575963718820862 [2020-10-16 02:32:09,238 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2020-10-16 02:32:09,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2020-10-16 02:32:09,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:09,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2020-10-16 02:32:09,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:32:09,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:32:09,241 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:32:09,241 INFO L185 Difference]: Start difference. First operand has 66 places, 52 transitions, 455 flow. Second operand 6 states and 580 transitions. [2020-10-16 02:32:09,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 1059 flow [2020-10-16 02:32:09,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 946 flow, removed 10 selfloop flow, removed 9 redundant places. [2020-10-16 02:32:09,289 INFO L241 Difference]: Finished difference. Result has 65 places, 73 transitions, 739 flow [2020-10-16 02:32:09,289 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, 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 02:32:09,289 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2020-10-16 02:32:09,289 INFO L481 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 739 flow [2020-10-16 02:32:09,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:32:09,290 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:09,290 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:09,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 02:32:09,290 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 02:32:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:09,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1694375059, now seen corresponding path program 1 times [2020-10-16 02:32:09,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:09,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263918113] [2020-10-16 02:32:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:32:09,301 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:32:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:32:09,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:32:09,315 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 02:32:09,315 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 02:32:09,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 02:32:09,316 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 02:32:09,316 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 02:32:09,316 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 02:32:09,328 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,328 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,328 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,328 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,329 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,329 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,329 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,329 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,329 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,329 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,330 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,330 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,330 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,330 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,330 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,330 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,330 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,331 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,331 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,335 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,335 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,336 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,338 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,339 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,339 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,339 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,339 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,340 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,340 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,341 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,341 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,341 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,342 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,342 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,342 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,342 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,342 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,343 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,344 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,344 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,344 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,344 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,345 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,345 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,346 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,346 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,347 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,347 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,348 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,349 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,349 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,350 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,351 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,351 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:32:09,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 02:32:09,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:32:09,352 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:32:09,353 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:32:09,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:32:09,353 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:32:09,353 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:32:09,353 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:32:09,353 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:32:09,355 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 02:32:09,365 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 02:32:09,365 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 02:32:09,366 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-10-16 02:32:09,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 02:32:09,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 185 flow [2020-10-16 02:32:09,367 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:32:09,367 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 185 flow [2020-10-16 02:32:09,367 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 185 flow [2020-10-16 02:32:09,367 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 185 flow [2020-10-16 02:32:09,377 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 02:32:09,377 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 02:32:09,378 INFO L80 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 125. Up to 10 conditions per place. [2020-10-16 02:32:09,381 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-16 02:32:10,300 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-16 02:32:10,635 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 02:32:10,771 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 02:32:10,779 INFO L132 LiptonReduction]: Checked pairs total: 2872 [2020-10-16 02:32:10,779 INFO L134 LiptonReduction]: Total number of compositions: 64 [2020-10-16 02:32:10,780 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1413 [2020-10-16 02:32:10,781 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 02:32:10,781 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:32:10,781 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:10,781 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:32:10,781 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 02:32:10,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:10,782 INFO L82 PathProgramCache]: Analyzing trace with hash 719895, now seen corresponding path program 1 times [2020-10-16 02:32:10,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:10,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268581579] [2020-10-16 02:32:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:10,802 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 02:32:10,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268581579] [2020-10-16 02:32:10,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:10,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:32:10,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804086] [2020-10-16 02:32:10,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:32:10,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:10,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:32:10,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:32:10,804 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 170 [2020-10-16 02:32:10,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states. [2020-10-16 02:32:10,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:10,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 170 [2020-10-16 02:32:10,805 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:11,117 INFO L129 PetriNetUnfolder]: 2434/3340 cut-off events. [2020-10-16 02:32:11,118 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 02:32:11,127 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6692 conditions, 3340 events. 2434/3340 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 18034 event pairs, 518 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 6680. Up to 2863 conditions per place. [2020-10-16 02:32:11,150 INFO L132 encePairwiseOnDemand]: 164/170 looper letters, 19 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2020-10-16 02:32:11,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 149 flow [2020-10-16 02:32:11,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:32:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:32:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2020-10-16 02:32:11,154 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2020-10-16 02:32:11,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2020-10-16 02:32:11,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2020-10-16 02:32:11,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:11,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2020-10-16 02:32:11,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:32:11,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:32:11,159 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:32:11,159 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states and 337 transitions. [2020-10-16 02:32:11,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 149 flow [2020-10-16 02:32:11,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 136 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:11,162 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 99 flow [2020-10-16 02:32:11,162 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:11,162 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 02:32:11,162 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 99 flow [2020-10-16 02:32:11,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:32:11,163 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:11,163 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:11,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 02:32:11,163 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 02:32:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1994870888, now seen corresponding path program 1 times [2020-10-16 02:32:11,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:11,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110427374] [2020-10-16 02:32:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:11,212 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 02:32:11,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110427374] [2020-10-16 02:32:11,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:11,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:32:11,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938373521] [2020-10-16 02:32:11,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:32:11,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:11,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:32:11,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:32:11,215 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 170 [2020-10-16 02:32:11,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 99 flow. Second operand 5 states. [2020-10-16 02:32:11,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:11,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 170 [2020-10-16 02:32:11,216 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:11,723 INFO L129 PetriNetUnfolder]: 3576/5078 cut-off events. [2020-10-16 02:32:11,723 INFO L130 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2020-10-16 02:32:11,739 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12418 conditions, 5078 events. 3576/5078 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 31693 event pairs, 508 based on Foata normal form. 107/4599 useless extension candidates. Maximal degree in co-relation 12404. Up to 2253 conditions per place. [2020-10-16 02:32:11,776 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 41 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2020-10-16 02:32:11,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 304 flow [2020-10-16 02:32:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:32:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:32:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2020-10-16 02:32:11,779 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.653921568627451 [2020-10-16 02:32:11,779 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2020-10-16 02:32:11,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2020-10-16 02:32:11,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:11,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2020-10-16 02:32:11,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:32:11,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:32:11,784 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:32:11,784 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 99 flow. Second operand 6 states and 667 transitions. [2020-10-16 02:32:11,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 304 flow [2020-10-16 02:32:11,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:11,787 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 179 flow [2020-10-16 02:32:11,787 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:11,788 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2020-10-16 02:32:11,788 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 179 flow [2020-10-16 02:32:11,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:32:11,788 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:11,788 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:11,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 02:32:11,788 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 02:32:11,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:11,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1753297957, now seen corresponding path program 1 times [2020-10-16 02:32:11,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:11,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514888947] [2020-10-16 02:32:11,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:11,821 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 02:32:11,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514888947] [2020-10-16 02:32:11,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:11,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:32:11,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245354237] [2020-10-16 02:32:11,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:32:11,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:11,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:32:11,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:32:11,827 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 02:32:11,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 179 flow. Second operand 5 states. [2020-10-16 02:32:11,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:11,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 02:32:11,828 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:12,474 INFO L129 PetriNetUnfolder]: 5127/7515 cut-off events. [2020-10-16 02:32:12,474 INFO L130 PetriNetUnfolder]: For 4030/4030 co-relation queries the response was YES. [2020-10-16 02:32:12,504 INFO L80 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 7515 events. 5127/7515 cut-off events. For 4030/4030 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 52488 event pairs, 842 based on Foata normal form. 157/6792 useless extension candidates. Maximal degree in co-relation 22400. Up to 3474 conditions per place. [2020-10-16 02:32:12,538 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 49 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2020-10-16 02:32:12,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 502 flow [2020-10-16 02:32:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:32:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:32:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 02:32:12,542 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 02:32:12,542 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 02:32:12,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 02:32:12,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:12,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 02:32:12,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:32:12,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:32:12,546 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:32:12,546 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 179 flow. Second operand 6 states and 662 transitions. [2020-10-16 02:32:12,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 502 flow [2020-10-16 02:32:12,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 471 flow, removed 6 selfloop flow, removed 2 redundant places. [2020-10-16 02:32:12,572 INFO L241 Difference]: Finished difference. Result has 49 places, 46 transitions, 311 flow [2020-10-16 02:32:12,572 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:12,572 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2020-10-16 02:32:12,572 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 311 flow [2020-10-16 02:32:12,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:32:12,573 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:12,573 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:12,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 02:32:12,573 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 02:32:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:12,573 INFO L82 PathProgramCache]: Analyzing trace with hash 180892130, now seen corresponding path program 1 times [2020-10-16 02:32:12,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:12,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448105289] [2020-10-16 02:32:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:12,624 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 02:32:12,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448105289] [2020-10-16 02:32:12,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945402311] [2020-10-16 02:32:12,625 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 02:32:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:12,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:32:12,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:32:12,748 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 02:32:12,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:32:12,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:32:12,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905191205] [2020-10-16 02:32:12,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:32:12,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:32:12,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:32:12,751 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 02:32:12,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 311 flow. Second operand 12 states. [2020-10-16 02:32:12,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:12,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 02:32:12,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:13,669 INFO L129 PetriNetUnfolder]: 5374/7933 cut-off events. [2020-10-16 02:32:13,669 INFO L130 PetriNetUnfolder]: For 8803/8803 co-relation queries the response was YES. [2020-10-16 02:32:13,685 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27433 conditions, 7933 events. 5374/7933 cut-off events. For 8803/8803 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 56592 event pairs, 681 based on Foata normal form. 35/7031 useless extension candidates. Maximal degree in co-relation 27412. Up to 2761 conditions per place. [2020-10-16 02:32:13,717 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 85 selfloop transitions, 38 changer transitions 0/130 dead transitions. [2020-10-16 02:32:13,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 130 transitions, 879 flow [2020-10-16 02:32:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:32:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:32:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1407 transitions. [2020-10-16 02:32:13,722 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6366515837104072 [2020-10-16 02:32:13,722 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1407 transitions. [2020-10-16 02:32:13,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1407 transitions. [2020-10-16 02:32:13,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:13,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1407 transitions. [2020-10-16 02:32:13,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:32:13,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:32:13,731 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:32:13,731 INFO L185 Difference]: Start difference. First operand has 49 places, 46 transitions, 311 flow. Second operand 13 states and 1407 transitions. [2020-10-16 02:32:13,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 130 transitions, 879 flow [2020-10-16 02:32:13,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 130 transitions, 853 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:13,848 INFO L241 Difference]: Finished difference. Result has 63 places, 59 transitions, 496 flow [2020-10-16 02:32:13,848 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:13,848 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2020-10-16 02:32:13,848 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 496 flow [2020-10-16 02:32:13,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:32:13,849 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:13,849 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:14,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 02:32:14,064 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 02:32:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:14,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1292148820, now seen corresponding path program 2 times [2020-10-16 02:32:14,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:14,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814616810] [2020-10-16 02:32:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:14,113 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 02:32:14,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814616810] [2020-10-16 02:32:14,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:14,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:32:14,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385656807] [2020-10-16 02:32:14,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:32:14,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:14,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:32:14,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:32:14,116 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 02:32:14,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 496 flow. Second operand 7 states. [2020-10-16 02:32:14,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:14,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 02:32:14,117 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:15,038 INFO L129 PetriNetUnfolder]: 5620/8365 cut-off events. [2020-10-16 02:32:15,038 INFO L130 PetriNetUnfolder]: For 15853/15853 co-relation queries the response was YES. [2020-10-16 02:32:15,062 INFO L80 FinitePrefix]: Finished finitePrefix Result has 32402 conditions, 8365 events. 5620/8365 cut-off events. For 15853/15853 co-relation queries the response was YES. Maximal size of possible extension queue 1114. Compared 61420 event pairs, 704 based on Foata normal form. 35/7398 useless extension candidates. Maximal degree in co-relation 32377. Up to 2492 conditions per place. [2020-10-16 02:32:15,098 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 88 selfloop transitions, 43 changer transitions 0/138 dead transitions. [2020-10-16 02:32:15,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 138 transitions, 1076 flow [2020-10-16 02:32:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:32:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:32:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1407 transitions. [2020-10-16 02:32:15,103 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6366515837104072 [2020-10-16 02:32:15,104 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1407 transitions. [2020-10-16 02:32:15,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1407 transitions. [2020-10-16 02:32:15,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:15,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1407 transitions. [2020-10-16 02:32:15,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:32:15,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:32:15,111 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:32:15,112 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 496 flow. Second operand 13 states and 1407 transitions. [2020-10-16 02:32:15,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 138 transitions, 1076 flow [2020-10-16 02:32:15,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 992 flow, removed 8 selfloop flow, removed 7 redundant places. [2020-10-16 02:32:15,374 INFO L241 Difference]: Finished difference. Result has 71 places, 68 transitions, 613 flow [2020-10-16 02:32:15,374 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:15,374 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2020-10-16 02:32:15,374 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 613 flow [2020-10-16 02:32:15,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:32:15,375 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:15,375 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:15,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 02:32:15,375 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 02:32:15,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:15,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1688505154, now seen corresponding path program 1 times [2020-10-16 02:32:15,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:15,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485888904] [2020-10-16 02:32:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:15,437 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 02:32:15,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485888904] [2020-10-16 02:32:15,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:15,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:32:15,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585167881] [2020-10-16 02:32:15,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:32:15,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:15,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:32:15,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:32:15,440 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 02:32:15,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 613 flow. Second operand 5 states. [2020-10-16 02:32:15,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:15,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 02:32:15,441 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:16,605 INFO L129 PetriNetUnfolder]: 7715/11859 cut-off events. [2020-10-16 02:32:16,605 INFO L130 PetriNetUnfolder]: For 36680/36686 co-relation queries the response was YES. [2020-10-16 02:32:16,653 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50277 conditions, 11859 events. 7715/11859 cut-off events. For 36680/36686 co-relation queries the response was YES. Maximal size of possible extension queue 1754. Compared 95204 event pairs, 1208 based on Foata normal form. 250/10625 useless extension candidates. Maximal degree in co-relation 50250. Up to 5721 conditions per place. [2020-10-16 02:32:16,704 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 98 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2020-10-16 02:32:16,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 146 transitions, 1574 flow [2020-10-16 02:32:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:32:16,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:32:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 02:32:16,706 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 02:32:16,706 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 02:32:16,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 02:32:16,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:16,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 02:32:16,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:32:16,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:32:16,709 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:32:16,710 INFO L185 Difference]: Start difference. First operand has 71 places, 68 transitions, 613 flow. Second operand 6 states and 662 transitions. [2020-10-16 02:32:16,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 146 transitions, 1574 flow [2020-10-16 02:32:17,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 146 transitions, 1401 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-16 02:32:17,133 INFO L241 Difference]: Finished difference. Result has 70 places, 95 transitions, 962 flow [2020-10-16 02:32:17,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:17,134 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2020-10-16 02:32:17,134 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 962 flow [2020-10-16 02:32:17,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:32:17,134 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:17,134 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:17,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 02:32:17,134 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 02:32:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:17,135 INFO L82 PathProgramCache]: Analyzing trace with hash -2001719257, now seen corresponding path program 1 times [2020-10-16 02:32:17,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:17,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798950615] [2020-10-16 02:32:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:17,186 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 02:32:17,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798950615] [2020-10-16 02:32:17,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067479312] [2020-10-16 02:32:17,186 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 02:32:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:17,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:32:17,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:32:17,334 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 02:32:17,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:32:17,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:32:17,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303916649] [2020-10-16 02:32:17,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:32:17,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:17,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:32:17,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:32:17,338 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 02:32:17,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 962 flow. Second operand 12 states. [2020-10-16 02:32:17,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:17,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 02:32:17,339 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:19,818 INFO L129 PetriNetUnfolder]: 8077/12514 cut-off events. [2020-10-16 02:32:19,819 INFO L130 PetriNetUnfolder]: For 45738/45744 co-relation queries the response was YES. [2020-10-16 02:32:19,864 INFO L80 FinitePrefix]: Finished finitePrefix Result has 56287 conditions, 12514 events. 8077/12514 cut-off events. For 45738/45744 co-relation queries the response was YES. Maximal size of possible extension queue 1913. Compared 103333 event pairs, 990 based on Foata normal form. 75/11018 useless extension candidates. Maximal degree in co-relation 56257. Up to 3566 conditions per place. [2020-10-16 02:32:19,898 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 116 selfloop transitions, 80 changer transitions 0/203 dead transitions. [2020-10-16 02:32:19,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 203 transitions, 2090 flow [2020-10-16 02:32:19,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:32:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:32:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2020-10-16 02:32:19,901 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6375565610859728 [2020-10-16 02:32:19,901 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2020-10-16 02:32:19,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2020-10-16 02:32:19,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:19,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2020-10-16 02:32:19,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:32:19,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:32:19,907 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:32:19,907 INFO L185 Difference]: Start difference. First operand has 70 places, 95 transitions, 962 flow. Second operand 13 states and 1409 transitions. [2020-10-16 02:32:19,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 203 transitions, 2090 flow [2020-10-16 02:32:20,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 203 transitions, 2025 flow, removed 28 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:20,719 INFO L241 Difference]: Finished difference. Result has 84 places, 121 transitions, 1430 flow [2020-10-16 02:32:20,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:20,720 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2020-10-16 02:32:20,720 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 121 transitions, 1430 flow [2020-10-16 02:32:20,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:32:20,720 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:20,720 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:20,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:32:20,929 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 02:32:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:20,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2144894803, now seen corresponding path program 1 times [2020-10-16 02:32:20,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:20,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472917135] [2020-10-16 02:32:20,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:20,981 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 02:32:20,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472917135] [2020-10-16 02:32:20,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507245266] [2020-10-16 02:32:20,982 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 02:32:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:21,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:32:21,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:32:21,103 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 02:32:21,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:32:21,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:32:21,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938760879] [2020-10-16 02:32:21,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:32:21,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:21,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:32:21,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:32:21,106 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 170 [2020-10-16 02:32:21,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 121 transitions, 1430 flow. Second operand 12 states. [2020-10-16 02:32:21,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:21,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 170 [2020-10-16 02:32:21,107 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:22,550 INFO L129 PetriNetUnfolder]: 8352/13049 cut-off events. [2020-10-16 02:32:22,550 INFO L130 PetriNetUnfolder]: For 64367/64367 co-relation queries the response was YES. [2020-10-16 02:32:22,618 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63154 conditions, 13049 events. 8352/13049 cut-off events. For 64367/64367 co-relation queries the response was YES. Maximal size of possible extension queue 2045. Compared 109437 event pairs, 925 based on Foata normal form. 69/11477 useless extension candidates. Maximal degree in co-relation 63120. Up to 3075 conditions per place. [2020-10-16 02:32:22,658 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 136 selfloop transitions, 91 changer transitions 0/234 dead transitions. [2020-10-16 02:32:22,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 234 transitions, 2751 flow [2020-10-16 02:32:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:32:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:32:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2020-10-16 02:32:22,660 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6321266968325792 [2020-10-16 02:32:22,661 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2020-10-16 02:32:22,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2020-10-16 02:32:22,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:22,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2020-10-16 02:32:22,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:32:22,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:32:22,665 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:32:22,666 INFO L185 Difference]: Start difference. First operand has 84 places, 121 transitions, 1430 flow. Second operand 13 states and 1397 transitions. [2020-10-16 02:32:22,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 234 transitions, 2751 flow [2020-10-16 02:32:24,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 234 transitions, 2666 flow, removed 26 selfloop flow, removed 3 redundant places. [2020-10-16 02:32:24,226 INFO L241 Difference]: Finished difference. Result has 96 places, 150 transitions, 1973 flow [2020-10-16 02:32:24,226 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:24,226 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2020-10-16 02:32:24,227 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 150 transitions, 1973 flow [2020-10-16 02:32:24,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:32:24,227 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:24,227 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:24,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:32:24,428 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 02:32:24,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash 844187883, now seen corresponding path program 2 times [2020-10-16 02:32:24,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:24,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010685074] [2020-10-16 02:32:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:24,492 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 02:32:24,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010685074] [2020-10-16 02:32:24,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:24,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:32:24,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153267914] [2020-10-16 02:32:24,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:32:24,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:24,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:32:24,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:32:24,496 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 170 [2020-10-16 02:32:24,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 150 transitions, 1973 flow. Second operand 7 states. [2020-10-16 02:32:24,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:24,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 170 [2020-10-16 02:32:24,497 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:25,924 INFO L129 PetriNetUnfolder]: 8613/13540 cut-off events. [2020-10-16 02:32:25,924 INFO L130 PetriNetUnfolder]: For 83921/83921 co-relation queries the response was YES. [2020-10-16 02:32:26,008 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70630 conditions, 13540 events. 8613/13540 cut-off events. For 83921/83921 co-relation queries the response was YES. Maximal size of possible extension queue 2164. Compared 115485 event pairs, 978 based on Foata normal form. 55/11876 useless extension candidates. Maximal degree in co-relation 70593. Up to 3100 conditions per place. [2020-10-16 02:32:26,268 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 144 selfloop transitions, 100 changer transitions 0/251 dead transitions. [2020-10-16 02:32:26,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 251 transitions, 3208 flow [2020-10-16 02:32:26,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:32:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:32:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2020-10-16 02:32:26,270 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6321266968325792 [2020-10-16 02:32:26,270 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2020-10-16 02:32:26,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2020-10-16 02:32:26,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:26,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2020-10-16 02:32:26,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:32:26,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:32:26,274 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:32:26,274 INFO L185 Difference]: Start difference. First operand has 96 places, 150 transitions, 1973 flow. Second operand 13 states and 1397 transitions. [2020-10-16 02:32:26,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 251 transitions, 3208 flow [2020-10-16 02:32:28,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 251 transitions, 3156 flow, removed 24 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:28,127 INFO L241 Difference]: Finished difference. Result has 110 places, 167 transitions, 2420 flow [2020-10-16 02:32:28,128 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:28,128 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 76 predicate places. [2020-10-16 02:32:28,128 INFO L481 AbstractCegarLoop]: Abstraction has has 110 places, 167 transitions, 2420 flow [2020-10-16 02:32:28,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:32:28,128 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:28,128 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:28,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 02:32:28,129 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 02:32:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:28,129 INFO L82 PathProgramCache]: Analyzing trace with hash 844192719, now seen corresponding path program 2 times [2020-10-16 02:32:28,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:28,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559818611] [2020-10-16 02:32:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:28,180 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 02:32:28,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559818611] [2020-10-16 02:32:28,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:28,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:32:28,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998817400] [2020-10-16 02:32:28,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:32:28,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:28,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:32:28,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:32:28,182 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 02:32:28,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 167 transitions, 2420 flow. Second operand 7 states. [2020-10-16 02:32:28,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:28,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 02:32:28,183 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:29,908 INFO L129 PetriNetUnfolder]: 8876/14053 cut-off events. [2020-10-16 02:32:29,908 INFO L130 PetriNetUnfolder]: For 108485/108491 co-relation queries the response was YES. [2020-10-16 02:32:29,992 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78185 conditions, 14053 events. 8876/14053 cut-off events. For 108485/108491 co-relation queries the response was YES. Maximal size of possible extension queue 2296. Compared 121675 event pairs, 1016 based on Foata normal form. 75/12311 useless extension candidates. Maximal degree in co-relation 78144. Up to 3184 conditions per place. [2020-10-16 02:32:30,034 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 148 selfloop transitions, 113 changer transitions 0/268 dead transitions. [2020-10-16 02:32:30,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 268 transitions, 3804 flow [2020-10-16 02:32:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:32:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:32:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2020-10-16 02:32:30,037 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6375565610859728 [2020-10-16 02:32:30,037 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2020-10-16 02:32:30,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2020-10-16 02:32:30,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:30,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2020-10-16 02:32:30,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:32:30,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:32:30,040 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:32:30,040 INFO L185 Difference]: Start difference. First operand has 110 places, 167 transitions, 2420 flow. Second operand 13 states and 1409 transitions. [2020-10-16 02:32:30,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 268 transitions, 3804 flow [2020-10-16 02:32:32,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 268 transitions, 3557 flow, removed 29 selfloop flow, removed 9 redundant places. [2020-10-16 02:32:32,763 INFO L241 Difference]: Finished difference. Result has 116 places, 189 transitions, 2838 flow [2020-10-16 02:32:32,763 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:32,763 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2020-10-16 02:32:32,763 INFO L481 AbstractCegarLoop]: Abstraction has has 116 places, 189 transitions, 2838 flow [2020-10-16 02:32:32,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:32:32,763 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:32,764 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:32,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 02:32:32,764 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 02:32:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:32,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1920026451, now seen corresponding path program 1 times [2020-10-16 02:32:32,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:32,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028073928] [2020-10-16 02:32:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:32,808 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 02:32:32,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028073928] [2020-10-16 02:32:32,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:32,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:32:32,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544932132] [2020-10-16 02:32:32,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:32:32,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:32,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:32:32,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:32:32,811 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 02:32:32,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 189 transitions, 2838 flow. Second operand 5 states. [2020-10-16 02:32:32,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:32,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 02:32:32,812 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:35,062 INFO L129 PetriNetUnfolder]: 11650/18969 cut-off events. [2020-10-16 02:32:35,062 INFO L130 PetriNetUnfolder]: For 193622/193661 co-relation queries the response was YES. [2020-10-16 02:32:35,218 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107448 conditions, 18969 events. 11650/18969 cut-off events. For 193622/193661 co-relation queries the response was YES. Maximal size of possible extension queue 3339. Compared 175143 event pairs, 1305 based on Foata normal form. 415/16918 useless extension candidates. Maximal degree in co-relation 107404. Up to 10089 conditions per place. [2020-10-16 02:32:35,289 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 279 selfloop transitions, 89 changer transitions 0/376 dead transitions. [2020-10-16 02:32:35,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 376 transitions, 6442 flow [2020-10-16 02:32:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:32:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:32:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 02:32:35,291 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 02:32:35,291 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 02:32:35,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 02:32:35,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:35,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 02:32:35,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:32:35,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:32:35,293 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:32:35,293 INFO L185 Difference]: Start difference. First operand has 116 places, 189 transitions, 2838 flow. Second operand 6 states and 662 transitions. [2020-10-16 02:32:35,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 376 transitions, 6442 flow [2020-10-16 02:32:40,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 376 transitions, 6204 flow, removed 45 selfloop flow, removed 6 redundant places. [2020-10-16 02:32:40,688 INFO L241 Difference]: Finished difference. Result has 118 places, 257 transitions, 4245 flow [2020-10-16 02:32:40,688 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:40,689 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 84 predicate places. [2020-10-16 02:32:40,689 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 257 transitions, 4245 flow [2020-10-16 02:32:40,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:32:40,689 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:40,690 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:40,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-16 02:32:40,690 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 02:32:40,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1825254528, now seen corresponding path program 1 times [2020-10-16 02:32:40,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:40,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942635074] [2020-10-16 02:32:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:40,757 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 02:32:40,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942635074] [2020-10-16 02:32:40,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466510940] [2020-10-16 02:32:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 02:32:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:40,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 02:32:40,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:32:40,943 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 02:32:40,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:32:40,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 02:32:40,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98401117] [2020-10-16 02:32:40,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 02:32:40,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:40,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 02:32:40,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 02:32:40,946 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:32:40,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 257 transitions, 4245 flow. Second operand 16 states. [2020-10-16 02:32:40,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:40,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:32:40,948 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:44,067 INFO L129 PetriNetUnfolder]: 11355/18487 cut-off events. [2020-10-16 02:32:44,067 INFO L130 PetriNetUnfolder]: For 186352/186352 co-relation queries the response was YES. [2020-10-16 02:32:44,247 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109323 conditions, 18487 events. 11355/18487 cut-off events. For 186352/186352 co-relation queries the response was YES. Maximal size of possible extension queue 3363. Compared 175311 event pairs, 834 based on Foata normal form. 17/16057 useless extension candidates. Maximal degree in co-relation 109276. Up to 3848 conditions per place. [2020-10-16 02:32:44,309 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 210 selfloop transitions, 244 changer transitions 0/460 dead transitions. [2020-10-16 02:32:44,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 460 transitions, 7074 flow [2020-10-16 02:32:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:32:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:32:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:32:44,313 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:32:44,313 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:32:44,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:32:44,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:44,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:32:44,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:32:44,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:32:44,321 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:32:44,321 INFO L185 Difference]: Start difference. First operand has 118 places, 257 transitions, 4245 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:32:44,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 460 transitions, 7074 flow [2020-10-16 02:32:51,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 460 transitions, 6695 flow, removed 183 selfloop flow, removed 1 redundant places. [2020-10-16 02:32:51,847 INFO L241 Difference]: Finished difference. Result has 148 places, 290 transitions, 5180 flow [2020-10-16 02:32:51,848 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:32:51,848 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 114 predicate places. [2020-10-16 02:32:51,848 INFO L481 AbstractCegarLoop]: Abstraction has has 148 places, 290 transitions, 5180 flow [2020-10-16 02:32:51,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 02:32:51,848 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:32:51,848 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:32:52,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 02:32:52,049 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 02:32:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:32:52,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1033127428, now seen corresponding path program 2 times [2020-10-16 02:32:52,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:32:52,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358626960] [2020-10-16 02:32:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:32:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:32:52,119 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 02:32:52,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358626960] [2020-10-16 02:32:52,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:32:52,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:32:52,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021882472] [2020-10-16 02:32:52,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:32:52,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:32:52,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:32:52,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:32:52,122 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:32:52,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 290 transitions, 5180 flow. Second operand 9 states. [2020-10-16 02:32:52,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:32:52,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:32:52,123 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:32:55,890 INFO L129 PetriNetUnfolder]: 11378/18550 cut-off events. [2020-10-16 02:32:55,891 INFO L130 PetriNetUnfolder]: For 203823/203823 co-relation queries the response was YES. [2020-10-16 02:32:56,063 INFO L80 FinitePrefix]: Finished finitePrefix Result has 113393 conditions, 18550 events. 11378/18550 cut-off events. For 203823/203823 co-relation queries the response was YES. Maximal size of possible extension queue 3387. Compared 176191 event pairs, 837 based on Foata normal form. 17/16101 useless extension candidates. Maximal degree in co-relation 113342. Up to 3261 conditions per place. [2020-10-16 02:32:56,124 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 212 selfloop transitions, 253 changer transitions 0/471 dead transitions. [2020-10-16 02:32:56,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 471 transitions, 7554 flow [2020-10-16 02:32:56,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:32:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:32:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:32:56,127 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:32:56,127 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:32:56,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:32:56,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:32:56,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:32:56,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:32:56,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:32:56,137 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:32:56,137 INFO L185 Difference]: Start difference. First operand has 148 places, 290 transitions, 5180 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:32:56,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 471 transitions, 7554 flow [2020-10-16 02:33:06,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 471 transitions, 7069 flow, removed 32 selfloop flow, removed 20 redundant places. [2020-10-16 02:33:06,431 INFO L241 Difference]: Finished difference. Result has 159 places, 309 transitions, 5637 flow [2020-10-16 02:33:06,432 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:33:06,432 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 125 predicate places. [2020-10-16 02:33:06,432 INFO L481 AbstractCegarLoop]: Abstraction has has 159 places, 309 transitions, 5637 flow [2020-10-16 02:33:06,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:33:06,432 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:06,432 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:06,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-16 02:33:06,432 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 02:33:06,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:06,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940292, now seen corresponding path program 3 times [2020-10-16 02:33:06,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:06,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683134899] [2020-10-16 02:33:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:06,501 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 02:33:06,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683134899] [2020-10-16 02:33:06,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:06,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:33:06,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644638300] [2020-10-16 02:33:06,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:33:06,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:06,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:33:06,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:33:06,504 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:33:06,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 309 transitions, 5637 flow. Second operand 9 states. [2020-10-16 02:33:06,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:06,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:33:06,505 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:09,908 INFO L129 PetriNetUnfolder]: 11401/18613 cut-off events. [2020-10-16 02:33:09,908 INFO L130 PetriNetUnfolder]: For 222066/222066 co-relation queries the response was YES. [2020-10-16 02:33:10,085 INFO L80 FinitePrefix]: Finished finitePrefix Result has 117569 conditions, 18613 events. 11401/18613 cut-off events. For 222066/222066 co-relation queries the response was YES. Maximal size of possible extension queue 3411. Compared 177372 event pairs, 810 based on Foata normal form. 17/16151 useless extension candidates. Maximal degree in co-relation 117517. Up to 3271 conditions per place. [2020-10-16 02:33:10,146 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 218 selfloop transitions, 265 changer transitions 0/489 dead transitions. [2020-10-16 02:33:10,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 489 transitions, 8086 flow [2020-10-16 02:33:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:33:10,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:33:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:33:10,151 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:33:10,151 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:33:10,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:33:10,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:10,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:33:10,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:33:10,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:33:10,159 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:33:10,159 INFO L185 Difference]: Start difference. First operand has 159 places, 309 transitions, 5637 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:33:10,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 489 transitions, 8086 flow [2020-10-16 02:33:23,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 489 transitions, 7656 flow, removed 28 selfloop flow, removed 18 redundant places. [2020-10-16 02:33:23,755 INFO L241 Difference]: Finished difference. Result has 172 places, 334 transitions, 6293 flow [2020-10-16 02:33:23,755 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=5221, PETRI_DIFFERENCE_MINUEND_PLACES=141, 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=6293, PETRI_PLACES=172, PETRI_TRANSITIONS=334} [2020-10-16 02:33:23,756 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 138 predicate places. [2020-10-16 02:33:23,756 INFO L481 AbstractCegarLoop]: Abstraction has has 172 places, 334 transitions, 6293 flow [2020-10-16 02:33:23,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:33:23,756 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:23,756 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:23,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-16 02:33:23,756 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 02:33:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1204302852, now seen corresponding path program 4 times [2020-10-16 02:33:23,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:23,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246087918] [2020-10-16 02:33:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:23,819 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 02:33:23,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246087918] [2020-10-16 02:33:23,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:23,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:33:23,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973690975] [2020-10-16 02:33:23,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:33:23,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:23,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:33:23,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:33:23,822 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:33:23,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 334 transitions, 6293 flow. Second operand 9 states. [2020-10-16 02:33:23,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:23,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:33:23,823 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:27,421 INFO L129 PetriNetUnfolder]: 11424/18676 cut-off events. [2020-10-16 02:33:27,421 INFO L130 PetriNetUnfolder]: For 244413/244413 co-relation queries the response was YES. [2020-10-16 02:33:27,578 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121455 conditions, 18676 events. 11424/18676 cut-off events. For 244413/244413 co-relation queries the response was YES. Maximal size of possible extension queue 3435. Compared 178925 event pairs, 755 based on Foata normal form. 17/16201 useless extension candidates. Maximal degree in co-relation 121400. Up to 3281 conditions per place. [2020-10-16 02:33:27,634 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 241 selfloop transitions, 266 changer transitions 0/513 dead transitions. [2020-10-16 02:33:27,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 513 transitions, 8819 flow [2020-10-16 02:33:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:33:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:33:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:33:27,638 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:33:27,639 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:33:27,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:33:27,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:27,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:33:27,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:33:27,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:33:27,648 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:33:27,648 INFO L185 Difference]: Start difference. First operand has 172 places, 334 transitions, 6293 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:33:27,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 513 transitions, 8819 flow [2020-10-16 02:33:39,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 513 transitions, 8387 flow, removed 26 selfloop flow, removed 19 redundant places. [2020-10-16 02:33:39,579 INFO L241 Difference]: Finished difference. Result has 184 places, 353 transitions, 6857 flow [2020-10-16 02:33:39,579 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=5875, PETRI_DIFFERENCE_MINUEND_PLACES=153, 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=6857, PETRI_PLACES=184, PETRI_TRANSITIONS=353} [2020-10-16 02:33:39,580 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 150 predicate places. [2020-10-16 02:33:39,580 INFO L481 AbstractCegarLoop]: Abstraction has has 184 places, 353 transitions, 6857 flow [2020-10-16 02:33:39,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:33:39,580 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:39,580 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:39,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 02:33:39,581 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 02:33:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash -484255556, now seen corresponding path program 5 times [2020-10-16 02:33:39,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:39,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66666043] [2020-10-16 02:33:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:39,647 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 02:33:39,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66666043] [2020-10-16 02:33:39,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:39,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:33:39,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232353969] [2020-10-16 02:33:39,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:33:39,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:39,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:33:39,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:33:39,650 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:33:39,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 353 transitions, 6857 flow. Second operand 9 states. [2020-10-16 02:33:39,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:39,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:33:39,651 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:33:42,930 INFO L129 PetriNetUnfolder]: 11447/18739 cut-off events. [2020-10-16 02:33:42,931 INFO L130 PetriNetUnfolder]: For 263126/263126 co-relation queries the response was YES. [2020-10-16 02:33:43,153 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125470 conditions, 18739 events. 11447/18739 cut-off events. For 263126/263126 co-relation queries the response was YES. Maximal size of possible extension queue 3459. Compared 179374 event pairs, 728 based on Foata normal form. 17/16251 useless extension candidates. Maximal degree in co-relation 125412. Up to 3291 conditions per place. [2020-10-16 02:33:43,220 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 247 selfloop transitions, 274 changer transitions 0/527 dead transitions. [2020-10-16 02:33:43,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 527 transitions, 9320 flow [2020-10-16 02:33:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:33:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:33:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:33:43,223 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:33:43,223 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:33:43,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:33:43,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:33:43,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:33:43,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:33:43,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:33:43,229 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:33:43,229 INFO L185 Difference]: Start difference. First operand has 184 places, 353 transitions, 6857 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:33:43,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 527 transitions, 9320 flow [2020-10-16 02:33:57,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 527 transitions, 8875 flow, removed 35 selfloop flow, removed 19 redundant places. [2020-10-16 02:33:57,788 INFO L241 Difference]: Finished difference. Result has 196 places, 374 transitions, 7438 flow [2020-10-16 02:33:57,789 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, 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 02:33:57,789 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 162 predicate places. [2020-10-16 02:33:57,789 INFO L481 AbstractCegarLoop]: Abstraction has has 196 places, 374 transitions, 7438 flow [2020-10-16 02:33:57,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:33:57,789 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:33:57,790 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:33:57,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 02:33:57,790 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 02:33:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:33:57,790 INFO L82 PathProgramCache]: Analyzing trace with hash -479612996, now seen corresponding path program 6 times [2020-10-16 02:33:57,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:33:57,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864834809] [2020-10-16 02:33:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:33:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:33:57,839 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 02:33:57,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864834809] [2020-10-16 02:33:57,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:33:57,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 02:33:57,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762168453] [2020-10-16 02:33:57,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 02:33:57,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:33:57,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 02:33:57,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 02:33:57,842 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 02:33:57,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 374 transitions, 7438 flow. Second operand 9 states. [2020-10-16 02:33:57,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:33:57,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 02:33:57,843 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:02,877 INFO L129 PetriNetUnfolder]: 11470/18802 cut-off events. [2020-10-16 02:34:02,877 INFO L130 PetriNetUnfolder]: For 284018/284018 co-relation queries the response was YES. [2020-10-16 02:34:03,075 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129504 conditions, 18802 events. 11470/18802 cut-off events. For 284018/284018 co-relation queries the response was YES. Maximal size of possible extension queue 3483. Compared 179760 event pairs, 731 based on Foata normal form. 17/16307 useless extension candidates. Maximal degree in co-relation 129443. Up to 3301 conditions per place. [2020-10-16 02:34:03,134 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 249 selfloop transitions, 279 changer transitions 0/534 dead transitions. [2020-10-16 02:34:03,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 534 transitions, 9710 flow [2020-10-16 02:34:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:34:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:34:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 02:34:03,138 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 02:34:03,138 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 02:34:03,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 02:34:03,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:03,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 02:34:03,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:34:03,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:34:03,147 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:34:03,147 INFO L185 Difference]: Start difference. First operand has 196 places, 374 transitions, 7438 flow. Second operand 29 states and 3035 transitions. [2020-10-16 02:34:03,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 534 transitions, 9710 flow [2020-10-16 02:34:18,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 534 transitions, 9255 flow, removed 27 selfloop flow, removed 20 redundant places. [2020-10-16 02:34:18,480 INFO L241 Difference]: Finished difference. Result has 207 places, 387 transitions, 7869 flow [2020-10-16 02:34:18,480 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=6989, PETRI_DIFFERENCE_MINUEND_PLACES=176, 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=7869, PETRI_PLACES=207, PETRI_TRANSITIONS=387} [2020-10-16 02:34:18,480 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 173 predicate places. [2020-10-16 02:34:18,480 INFO L481 AbstractCegarLoop]: Abstraction has has 207 places, 387 transitions, 7869 flow [2020-10-16 02:34:18,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 02:34:18,480 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:18,481 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:18,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 02:34:18,481 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 02:34:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:18,481 INFO L82 PathProgramCache]: Analyzing trace with hash -612301355, now seen corresponding path program 1 times [2020-10-16 02:34:18,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:18,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216561244] [2020-10-16 02:34:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:34:18,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:34:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 02:34:18,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 02:34:18,502 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 02:34:18,503 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 02:34:18,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 02:34:18,503 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 02:34:18,504 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 02:34:18,504 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 02:34:18,516 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,517 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,517 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,517 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,518 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,518 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,518 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,518 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,518 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,518 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,519 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,519 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,519 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,519 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,519 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,519 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,519 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,520 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,520 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,520 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,521 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,521 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,521 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,528 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,528 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,529 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,529 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,529 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,530 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,530 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,537 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,537 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,537 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,538 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,544 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,545 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,545 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,545 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,545 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,549 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,550 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,550 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,550 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,552 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,552 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,554 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,554 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,555 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,555 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,555 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,555 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,555 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,556 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,556 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,557 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,557 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,558 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,558 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,558 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,559 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,559 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,560 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 02:34:18,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 02:34:18,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 02:34:18,562 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 02:34:18,562 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 02:34:18,562 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 02:34:18,562 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 02:34:18,562 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 02:34:18,562 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 02:34:18,562 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 02:34:18,564 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 02:34:18,574 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 02:34:18,575 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 02:34:18,575 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-10-16 02:34:18,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 02:34:18,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 81 transitions, 210 flow [2020-10-16 02:34:18,577 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 02:34:18,577 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 210 flow [2020-10-16 02:34:18,577 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 81 transitions, 210 flow [2020-10-16 02:34:18,577 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 210 flow [2020-10-16 02:34:18,587 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 02:34:18,587 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 02:34:18,588 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 153. Up to 12 conditions per place. [2020-10-16 02:34:18,592 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-16 02:34:19,687 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-16 02:34:19,947 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 02:34:20,088 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 02:34:20,099 INFO L132 LiptonReduction]: Checked pairs total: 3488 [2020-10-16 02:34:20,099 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 02:34:20,100 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1523 [2020-10-16 02:34:20,101 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 02:34:20,101 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 02:34:20,101 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:20,101 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 02:34:20,101 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 02:34:20,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:20,101 INFO L82 PathProgramCache]: Analyzing trace with hash 921412, now seen corresponding path program 1 times [2020-10-16 02:34:20,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:20,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916727081] [2020-10-16 02:34:20,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:20,119 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 02:34:20,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916727081] [2020-10-16 02:34:20,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:34:20,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 02:34:20,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028007669] [2020-10-16 02:34:20,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 02:34:20,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:20,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 02:34:20,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 02:34:20,122 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 185 [2020-10-16 02:34:20,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states. [2020-10-16 02:34:20,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:20,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 185 [2020-10-16 02:34:20,123 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:20,755 INFO L129 PetriNetUnfolder]: 9406/12179 cut-off events. [2020-10-16 02:34:20,755 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 02:34:20,784 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24375 conditions, 12179 events. 9406/12179 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 66749 event pairs, 1879 based on Foata normal form. 0/10226 useless extension candidates. Maximal degree in co-relation 24362. Up to 11075 conditions per place. [2020-10-16 02:34:20,817 INFO L132 encePairwiseOnDemand]: 178/185 looper letters, 22 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2020-10-16 02:34:20,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 180 flow [2020-10-16 02:34:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 02:34:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 02:34:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2020-10-16 02:34:20,819 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6738738738738739 [2020-10-16 02:34:20,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2020-10-16 02:34:20,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2020-10-16 02:34:20,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:20,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2020-10-16 02:34:20,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 02:34:20,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 02:34:20,820 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 02:34:20,820 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states and 374 transitions. [2020-10-16 02:34:20,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 180 flow [2020-10-16 02:34:20,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 159 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 02:34:20,821 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 117 flow [2020-10-16 02:34:20,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 02:34:20,821 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2020-10-16 02:34:20,821 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 117 flow [2020-10-16 02:34:20,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 02:34:20,822 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:20,822 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:20,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 02:34:20,822 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 02:34:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:20,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1176697087, now seen corresponding path program 1 times [2020-10-16 02:34:20,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:20,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290389620] [2020-10-16 02:34:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:20,853 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 02:34:20,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290389620] [2020-10-16 02:34:20,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:34:20,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:34:20,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144248924] [2020-10-16 02:34:20,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:34:20,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:20,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:34:20,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:34:20,856 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 02:34:20,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 117 flow. Second operand 5 states. [2020-10-16 02:34:20,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:20,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 02:34:20,857 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:22,010 INFO L129 PetriNetUnfolder]: 15176/20092 cut-off events. [2020-10-16 02:34:22,011 INFO L130 PetriNetUnfolder]: For 1041/1041 co-relation queries the response was YES. [2020-10-16 02:34:22,082 INFO L80 FinitePrefix]: Finished finitePrefix Result has 49217 conditions, 20092 events. 15176/20092 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 1755. Compared 126905 event pairs, 2315 based on Foata normal form. 323/18514 useless extension candidates. Maximal degree in co-relation 49202. Up to 9537 conditions per place. [2020-10-16 02:34:22,144 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 48 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2020-10-16 02:34:22,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 73 transitions, 363 flow [2020-10-16 02:34:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:34:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:34:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 737 transitions. [2020-10-16 02:34:22,146 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.663963963963964 [2020-10-16 02:34:22,146 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 737 transitions. [2020-10-16 02:34:22,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 737 transitions. [2020-10-16 02:34:22,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:22,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 737 transitions. [2020-10-16 02:34:22,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:34:22,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:34:22,148 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:34:22,149 INFO L185 Difference]: Start difference. First operand has 41 places, 30 transitions, 117 flow. Second operand 6 states and 737 transitions. [2020-10-16 02:34:22,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 73 transitions, 363 flow [2020-10-16 02:34:22,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 73 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 02:34:22,152 INFO L241 Difference]: Finished difference. Result has 48 places, 40 transitions, 216 flow [2020-10-16 02:34:22,152 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 02:34:22,152 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2020-10-16 02:34:22,152 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 216 flow [2020-10-16 02:34:22,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:34:22,152 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:22,153 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:22,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 02:34:22,153 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 02:34:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:22,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1772932976, now seen corresponding path program 1 times [2020-10-16 02:34:22,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:22,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418224258] [2020-10-16 02:34:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:22,188 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 02:34:22,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418224258] [2020-10-16 02:34:22,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:34:22,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:34:22,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51428924] [2020-10-16 02:34:22,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:34:22,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:22,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:34:22,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:34:22,190 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2020-10-16 02:34:22,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 216 flow. Second operand 5 states. [2020-10-16 02:34:22,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:22,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2020-10-16 02:34:22,191 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:24,401 INFO L129 PetriNetUnfolder]: 24103/32563 cut-off events. [2020-10-16 02:34:24,401 INFO L130 PetriNetUnfolder]: For 14291/14291 co-relation queries the response was YES. [2020-10-16 02:34:24,516 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97846 conditions, 32563 events. 24103/32563 cut-off events. For 14291/14291 co-relation queries the response was YES. Maximal size of possible extension queue 3152. Compared 228520 event pairs, 3971 based on Foata normal form. 497/29900 useless extension candidates. Maximal degree in co-relation 97827. Up to 16050 conditions per place. [2020-10-16 02:34:24,615 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 58 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2020-10-16 02:34:24,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 92 transitions, 609 flow [2020-10-16 02:34:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:34:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:34:24,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 744 transitions. [2020-10-16 02:34:24,617 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6702702702702703 [2020-10-16 02:34:24,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 744 transitions. [2020-10-16 02:34:24,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 744 transitions. [2020-10-16 02:34:24,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:24,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 744 transitions. [2020-10-16 02:34:24,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:34:24,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:34:24,619 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:34:24,619 INFO L185 Difference]: Start difference. First operand has 48 places, 40 transitions, 216 flow. Second operand 6 states and 744 transitions. [2020-10-16 02:34:24,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 92 transitions, 609 flow [2020-10-16 02:34:24,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 568 flow, removed 8 selfloop flow, removed 2 redundant places. [2020-10-16 02:34:24,725 INFO L241 Difference]: Finished difference. Result has 54 places, 55 transitions, 378 flow [2020-10-16 02:34:24,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 02:34:24,726 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2020-10-16 02:34:24,726 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 378 flow [2020-10-16 02:34:24,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:34:24,727 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:24,727 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:24,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 02:34:24,728 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 02:34:24,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:24,728 INFO L82 PathProgramCache]: Analyzing trace with hash 323960811, now seen corresponding path program 1 times [2020-10-16 02:34:24,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:24,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551384656] [2020-10-16 02:34:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:24,788 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 02:34:24,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551384656] [2020-10-16 02:34:24,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070033914] [2020-10-16 02:34:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 02:34:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:24,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:34:24,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:34:24,956 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 02:34:24,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:34:24,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:34:24,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990275284] [2020-10-16 02:34:24,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:34:24,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:34:24,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:34:24,960 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 02:34:24,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 378 flow. Second operand 12 states. [2020-10-16 02:34:24,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:24,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 02:34:24,962 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:27,938 INFO L129 PetriNetUnfolder]: 25758/34987 cut-off events. [2020-10-16 02:34:27,938 INFO L130 PetriNetUnfolder]: For 32543/32543 co-relation queries the response was YES. [2020-10-16 02:34:28,103 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121474 conditions, 34987 events. 25758/34987 cut-off events. For 32543/32543 co-relation queries the response was YES. Maximal size of possible extension queue 3461. Compared 251257 event pairs, 3572 based on Foata normal form. 107/31691 useless extension candidates. Maximal degree in co-relation 121452. Up to 12942 conditions per place. [2020-10-16 02:34:28,229 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 101 selfloop transitions, 47 changer transitions 0/156 dead transitions. [2020-10-16 02:34:28,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 156 transitions, 1066 flow [2020-10-16 02:34:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:34:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:34:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2020-10-16 02:34:28,232 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6544698544698545 [2020-10-16 02:34:28,232 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2020-10-16 02:34:28,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2020-10-16 02:34:28,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:28,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2020-10-16 02:34:28,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:34:28,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:34:28,235 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:34:28,235 INFO L185 Difference]: Start difference. First operand has 54 places, 55 transitions, 378 flow. Second operand 13 states and 1574 transitions. [2020-10-16 02:34:28,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 156 transitions, 1066 flow [2020-10-16 02:34:29,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 156 transitions, 1030 flow, removed 14 selfloop flow, removed 1 redundant places. [2020-10-16 02:34:29,213 INFO L241 Difference]: Finished difference. Result has 68 places, 71 transitions, 604 flow [2020-10-16 02:34:29,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 02:34:29,213 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2020-10-16 02:34:29,214 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 604 flow [2020-10-16 02:34:29,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:34:29,214 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:29,214 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:29,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:34:29,420 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 02:34:29,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:29,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1313409279, now seen corresponding path program 2 times [2020-10-16 02:34:29,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:29,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826349836] [2020-10-16 02:34:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:29,460 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 02:34:29,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826349836] [2020-10-16 02:34:29,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:34:29,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:34:29,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036776927] [2020-10-16 02:34:29,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:34:29,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:34:29,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:34:29,463 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 02:34:29,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 604 flow. Second operand 7 states. [2020-10-16 02:34:29,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:29,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 02:34:29,464 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:32,412 INFO L129 PetriNetUnfolder]: 27412/37431 cut-off events. [2020-10-16 02:34:32,412 INFO L130 PetriNetUnfolder]: For 60133/60133 co-relation queries the response was YES. [2020-10-16 02:34:32,615 INFO L80 FinitePrefix]: Finished finitePrefix Result has 145813 conditions, 37431 events. 27412/37431 cut-off events. For 60133/60133 co-relation queries the response was YES. Maximal size of possible extension queue 3770. Compared 274003 event pairs, 3717 based on Foata normal form. 107/33822 useless extension candidates. Maximal degree in co-relation 145787. Up to 11975 conditions per place. [2020-10-16 02:34:32,753 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 105 selfloop transitions, 54 changer transitions 0/167 dead transitions. [2020-10-16 02:34:32,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 167 transitions, 1319 flow [2020-10-16 02:34:32,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:34:32,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:34:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2020-10-16 02:34:32,756 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6544698544698545 [2020-10-16 02:34:32,756 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2020-10-16 02:34:32,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2020-10-16 02:34:32,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:32,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2020-10-16 02:34:32,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:34:32,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:34:32,760 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:34:32,761 INFO L185 Difference]: Start difference. First operand has 68 places, 71 transitions, 604 flow. Second operand 13 states and 1574 transitions. [2020-10-16 02:34:32,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 167 transitions, 1319 flow [2020-10-16 02:34:36,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 167 transitions, 1214 flow, removed 10 selfloop flow, removed 7 redundant places. [2020-10-16 02:34:36,119 INFO L241 Difference]: Finished difference. Result has 76 places, 83 transitions, 759 flow [2020-10-16 02:34:36,120 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 02:34:36,120 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2020-10-16 02:34:36,120 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 759 flow [2020-10-16 02:34:36,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:34:36,120 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:36,120 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:36,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 02:34:36,120 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 02:34:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:36,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1064498480, now seen corresponding path program 1 times [2020-10-16 02:34:36,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:36,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117883903] [2020-10-16 02:34:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:36,149 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 02:34:36,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117883903] [2020-10-16 02:34:36,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:34:36,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:34:36,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250354056] [2020-10-16 02:34:36,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:34:36,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:36,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:34:36,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:34:36,151 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 02:34:36,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 759 flow. Second operand 5 states. [2020-10-16 02:34:36,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:36,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 02:34:36,151 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:41,068 INFO L129 PetriNetUnfolder]: 42399/59055 cut-off events. [2020-10-16 02:34:41,068 INFO L130 PetriNetUnfolder]: For 161057/161063 co-relation queries the response was YES. [2020-10-16 02:34:41,399 INFO L80 FinitePrefix]: Finished finitePrefix Result has 255881 conditions, 59055 events. 42399/59055 cut-off events. For 161057/161063 co-relation queries the response was YES. Maximal size of possible extension queue 6543. Compared 473185 event pairs, 6895 based on Foata normal form. 856/53802 useless extension candidates. Maximal degree in co-relation 255853. Up to 30189 conditions per place. [2020-10-16 02:34:41,618 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 121 selfloop transitions, 49 changer transitions 0/179 dead transitions. [2020-10-16 02:34:41,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 179 transitions, 1941 flow [2020-10-16 02:34:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:34:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:34:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2020-10-16 02:34:41,620 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2020-10-16 02:34:41,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2020-10-16 02:34:41,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2020-10-16 02:34:41,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:41,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2020-10-16 02:34:41,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:34:41,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:34:41,621 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:34:41,621 INFO L185 Difference]: Start difference. First operand has 76 places, 83 transitions, 759 flow. Second operand 6 states and 738 transitions. [2020-10-16 02:34:41,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 179 transitions, 1941 flow [2020-10-16 02:34:49,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 179 transitions, 1718 flow, removed 22 selfloop flow, removed 9 redundant places. [2020-10-16 02:34:49,175 INFO L241 Difference]: Finished difference. Result has 75 places, 115 transitions, 1155 flow [2020-10-16 02:34:49,175 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 02:34:49,175 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2020-10-16 02:34:49,175 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 115 transitions, 1155 flow [2020-10-16 02:34:49,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:34:49,175 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:34:49,176 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:34:49,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 02:34:49,176 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 02:34:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:34:49,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1896427507, now seen corresponding path program 1 times [2020-10-16 02:34:49,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:34:49,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016465756] [2020-10-16 02:34:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:34:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:49,234 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 02:34:49,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016465756] [2020-10-16 02:34:49,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483247081] [2020-10-16 02:34:49,235 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 02:34:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:34:49,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:34:49,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:34:49,409 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 02:34:49,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:34:49,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:34:49,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424539980] [2020-10-16 02:34:49,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:34:49,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:34:49,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:34:49,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:34:49,414 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2020-10-16 02:34:49,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 115 transitions, 1155 flow. Second operand 12 states. [2020-10-16 02:34:49,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:34:49,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2020-10-16 02:34:49,415 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:34:55,347 INFO L129 PetriNetUnfolder]: 45547/63826 cut-off events. [2020-10-16 02:34:55,347 INFO L130 PetriNetUnfolder]: For 212873/212879 co-relation queries the response was YES. [2020-10-16 02:34:55,773 INFO L80 FinitePrefix]: Finished finitePrefix Result has 294881 conditions, 63826 events. 45547/63826 cut-off events. For 212873/212879 co-relation queries the response was YES. Maximal size of possible extension queue 7232. Compared 522165 event pairs, 6275 based on Foata normal form. 233/57404 useless extension candidates. Maximal degree in co-relation 294850. Up to 20346 conditions per place. [2020-10-16 02:34:56,030 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 142 selfloop transitions, 97 changer transitions 0/247 dead transitions. [2020-10-16 02:34:56,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 247 transitions, 2533 flow [2020-10-16 02:34:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:34:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:34:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1563 transitions. [2020-10-16 02:34:56,031 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6498960498960499 [2020-10-16 02:34:56,032 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1563 transitions. [2020-10-16 02:34:56,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1563 transitions. [2020-10-16 02:34:56,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:34:56,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1563 transitions. [2020-10-16 02:34:56,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:34:56,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:34:56,035 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:34:56,035 INFO L185 Difference]: Start difference. First operand has 75 places, 115 transitions, 1155 flow. Second operand 13 states and 1563 transitions. [2020-10-16 02:34:56,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 247 transitions, 2533 flow [2020-10-16 02:35:15,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 247 transitions, 2444 flow, removed 38 selfloop flow, removed 1 redundant places. [2020-10-16 02:35:15,587 INFO L241 Difference]: Finished difference. Result has 89 places, 146 transitions, 1704 flow [2020-10-16 02:35:15,588 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 02:35:15,588 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2020-10-16 02:35:15,588 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 146 transitions, 1704 flow [2020-10-16 02:35:15,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:35:15,588 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:35:15,588 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:35:15,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 02:35:15,789 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 02:35:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:35:15,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1954579539, now seen corresponding path program 1 times [2020-10-16 02:35:15,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:35:15,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688453430] [2020-10-16 02:35:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:35:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:35:15,833 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 02:35:15,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688453430] [2020-10-16 02:35:15,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637091065] [2020-10-16 02:35:15,833 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 02:35:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:35:15,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 02:35:15,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:35:15,976 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 02:35:15,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:35:15,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 02:35:15,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21615763] [2020-10-16 02:35:15,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 02:35:15,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:35:15,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 02:35:15,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 02:35:15,980 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 02:35:15,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 146 transitions, 1704 flow. Second operand 12 states. [2020-10-16 02:35:15,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:35:15,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 02:35:15,981 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:35:26,664 INFO L129 PetriNetUnfolder]: 48388/68199 cut-off events. [2020-10-16 02:35:26,665 INFO L130 PetriNetUnfolder]: For 314101/314101 co-relation queries the response was YES. [2020-10-16 02:35:27,067 INFO L80 FinitePrefix]: Finished finitePrefix Result has 338405 conditions, 68199 events. 48388/68199 cut-off events. For 314101/314101 co-relation queries the response was YES. Maximal size of possible extension queue 7871. Compared 568376 event pairs, 6048 based on Foata normal form. 227/61266 useless extension candidates. Maximal degree in co-relation 338370. Up to 18936 conditions per place. [2020-10-16 02:35:27,312 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 168 selfloop transitions, 110 changer transitions 0/286 dead transitions. [2020-10-16 02:35:27,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 286 transitions, 3342 flow [2020-10-16 02:35:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:35:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:35:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1577 transitions. [2020-10-16 02:35:27,314 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6557172557172557 [2020-10-16 02:35:27,314 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1577 transitions. [2020-10-16 02:35:27,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1577 transitions. [2020-10-16 02:35:27,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:35:27,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1577 transitions. [2020-10-16 02:35:27,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:35:27,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:35:27,318 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:35:27,318 INFO L185 Difference]: Start difference. First operand has 89 places, 146 transitions, 1704 flow. Second operand 13 states and 1577 transitions. [2020-10-16 02:35:27,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 286 transitions, 3342 flow [2020-10-16 02:35:59,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 286 transitions, 3227 flow, removed 36 selfloop flow, removed 3 redundant places. [2020-10-16 02:35:59,627 INFO L241 Difference]: Finished difference. Result has 101 places, 181 transitions, 2342 flow [2020-10-16 02:35:59,628 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 02:35:59,628 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2020-10-16 02:35:59,628 INFO L481 AbstractCegarLoop]: Abstraction has has 101 places, 181 transitions, 2342 flow [2020-10-16 02:35:59,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 02:35:59,628 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:35:59,628 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:35:59,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 02:35:59,835 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 02:35:59,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:35:59,835 INFO L82 PathProgramCache]: Analyzing trace with hash 780837277, now seen corresponding path program 2 times [2020-10-16 02:35:59,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:35:59,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086782008] [2020-10-16 02:35:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:35:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:35:59,884 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 02:35:59,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086782008] [2020-10-16 02:35:59,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:35:59,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:35:59,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637674340] [2020-10-16 02:35:59,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:35:59,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:35:59,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:35:59,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:35:59,886 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 02:35:59,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 181 transitions, 2342 flow. Second operand 7 states. [2020-10-16 02:35:59,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:35:59,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 02:35:59,887 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:36:07,893 INFO L129 PetriNetUnfolder]: 50681/71686 cut-off events. [2020-10-16 02:36:07,893 INFO L130 PetriNetUnfolder]: For 413774/413774 co-relation queries the response was YES. [2020-10-16 02:36:08,377 INFO L80 FinitePrefix]: Finished finitePrefix Result has 383881 conditions, 71686 events. 50681/71686 cut-off events. For 413774/413774 co-relation queries the response was YES. Maximal size of possible extension queue 8401. Compared 605472 event pairs, 6363 based on Foata normal form. 175/64277 useless extension candidates. Maximal degree in co-relation 383843. Up to 19386 conditions per place. [2020-10-16 02:36:08,648 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 177 selfloop transitions, 124 changer transitions 0/309 dead transitions. [2020-10-16 02:36:08,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 309 transitions, 3914 flow [2020-10-16 02:36:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:36:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:36:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1577 transitions. [2020-10-16 02:36:08,650 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6557172557172557 [2020-10-16 02:36:08,650 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1577 transitions. [2020-10-16 02:36:08,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1577 transitions. [2020-10-16 02:36:08,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:36:08,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1577 transitions. [2020-10-16 02:36:08,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:36:08,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:36:08,653 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:36:08,653 INFO L185 Difference]: Start difference. First operand has 101 places, 181 transitions, 2342 flow. Second operand 13 states and 1577 transitions. [2020-10-16 02:36:08,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 309 transitions, 3914 flow [2020-10-16 02:37:03,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 309 transitions, 3850 flow, removed 29 selfloop flow, removed 1 redundant places. [2020-10-16 02:37:03,112 INFO L241 Difference]: Finished difference. Result has 115 places, 204 transitions, 2919 flow [2020-10-16 02:37:03,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, 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 02:37:03,112 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2020-10-16 02:37:03,112 INFO L481 AbstractCegarLoop]: Abstraction has has 115 places, 204 transitions, 2919 flow [2020-10-16 02:37:03,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:37:03,112 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:37:03,113 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:37:03,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 02:37:03,113 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 02:37:03,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:37:03,113 INFO L82 PathProgramCache]: Analyzing trace with hash 780840129, now seen corresponding path program 2 times [2020-10-16 02:37:03,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:37:03,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351953037] [2020-10-16 02:37:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:37:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:37:03,163 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 02:37:03,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351953037] [2020-10-16 02:37:03,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:37:03,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 02:37:03,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271586193] [2020-10-16 02:37:03,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 02:37:03,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:37:03,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 02:37:03,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 02:37:03,166 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2020-10-16 02:37:03,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 204 transitions, 2919 flow. Second operand 7 states. [2020-10-16 02:37:03,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:37:03,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2020-10-16 02:37:03,167 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:37:11,017 INFO L129 PetriNetUnfolder]: 53510/76037 cut-off events. [2020-10-16 02:37:11,018 INFO L130 PetriNetUnfolder]: For 545023/545029 co-relation queries the response was YES. [2020-10-16 02:37:11,682 INFO L80 FinitePrefix]: Finished finitePrefix Result has 435060 conditions, 76037 events. 53510/76037 cut-off events. For 545023/545029 co-relation queries the response was YES. Maximal size of possible extension queue 9094. Compared 651679 event pairs, 6771 based on Foata normal form. 233/68117 useless extension candidates. Maximal degree in co-relation 435018. Up to 20686 conditions per place. [2020-10-16 02:37:13,268 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 183 selfloop transitions, 140 changer transitions 0/331 dead transitions. [2020-10-16 02:37:13,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 331 transitions, 4669 flow [2020-10-16 02:37:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 02:37:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 02:37:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1563 transitions. [2020-10-16 02:37:13,269 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6498960498960499 [2020-10-16 02:37:13,270 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1563 transitions. [2020-10-16 02:37:13,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1563 transitions. [2020-10-16 02:37:13,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:37:13,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1563 transitions. [2020-10-16 02:37:13,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 02:37:13,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 02:37:13,274 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 02:37:13,274 INFO L185 Difference]: Start difference. First operand has 115 places, 204 transitions, 2919 flow. Second operand 13 states and 1563 transitions. [2020-10-16 02:37:13,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 331 transitions, 4669 flow [2020-10-16 02:38:16,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 331 transitions, 4363 flow, removed 41 selfloop flow, removed 8 redundant places. [2020-10-16 02:38:16,632 INFO L241 Difference]: Finished difference. Result has 122 places, 233 transitions, 3462 flow [2020-10-16 02:38:16,632 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=107, 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=3462, PETRI_PLACES=122, PETRI_TRANSITIONS=233} [2020-10-16 02:38:16,633 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2020-10-16 02:38:16,633 INFO L481 AbstractCegarLoop]: Abstraction has has 122 places, 233 transitions, 3462 flow [2020-10-16 02:38:16,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 02:38:16,633 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:38:16,633 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:38:16,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 02:38:16,633 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 02:38:16,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:38:16,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1561506739, now seen corresponding path program 1 times [2020-10-16 02:38:16,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:38:16,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518566245] [2020-10-16 02:38:16,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:38:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:38:16,675 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 02:38:16,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518566245] [2020-10-16 02:38:16,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 02:38:16,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 02:38:16,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214054477] [2020-10-16 02:38:16,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 02:38:16,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:38:16,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 02:38:16,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 02:38:16,678 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 02:38:16,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 233 transitions, 3462 flow. Second operand 5 states. [2020-10-16 02:38:16,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:38:16,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 02:38:16,678 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:38:30,534 INFO L129 PetriNetUnfolder]: 80365/116510 cut-off events. [2020-10-16 02:38:30,535 INFO L130 PetriNetUnfolder]: For 1107269/1107308 co-relation queries the response was YES. [2020-10-16 02:38:39,880 INFO L80 FinitePrefix]: Finished finitePrefix Result has 706460 conditions, 116510 events. 80365/116510 cut-off events. For 1107269/1107308 co-relation queries the response was YES. Maximal size of possible extension queue 14934. Compared 1084593 event pairs, 12119 based on Foata normal form. 1656/105260 useless extension candidates. Maximal degree in co-relation 706415. Up to 62044 conditions per place. [2020-10-16 02:38:40,321 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 370 selfloop transitions, 106 changer transitions 0/485 dead transitions. [2020-10-16 02:38:40,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 485 transitions, 8217 flow [2020-10-16 02:38:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 02:38:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 02:38:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2020-10-16 02:38:40,322 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2020-10-16 02:38:40,322 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2020-10-16 02:38:40,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2020-10-16 02:38:40,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:38:40,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2020-10-16 02:38:40,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 02:38:40,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 02:38:40,323 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 02:38:40,324 INFO L185 Difference]: Start difference. First operand has 122 places, 233 transitions, 3462 flow. Second operand 6 states and 738 transitions. [2020-10-16 02:38:40,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 485 transitions, 8217 flow [2020-10-16 02:41:57,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 485 transitions, 7867 flow, removed 60 selfloop flow, removed 7 redundant places. [2020-10-16 02:41:57,315 INFO L241 Difference]: Finished difference. Result has 123 places, 310 transitions, 5004 flow [2020-10-16 02:41:57,315 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=115, 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=5004, PETRI_PLACES=123, PETRI_TRANSITIONS=310} [2020-10-16 02:41:57,315 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2020-10-16 02:41:57,316 INFO L481 AbstractCegarLoop]: Abstraction has has 123 places, 310 transitions, 5004 flow [2020-10-16 02:41:57,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 02:41:57,316 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 02:41:57,316 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 02:41:57,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 02:41:57,316 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 02:41:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 02:41:57,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1022812594, now seen corresponding path program 1 times [2020-10-16 02:41:57,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 02:41:57,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854562223] [2020-10-16 02:41:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 02:41:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:41:57,384 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 02:41:57,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854562223] [2020-10-16 02:41:57,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610635527] [2020-10-16 02:41:57,385 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 02:41:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 02:41:57,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 02:41:57,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 02:41:57,572 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 02:41:57,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 02:41:57,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 02:41:57,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001427005] [2020-10-16 02:41:57,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 02:41:57,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 02:41:57,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 02:41:57,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 02:41:57,575 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2020-10-16 02:41:57,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 310 transitions, 5004 flow. Second operand 16 states. [2020-10-16 02:41:57,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 02:41:57,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2020-10-16 02:41:57,576 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 02:42:15,345 INFO L129 PetriNetUnfolder]: 80442/116626 cut-off events. [2020-10-16 02:42:15,345 INFO L130 PetriNetUnfolder]: For 1194118/1194118 co-relation queries the response was YES. [2020-10-16 02:42:16,288 INFO L80 FinitePrefix]: Finished finitePrefix Result has 745109 conditions, 116626 events. 80442/116626 cut-off events. For 1194118/1194118 co-relation queries the response was YES. Maximal size of possible extension queue 15075. Compared 1099618 event pairs, 9598 based on Foata normal form. 57/103793 useless extension candidates. Maximal degree in co-relation 745061. Up to 31549 conditions per place. [2020-10-16 02:42:16,753 INFO L132 encePairwiseOnDemand]: 175/185 looper letters, 272 selfloop transitions, 297 changer transitions 0/576 dead transitions. [2020-10-16 02:42:16,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 576 transitions, 8806 flow [2020-10-16 02:42:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 02:42:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 02:42:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3418 transitions. [2020-10-16 02:42:16,758 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6370922646784716 [2020-10-16 02:42:16,758 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3418 transitions. [2020-10-16 02:42:16,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3418 transitions. [2020-10-16 02:42:16,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 02:42:16,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3418 transitions. [2020-10-16 02:42:16,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 02:42:16,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 02:42:16,766 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 02:42:16,766 INFO L185 Difference]: Start difference. First operand has 123 places, 310 transitions, 5004 flow. Second operand 29 states and 3418 transitions. [2020-10-16 02:42:16,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 576 transitions, 8806 flow Received shutdown request... [2020-10-16 02:45:47,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 02:45:47,971 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 02:45:47,975 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 02:45:47,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:45:47 BasicIcfg [2020-10-16 02:45:47,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 02:45:47,977 INFO L168 Benchmark]: Toolchain (without parser) took 828753.82 ms. Allocated memory was 252.7 MB in the beginning and 6.5 GB in the end (delta: 6.3 GB). Free memory was 205.3 MB in the beginning and 4.9 GB in the end (delta: -4.7 GB). Peak memory consumption was 6.9 GB. Max. memory is 14.2 GB. [2020-10-16 02:45:47,977 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:45:47,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.72 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 205.3 MB in the beginning and 273.2 MB in the end (delta: -67.9 MB). Peak memory consumption was 30.2 MB. Max. memory is 14.2 GB. [2020-10-16 02:45:47,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.56 ms. Allocated memory is still 317.7 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 02:45:47,978 INFO L168 Benchmark]: Boogie Preprocessor took 34.35 ms. Allocated memory is still 317.7 MB. Free memory was 273.2 MB in the beginning and 270.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 02:45:47,978 INFO L168 Benchmark]: RCFGBuilder took 370.33 ms. Allocated memory is still 317.7 MB. Free memory was 270.7 MB in the beginning and 248.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 02:45:47,979 INFO L168 Benchmark]: TraceAbstraction took 827640.90 ms. Allocated memory was 317.7 MB in the beginning and 6.5 GB in the end (delta: 6.2 GB). Free memory was 248.8 MB in the beginning and 4.9 GB in the end (delta: -4.7 GB). Peak memory consumption was 6.9 GB. Max. memory is 14.2 GB. [2020-10-16 02:45:47,981 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 655.72 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 205.3 MB in the beginning and 273.2 MB in the end (delta: -67.9 MB). Peak memory consumption was 30.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.56 ms. Allocated memory is still 317.7 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 34.35 ms. Allocated memory is still 317.7 MB. Free memory was 273.2 MB in the beginning and 270.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 370.33 ms. Allocated memory is still 317.7 MB. Free memory was 270.7 MB in the beginning and 248.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 827640.90 ms. Allocated memory was 317.7 MB in the beginning and 6.5 GB in the end (delta: 6.2 GB). Free memory was 248.8 MB in the beginning and 4.9 GB in the end (delta: -4.7 GB). Peak memory consumption was 6.9 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 363 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 60 PlacesBefore, 17 PlacesAfterwards, 57 TransitionsBefore, 11 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 568 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 68 PlacesBefore, 24 PlacesAfterwards, 63 TransitionsBefore, 16 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 57 TotalNumberOfCompositions, 1184 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 808 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 76 PlacesBefore, 29 PlacesAfterwards, 69 TransitionsBefore, 19 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 57 TotalNumberOfCompositions, 1815 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 987 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 84 PlacesBefore, 34 PlacesAfterwards, 75 TransitionsBefore, 22 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 64 TotalNumberOfCompositions, 2872 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1265 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 83 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 92 PlacesBefore, 39 PlacesAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 3488 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 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: 827.3s, OverallIterations: 44, TraceHistogramMax: 5, AutomataDifference: 813.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 447 SDtfs, 3456 SDslu, 587 SDs, 0 SdLazy, 6746 SolverSat, 455 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 513 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7869occurred in iteration=17, 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, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 771 NumberOfCodeBlocks, 771 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 663 ConstructedInterpolants, 0 QuantifiedInterpolants, 62523 SizeOfPredicates, 40 NumberOfNonLiveVariables, 910 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 49 InterpolantComputations, 31 PerfectInterpolantSequences, 224/254 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