/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 03:22:48,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 03:22:48,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 03:22:48,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 03:22:48,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 03:22:48,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 03:22:48,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 03:22:48,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 03:22:48,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 03:22:48,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 03:22:48,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 03:22:48,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 03:22:48,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 03:22:48,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 03:22:48,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 03:22:48,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 03:22:48,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 03:22:48,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 03:22:48,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 03:22:48,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 03:22:48,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 03:22:48,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 03:22:48,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 03:22:48,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 03:22:48,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 03:22:48,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 03:22:48,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 03:22:48,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 03:22:48,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 03:22:48,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 03:22:48,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 03:22:48,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 03:22:48,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 03:22:48,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 03:22:48,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 03:22:48,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 03:22:48,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 03:22:48,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 03:22:48,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 03:22:48,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 03:22:48,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 03:22:48,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 03:22:48,629 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 03:22:48,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 03:22:48,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 03:22:48,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 03:22:48,632 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 03:22:48,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 03:22:48,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 03:22:48,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 03:22:48,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 03:22:48,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 03:22:48,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 03:22:48,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 03:22:48,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 03:22:48,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 03:22:48,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 03:22:48,635 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 03:22:48,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 03:22:48,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 03:22:48,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 03:22:48,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 03:22:48,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 03:22:48,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:22:48,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 03:22:48,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 03:22:48,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 03:22:48,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 03:22:48,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 03:22:48,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 03:22:48,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 03:22:48,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 03:22:49,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 03:22:49,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 03:22:49,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 03:22:49,018 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 03:22:49,018 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2020-10-16 03:22:49,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d1901287/522534ab5df24881966c39a88a7eadbc/FLAG566a4182f [2020-10-16 03:22:49,657 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 03:22:49,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2020-10-16 03:22:49,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d1901287/522534ab5df24881966c39a88a7eadbc/FLAG566a4182f [2020-10-16 03:22:49,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d1901287/522534ab5df24881966c39a88a7eadbc [2020-10-16 03:22:49,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 03:22:49,916 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 03:22:49,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 03:22:49,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 03:22:49,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 03:22:49,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:22:49" (1/1) ... [2020-10-16 03:22:49,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222302d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:49, skipping insertion in model container [2020-10-16 03:22:49,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:22:49" (1/1) ... [2020-10-16 03:22:49,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 03:22:49,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 03:22:50,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:22:50,561 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 03:22:50,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:22:50,839 INFO L208 MainTranslator]: Completed translation [2020-10-16 03:22:50,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50 WrapperNode [2020-10-16 03:22:50,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 03:22:50,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 03:22:50,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 03:22:50,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 03:22:50,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (1/1) ... [2020-10-16 03:22:50,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (1/1) ... [2020-10-16 03:22:50,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 03:22:50,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 03:22:50,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 03:22:50,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 03:22:50,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (1/1) ... [2020-10-16 03:22:50,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (1/1) ... [2020-10-16 03:22:50,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (1/1) ... [2020-10-16 03:22:50,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (1/1) ... [2020-10-16 03:22:50,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (1/1) ... [2020-10-16 03:22:51,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (1/1) ... [2020-10-16 03:22:51,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (1/1) ... [2020-10-16 03:22:51,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 03:22:51,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 03:22:51,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 03:22:51,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 03:22:51,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (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 03:22:51,111 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-16 03:22:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-16 03:22:51,111 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-16 03:22:51,112 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-16 03:22:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 03:22:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 03:22:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 03:22:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 03:22:51,112 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 03:22:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 03:22:51,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 03:22:51,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 03:22:51,115 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 03:22:51,587 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 03:22:51,587 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-16 03:22:51,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:22:51 BoogieIcfgContainer [2020-10-16 03:22:51,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 03:22:51,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 03:22:51,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 03:22:51,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 03:22:51,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:22:49" (1/3) ... [2020-10-16 03:22:51,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dacf623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:22:51, skipping insertion in model container [2020-10-16 03:22:51,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:22:50" (2/3) ... [2020-10-16 03:22:51,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dacf623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:22:51, skipping insertion in model container [2020-10-16 03:22:51,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:22:51" (3/3) ... [2020-10-16 03:22:51,600 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2020-10-16 03:22:51,613 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 03:22:51,622 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 03:22:51,623 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 03:22:51,662 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,663 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,663 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,663 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,664 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,664 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,664 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,664 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,665 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,665 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,665 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,665 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,666 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,666 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,666 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,667 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,667 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,667 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,667 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,668 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,668 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,668 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,668 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,668 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,669 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,669 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,669 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,669 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,670 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,670 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,670 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,670 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,670 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,671 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,671 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,671 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,671 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,672 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,672 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,672 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,672 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,673 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,674 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,674 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,674 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,674 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,675 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,675 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,675 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,675 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,676 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,676 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,676 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,676 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,676 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,677 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,677 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,677 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,678 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,678 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,678 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,678 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,679 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,679 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,679 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,681 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,681 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,681 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,681 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,681 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,682 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,682 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,682 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,682 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,683 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,683 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,683 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,684 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,684 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,684 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,684 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,685 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,685 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,688 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,689 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,689 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,689 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,689 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,690 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,690 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,690 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,690 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,691 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,691 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,691 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,692 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,692 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,692 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,692 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,692 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,693 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,693 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,693 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,694 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,694 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,694 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,694 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,695 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,695 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,695 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,695 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,696 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,696 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,696 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,696 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,697 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,697 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,697 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,697 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,701 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,702 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,702 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,702 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,702 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,703 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,703 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,703 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,704 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,704 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,704 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,704 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,705 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,705 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,705 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,705 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,705 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,706 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,706 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,706 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,706 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,707 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,713 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,714 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,714 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,714 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,714 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,714 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,715 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,715 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,716 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,716 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,716 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:22:51,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 03:22:51,769 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 03:22:51,769 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 03:22:51,770 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 03:22:51,770 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 03:22:51,770 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 03:22:51,770 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 03:22:51,770 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 03:22:51,770 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 03:22:51,788 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-10-16 03:22:51,857 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-10-16 03:22:51,858 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:22:51,870 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 142 events. 11/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-16 03:22:51,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 142 transitions, 306 flow [2020-10-16 03:22:51,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 130 transitions, 272 flow [2020-10-16 03:22:51,890 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 03:22:51,894 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 130 transitions, 272 flow [2020-10-16 03:22:51,897 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 130 transitions, 272 flow [2020-10-16 03:22:51,898 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 126 places, 130 transitions, 272 flow [2020-10-16 03:22:51,991 INFO L129 PetriNetUnfolder]: 10/132 cut-off events. [2020-10-16 03:22:51,991 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:22:51,994 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 132 events. 10/132 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 275 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-16 03:22:52,000 INFO L117 LiptonReduction]: Number of co-enabled transitions 5744 [2020-10-16 03:22:54,408 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-16 03:22:54,540 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-16 03:22:55,114 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-16 03:22:55,349 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-16 03:22:55,972 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 119 [2020-10-16 03:22:56,218 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-16 03:22:56,227 INFO L132 LiptonReduction]: Checked pairs total: 9738 [2020-10-16 03:22:56,227 INFO L134 LiptonReduction]: Total number of compositions: 123 [2020-10-16 03:22:56,230 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4343 [2020-10-16 03:22:56,237 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2020-10-16 03:22:56,237 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:22:56,238 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:22:56,239 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 03:22:56,239 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:22:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:22:56,245 INFO L82 PathProgramCache]: Analyzing trace with hash -53310139, now seen corresponding path program 1 times [2020-10-16 03:22:56,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:22:56,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972423543] [2020-10-16 03:22:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:22:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:22:56,463 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 03:22:56,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972423543] [2020-10-16 03:22:56,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:22:56,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:22:56,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391728805] [2020-10-16 03:22:56,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:22:56,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:22:56,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:22:56,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:22:56,491 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 265 [2020-10-16 03:22:56,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states. [2020-10-16 03:22:56,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:22:56,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 265 [2020-10-16 03:22:56,496 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:22:56,574 INFO L129 PetriNetUnfolder]: 54/170 cut-off events. [2020-10-16 03:22:56,574 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2020-10-16 03:22:56,576 INFO L80 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 170 events. 54/170 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 621 event pairs, 18 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 259. Up to 71 conditions per place. [2020-10-16 03:22:56,578 INFO L132 encePairwiseOnDemand]: 260/265 looper letters, 15 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2020-10-16 03:22:56,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 126 flow [2020-10-16 03:22:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:22:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:22:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2020-10-16 03:22:56,599 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7987421383647799 [2020-10-16 03:22:56,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2020-10-16 03:22:56,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2020-10-16 03:22:56,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:22:56,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2020-10-16 03:22:56,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:22:56,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:22:56,621 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:22:56,623 INFO L185 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 635 transitions. [2020-10-16 03:22:56,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 126 flow [2020-10-16 03:22:56,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 118 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 03:22:56,630 INFO L241 Difference]: Finished difference. Result has 34 places, 35 transitions, 89 flow [2020-10-16 03:22:56,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2020-10-16 03:22:56,634 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2020-10-16 03:22:56,634 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 89 flow [2020-10-16 03:22:56,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:22:56,635 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:22:56,635 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:22:56,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 03:22:56,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:22:56,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:22:56,636 INFO L82 PathProgramCache]: Analyzing trace with hash -718786965, now seen corresponding path program 1 times [2020-10-16 03:22:56,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:22:56,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995632168] [2020-10-16 03:22:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:22:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:22:56,732 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 03:22:56,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995632168] [2020-10-16 03:22:56,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:22:56,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:22:56,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373936139] [2020-10-16 03:22:56,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:22:56,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:22:56,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:22:56,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:22:56,736 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 265 [2020-10-16 03:22:56,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 89 flow. Second operand 3 states. [2020-10-16 03:22:56,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:22:56,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 265 [2020-10-16 03:22:56,738 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:22:56,764 INFO L129 PetriNetUnfolder]: 12/93 cut-off events. [2020-10-16 03:22:56,764 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2020-10-16 03:22:56,765 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 93 events. 12/93 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 262 event pairs, 1 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 90. Up to 11 conditions per place. [2020-10-16 03:22:56,766 INFO L132 encePairwiseOnDemand]: 262/265 looper letters, 4 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2020-10-16 03:22:56,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 105 flow [2020-10-16 03:22:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:22:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:22:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2020-10-16 03:22:56,771 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8616352201257862 [2020-10-16 03:22:56,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2020-10-16 03:22:56,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2020-10-16 03:22:56,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:22:56,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2020-10-16 03:22:56,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:22:56,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:22:56,777 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:22:56,778 INFO L185 Difference]: Start difference. First operand has 34 places, 35 transitions, 89 flow. Second operand 3 states and 685 transitions. [2020-10-16 03:22:56,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 105 flow [2020-10-16 03:22:56,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:22:56,780 INFO L241 Difference]: Finished difference. Result has 36 places, 36 transitions, 101 flow [2020-10-16 03:22:56,780 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2020-10-16 03:22:56,781 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2020-10-16 03:22:56,781 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 101 flow [2020-10-16 03:22:56,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:22:56,782 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:22:56,782 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:22:56,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 03:22:56,782 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:22:56,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:22:56,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1326023728, now seen corresponding path program 1 times [2020-10-16 03:22:56,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:22:56,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354654424] [2020-10-16 03:22:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:22:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:22:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:22:56,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354654424] [2020-10-16 03:22:56,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640396847] [2020-10-16 03:22:56,888 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 03:22:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:22:56,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 03:22:56,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:22:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:22:57,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:22:57,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-16 03:22:57,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810942749] [2020-10-16 03:22:57,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 03:22:57,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:22:57,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 03:22:57,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 03:22:57,042 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 265 [2020-10-16 03:22:57,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 101 flow. Second operand 7 states. [2020-10-16 03:22:57,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:22:57,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 265 [2020-10-16 03:22:57,044 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:22:57,228 INFO L129 PetriNetUnfolder]: 104/365 cut-off events. [2020-10-16 03:22:57,228 INFO L130 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2020-10-16 03:22:57,230 INFO L80 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 365 events. 104/365 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2035 event pairs, 12 based on Foata normal form. 13/336 useless extension candidates. Maximal degree in co-relation 568. Up to 83 conditions per place. [2020-10-16 03:22:57,233 INFO L132 encePairwiseOnDemand]: 257/265 looper letters, 25 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2020-10-16 03:22:57,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 247 flow [2020-10-16 03:22:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 03:22:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 03:22:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1456 transitions. [2020-10-16 03:22:57,239 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7849056603773585 [2020-10-16 03:22:57,239 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1456 transitions. [2020-10-16 03:22:57,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1456 transitions. [2020-10-16 03:22:57,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:22:57,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1456 transitions. [2020-10-16 03:22:57,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 03:22:57,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 03:22:57,248 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 03:22:57,248 INFO L185 Difference]: Start difference. First operand has 36 places, 36 transitions, 101 flow. Second operand 7 states and 1456 transitions. [2020-10-16 03:22:57,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 247 flow [2020-10-16 03:22:57,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 59 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:22:57,252 INFO L241 Difference]: Finished difference. Result has 46 places, 46 transitions, 206 flow [2020-10-16 03:22:57,252 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2020-10-16 03:22:57,253 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2020-10-16 03:22:57,253 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 206 flow [2020-10-16 03:22:57,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 03:22:57,253 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:22:57,253 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:22:57,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 03:22:57,468 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:22:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:22:57,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1109506489, now seen corresponding path program 1 times [2020-10-16 03:22:57,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:22:57,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179671710] [2020-10-16 03:22:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:22:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:22:57,556 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 03:22:57,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179671710] [2020-10-16 03:22:57,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:22:57,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:22:57,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208914395] [2020-10-16 03:22:57,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:22:57,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:22:57,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:22:57,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:22:57,560 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 265 [2020-10-16 03:22:57,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 206 flow. Second operand 3 states. [2020-10-16 03:22:57,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:22:57,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 265 [2020-10-16 03:22:57,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:22:57,595 INFO L129 PetriNetUnfolder]: 14/122 cut-off events. [2020-10-16 03:22:57,595 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2020-10-16 03:22:57,596 INFO L80 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 122 events. 14/122 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 420 event pairs, 0 based on Foata normal form. 12/134 useless extension candidates. Maximal degree in co-relation 195. Up to 14 conditions per place. [2020-10-16 03:22:57,597 INFO L132 encePairwiseOnDemand]: 260/265 looper letters, 1 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2020-10-16 03:22:57,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 200 flow [2020-10-16 03:22:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:22:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:22:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2020-10-16 03:22:57,600 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7836477987421384 [2020-10-16 03:22:57,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2020-10-16 03:22:57,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2020-10-16 03:22:57,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:22:57,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2020-10-16 03:22:57,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:22:57,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:22:57,605 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:22:57,605 INFO L185 Difference]: Start difference. First operand has 46 places, 46 transitions, 206 flow. Second operand 3 states and 623 transitions. [2020-10-16 03:22:57,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 200 flow [2020-10-16 03:22:57,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 190 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 03:22:57,609 INFO L241 Difference]: Finished difference. Result has 46 places, 44 transitions, 188 flow [2020-10-16 03:22:57,609 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2020-10-16 03:22:57,609 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2020-10-16 03:22:57,610 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 188 flow [2020-10-16 03:22:57,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:22:57,610 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:22:57,610 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:22:57,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 03:22:57,610 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:22:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:22:57,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1762703770, now seen corresponding path program 1 times [2020-10-16 03:22:57,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:22:57,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762846343] [2020-10-16 03:22:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:22:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:22:57,652 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 03:22:57,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762846343] [2020-10-16 03:22:57,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:22:57,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:22:57,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644362609] [2020-10-16 03:22:57,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:22:57,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:22:57,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:22:57,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:22:57,655 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 265 [2020-10-16 03:22:57,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 188 flow. Second operand 3 states. [2020-10-16 03:22:57,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:22:57,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 265 [2020-10-16 03:22:57,656 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:22:57,712 INFO L129 PetriNetUnfolder]: 15/130 cut-off events. [2020-10-16 03:22:57,712 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2020-10-16 03:22:57,713 INFO L80 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 130 events. 15/130 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 476 event pairs, 0 based on Foata normal form. 3/133 useless extension candidates. Maximal degree in co-relation 251. Up to 35 conditions per place. [2020-10-16 03:22:57,714 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 21 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2020-10-16 03:22:57,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 258 flow [2020-10-16 03:22:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:22:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:22:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2020-10-16 03:22:57,717 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7987421383647799 [2020-10-16 03:22:57,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2020-10-16 03:22:57,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2020-10-16 03:22:57,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:22:57,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2020-10-16 03:22:57,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:22:57,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:22:57,721 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:22:57,721 INFO L185 Difference]: Start difference. First operand has 46 places, 44 transitions, 188 flow. Second operand 3 states and 635 transitions. [2020-10-16 03:22:57,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 258 flow [2020-10-16 03:22:57,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:22:57,725 INFO L241 Difference]: Finished difference. Result has 49 places, 45 transitions, 218 flow [2020-10-16 03:22:57,725 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2020-10-16 03:22:57,726 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2020-10-16 03:22:57,726 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 218 flow [2020-10-16 03:22:57,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:22:57,726 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:22:57,726 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 03:22:57,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 03:22:57,727 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:22:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:22:57,727 INFO L82 PathProgramCache]: Analyzing trace with hash -253362459, now seen corresponding path program 2 times [2020-10-16 03:22:57,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:22:57,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445373593] [2020-10-16 03:22:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:22:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:22:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:22:57,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445373593] [2020-10-16 03:22:57,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019862269] [2020-10-16 03:22:57,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 03:22:57,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 03:22:57,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:22:57,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 03:22:57,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:22:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:22:57,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:22:57,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-16 03:22:57,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284452279] [2020-10-16 03:22:57,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 03:22:57,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:22:57,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 03:22:57,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-16 03:22:57,955 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 265 [2020-10-16 03:22:57,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 218 flow. Second operand 9 states. [2020-10-16 03:22:57,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:22:57,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 265 [2020-10-16 03:22:57,958 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:22:58,109 INFO L129 PetriNetUnfolder]: 18/159 cut-off events. [2020-10-16 03:22:58,109 INFO L130 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2020-10-16 03:22:58,110 INFO L80 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 159 events. 18/159 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 319. Up to 31 conditions per place. [2020-10-16 03:22:58,111 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 31 selfloop transitions, 13 changer transitions 0/65 dead transitions. [2020-10-16 03:22:58,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 394 flow [2020-10-16 03:22:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 03:22:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-16 03:22:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1860 transitions. [2020-10-16 03:22:58,118 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.779874213836478 [2020-10-16 03:22:58,118 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1860 transitions. [2020-10-16 03:22:58,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1860 transitions. [2020-10-16 03:22:58,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:22:58,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1860 transitions. [2020-10-16 03:22:58,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-16 03:22:58,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-16 03:22:58,129 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-16 03:22:58,129 INFO L185 Difference]: Start difference. First operand has 49 places, 45 transitions, 218 flow. Second operand 9 states and 1860 transitions. [2020-10-16 03:22:58,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 394 flow [2020-10-16 03:22:58,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 372 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-16 03:22:58,133 INFO L241 Difference]: Finished difference. Result has 57 places, 49 transitions, 275 flow [2020-10-16 03:22:58,134 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=275, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2020-10-16 03:22:58,134 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2020-10-16 03:22:58,134 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 275 flow [2020-10-16 03:22:58,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 03:22:58,134 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:22:58,134 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:22:58,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:22:58,349 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:22:58,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:22:58,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2090411549, now seen corresponding path program 1 times [2020-10-16 03:22:58,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:22:58,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805619823] [2020-10-16 03:22:58,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:22:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:22:58,964 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 03:22:58,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805619823] [2020-10-16 03:22:58,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:22:58,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-16 03:22:58,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627190461] [2020-10-16 03:22:58,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 03:22:58,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:22:58,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 03:22:58,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-16 03:22:58,969 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 265 [2020-10-16 03:22:58,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 275 flow. Second operand 15 states. [2020-10-16 03:22:58,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:22:58,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 265 [2020-10-16 03:22:58,970 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:00,589 INFO L129 PetriNetUnfolder]: 333/850 cut-off events. [2020-10-16 03:23:00,590 INFO L130 PetriNetUnfolder]: For 983/983 co-relation queries the response was YES. [2020-10-16 03:23:00,592 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 850 events. 333/850 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4871 event pairs, 36 based on Foata normal form. 18/849 useless extension candidates. Maximal degree in co-relation 707. Up to 437 conditions per place. [2020-10-16 03:23:00,598 INFO L132 encePairwiseOnDemand]: 248/265 looper letters, 87 selfloop transitions, 22 changer transitions 3/124 dead transitions. [2020-10-16 03:23:00,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 124 transitions, 732 flow [2020-10-16 03:23:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 03:23:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-16 03:23:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2107 transitions. [2020-10-16 03:23:00,609 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4677025527192009 [2020-10-16 03:23:00,609 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2107 transitions. [2020-10-16 03:23:00,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2107 transitions. [2020-10-16 03:23:00,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:00,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2107 transitions. [2020-10-16 03:23:00,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-16 03:23:00,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-16 03:23:00,625 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-16 03:23:00,625 INFO L185 Difference]: Start difference. First operand has 57 places, 49 transitions, 275 flow. Second operand 17 states and 2107 transitions. [2020-10-16 03:23:00,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 124 transitions, 732 flow [2020-10-16 03:23:00,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 703 flow, removed 4 selfloop flow, removed 5 redundant places. [2020-10-16 03:23:00,633 INFO L241 Difference]: Finished difference. Result has 81 places, 68 transitions, 465 flow [2020-10-16 03:23:00,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=465, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2020-10-16 03:23:00,634 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 46 predicate places. [2020-10-16 03:23:00,634 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 465 flow [2020-10-16 03:23:00,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 03:23:00,634 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:00,635 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-10-16 03:23:00,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 03:23:00,635 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2128544112, now seen corresponding path program 3 times [2020-10-16 03:23:00,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:00,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283387808] [2020-10-16 03:23:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:00,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283387808] [2020-10-16 03:23:00,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56029075] [2020-10-16 03:23:00,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 03:23:00,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 03:23:00,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:00,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 03:23:00,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:00,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:00,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-16 03:23:00,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314237167] [2020-10-16 03:23:00,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 03:23:00,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:00,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 03:23:00,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-16 03:23:00,891 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 265 [2020-10-16 03:23:00,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 465 flow. Second operand 11 states. [2020-10-16 03:23:00,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:00,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 265 [2020-10-16 03:23:00,894 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:01,069 INFO L129 PetriNetUnfolder]: 25/246 cut-off events. [2020-10-16 03:23:01,069 INFO L130 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2020-10-16 03:23:01,070 INFO L80 FinitePrefix]: Finished finitePrefix Result has 791 conditions, 246 events. 25/246 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1039 event pairs, 0 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 701. Up to 44 conditions per place. [2020-10-16 03:23:01,072 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 47 selfloop transitions, 20 changer transitions 0/94 dead transitions. [2020-10-16 03:23:01,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 94 transitions, 780 flow [2020-10-16 03:23:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 03:23:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-16 03:23:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2273 transitions. [2020-10-16 03:23:01,079 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7797598627787307 [2020-10-16 03:23:01,079 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2273 transitions. [2020-10-16 03:23:01,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2273 transitions. [2020-10-16 03:23:01,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:01,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2273 transitions. [2020-10-16 03:23:01,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-16 03:23:01,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-16 03:23:01,090 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-16 03:23:01,090 INFO L185 Difference]: Start difference. First operand has 81 places, 68 transitions, 465 flow. Second operand 11 states and 2273 transitions. [2020-10-16 03:23:01,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 94 transitions, 780 flow [2020-10-16 03:23:01,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 761 flow, removed 6 selfloop flow, removed 3 redundant places. [2020-10-16 03:23:01,097 INFO L241 Difference]: Finished difference. Result has 90 places, 72 transitions, 547 flow [2020-10-16 03:23:01,098 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=547, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2020-10-16 03:23:01,098 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 55 predicate places. [2020-10-16 03:23:01,098 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 547 flow [2020-10-16 03:23:01,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 03:23:01,098 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:01,098 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:01,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:01,312 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:01,312 INFO L82 PathProgramCache]: Analyzing trace with hash -205644846, now seen corresponding path program 2 times [2020-10-16 03:23:01,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:01,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951561953] [2020-10-16 03:23:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:01,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951561953] [2020-10-16 03:23:01,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728907311] [2020-10-16 03:23:01,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 03:23:01,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-16 03:23:01,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:01,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 45 conjunts are in the unsatisfiable core [2020-10-16 03:23:01,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:01,961 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 939 treesize of output 907 [2020-10-16 03:23:01,972 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:02,110 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 20 [2020-10-16 03:23:02,111 INFO L625 ElimStorePlain]: treesize reduction 828, result has 2.5 percent of original size [2020-10-16 03:23:02,118 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:23:02,119 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:23, output treesize:4 [2020-10-16 03:23:02,336 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 03:23:02,337 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:02,362 INFO L625 ElimStorePlain]: treesize reduction 3, result has 93.0 percent of original size [2020-10-16 03:23:02,368 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:23:02,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:54 [2020-10-16 03:23:02,655 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 37 [2020-10-16 03:23:02,656 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:02,673 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:02,676 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:02,677 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:69, output treesize:65 [2020-10-16 03:23:03,298 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:23:03,322 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 31 [2020-10-16 03:23:03,348 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:03,353 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 34 [2020-10-16 03:23:03,450 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 03:23:03,653 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 03:23:04,298 INFO L545 ElimStorePlain]: Start of recursive call 3: 12 dim-0 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:04,433 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 33 [2020-10-16 03:23:04,434 INFO L625 ElimStorePlain]: treesize reduction 333, result has 17.2 percent of original size [2020-10-16 03:23:04,440 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:04,441 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:178, output treesize:65 [2020-10-16 03:23:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 03:23:04,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 03:23:04,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 28 [2020-10-16 03:23:04,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645687417] [2020-10-16 03:23:04,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 03:23:04,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:04,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 03:23:04,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=801, Unknown=0, NotChecked=0, Total=870 [2020-10-16 03:23:04,580 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 265 [2020-10-16 03:23:04,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 547 flow. Second operand 15 states. [2020-10-16 03:23:04,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:04,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 265 [2020-10-16 03:23:04,582 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:05,495 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-16 03:23:07,160 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-16 03:23:07,600 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-16 03:23:07,935 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-16 03:23:09,653 INFO L129 PetriNetUnfolder]: 742/1906 cut-off events. [2020-10-16 03:23:09,653 INFO L130 PetriNetUnfolder]: For 4621/4621 co-relation queries the response was YES. [2020-10-16 03:23:09,665 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6497 conditions, 1906 events. 742/1906 cut-off events. For 4621/4621 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13094 event pairs, 55 based on Foata normal form. 0/1864 useless extension candidates. Maximal degree in co-relation 5330. Up to 308 conditions per place. [2020-10-16 03:23:09,677 INFO L132 encePairwiseOnDemand]: 249/265 looper letters, 109 selfloop transitions, 95 changer transitions 0/216 dead transitions. [2020-10-16 03:23:09,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 216 transitions, 1765 flow [2020-10-16 03:23:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 03:23:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-16 03:23:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3293 transitions. [2020-10-16 03:23:09,689 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4602375960866527 [2020-10-16 03:23:09,690 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3293 transitions. [2020-10-16 03:23:09,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3293 transitions. [2020-10-16 03:23:09,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:09,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3293 transitions. [2020-10-16 03:23:09,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 28 states. [2020-10-16 03:23:09,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 28 states. [2020-10-16 03:23:09,709 INFO L81 ComplementDD]: Finished complementDD. Result 28 states. [2020-10-16 03:23:09,709 INFO L185 Difference]: Start difference. First operand has 90 places, 72 transitions, 547 flow. Second operand 27 states and 3293 transitions. [2020-10-16 03:23:09,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 216 transitions, 1765 flow [2020-10-16 03:23:09,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 216 transitions, 1655 flow, removed 22 selfloop flow, removed 8 redundant places. [2020-10-16 03:23:09,735 INFO L241 Difference]: Finished difference. Result has 118 places, 132 transitions, 1279 flow [2020-10-16 03:23:09,735 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1279, PETRI_PLACES=118, PETRI_TRANSITIONS=132} [2020-10-16 03:23:09,736 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 83 predicate places. [2020-10-16 03:23:09,736 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 132 transitions, 1279 flow [2020-10-16 03:23:09,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 03:23:09,736 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:09,737 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:09,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:09,953 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:09,953 INFO L82 PathProgramCache]: Analyzing trace with hash 791706936, now seen corresponding path program 3 times [2020-10-16 03:23:09,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:09,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2798664] [2020-10-16 03:23:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:10,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2798664] [2020-10-16 03:23:10,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174867425] [2020-10-16 03:23:10,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:10,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-16 03:23:10,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:10,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-16 03:23:10,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:10,667 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 03:23:10,668 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:10,694 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 03:23:10,696 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:23:10,696 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 03:23:11,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:23:11,150 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 03:23:11,175 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:11,188 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 03:23:11,264 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 03:23:11,626 INFO L545 ElimStorePlain]: Start of recursive call 3: 9 dim-0 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:11,966 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2020-10-16 03:23:11,967 INFO L625 ElimStorePlain]: treesize reduction 101, result has 65.8 percent of original size [2020-10-16 03:23:12,034 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 9 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:12,035 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:194 [2020-10-16 03:23:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 03:23:12,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 03:23:12,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 26 [2020-10-16 03:23:12,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421385929] [2020-10-16 03:23:12,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 03:23:12,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:12,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 03:23:12,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2020-10-16 03:23:12,284 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 03:23:12,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 132 transitions, 1279 flow. Second operand 13 states. [2020-10-16 03:23:12,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:12,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 03:23:12,285 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:13,164 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-16 03:23:14,957 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-16 03:23:16,259 INFO L129 PetriNetUnfolder]: 804/2065 cut-off events. [2020-10-16 03:23:16,259 INFO L130 PetriNetUnfolder]: For 6010/6012 co-relation queries the response was YES. [2020-10-16 03:23:16,278 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8211 conditions, 2065 events. 804/2065 cut-off events. For 6010/6012 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14379 event pairs, 49 based on Foata normal form. 0/2017 useless extension candidates. Maximal degree in co-relation 6264. Up to 447 conditions per place. [2020-10-16 03:23:16,302 INFO L132 encePairwiseOnDemand]: 250/265 looper letters, 89 selfloop transitions, 112 changer transitions 0/213 dead transitions. [2020-10-16 03:23:16,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 213 transitions, 2082 flow [2020-10-16 03:23:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 03:23:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-16 03:23:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3065 transitions. [2020-10-16 03:23:16,411 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.48191823899371067 [2020-10-16 03:23:16,412 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3065 transitions. [2020-10-16 03:23:16,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3065 transitions. [2020-10-16 03:23:16,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:16,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3065 transitions. [2020-10-16 03:23:16,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 25 states. [2020-10-16 03:23:16,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 25 states. [2020-10-16 03:23:16,429 INFO L81 ComplementDD]: Finished complementDD. Result 25 states. [2020-10-16 03:23:16,429 INFO L185 Difference]: Start difference. First operand has 118 places, 132 transitions, 1279 flow. Second operand 24 states and 3065 transitions. [2020-10-16 03:23:16,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 213 transitions, 2082 flow [2020-10-16 03:23:16,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 213 transitions, 1853 flow, removed 77 selfloop flow, removed 9 redundant places. [2020-10-16 03:23:16,470 INFO L241 Difference]: Finished difference. Result has 136 places, 149 transitions, 1517 flow [2020-10-16 03:23:16,471 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1517, PETRI_PLACES=136, PETRI_TRANSITIONS=149} [2020-10-16 03:23:16,471 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 101 predicate places. [2020-10-16 03:23:16,471 INFO L481 AbstractCegarLoop]: Abstraction has has 136 places, 149 transitions, 1517 flow [2020-10-16 03:23:16,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 03:23:16,471 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:16,472 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:16,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 03:23:16,687 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:16,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1522883852, now seen corresponding path program 1 times [2020-10-16 03:23:16,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:16,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038948203] [2020-10-16 03:23:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 03:23:16,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038948203] [2020-10-16 03:23:16,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999788742] [2020-10-16 03:23:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 03:23:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:16,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 03:23:16,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 03:23:16,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:16,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 03:23:16,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339784697] [2020-10-16 03:23:16,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 03:23:16,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:16,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 03:23:16,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-16 03:23:16,884 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 03:23:16,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 149 transitions, 1517 flow. Second operand 10 states. [2020-10-16 03:23:16,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:16,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 03:23:16,886 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:17,158 INFO L129 PetriNetUnfolder]: 153/846 cut-off events. [2020-10-16 03:23:17,159 INFO L130 PetriNetUnfolder]: For 2273/2273 co-relation queries the response was YES. [2020-10-16 03:23:17,165 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 846 events. 153/846 cut-off events. For 2273/2273 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5266 event pairs, 3 based on Foata normal form. 4/837 useless extension candidates. Maximal degree in co-relation 2989. Up to 189 conditions per place. [2020-10-16 03:23:17,170 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 114 selfloop transitions, 49 changer transitions 0/211 dead transitions. [2020-10-16 03:23:17,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 211 transitions, 2406 flow [2020-10-16 03:23:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 03:23:17,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-16 03:23:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2239 transitions. [2020-10-16 03:23:17,174 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7680960548885077 [2020-10-16 03:23:17,174 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2239 transitions. [2020-10-16 03:23:17,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2239 transitions. [2020-10-16 03:23:17,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:17,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2239 transitions. [2020-10-16 03:23:17,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-16 03:23:17,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-16 03:23:17,181 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-16 03:23:17,181 INFO L185 Difference]: Start difference. First operand has 136 places, 149 transitions, 1517 flow. Second operand 11 states and 2239 transitions. [2020-10-16 03:23:17,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 211 transitions, 2406 flow [2020-10-16 03:23:17,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 211 transitions, 2244 flow, removed 36 selfloop flow, removed 9 redundant places. [2020-10-16 03:23:17,203 INFO L241 Difference]: Finished difference. Result has 142 places, 164 transitions, 1758 flow [2020-10-16 03:23:17,204 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1758, PETRI_PLACES=142, PETRI_TRANSITIONS=164} [2020-10-16 03:23:17,204 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 107 predicate places. [2020-10-16 03:23:17,204 INFO L481 AbstractCegarLoop]: Abstraction has has 142 places, 164 transitions, 1758 flow [2020-10-16 03:23:17,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 03:23:17,204 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:17,204 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-16 03:23:17,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:17,418 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:17,418 INFO L82 PathProgramCache]: Analyzing trace with hash -893249403, now seen corresponding path program 4 times [2020-10-16 03:23:17,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:17,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620167220] [2020-10-16 03:23:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:17,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620167220] [2020-10-16 03:23:17,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480247453] [2020-10-16 03:23:17,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 03:23:17,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 03:23:17,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:17,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 03:23:17,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:17,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:17,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-16 03:23:17,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342900768] [2020-10-16 03:23:17,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 03:23:17,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:17,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 03:23:17,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-16 03:23:17,668 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 265 [2020-10-16 03:23:17,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 164 transitions, 1758 flow. Second operand 13 states. [2020-10-16 03:23:17,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:17,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 265 [2020-10-16 03:23:17,670 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:18,014 INFO L129 PetriNetUnfolder]: 110/788 cut-off events. [2020-10-16 03:23:18,014 INFO L130 PetriNetUnfolder]: For 2565/2565 co-relation queries the response was YES. [2020-10-16 03:23:18,022 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 788 events. 110/788 cut-off events. For 2565/2565 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5203 event pairs, 0 based on Foata normal form. 4/783 useless extension candidates. Maximal degree in co-relation 2839. Up to 148 conditions per place. [2020-10-16 03:23:18,027 INFO L132 encePairwiseOnDemand]: 259/265 looper letters, 128 selfloop transitions, 44 changer transitions 0/221 dead transitions. [2020-10-16 03:23:18,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 221 transitions, 2622 flow [2020-10-16 03:23:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 03:23:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 03:23:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2686 transitions. [2020-10-16 03:23:18,032 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7796806966618287 [2020-10-16 03:23:18,033 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2686 transitions. [2020-10-16 03:23:18,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2686 transitions. [2020-10-16 03:23:18,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:18,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2686 transitions. [2020-10-16 03:23:18,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 03:23:18,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 03:23:18,043 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 03:23:18,043 INFO L185 Difference]: Start difference. First operand has 142 places, 164 transitions, 1758 flow. Second operand 13 states and 2686 transitions. [2020-10-16 03:23:18,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 221 transitions, 2622 flow [2020-10-16 03:23:18,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 221 transitions, 2578 flow, removed 9 selfloop flow, removed 4 redundant places. [2020-10-16 03:23:18,072 INFO L241 Difference]: Finished difference. Result has 152 places, 171 transitions, 1936 flow [2020-10-16 03:23:18,073 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1936, PETRI_PLACES=152, PETRI_TRANSITIONS=171} [2020-10-16 03:23:18,073 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 117 predicate places. [2020-10-16 03:23:18,073 INFO L481 AbstractCegarLoop]: Abstraction has has 152 places, 171 transitions, 1936 flow [2020-10-16 03:23:18,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 03:23:18,074 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:18,074 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:18,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:18,287 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:18,288 INFO L82 PathProgramCache]: Analyzing trace with hash -859522357, now seen corresponding path program 1 times [2020-10-16 03:23:18,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:18,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363830361] [2020-10-16 03:23:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:19,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363830361] [2020-10-16 03:23:19,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835388855] [2020-10-16 03:23:19,080 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 03:23:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:19,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 72 conjunts are in the unsatisfiable core [2020-10-16 03:23:19,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:19,189 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 79 [2020-10-16 03:23:19,190 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:19,234 INFO L625 ElimStorePlain]: treesize reduction 55, result has 30.4 percent of original size [2020-10-16 03:23:19,236 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:23:19,237 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:27, output treesize:8 [2020-10-16 03:23:19,461 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 03:23:19,461 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:19,496 INFO L625 ElimStorePlain]: treesize reduction 3, result has 93.5 percent of original size [2020-10-16 03:23:19,498 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:23:19,498 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:50, output treesize:57 [2020-10-16 03:23:19,652 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 36 [2020-10-16 03:23:19,653 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:19,673 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:19,674 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:19,675 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:68, output treesize:64 [2020-10-16 03:23:20,214 INFO L350 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-10-16 03:23:20,215 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 51 [2020-10-16 03:23:20,216 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:20,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:20,237 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:20,237 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:83, output treesize:68 [2020-10-16 03:23:23,838 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:23,841 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:23,843 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:23,846 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:23,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:23,853 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:23,856 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:23,859 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:23,870 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 03:23:23,873 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 03:23:23,875 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 34 [2020-10-16 03:23:23,902 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:23,916 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:23,917 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 48 [2020-10-16 03:23:23,926 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:23:23,933 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:23:23,937 INFO L545 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:24,056 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 40 [2020-10-16 03:23:24,057 INFO L625 ElimStorePlain]: treesize reduction 128, result has 35.0 percent of original size [2020-10-16 03:23:24,067 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:24,068 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:212, output treesize:44 [2020-10-16 03:23:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:24,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:24,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 40 [2020-10-16 03:23:24,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563353925] [2020-10-16 03:23:24,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-16 03:23:24,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:24,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-16 03:23:24,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1598, Unknown=1, NotChecked=0, Total=1722 [2020-10-16 03:23:24,206 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 265 [2020-10-16 03:23:24,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 171 transitions, 1936 flow. Second operand 42 states. [2020-10-16 03:23:24,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:24,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 265 [2020-10-16 03:23:24,209 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:26,252 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-10-16 03:23:27,666 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-10-16 03:23:28,309 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2020-10-16 03:23:28,645 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2020-10-16 03:23:29,264 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2020-10-16 03:23:29,665 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-10-16 03:23:30,491 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-16 03:23:31,138 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-16 03:23:33,006 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-16 03:23:33,402 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-16 03:23:34,039 INFO L129 PetriNetUnfolder]: 1231/3218 cut-off events. [2020-10-16 03:23:34,039 INFO L130 PetriNetUnfolder]: For 10470/10470 co-relation queries the response was YES. [2020-10-16 03:23:34,054 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12796 conditions, 3218 events. 1231/3218 cut-off events. For 10470/10470 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 24494 event pairs, 209 based on Foata normal form. 27/3159 useless extension candidates. Maximal degree in co-relation 10097. Up to 1861 conditions per place. [2020-10-16 03:23:34,068 INFO L132 encePairwiseOnDemand]: 248/265 looper letters, 266 selfloop transitions, 83 changer transitions 14/375 dead transitions. [2020-10-16 03:23:34,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 375 transitions, 4018 flow [2020-10-16 03:23:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-16 03:23:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-16 03:23:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4882 transitions. [2020-10-16 03:23:34,075 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.46056603773584903 [2020-10-16 03:23:34,075 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4882 transitions. [2020-10-16 03:23:34,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4882 transitions. [2020-10-16 03:23:34,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:34,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4882 transitions. [2020-10-16 03:23:34,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 41 states. [2020-10-16 03:23:34,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 41 states. [2020-10-16 03:23:34,092 INFO L81 ComplementDD]: Finished complementDD. Result 41 states. [2020-10-16 03:23:34,092 INFO L185 Difference]: Start difference. First operand has 152 places, 171 transitions, 1936 flow. Second operand 40 states and 4882 transitions. [2020-10-16 03:23:34,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 375 transitions, 4018 flow [2020-10-16 03:23:34,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 375 transitions, 3872 flow, removed 22 selfloop flow, removed 10 redundant places. [2020-10-16 03:23:34,146 INFO L241 Difference]: Finished difference. Result has 200 places, 240 transitions, 2908 flow [2020-10-16 03:23:34,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2908, PETRI_PLACES=200, PETRI_TRANSITIONS=240} [2020-10-16 03:23:34,147 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 165 predicate places. [2020-10-16 03:23:34,147 INFO L481 AbstractCegarLoop]: Abstraction has has 200 places, 240 transitions, 2908 flow [2020-10-16 03:23:34,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-16 03:23:34,148 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:34,148 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:34,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 03:23:34,363 INFO L429 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:34,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:34,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1858710157, now seen corresponding path program 2 times [2020-10-16 03:23:34,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:34,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006748232] [2020-10-16 03:23:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 03:23:34,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006748232] [2020-10-16 03:23:34,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980237266] [2020-10-16 03:23:34,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 03:23:34,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 03:23:34,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:34,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 03:23:34,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 03:23:34,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:34,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-16 03:23:34,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558972494] [2020-10-16 03:23:34,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 03:23:34,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:34,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 03:23:34,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 03:23:34,599 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 03:23:34,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 240 transitions, 2908 flow. Second operand 12 states. [2020-10-16 03:23:34,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:34,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 03:23:34,600 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:35,007 INFO L129 PetriNetUnfolder]: 196/1178 cut-off events. [2020-10-16 03:23:35,007 INFO L130 PetriNetUnfolder]: For 5427/5427 co-relation queries the response was YES. [2020-10-16 03:23:35,015 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 1178 events. 196/1178 cut-off events. For 5427/5427 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 8035 event pairs, 3 based on Foata normal form. 4/1171 useless extension candidates. Maximal degree in co-relation 5021. Up to 190 conditions per place. [2020-10-16 03:23:35,022 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 143 selfloop transitions, 95 changer transitions 0/310 dead transitions. [2020-10-16 03:23:35,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 310 transitions, 4070 flow [2020-10-16 03:23:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 03:23:35,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-16 03:23:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2847 transitions. [2020-10-16 03:23:35,026 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7673854447439353 [2020-10-16 03:23:35,027 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2847 transitions. [2020-10-16 03:23:35,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2847 transitions. [2020-10-16 03:23:35,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:35,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2847 transitions. [2020-10-16 03:23:35,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-16 03:23:35,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-16 03:23:35,035 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-16 03:23:35,035 INFO L185 Difference]: Start difference. First operand has 200 places, 240 transitions, 2908 flow. Second operand 14 states and 2847 transitions. [2020-10-16 03:23:35,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 310 transitions, 4070 flow [2020-10-16 03:23:35,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 310 transitions, 3863 flow, removed 64 selfloop flow, removed 9 redundant places. [2020-10-16 03:23:35,088 INFO L241 Difference]: Finished difference. Result has 209 places, 254 transitions, 3232 flow [2020-10-16 03:23:35,089 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3232, PETRI_PLACES=209, PETRI_TRANSITIONS=254} [2020-10-16 03:23:35,089 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 174 predicate places. [2020-10-16 03:23:35,089 INFO L481 AbstractCegarLoop]: Abstraction has has 209 places, 254 transitions, 3232 flow [2020-10-16 03:23:35,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 03:23:35,089 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:35,089 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:35,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:35,305 INFO L429 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:35,305 INFO L82 PathProgramCache]: Analyzing trace with hash -740479917, now seen corresponding path program 3 times [2020-10-16 03:23:35,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:35,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205811884] [2020-10-16 03:23:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 03:23:35,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205811884] [2020-10-16 03:23:35,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030397566] [2020-10-16 03:23:35,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:35,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 03:23:35,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:35,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 03:23:35,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 03:23:35,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:35,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-10-16 03:23:35,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070691963] [2020-10-16 03:23:35,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 03:23:35,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:35,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 03:23:35,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-16 03:23:35,544 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 03:23:35,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 254 transitions, 3232 flow. Second operand 10 states. [2020-10-16 03:23:35,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:35,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 03:23:35,546 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:36,039 INFO L129 PetriNetUnfolder]: 202/1240 cut-off events. [2020-10-16 03:23:36,039 INFO L130 PetriNetUnfolder]: For 6169/6169 co-relation queries the response was YES. [2020-10-16 03:23:36,048 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5593 conditions, 1240 events. 202/1240 cut-off events. For 6169/6169 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8621 event pairs, 3 based on Foata normal form. 3/1232 useless extension candidates. Maximal degree in co-relation 5350. Up to 337 conditions per place. [2020-10-16 03:23:36,054 INFO L132 encePairwiseOnDemand]: 257/265 looper letters, 163 selfloop transitions, 64 changer transitions 0/299 dead transitions. [2020-10-16 03:23:36,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 299 transitions, 4187 flow [2020-10-16 03:23:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 03:23:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-16 03:23:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2040 transitions. [2020-10-16 03:23:36,057 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.769811320754717 [2020-10-16 03:23:36,057 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2040 transitions. [2020-10-16 03:23:36,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2040 transitions. [2020-10-16 03:23:36,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:36,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2040 transitions. [2020-10-16 03:23:36,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-16 03:23:36,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-16 03:23:36,063 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-16 03:23:36,063 INFO L185 Difference]: Start difference. First operand has 209 places, 254 transitions, 3232 flow. Second operand 10 states and 2040 transitions. [2020-10-16 03:23:36,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 299 transitions, 4187 flow [2020-10-16 03:23:36,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 299 transitions, 4010 flow, removed 26 selfloop flow, removed 7 redundant places. [2020-10-16 03:23:36,113 INFO L241 Difference]: Finished difference. Result has 218 places, 265 transitions, 3541 flow [2020-10-16 03:23:36,113 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3541, PETRI_PLACES=218, PETRI_TRANSITIONS=265} [2020-10-16 03:23:36,113 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 183 predicate places. [2020-10-16 03:23:36,113 INFO L481 AbstractCegarLoop]: Abstraction has has 218 places, 265 transitions, 3541 flow [2020-10-16 03:23:36,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 03:23:36,114 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:36,114 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2020-10-16 03:23:36,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 03:23:36,328 INFO L429 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:36,329 INFO L82 PathProgramCache]: Analyzing trace with hash 31641840, now seen corresponding path program 5 times [2020-10-16 03:23:36,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:36,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757558445] [2020-10-16 03:23:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:36,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757558445] [2020-10-16 03:23:36,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111949083] [2020-10-16 03:23:36,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:36,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-16 03:23:36,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:36,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 03:23:36,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:36,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 03:23:36,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-10-16 03:23:36,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391213708] [2020-10-16 03:23:36,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 03:23:36,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:36,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 03:23:36,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-16 03:23:36,577 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 265 [2020-10-16 03:23:36,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 265 transitions, 3541 flow. Second operand 8 states. [2020-10-16 03:23:36,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:36,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 265 [2020-10-16 03:23:36,579 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:36,932 INFO L129 PetriNetUnfolder]: 203/1851 cut-off events. [2020-10-16 03:23:36,932 INFO L130 PetriNetUnfolder]: For 11250/11303 co-relation queries the response was YES. [2020-10-16 03:23:36,946 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7904 conditions, 1851 events. 203/1851 cut-off events. For 11250/11303 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 14558 event pairs, 0 based on Foata normal form. 89/1940 useless extension candidates. Maximal degree in co-relation 7476. Up to 219 conditions per place. [2020-10-16 03:23:36,952 INFO L132 encePairwiseOnDemand]: 261/265 looper letters, 31 selfloop transitions, 13 changer transitions 6/282 dead transitions. [2020-10-16 03:23:36,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 282 transitions, 3730 flow [2020-10-16 03:23:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 03:23:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 03:23:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1795 transitions. [2020-10-16 03:23:36,955 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8466981132075472 [2020-10-16 03:23:36,955 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1795 transitions. [2020-10-16 03:23:36,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1795 transitions. [2020-10-16 03:23:36,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:36,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1795 transitions. [2020-10-16 03:23:36,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 03:23:36,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 03:23:36,960 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 03:23:36,960 INFO L185 Difference]: Start difference. First operand has 218 places, 265 transitions, 3541 flow. Second operand 8 states and 1795 transitions. [2020-10-16 03:23:36,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 282 transitions, 3730 flow [2020-10-16 03:23:37,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 282 transitions, 3683 flow, removed 20 selfloop flow, removed 2 redundant places. [2020-10-16 03:23:37,040 INFO L241 Difference]: Finished difference. Result has 224 places, 262 transitions, 3358 flow [2020-10-16 03:23:37,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3407, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3358, PETRI_PLACES=224, PETRI_TRANSITIONS=262} [2020-10-16 03:23:37,040 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 189 predicate places. [2020-10-16 03:23:37,040 INFO L481 AbstractCegarLoop]: Abstraction has has 224 places, 262 transitions, 3358 flow [2020-10-16 03:23:37,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 03:23:37,040 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:37,041 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:37,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-16 03:23:37,241 INFO L429 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:37,242 INFO L82 PathProgramCache]: Analyzing trace with hash 288849882, now seen corresponding path program 2 times [2020-10-16 03:23:37,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:37,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392882498] [2020-10-16 03:23:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:37,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392882498] [2020-10-16 03:23:37,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459312417] [2020-10-16 03:23:37,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:37,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 03:23:37,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:37,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 60 conjunts are in the unsatisfiable core [2020-10-16 03:23:37,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:38,146 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 03:23:38,147 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:38,176 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 03:23:38,178 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:23:38,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 03:23:38,511 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-10-16 03:23:38,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:23:38,688 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 03:23:38,689 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:38,715 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:38,716 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:23:38,716 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 03:23:39,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:23:39,236 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 03:23:39,260 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 03:23:39,607 INFO L545 ElimStorePlain]: Start of recursive call 2: 12 dim-0 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:39,624 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 03:23:39,637 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:39,717 INFO L625 ElimStorePlain]: treesize reduction 286, result has 14.6 percent of original size [2020-10-16 03:23:39,719 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:39,720 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:49 [2020-10-16 03:23:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 03:23:39,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:39,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 38 [2020-10-16 03:23:39,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385051004] [2020-10-16 03:23:39,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-16 03:23:39,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:39,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-16 03:23:39,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2020-10-16 03:23:39,844 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 03:23:39,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 262 transitions, 3358 flow. Second operand 39 states. [2020-10-16 03:23:39,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:39,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 03:23:39,847 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:41,552 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-10-16 03:23:41,765 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-16 03:23:42,415 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-16 03:23:43,467 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-10-16 03:23:43,793 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-16 03:23:44,146 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-16 03:23:44,365 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-16 03:23:44,719 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-16 03:23:45,530 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-16 03:23:45,989 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-16 03:23:46,629 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-16 03:23:46,900 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-16 03:23:47,177 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-16 03:23:49,111 INFO L129 PetriNetUnfolder]: 2710/7350 cut-off events. [2020-10-16 03:23:49,111 INFO L130 PetriNetUnfolder]: For 40545/40560 co-relation queries the response was YES. [2020-10-16 03:23:49,163 INFO L80 FinitePrefix]: Finished finitePrefix Result has 32965 conditions, 7350 events. 2710/7350 cut-off events. For 40545/40560 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 63423 event pairs, 146 based on Foata normal form. 34/7262 useless extension candidates. Maximal degree in co-relation 31657. Up to 1143 conditions per place. [2020-10-16 03:23:49,195 INFO L132 encePairwiseOnDemand]: 250/265 looper letters, 153 selfloop transitions, 265 changer transitions 6/446 dead transitions. [2020-10-16 03:23:49,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 446 transitions, 5668 flow [2020-10-16 03:23:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-16 03:23:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-16 03:23:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 5102 transitions. [2020-10-16 03:23:49,204 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.48132075471698116 [2020-10-16 03:23:49,204 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 5102 transitions. [2020-10-16 03:23:49,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 5102 transitions. [2020-10-16 03:23:49,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:49,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 5102 transitions. [2020-10-16 03:23:49,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 41 states. [2020-10-16 03:23:49,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 41 states. [2020-10-16 03:23:49,220 INFO L81 ComplementDD]: Finished complementDD. Result 41 states. [2020-10-16 03:23:49,220 INFO L185 Difference]: Start difference. First operand has 224 places, 262 transitions, 3358 flow. Second operand 40 states and 5102 transitions. [2020-10-16 03:23:49,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 446 transitions, 5668 flow [2020-10-16 03:23:49,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 446 transitions, 5655 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:23:49,432 INFO L241 Difference]: Finished difference. Result has 266 places, 326 transitions, 4880 flow [2020-10-16 03:23:49,433 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4880, PETRI_PLACES=266, PETRI_TRANSITIONS=326} [2020-10-16 03:23:49,433 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 231 predicate places. [2020-10-16 03:23:49,433 INFO L481 AbstractCegarLoop]: Abstraction has has 266 places, 326 transitions, 4880 flow [2020-10-16 03:23:49,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-16 03:23:49,433 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:49,434 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:49,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 03:23:49,647 INFO L429 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:49,647 INFO L82 PathProgramCache]: Analyzing trace with hash -600031886, now seen corresponding path program 4 times [2020-10-16 03:23:49,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:49,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181198445] [2020-10-16 03:23:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 03:23:49,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181198445] [2020-10-16 03:23:49,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550446933] [2020-10-16 03:23:49,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:49,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 03:23:49,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:49,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 03:23:49,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-16 03:23:49,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 03:23:49,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2020-10-16 03:23:49,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978483061] [2020-10-16 03:23:49,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 03:23:49,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 03:23:49,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-16 03:23:49,932 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 03:23:49,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 326 transitions, 4880 flow. Second operand 6 states. [2020-10-16 03:23:49,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:49,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 03:23:49,933 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:50,599 INFO L129 PetriNetUnfolder]: 280/2415 cut-off events. [2020-10-16 03:23:50,599 INFO L130 PetriNetUnfolder]: For 18015/18015 co-relation queries the response was YES. [2020-10-16 03:23:50,621 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12712 conditions, 2415 events. 280/2415 cut-off events. For 18015/18015 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 20048 event pairs, 16 based on Foata normal form. 5/2418 useless extension candidates. Maximal degree in co-relation 12167. Up to 309 conditions per place. [2020-10-16 03:23:50,634 INFO L132 encePairwiseOnDemand]: 257/265 looper letters, 100 selfloop transitions, 169 changer transitions 2/363 dead transitions. [2020-10-16 03:23:50,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 363 transitions, 5854 flow [2020-10-16 03:23:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 03:23:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 03:23:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1628 transitions. [2020-10-16 03:23:50,637 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7679245283018868 [2020-10-16 03:23:50,637 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1628 transitions. [2020-10-16 03:23:50,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1628 transitions. [2020-10-16 03:23:50,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:50,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1628 transitions. [2020-10-16 03:23:50,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 03:23:50,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 03:23:50,642 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 03:23:50,642 INFO L185 Difference]: Start difference. First operand has 266 places, 326 transitions, 4880 flow. Second operand 8 states and 1628 transitions. [2020-10-16 03:23:50,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 363 transitions, 5854 flow [2020-10-16 03:23:50,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 363 transitions, 5562 flow, removed 88 selfloop flow, removed 11 redundant places. [2020-10-16 03:23:50,795 INFO L241 Difference]: Finished difference. Result has 265 places, 337 transitions, 5219 flow [2020-10-16 03:23:50,796 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4529, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5219, PETRI_PLACES=265, PETRI_TRANSITIONS=337} [2020-10-16 03:23:50,796 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 230 predicate places. [2020-10-16 03:23:50,796 INFO L481 AbstractCegarLoop]: Abstraction has has 265 places, 337 transitions, 5219 flow [2020-10-16 03:23:50,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 03:23:50,797 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:50,797 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:51,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 03:23:51,000 INFO L429 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:51,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1665896900, now seen corresponding path program 5 times [2020-10-16 03:23:51,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:51,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945486153] [2020-10-16 03:23:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 03:23:51,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945486153] [2020-10-16 03:23:51,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401278786] [2020-10-16 03:23:51,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:51,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-16 03:23:51,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:51,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 03:23:51,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 03:23:51,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:51,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-16 03:23:51,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515513387] [2020-10-16 03:23:51,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 03:23:51,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:51,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 03:23:51,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 03:23:51,284 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 03:23:51,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 337 transitions, 5219 flow. Second operand 12 states. [2020-10-16 03:23:51,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:51,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 03:23:51,286 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:52,139 INFO L129 PetriNetUnfolder]: 282/2402 cut-off events. [2020-10-16 03:23:52,139 INFO L130 PetriNetUnfolder]: For 19521/19521 co-relation queries the response was YES. [2020-10-16 03:23:52,166 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12864 conditions, 2402 events. 282/2402 cut-off events. For 19521/19521 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 19928 event pairs, 3 based on Foata normal form. 1/2401 useless extension candidates. Maximal degree in co-relation 11749. Up to 317 conditions per place. [2020-10-16 03:23:52,176 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 203 selfloop transitions, 117 changer transitions 2/414 dead transitions. [2020-10-16 03:23:52,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 414 transitions, 6699 flow [2020-10-16 03:23:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 03:23:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 03:23:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2647 transitions. [2020-10-16 03:23:52,181 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7683599419448476 [2020-10-16 03:23:52,181 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2647 transitions. [2020-10-16 03:23:52,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2647 transitions. [2020-10-16 03:23:52,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:52,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2647 transitions. [2020-10-16 03:23:52,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 03:23:52,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 03:23:52,187 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 03:23:52,187 INFO L185 Difference]: Start difference. First operand has 265 places, 337 transitions, 5219 flow. Second operand 13 states and 2647 transitions. [2020-10-16 03:23:52,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 414 transitions, 6699 flow [2020-10-16 03:23:52,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 414 transitions, 6647 flow, removed 26 selfloop flow, removed 0 redundant places. [2020-10-16 03:23:52,347 INFO L241 Difference]: Finished difference. Result has 279 places, 342 transitions, 5559 flow [2020-10-16 03:23:52,347 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=5169, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5559, PETRI_PLACES=279, PETRI_TRANSITIONS=342} [2020-10-16 03:23:52,347 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 244 predicate places. [2020-10-16 03:23:52,348 INFO L481 AbstractCegarLoop]: Abstraction has has 279 places, 342 transitions, 5559 flow [2020-10-16 03:23:52,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 03:23:52,348 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:52,348 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:52,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:52,561 INFO L429 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:52,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1156227768, now seen corresponding path program 6 times [2020-10-16 03:23:52,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:52,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649963044] [2020-10-16 03:23:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 03:23:52,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649963044] [2020-10-16 03:23:52,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549706793] [2020-10-16 03:23:52,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:52,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-16 03:23:52,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:52,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-16 03:23:52,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 03:23:52,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:52,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2020-10-16 03:23:52,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609832617] [2020-10-16 03:23:52,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 03:23:52,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:52,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 03:23:52,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 03:23:52,849 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 03:23:52,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 342 transitions, 5559 flow. Second operand 12 states. [2020-10-16 03:23:52,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:52,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 03:23:52,850 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:53,740 INFO L129 PetriNetUnfolder]: 286/2427 cut-off events. [2020-10-16 03:23:53,740 INFO L130 PetriNetUnfolder]: For 21147/21147 co-relation queries the response was YES. [2020-10-16 03:23:53,758 INFO L80 FinitePrefix]: Finished finitePrefix Result has 13329 conditions, 2427 events. 286/2427 cut-off events. For 21147/21147 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 20184 event pairs, 3 based on Foata normal form. 1/2426 useless extension candidates. Maximal degree in co-relation 12192. Up to 574 conditions per place. [2020-10-16 03:23:53,767 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 220 selfloop transitions, 81 changer transitions 2/395 dead transitions. [2020-10-16 03:23:53,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 395 transitions, 6729 flow [2020-10-16 03:23:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 03:23:53,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-16 03:23:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2448 transitions. [2020-10-16 03:23:53,771 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.769811320754717 [2020-10-16 03:23:53,771 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2448 transitions. [2020-10-16 03:23:53,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2448 transitions. [2020-10-16 03:23:53,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:53,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2448 transitions. [2020-10-16 03:23:53,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-16 03:23:53,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-16 03:23:53,777 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-16 03:23:53,777 INFO L185 Difference]: Start difference. First operand has 279 places, 342 transitions, 5559 flow. Second operand 12 states and 2448 transitions. [2020-10-16 03:23:53,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 395 transitions, 6729 flow [2020-10-16 03:23:53,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 395 transitions, 6564 flow, removed 16 selfloop flow, removed 6 redundant places. [2020-10-16 03:23:53,941 INFO L241 Difference]: Finished difference. Result has 286 places, 346 transitions, 5687 flow [2020-10-16 03:23:53,941 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=5395, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5687, PETRI_PLACES=286, PETRI_TRANSITIONS=346} [2020-10-16 03:23:53,942 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 251 predicate places. [2020-10-16 03:23:53,942 INFO L481 AbstractCegarLoop]: Abstraction has has 286 places, 346 transitions, 5687 flow [2020-10-16 03:23:53,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 03:23:53,942 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:53,942 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:54,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:54,156 INFO L429 AbstractCegarLoop]: === Iteration 21 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:23:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:54,157 INFO L82 PathProgramCache]: Analyzing trace with hash 185392235, now seen corresponding path program 3 times [2020-10-16 03:23:54,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:54,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215642117] [2020-10-16 03:23:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:23:55,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215642117] [2020-10-16 03:23:55,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352197719] [2020-10-16 03:23:55,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:55,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 03:23:55,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:55,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 101 conjunts are in the unsatisfiable core [2020-10-16 03:23:55,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:55,882 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 03:23:55,882 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:55,919 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.9 percent of original size [2020-10-16 03:23:55,922 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:23:55,923 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:53 [2020-10-16 03:23:56,515 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:56,516 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 76 [2020-10-16 03:23:56,520 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:23:56,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:23:56,528 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:56,600 INFO L625 ElimStorePlain]: treesize reduction 37, result has 67.8 percent of original size [2020-10-16 03:23:56,603 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:56,606 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:56,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:56,615 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-16 03:23:56,616 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:73, output treesize:67 [2020-10-16 03:23:56,618 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:56,620 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:56,621 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:56,782 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:56,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:56,785 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:57,428 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-10-16 03:23:57,429 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 03:23:57,443 INFO L441 ElimStorePlain]: Different costs {0=[v_prenex_2], 2=[|v_#memory_int_100|]} [2020-10-16 03:23:57,451 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-16 03:23:57,451 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:57,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:57,521 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:57,522 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 77 [2020-10-16 03:23:57,523 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-16 03:23:57,524 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:57,620 INFO L625 ElimStorePlain]: treesize reduction 33, result has 77.7 percent of original size [2020-10-16 03:23:57,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:57,626 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-10-16 03:23:57,626 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:97, output treesize:92 [2020-10-16 03:23:57,627 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:57,713 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 03:23:57,872 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 03:23:58,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 03:23:58,146 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 03:23:58,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,440 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,553 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,556 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,687 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,689 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,820 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,822 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,822 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,944 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,947 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:58,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:59,908 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:59,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:59,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:23:59,929 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 03:23:59,931 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 03:23:59,932 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 29 [2020-10-16 03:23:59,935 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:59,948 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:59,949 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 48 [2020-10-16 03:23:59,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-16 03:23:59,953 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 03:24:00,080 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2020-10-16 03:24:00,080 INFO L625 ElimStorePlain]: treesize reduction 164, result has 23.4 percent of original size [2020-10-16 03:24:00,094 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-16 03:24:00,094 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:186, output treesize:83 [2020-10-16 03:24:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:24:02,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:24:02,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 50 [2020-10-16 03:24:02,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916815534] [2020-10-16 03:24:02,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-16 03:24:02,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:24:02,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-16 03:24:02,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=2383, Unknown=0, NotChecked=0, Total=2652 [2020-10-16 03:24:02,010 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 03:24:02,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 346 transitions, 5687 flow. Second operand 52 states. [2020-10-16 03:24:02,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:24:02,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 03:24:02,013 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:24:06,111 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-10-16 03:24:06,658 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-10-16 03:24:08,668 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-16 03:24:09,399 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-10-16 03:24:10,554 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-16 03:24:12,805 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-16 03:24:13,391 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-16 03:24:17,410 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-16 03:24:17,727 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-16 03:24:20,228 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-16 03:24:24,717 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2020-10-16 03:24:25,180 INFO L129 PetriNetUnfolder]: 2647/7591 cut-off events. [2020-10-16 03:24:25,181 INFO L130 PetriNetUnfolder]: For 60068/60075 co-relation queries the response was YES. [2020-10-16 03:24:25,242 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37949 conditions, 7591 events. 2647/7591 cut-off events. For 60068/60075 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 67322 event pairs, 206 based on Foata normal form. 235/7744 useless extension candidates. Maximal degree in co-relation 34941. Up to 1198 conditions per place. [2020-10-16 03:24:25,256 INFO L132 encePairwiseOnDemand]: 248/265 looper letters, 234 selfloop transitions, 237 changer transitions 113/605 dead transitions. [2020-10-16 03:24:25,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 605 transitions, 8665 flow [2020-10-16 03:24:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-16 03:24:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-16 03:24:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 6654 transitions. [2020-10-16 03:24:25,265 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.48287373004354134 [2020-10-16 03:24:25,265 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 6654 transitions. [2020-10-16 03:24:25,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 6654 transitions. [2020-10-16 03:24:25,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:24:25,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 6654 transitions. [2020-10-16 03:24:25,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 53 states. [2020-10-16 03:24:25,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 53 states. [2020-10-16 03:24:25,281 INFO L81 ComplementDD]: Finished complementDD. Result 53 states. [2020-10-16 03:24:25,281 INFO L185 Difference]: Start difference. First operand has 286 places, 346 transitions, 5687 flow. Second operand 52 states and 6654 transitions. [2020-10-16 03:24:25,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 605 transitions, 8665 flow [2020-10-16 03:24:25,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 605 transitions, 8337 flow, removed 52 selfloop flow, removed 14 redundant places. [2020-10-16 03:24:25,529 INFO L241 Difference]: Finished difference. Result has 357 places, 377 transitions, 6594 flow [2020-10-16 03:24:25,530 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=6594, PETRI_PLACES=357, PETRI_TRANSITIONS=377} [2020-10-16 03:24:25,530 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 322 predicate places. [2020-10-16 03:24:25,530 INFO L481 AbstractCegarLoop]: Abstraction has has 357 places, 377 transitions, 6594 flow [2020-10-16 03:24:25,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-16 03:24:25,531 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:24:25,531 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:24:25,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:24:25,745 INFO L429 AbstractCegarLoop]: === Iteration 22 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:24:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:24:25,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1338264591, now seen corresponding path program 7 times [2020-10-16 03:24:25,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:24:25,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558653287] [2020-10-16 03:24:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:24:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:24:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 03:24:25,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558653287] [2020-10-16 03:24:25,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878004132] [2020-10-16 03:24:25,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:24:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:24:26,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-16 03:24:26,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:24:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 03:24:26,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:24:26,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-10-16 03:24:26,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205082296] [2020-10-16 03:24:26,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 03:24:26,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:24:26,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 03:24:26,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 03:24:26,066 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 265 [2020-10-16 03:24:26,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 377 transitions, 6594 flow. Second operand 15 states. [2020-10-16 03:24:26,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:24:26,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 265 [2020-10-16 03:24:26,067 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:24:27,027 INFO L129 PetriNetUnfolder]: 194/2413 cut-off events. [2020-10-16 03:24:27,027 INFO L130 PetriNetUnfolder]: For 25316/25316 co-relation queries the response was YES. [2020-10-16 03:24:27,053 INFO L80 FinitePrefix]: Finished finitePrefix Result has 14640 conditions, 2413 events. 194/2413 cut-off events. For 25316/25316 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 20458 event pairs, 3 based on Foata normal form. 2/2413 useless extension candidates. Maximal degree in co-relation 14500. Up to 317 conditions per place. [2020-10-16 03:24:27,059 INFO L132 encePairwiseOnDemand]: 258/265 looper letters, 120 selfloop transitions, 72 changer transitions 192/467 dead transitions. [2020-10-16 03:24:27,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 467 transitions, 8622 flow [2020-10-16 03:24:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 03:24:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-16 03:24:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3451 transitions. [2020-10-16 03:24:27,064 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7660377358490567 [2020-10-16 03:24:27,064 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3451 transitions. [2020-10-16 03:24:27,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3451 transitions. [2020-10-16 03:24:27,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:24:27,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3451 transitions. [2020-10-16 03:24:27,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-16 03:24:27,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-16 03:24:27,071 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-16 03:24:27,071 INFO L185 Difference]: Start difference. First operand has 357 places, 377 transitions, 6594 flow. Second operand 17 states and 3451 transitions. [2020-10-16 03:24:27,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 467 transitions, 8622 flow [2020-10-16 03:24:27,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 467 transitions, 7770 flow, removed 159 selfloop flow, removed 27 redundant places. [2020-10-16 03:24:27,397 INFO L241 Difference]: Finished difference. Result has 337 places, 228 transitions, 3441 flow [2020-10-16 03:24:27,398 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=5815, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3441, PETRI_PLACES=337, PETRI_TRANSITIONS=228} [2020-10-16 03:24:27,398 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 302 predicate places. [2020-10-16 03:24:27,398 INFO L481 AbstractCegarLoop]: Abstraction has has 337 places, 228 transitions, 3441 flow [2020-10-16 03:24:27,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 03:24:27,398 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:24:27,398 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:24:27,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-16 03:24:27,599 INFO L429 AbstractCegarLoop]: === Iteration 23 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:24:27,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:24:27,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1634728654, now seen corresponding path program 4 times [2020-10-16 03:24:27,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:24:27,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975963984] [2020-10-16 03:24:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:24:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:24:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:24:28,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975963984] [2020-10-16 03:24:28,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266860826] [2020-10-16 03:24:28,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:24:29,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 03:24:29,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:24:29,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 77 conjunts are in the unsatisfiable core [2020-10-16 03:24:29,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:24:29,330 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 03:24:29,330 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:24:29,368 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 03:24:29,369 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:24:29,370 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 03:24:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:24:29,986 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 03:24:29,987 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:24:30,024 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:24:30,025 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:24:30,025 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 03:24:30,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:24:30,577 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 03:24:30,578 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:24:30,611 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:24:30,613 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:24:30,613 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 03:24:31,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:24:31,618 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 03:24:31,637 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-16 03:24:31,655 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 03:24:31,666 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:24:37,953 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification. DAG size of input: 64 DAG size of output: 30 [2020-10-16 03:24:37,954 INFO L625 ElimStorePlain]: treesize reduction 106, result has 38.0 percent of original size [2020-10-16 03:24:37,956 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:24:37,956 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:65 [2020-10-16 03:24:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 22 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 03:24:38,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:24:38,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 50 [2020-10-16 03:24:38,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216952583] [2020-10-16 03:24:38,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-16 03:24:38,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:24:38,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-16 03:24:38,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2383, Unknown=0, NotChecked=0, Total=2550 [2020-10-16 03:24:38,179 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 03:24:38,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 228 transitions, 3441 flow. Second operand 51 states. [2020-10-16 03:24:38,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:24:38,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 03:24:38,181 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:24:40,412 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-10-16 03:24:40,723 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-10-16 03:24:41,162 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-16 03:24:41,371 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-16 03:24:41,979 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-16 03:24:43,855 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2020-10-16 03:24:44,433 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2020-10-16 03:24:45,005 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-16 03:24:45,353 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-16 03:24:45,706 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-16 03:24:46,134 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-16 03:24:47,535 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-16 03:24:48,408 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-16 03:24:48,932 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2020-10-16 03:24:49,576 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-10-16 03:24:50,148 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-16 03:24:50,508 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-10-16 03:24:51,119 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-16 03:24:51,446 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-16 03:24:51,846 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-16 03:24:52,237 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-16 03:24:52,788 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-16 03:24:53,091 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-16 03:24:53,753 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-16 03:24:54,850 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2020-10-16 03:24:55,343 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2020-10-16 03:24:55,797 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-16 03:24:56,847 INFO L129 PetriNetUnfolder]: 926/2668 cut-off events. [2020-10-16 03:24:56,847 INFO L130 PetriNetUnfolder]: For 17319/17321 co-relation queries the response was YES. [2020-10-16 03:24:56,870 INFO L80 FinitePrefix]: Finished finitePrefix Result has 13741 conditions, 2668 events. 926/2668 cut-off events. For 17319/17321 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 18711 event pairs, 44 based on Foata normal form. 10/2639 useless extension candidates. Maximal degree in co-relation 13574. Up to 440 conditions per place. [2020-10-16 03:24:56,878 INFO L132 encePairwiseOnDemand]: 251/265 looper letters, 134 selfloop transitions, 214 changer transitions 32/399 dead transitions. [2020-10-16 03:24:56,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 399 transitions, 5047 flow [2020-10-16 03:24:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-16 03:24:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 03:24:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 6874 transitions. [2020-10-16 03:24:56,888 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4803633822501747 [2020-10-16 03:24:56,889 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 6874 transitions. [2020-10-16 03:24:56,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 6874 transitions. [2020-10-16 03:24:56,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:24:56,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 6874 transitions. [2020-10-16 03:24:56,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 55 states. [2020-10-16 03:24:56,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 55 states. [2020-10-16 03:24:56,905 INFO L81 ComplementDD]: Finished complementDD. Result 55 states. [2020-10-16 03:24:56,905 INFO L185 Difference]: Start difference. First operand has 337 places, 228 transitions, 3441 flow. Second operand 54 states and 6874 transitions. [2020-10-16 03:24:56,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 399 transitions, 5047 flow [2020-10-16 03:24:57,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 399 transitions, 4318 flow, removed 113 selfloop flow, removed 82 redundant places. [2020-10-16 03:24:57,018 INFO L241 Difference]: Finished difference. Result has 302 places, 261 transitions, 3699 flow [2020-10-16 03:24:57,019 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2804, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3699, PETRI_PLACES=302, PETRI_TRANSITIONS=261} [2020-10-16 03:24:57,019 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 267 predicate places. [2020-10-16 03:24:57,019 INFO L481 AbstractCegarLoop]: Abstraction has has 302 places, 261 transitions, 3699 flow [2020-10-16 03:24:57,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-16 03:24:57,019 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:24:57,019 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:24:57,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 03:24:57,220 INFO L429 AbstractCegarLoop]: === Iteration 24 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:24:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:24:57,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1141164033, now seen corresponding path program 5 times [2020-10-16 03:24:57,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:24:57,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071852631] [2020-10-16 03:24:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:24:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:24:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:24:59,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071852631] [2020-10-16 03:24:59,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180267415] [2020-10-16 03:24:59,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:24:59,610 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 03:24:59,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:24:59,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 94 conjunts are in the unsatisfiable core [2020-10-16 03:24:59,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:24:59,949 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-16 03:24:59,949 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:24:59,992 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 03:24:59,993 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:24:59,993 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 03:25:00,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:25:00,885 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 03:25:00,885 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:25:00,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:25:00,922 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:25:00,922 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 03:25:01,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:25:01,715 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 03:25:01,716 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:25:01,748 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:25:01,749 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:25:01,750 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 03:25:02,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:25:02,595 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-16 03:25:02,596 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:25:02,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:25:02,628 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:25:02,629 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 03:25:04,230 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:25:04,241 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-16 03:25:04,248 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:25:04,255 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-16 03:25:04,265 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:25:04,388 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2020-10-16 03:25:04,389 INFO L625 ElimStorePlain]: treesize reduction 80, result has 39.8 percent of original size [2020-10-16 03:25:04,391 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:25:04,391 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:53 [2020-10-16 03:25:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:25:04,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:25:04,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 60 [2020-10-16 03:25:04,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376494732] [2020-10-16 03:25:04,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-16 03:25:04,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:25:04,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-16 03:25:04,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3472, Unknown=0, NotChecked=0, Total=3660 [2020-10-16 03:25:04,642 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 03:25:04,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 261 transitions, 3699 flow. Second operand 61 states. [2020-10-16 03:25:04,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:25:04,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 03:25:04,646 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:25:06,133 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-16 03:25:07,248 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-10-16 03:25:07,933 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-10-16 03:25:08,794 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-16 03:25:09,134 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-16 03:25:09,800 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-16 03:25:10,160 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-16 03:25:10,710 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-16 03:25:11,232 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-16 03:25:11,637 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-16 03:25:12,386 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-16 03:25:13,006 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-16 03:25:14,020 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-16 03:25:15,551 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-16 03:25:16,178 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-16 03:25:17,046 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-16 03:25:18,132 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-16 03:25:18,399 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-16 03:25:19,464 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-16 03:25:20,257 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-16 03:25:21,183 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-16 03:25:21,483 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-16 03:25:22,764 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-10-16 03:25:23,806 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-16 03:25:25,317 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-16 03:25:25,876 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-16 03:25:26,137 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-16 03:25:27,919 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2020-10-16 03:25:29,004 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-16 03:25:30,168 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-16 03:25:31,801 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2020-10-16 03:25:32,725 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-16 03:25:33,233 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-16 03:25:34,769 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-16 03:25:35,735 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-16 03:25:36,780 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-16 03:25:38,222 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-16 03:25:39,311 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-16 03:25:40,153 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-16 03:25:42,426 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-10-16 03:25:43,830 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-16 03:25:45,737 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-16 03:25:46,654 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-16 03:25:47,251 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-16 03:25:50,267 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-16 03:25:51,741 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-16 03:25:53,239 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 03:25:55,046 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-16 03:25:56,978 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2020-10-16 03:25:58,393 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-16 03:25:59,349 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-16 03:26:01,576 WARN L193 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-16 03:26:03,067 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-16 03:26:05,552 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-16 03:26:07,424 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-16 03:26:09,177 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-16 03:26:11,699 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-10-16 03:26:14,052 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 03:26:14,993 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-16 03:26:16,530 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-16 03:26:18,652 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-16 03:26:21,289 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-16 03:26:23,138 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-10-16 03:26:24,614 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-16 03:26:27,232 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 122 DAG size of output: 96 [2020-10-16 03:26:28,700 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-16 03:26:30,945 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-10-16 03:26:33,236 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-16 03:26:36,438 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2020-10-16 03:26:39,497 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2020-10-16 03:26:41,455 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-16 03:26:43,951 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-16 03:26:46,315 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-16 03:26:48,379 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-10-16 03:26:49,620 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-16 03:26:51,198 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-16 03:26:53,404 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-16 03:26:54,545 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-16 03:26:55,764 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-16 03:26:57,394 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-16 03:26:58,812 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-16 03:26:59,753 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-16 03:27:01,077 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-16 03:27:02,356 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-16 03:27:03,242 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-16 03:27:04,404 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-16 03:27:04,858 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-16 03:27:05,570 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-16 03:27:06,243 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-16 03:27:06,717 INFO L129 PetriNetUnfolder]: 997/2943 cut-off events. [2020-10-16 03:27:06,717 INFO L130 PetriNetUnfolder]: For 13188/13190 co-relation queries the response was YES. [2020-10-16 03:27:06,734 INFO L80 FinitePrefix]: Finished finitePrefix Result has 14447 conditions, 2943 events. 997/2943 cut-off events. For 13188/13190 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 21122 event pairs, 66 based on Foata normal form. 24/2916 useless extension candidates. Maximal degree in co-relation 13542. Up to 489 conditions per place. [2020-10-16 03:27:06,740 INFO L132 encePairwiseOnDemand]: 250/265 looper letters, 138 selfloop transitions, 97 changer transitions 329/583 dead transitions. [2020-10-16 03:27:06,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 583 transitions, 6524 flow [2020-10-16 03:27:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-10-16 03:27:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-16 03:27:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 12588 transitions. [2020-10-16 03:27:06,759 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.47981703830760436 [2020-10-16 03:27:06,759 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 12588 transitions. [2020-10-16 03:27:06,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 12588 transitions. [2020-10-16 03:27:06,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:06,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 12588 transitions. [2020-10-16 03:27:06,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 100 states. [2020-10-16 03:27:06,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 100 states. [2020-10-16 03:27:06,787 INFO L81 ComplementDD]: Finished complementDD. Result 100 states. [2020-10-16 03:27:06,787 INFO L185 Difference]: Start difference. First operand has 302 places, 261 transitions, 3699 flow. Second operand 99 states and 12588 transitions. [2020-10-16 03:27:06,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 583 transitions, 6524 flow [2020-10-16 03:27:06,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 583 transitions, 6050 flow, removed 96 selfloop flow, removed 28 redundant places. [2020-10-16 03:27:06,887 INFO L241 Difference]: Finished difference. Result has 382 places, 140 transitions, 1628 flow [2020-10-16 03:27:06,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=1628, PETRI_PLACES=382, PETRI_TRANSITIONS=140} [2020-10-16 03:27:06,888 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 347 predicate places. [2020-10-16 03:27:06,888 INFO L481 AbstractCegarLoop]: Abstraction has has 382 places, 140 transitions, 1628 flow [2020-10-16 03:27:06,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-16 03:27:06,889 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:06,889 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:07,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-16 03:27:07,105 INFO L429 AbstractCegarLoop]: === Iteration 25 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:07,105 INFO L82 PathProgramCache]: Analyzing trace with hash -247179633, now seen corresponding path program 6 times [2020-10-16 03:27:07,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:07,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033700672] [2020-10-16 03:27:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:07,676 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2020-10-16 03:27:08,337 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2020-10-16 03:27:08,994 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-10-16 03:27:09,710 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-10-16 03:27:10,522 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-10-16 03:27:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:12,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033700672] [2020-10-16 03:27:12,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120574514] [2020-10-16 03:27:12,426 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:27:12,686 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-16 03:27:12,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:27:12,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 119 conjunts are in the unsatisfiable core [2020-10-16 03:27:12,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:27:12,741 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-16 03:27:12,741 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:27:12,769 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:27:12,770 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:27:12,770 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:21 [2020-10-16 03:27:13,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:27:13,418 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2020-10-16 03:27:13,419 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:27:13,468 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:27:13,471 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:27:13,471 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:26 [2020-10-16 03:27:14,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:27:14,139 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2020-10-16 03:27:14,140 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:27:14,184 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:27:14,187 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:27:14,187 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:24 [2020-10-16 03:27:14,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:27:14,800 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2020-10-16 03:27:14,800 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:27:14,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:27:14,849 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:27:14,850 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:24 [2020-10-16 03:27:15,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:27:15,550 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2020-10-16 03:27:15,551 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:27:15,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:27:15,599 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-16 03:27:15,600 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:26 [2020-10-16 03:27:16,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 03:27:16,257 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 03:27:16,260 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 03:27:16,262 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2020-10-16 03:27:16,268 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:27:16,335 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-16 03:27:16,342 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:27:16,342 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 23 [2020-10-16 03:27:16,344 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 03:27:16,479 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 21 [2020-10-16 03:27:16,480 INFO L625 ElimStorePlain]: treesize reduction 42, result has 52.8 percent of original size [2020-10-16 03:27:16,484 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-16 03:27:16,484 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:90, output treesize:41 [2020-10-16 03:27:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:16,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:27:16,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 50 [2020-10-16 03:27:16,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739996130] [2020-10-16 03:27:16,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-16 03:27:16,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:16,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-16 03:27:16,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2504, Unknown=0, NotChecked=0, Total=2652 [2020-10-16 03:27:16,734 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2020-10-16 03:27:16,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 140 transitions, 1628 flow. Second operand 52 states. [2020-10-16 03:27:16,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:16,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2020-10-16 03:27:16,737 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:20,138 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2020-10-16 03:27:20,842 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-10-16 03:27:22,370 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-10-16 03:27:23,036 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-10-16 03:27:24,485 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-10-16 03:27:25,126 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-10-16 03:27:25,433 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2020-10-16 03:27:26,545 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2020-10-16 03:27:27,178 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-10-16 03:27:31,143 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-10-16 03:27:31,865 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-10-16 03:27:32,418 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-16 03:27:32,730 INFO L129 PetriNetUnfolder]: 299/918 cut-off events. [2020-10-16 03:27:32,730 INFO L130 PetriNetUnfolder]: For 3664/3664 co-relation queries the response was YES. [2020-10-16 03:27:32,737 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 918 events. 299/918 cut-off events. For 3664/3664 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4661 event pairs, 15 based on Foata normal form. 6/912 useless extension candidates. Maximal degree in co-relation 4230. Up to 125 conditions per place. [2020-10-16 03:27:32,739 INFO L132 encePairwiseOnDemand]: 251/265 looper letters, 0 selfloop transitions, 0 changer transitions 251/251 dead transitions. [2020-10-16 03:27:32,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 251 transitions, 2415 flow [2020-10-16 03:27:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 03:27:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-16 03:27:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4739 transitions. [2020-10-16 03:27:32,747 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.4833248342682305 [2020-10-16 03:27:32,747 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4739 transitions. [2020-10-16 03:27:32,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4739 transitions. [2020-10-16 03:27:32,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:32,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4739 transitions. [2020-10-16 03:27:32,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 38 states. [2020-10-16 03:27:32,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 38 states. [2020-10-16 03:27:32,756 INFO L81 ComplementDD]: Finished complementDD. Result 38 states. [2020-10-16 03:27:32,756 INFO L185 Difference]: Start difference. First operand has 382 places, 140 transitions, 1628 flow. Second operand 37 states and 4739 transitions. [2020-10-16 03:27:32,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 251 transitions, 2415 flow [2020-10-16 03:27:32,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 251 transitions, 1604 flow, removed 143 selfloop flow, removed 118 redundant places. [2020-10-16 03:27:32,784 INFO L241 Difference]: Finished difference. Result has 181 places, 0 transitions, 0 flow [2020-10-16 03:27:32,784 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=0, PETRI_PLACES=181, PETRI_TRANSITIONS=0} [2020-10-16 03:27:32,784 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 146 predicate places. [2020-10-16 03:27:32,785 INFO L481 AbstractCegarLoop]: Abstraction has has 181 places, 0 transitions, 0 flow [2020-10-16 03:27:32,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-16 03:27:32,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 03:27:33,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:27:33 BasicIcfg [2020-10-16 03:27:33,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 03:27:33,002 INFO L168 Benchmark]: Toolchain (without parser) took 283086.57 ms. Allocated memory was 252.7 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 207.6 MB in the beginning and 754.6 MB in the end (delta: -547.0 MB). Peak memory consumption was 944.6 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:33,002 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 03:27:33,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 925.09 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 207.6 MB in the beginning and 245.8 MB in the end (delta: -38.1 MB). Peak memory consumption was 37.9 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:33,002 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.00 ms. Allocated memory is still 318.2 MB. Free memory was 245.8 MB in the beginning and 243.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:33,003 INFO L168 Benchmark]: Boogie Preprocessor took 63.47 ms. Allocated memory is still 318.2 MB. Free memory was 243.3 MB in the beginning and 240.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:33,003 INFO L168 Benchmark]: RCFGBuilder took 573.92 ms. Allocated memory is still 318.2 MB. Free memory was 240.7 MB in the beginning and 208.8 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:33,003 INFO L168 Benchmark]: TraceAbstraction took 281408.60 ms. Allocated memory was 318.2 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 208.8 MB in the beginning and 754.6 MB in the end (delta: -545.8 MB). Peak memory consumption was 880.3 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:33,009 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 925.09 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 207.6 MB in the beginning and 245.8 MB in the end (delta: -38.1 MB). Peak memory consumption was 37.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 109.00 ms. Allocated memory is still 318.2 MB. Free memory was 245.8 MB in the beginning and 243.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 63.47 ms. Allocated memory is still 318.2 MB. Free memory was 243.3 MB in the beginning and 240.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 573.92 ms. Allocated memory is still 318.2 MB. Free memory was 240.7 MB in the beginning and 208.8 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 281408.60 ms. Allocated memory was 318.2 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 208.8 MB in the beginning and 754.6 MB in the end (delta: -545.8 MB). Peak memory consumption was 880.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4253 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 64 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 340 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 126 PlacesBefore, 35 PlacesAfterwards, 130 TransitionsBefore, 34 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 123 TotalNumberOfCompositions, 9738 MoverChecksTotal - PositiveResult [Line: 922]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 922]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 131 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 281.2s, OverallIterations: 25, TraceHistogramMax: 6, AutomataDifference: 218.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 241 SDtfs, 3285 SDslu, 1849 SDs, 0 SdLazy, 26479 SolverSat, 1420 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1652 GetRequests, 767 SyntacticMatches, 24 SemanticMatches, 861 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18466 ImplicationChecksByTransitivity, 178.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6594occurred in iteration=21, 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: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 50.1s InterpolantComputationTime, 1712 NumberOfCodeBlocks, 1681 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 1667 ConstructedInterpolants, 83 QuantifiedInterpolants, 1418273 SizeOfPredicates, 363 NumberOfNonLiveVariables, 5681 ConjunctsInSsa, 723 ConjunctsInUnsatCore, 45 InterpolantComputations, 9 PerfectInterpolantSequences, 410/1782 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...