/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_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 03:23:32,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 03:23:32,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 03:23:32,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 03:23:32,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 03:23:32,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 03:23:32,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 03:23:32,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 03:23:32,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 03:23:32,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 03:23:32,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 03:23:32,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 03:23:32,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 03:23:32,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 03:23:32,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 03:23:32,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 03:23:32,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 03:23:32,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 03:23:32,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 03:23:32,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 03:23:32,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 03:23:32,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 03:23:32,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 03:23:32,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 03:23:32,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 03:23:32,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 03:23:32,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 03:23:32,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 03:23:32,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 03:23:32,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 03:23:32,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 03:23:32,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 03:23:32,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 03:23:32,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 03:23:32,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 03:23:32,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 03:23:32,149 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 03:23:32,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 03:23:32,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 03:23:32,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 03:23:32,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 03:23:32,173 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 03:23:32,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 03:23:32,173 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 03:23:32,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 03:23:32,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 03:23:32,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 03:23:32,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 03:23:32,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 03:23:32,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 03:23:32,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 03:23:32,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 03:23:32,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 03:23:32,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 03:23:32,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 03:23:32,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 03:23:32,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 03:23:32,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 03:23:32,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:23:32,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 03:23:32,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 03:23:32,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 03:23:32,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 03:23:32,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 03:23:32,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 03:23:32,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 03:23:32,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 03:23:32,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 03:23:32,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 03:23:32,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 03:23:32,495 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 03:23:32,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2020-10-16 03:23:32,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee018929/06dc4844073c4b4990defaeb678a2142/FLAGcfda2ad90 [2020-10-16 03:23:33,214 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 03:23:33,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2020-10-16 03:23:33,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee018929/06dc4844073c4b4990defaeb678a2142/FLAGcfda2ad90 [2020-10-16 03:23:33,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ee018929/06dc4844073c4b4990defaeb678a2142 [2020-10-16 03:23:33,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 03:23:33,504 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 03:23:33,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 03:23:33,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 03:23:33,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 03:23:33,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:23:33" (1/1) ... [2020-10-16 03:23:33,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118119d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:33, skipping insertion in model container [2020-10-16 03:23:33,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:23:33" (1/1) ... [2020-10-16 03:23:33,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 03:23:33,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 03:23:34,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:23:34,226 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 03:23:34,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:23:34,434 INFO L208 MainTranslator]: Completed translation [2020-10-16 03:23:34,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34 WrapperNode [2020-10-16 03:23:34,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 03:23:34,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 03:23:34,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 03:23:34,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 03:23:34,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (1/1) ... [2020-10-16 03:23:34,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (1/1) ... [2020-10-16 03:23:34,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 03:23:34,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 03:23:34,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 03:23:34,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 03:23:34,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (1/1) ... [2020-10-16 03:23:34,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (1/1) ... [2020-10-16 03:23:34,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (1/1) ... [2020-10-16 03:23:34,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (1/1) ... [2020-10-16 03:23:34,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (1/1) ... [2020-10-16 03:23:34,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (1/1) ... [2020-10-16 03:23:34,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (1/1) ... [2020-10-16 03:23:34,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 03:23:34,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 03:23:34,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 03:23:34,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 03:23:34,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (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 03:23:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-16 03:23:34,606 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-16 03:23:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-16 03:23:34,606 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-16 03:23:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 03:23:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 03:23:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 03:23:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 03:23:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 03:23:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 03:23:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 03:23:34,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 03:23:34,610 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 03:23:35,123 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 03:23:35,124 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-16 03:23:35,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:23:35 BoogieIcfgContainer [2020-10-16 03:23:35,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 03:23:35,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 03:23:35,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 03:23:35,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 03:23:35,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:23:33" (1/3) ... [2020-10-16 03:23:35,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cda97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:23:35, skipping insertion in model container [2020-10-16 03:23:35,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:23:34" (2/3) ... [2020-10-16 03:23:35,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cda97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:23:35, skipping insertion in model container [2020-10-16 03:23:35,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:23:35" (3/3) ... [2020-10-16 03:23:35,141 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2020-10-16 03:23:35,154 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 03:23:35,163 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 03:23:35,164 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 03:23:35,231 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,231 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,231 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,232 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,232 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,232 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,232 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,233 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,233 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,233 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,234 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,234 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,234 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,234 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,235 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,235 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,235 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,235 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,236 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,236 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,236 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,236 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,237 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,237 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,237 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,237 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,238 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,238 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,238 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,238 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,239 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,239 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,239 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,239 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,239 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,240 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,240 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,241 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,241 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,241 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,242 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,242 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,242 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,242 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,243 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,243 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,243 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,243 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,244 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,244 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,244 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,244 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,245 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,245 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,245 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,245 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,246 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,246 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,246 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,247 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,247 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,247 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,247 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,248 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,248 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,248 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,249 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,250 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,250 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,250 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,250 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,251 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,251 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,251 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,251 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,251 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,252 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,252 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,252 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,253 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,253 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,253 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,253 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,254 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,254 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,254 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,254 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,254 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,255 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,255 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,255 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,255 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,255 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,256 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,256 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,256 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,257 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,257 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,257 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,258 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,258 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,258 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,258 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,259 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,259 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,259 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,259 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,260 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,260 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,260 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,260 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,261 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,261 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,261 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,261 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,262 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,262 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,262 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,262 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,263 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,263 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,267 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,267 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,267 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,267 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,268 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,268 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,268 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,268 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,269 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,269 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,269 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,269 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,269 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,270 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,270 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,270 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,270 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,271 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,271 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,271 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,271 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,271 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,272 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,278 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,278 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,278 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,279 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,279 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,279 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,279 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,280 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,280 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,280 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,280 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,281 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,281 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,281 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,281 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,282 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,282 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,282 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:23:35,307 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 03:23:35,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 03:23:35,330 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 03:23:35,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 03:23:35,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 03:23:35,331 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 03:23:35,331 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 03:23:35,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 03:23:35,331 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 03:23:35,348 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 298 flow [2020-10-16 03:23:35,422 INFO L129 PetriNetUnfolder]: 11/138 cut-off events. [2020-10-16 03:23:35,423 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:23:35,431 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 11/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 342 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-16 03:23:35,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 138 transitions, 298 flow [2020-10-16 03:23:35,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 126 transitions, 264 flow [2020-10-16 03:23:35,443 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 03:23:35,445 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 126 transitions, 264 flow [2020-10-16 03:23:35,448 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 126 transitions, 264 flow [2020-10-16 03:23:35,449 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 122 places, 126 transitions, 264 flow [2020-10-16 03:23:35,513 INFO L129 PetriNetUnfolder]: 10/128 cut-off events. [2020-10-16 03:23:35,513 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:23:35,518 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 128 events. 10/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 278 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-16 03:23:35,527 INFO L117 LiptonReduction]: Number of co-enabled transitions 5744 [2020-10-16 03:23:37,115 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-16 03:23:37,653 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-16 03:23:38,527 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-10-16 03:23:38,686 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-16 03:23:38,996 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-16 03:23:39,197 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-16 03:23:39,245 INFO L132 LiptonReduction]: Checked pairs total: 9349 [2020-10-16 03:23:39,246 INFO L134 LiptonReduction]: Total number of compositions: 118 [2020-10-16 03:23:39,249 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3808 [2020-10-16 03:23:39,257 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2020-10-16 03:23:39,257 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 03:23:39,257 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:39,258 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 03:23:39,259 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 03:23:39,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:39,265 INFO L82 PathProgramCache]: Analyzing trace with hash -461369305, now seen corresponding path program 1 times [2020-10-16 03:23:39,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:39,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966859147] [2020-10-16 03:23:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:39,491 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 03:23:39,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966859147] [2020-10-16 03:23:39,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:23:39,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:23:39,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421170181] [2020-10-16 03:23:39,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:23:39,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:39,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:23:39,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:23:39,523 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 256 [2020-10-16 03:23:39,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states. [2020-10-16 03:23:39,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:39,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 256 [2020-10-16 03:23:39,527 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:39,617 INFO L129 PetriNetUnfolder]: 54/170 cut-off events. [2020-10-16 03:23:39,618 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2020-10-16 03:23:39,619 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 03:23:39,622 INFO L132 encePairwiseOnDemand]: 251/256 looper letters, 15 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2020-10-16 03:23:39,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 126 flow [2020-10-16 03:23:39,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:23:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:23:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2020-10-16 03:23:39,642 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2020-10-16 03:23:39,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2020-10-16 03:23:39,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2020-10-16 03:23:39,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:39,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2020-10-16 03:23:39,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:23:39,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:23:39,672 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:23:39,674 INFO L185 Difference]: Start difference. First operand has 35 places, 34 transitions, 80 flow. Second operand 3 states and 608 transitions. [2020-10-16 03:23:39,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 126 flow [2020-10-16 03:23:39,679 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 03:23:39,681 INFO L241 Difference]: Finished difference. Result has 34 places, 35 transitions, 89 flow [2020-10-16 03:23:39,684 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, 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 03:23:39,686 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2020-10-16 03:23:39,686 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 89 flow [2020-10-16 03:23:39,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:23:39,686 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:39,686 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:39,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 03:23:39,687 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 03:23:39,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:39,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1604352594, now seen corresponding path program 1 times [2020-10-16 03:23:39,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:39,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758786234] [2020-10-16 03:23:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:39,790 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 03:23:39,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758786234] [2020-10-16 03:23:39,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:23:39,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:23:39,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88411641] [2020-10-16 03:23:39,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:23:39,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:39,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:23:39,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:23:39,798 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 256 [2020-10-16 03:23:39,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 89 flow. Second operand 3 states. [2020-10-16 03:23:39,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:39,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 256 [2020-10-16 03:23:39,800 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:39,839 INFO L129 PetriNetUnfolder]: 12/93 cut-off events. [2020-10-16 03:23:39,839 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2020-10-16 03:23:39,840 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 264 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 03:23:39,841 INFO L132 encePairwiseOnDemand]: 253/256 looper letters, 4 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2020-10-16 03:23:39,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 105 flow [2020-10-16 03:23:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:23:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:23:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2020-10-16 03:23:39,849 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8606770833333334 [2020-10-16 03:23:39,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2020-10-16 03:23:39,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2020-10-16 03:23:39,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:39,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2020-10-16 03:23:39,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:23:39,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:23:39,855 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:23:39,855 INFO L185 Difference]: Start difference. First operand has 34 places, 35 transitions, 89 flow. Second operand 3 states and 661 transitions. [2020-10-16 03:23:39,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 105 flow [2020-10-16 03:23:39,856 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 03:23:39,858 INFO L241 Difference]: Finished difference. Result has 36 places, 36 transitions, 101 flow [2020-10-16 03:23:39,858 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, 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 03:23:39,859 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2020-10-16 03:23:39,859 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 101 flow [2020-10-16 03:23:39,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:23:39,859 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:39,859 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:39,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 03:23:39,860 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 03:23:39,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:39,860 INFO L82 PathProgramCache]: Analyzing trace with hash 873993597, now seen corresponding path program 1 times [2020-10-16 03:23:39,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:39,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412550686] [2020-10-16 03:23:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:40,011 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 03:23:40,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412550686] [2020-10-16 03:23:40,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920583130] [2020-10-16 03:23:40,012 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 03:23:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:40,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 03:23:40,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:40,158 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 03:23:40,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:40,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-16 03:23:40,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347278427] [2020-10-16 03:23:40,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 03:23:40,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:40,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 03:23:40,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 03:23:40,163 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 256 [2020-10-16 03:23:40,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 101 flow. Second operand 7 states. [2020-10-16 03:23:40,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:40,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 256 [2020-10-16 03:23:40,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:40,318 INFO L129 PetriNetUnfolder]: 104/365 cut-off events. [2020-10-16 03:23:40,318 INFO L130 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2020-10-16 03:23:40,320 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 2025 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 03:23:40,324 INFO L132 encePairwiseOnDemand]: 248/256 looper letters, 25 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2020-10-16 03:23:40,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 247 flow [2020-10-16 03:23:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 03:23:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 03:23:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1393 transitions. [2020-10-16 03:23:40,330 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.77734375 [2020-10-16 03:23:40,330 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1393 transitions. [2020-10-16 03:23:40,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1393 transitions. [2020-10-16 03:23:40,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:40,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1393 transitions. [2020-10-16 03:23:40,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 03:23:40,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 03:23:40,339 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 03:23:40,339 INFO L185 Difference]: Start difference. First operand has 36 places, 36 transitions, 101 flow. Second operand 7 states and 1393 transitions. [2020-10-16 03:23:40,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 247 flow [2020-10-16 03:23:40,341 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 03:23:40,343 INFO L241 Difference]: Finished difference. Result has 46 places, 46 transitions, 206 flow [2020-10-16 03:23:40,343 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, 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 03:23:40,343 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2020-10-16 03:23:40,344 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 206 flow [2020-10-16 03:23:40,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 03:23:40,344 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:40,344 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:40,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 03:23:40,558 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 03:23:40,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:40,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1025090109, now seen corresponding path program 1 times [2020-10-16 03:23:40,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:40,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581533644] [2020-10-16 03:23:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:40,603 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 03:23:40,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581533644] [2020-10-16 03:23:40,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:23:40,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:23:40,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845909943] [2020-10-16 03:23:40,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:23:40,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:40,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:23:40,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:23:40,607 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 256 [2020-10-16 03:23:40,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 206 flow. Second operand 3 states. [2020-10-16 03:23:40,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:40,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 256 [2020-10-16 03:23:40,608 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:40,649 INFO L129 PetriNetUnfolder]: 14/122 cut-off events. [2020-10-16 03:23:40,649 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2020-10-16 03:23:40,650 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 422 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 03:23:40,651 INFO L132 encePairwiseOnDemand]: 251/256 looper letters, 1 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2020-10-16 03:23:40,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 200 flow [2020-10-16 03:23:40,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:23:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:23:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2020-10-16 03:23:40,654 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7955729166666666 [2020-10-16 03:23:40,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2020-10-16 03:23:40,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2020-10-16 03:23:40,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:40,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2020-10-16 03:23:40,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:23:40,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:23:40,658 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:23:40,658 INFO L185 Difference]: Start difference. First operand has 46 places, 46 transitions, 206 flow. Second operand 3 states and 611 transitions. [2020-10-16 03:23:40,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 200 flow [2020-10-16 03:23:40,661 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 03:23:40,662 INFO L241 Difference]: Finished difference. Result has 46 places, 44 transitions, 188 flow [2020-10-16 03:23:40,663 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, 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 03:23:40,663 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2020-10-16 03:23:40,663 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 188 flow [2020-10-16 03:23:40,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:23:40,663 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:40,664 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 03:23:40,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 03:23:40,664 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 03:23:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:40,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1347278275, now seen corresponding path program 1 times [2020-10-16 03:23:40,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:40,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107869492] [2020-10-16 03:23:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:40,712 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 03:23:40,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107869492] [2020-10-16 03:23:40,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:23:40,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:23:40,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442277402] [2020-10-16 03:23:40,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:23:40,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:40,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:23:40,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:23:40,716 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 256 [2020-10-16 03:23:40,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 188 flow. Second operand 3 states. [2020-10-16 03:23:40,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:40,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 256 [2020-10-16 03:23:40,717 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:40,786 INFO L129 PetriNetUnfolder]: 15/130 cut-off events. [2020-10-16 03:23:40,786 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2020-10-16 03:23:40,788 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 472 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 03:23:40,789 INFO L132 encePairwiseOnDemand]: 250/256 looper letters, 21 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2020-10-16 03:23:40,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 258 flow [2020-10-16 03:23:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:23:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:23:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2020-10-16 03:23:40,792 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2020-10-16 03:23:40,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2020-10-16 03:23:40,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2020-10-16 03:23:40,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:40,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2020-10-16 03:23:40,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:23:40,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:23:40,796 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:23:40,796 INFO L185 Difference]: Start difference. First operand has 46 places, 44 transitions, 188 flow. Second operand 3 states and 608 transitions. [2020-10-16 03:23:40,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 258 flow [2020-10-16 03:23:40,798 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 03:23:40,800 INFO L241 Difference]: Finished difference. Result has 49 places, 45 transitions, 218 flow [2020-10-16 03:23:40,800 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, 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 03:23:40,800 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2020-10-16 03:23:40,800 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 218 flow [2020-10-16 03:23:40,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:23:40,801 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:40,801 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-16 03:23:40,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 03:23:40,801 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 03:23:40,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:40,802 INFO L82 PathProgramCache]: Analyzing trace with hash -184188057, now seen corresponding path program 2 times [2020-10-16 03:23:40,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:40,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336661216] [2020-10-16 03:23:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:40,908 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 03:23:40,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336661216] [2020-10-16 03:23:40,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932630645] [2020-10-16 03:23:40,909 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 03:23:40,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 03:23:40,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:40,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 03:23:40,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:41,040 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 03:23:41,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:41,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-16 03:23:41,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620402140] [2020-10-16 03:23:41,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 03:23:41,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:41,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 03:23:41,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-16 03:23:41,045 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 256 [2020-10-16 03:23:41,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 218 flow. Second operand 9 states. [2020-10-16 03:23:41,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:41,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 256 [2020-10-16 03:23:41,047 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:41,170 INFO L129 PetriNetUnfolder]: 18/159 cut-off events. [2020-10-16 03:23:41,170 INFO L130 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2020-10-16 03:23:41,171 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 569 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 03:23:41,172 INFO L132 encePairwiseOnDemand]: 250/256 looper letters, 31 selfloop transitions, 13 changer transitions 0/65 dead transitions. [2020-10-16 03:23:41,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 394 flow [2020-10-16 03:23:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 03:23:41,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-16 03:23:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1779 transitions. [2020-10-16 03:23:41,178 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7721354166666666 [2020-10-16 03:23:41,178 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1779 transitions. [2020-10-16 03:23:41,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1779 transitions. [2020-10-16 03:23:41,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:41,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1779 transitions. [2020-10-16 03:23:41,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-16 03:23:41,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-16 03:23:41,189 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-16 03:23:41,189 INFO L185 Difference]: Start difference. First operand has 49 places, 45 transitions, 218 flow. Second operand 9 states and 1779 transitions. [2020-10-16 03:23:41,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 394 flow [2020-10-16 03:23:41,192 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 03:23:41,194 INFO L241 Difference]: Finished difference. Result has 57 places, 49 transitions, 275 flow [2020-10-16 03:23:41,194 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, 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 03:23:41,194 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2020-10-16 03:23:41,194 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 275 flow [2020-10-16 03:23:41,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 03:23:41,195 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:41,195 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 03:23:41,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:41,410 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 03:23:41,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:41,411 INFO L82 PathProgramCache]: Analyzing trace with hash -909717566, now seen corresponding path program 1 times [2020-10-16 03:23:41,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:41,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307872949] [2020-10-16 03:23:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:42,034 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-10-16 03:23:42,168 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2020-10-16 03:23:42,420 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 03:23:42,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307872949] [2020-10-16 03:23:42,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:23:42,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-16 03:23:42,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835791810] [2020-10-16 03:23:42,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 03:23:42,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:42,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 03:23:42,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-16 03:23:42,425 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 256 [2020-10-16 03:23:42,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 275 flow. Second operand 10 states. [2020-10-16 03:23:42,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:42,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 256 [2020-10-16 03:23:42,426 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:43,229 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-16 03:23:43,561 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-16 03:23:43,818 INFO L129 PetriNetUnfolder]: 353/898 cut-off events. [2020-10-16 03:23:43,818 INFO L130 PetriNetUnfolder]: For 901/901 co-relation queries the response was YES. [2020-10-16 03:23:43,822 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2343 conditions, 898 events. 353/898 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5299 event pairs, 71 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 1252. Up to 484 conditions per place. [2020-10-16 03:23:43,828 INFO L132 encePairwiseOnDemand]: 246/256 looper letters, 69 selfloop transitions, 16 changer transitions 1/98 dead transitions. [2020-10-16 03:23:43,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 98 transitions, 649 flow [2020-10-16 03:23:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 03:23:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-16 03:23:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1307 transitions. [2020-10-16 03:23:43,837 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.510546875 [2020-10-16 03:23:43,838 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1307 transitions. [2020-10-16 03:23:43,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1307 transitions. [2020-10-16 03:23:43,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:43,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1307 transitions. [2020-10-16 03:23:43,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-16 03:23:43,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-16 03:23:43,849 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-16 03:23:43,849 INFO L185 Difference]: Start difference. First operand has 57 places, 49 transitions, 275 flow. Second operand 10 states and 1307 transitions. [2020-10-16 03:23:43,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 98 transitions, 649 flow [2020-10-16 03:23:43,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 614 flow, removed 4 selfloop flow, removed 5 redundant places. [2020-10-16 03:23:43,865 INFO L241 Difference]: Finished difference. Result has 67 places, 64 transitions, 356 flow [2020-10-16 03:23:43,865 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, 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=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2020-10-16 03:23:43,867 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2020-10-16 03:23:43,867 INFO L481 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 356 flow [2020-10-16 03:23:43,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 03:23:43,867 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:43,867 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 03:23:43,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 03:23:43,868 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 03:23:43,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:43,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1157930222, now seen corresponding path program 2 times [2020-10-16 03:23:43,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:43,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88439613] [2020-10-16 03:23:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:44,692 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 03:23:44,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88439613] [2020-10-16 03:23:44,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:23:44,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-16 03:23:44,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527865904] [2020-10-16 03:23:44,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 03:23:44,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:44,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 03:23:44,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-16 03:23:44,698 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 256 [2020-10-16 03:23:44,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 356 flow. Second operand 10 states. [2020-10-16 03:23:44,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:44,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 256 [2020-10-16 03:23:44,699 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:45,162 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 29 [2020-10-16 03:23:45,322 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-16 03:23:45,541 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-16 03:23:46,404 INFO L129 PetriNetUnfolder]: 549/1433 cut-off events. [2020-10-16 03:23:46,405 INFO L130 PetriNetUnfolder]: For 1304/1304 co-relation queries the response was YES. [2020-10-16 03:23:46,411 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 1433 events. 549/1433 cut-off events. For 1304/1304 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10049 event pairs, 135 based on Foata normal form. 0/1373 useless extension candidates. Maximal degree in co-relation 2559. Up to 697 conditions per place. [2020-10-16 03:23:46,420 INFO L132 encePairwiseOnDemand]: 245/256 looper letters, 88 selfloop transitions, 27 changer transitions 1/128 dead transitions. [2020-10-16 03:23:46,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 128 transitions, 871 flow [2020-10-16 03:23:46,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 03:23:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 03:23:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1697 transitions. [2020-10-16 03:23:46,427 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5099158653846154 [2020-10-16 03:23:46,428 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1697 transitions. [2020-10-16 03:23:46,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1697 transitions. [2020-10-16 03:23:46,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:46,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1697 transitions. [2020-10-16 03:23:46,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 03:23:46,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 03:23:46,439 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 03:23:46,439 INFO L185 Difference]: Start difference. First operand has 67 places, 64 transitions, 356 flow. Second operand 13 states and 1697 transitions. [2020-10-16 03:23:46,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 128 transitions, 871 flow [2020-10-16 03:23:46,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 128 transitions, 871 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 03:23:46,450 INFO L241 Difference]: Finished difference. Result has 86 places, 81 transitions, 555 flow [2020-10-16 03:23:46,451 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=555, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2020-10-16 03:23:46,451 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 51 predicate places. [2020-10-16 03:23:46,451 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 555 flow [2020-10-16 03:23:46,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 03:23:46,451 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:46,452 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 03:23:46,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 03:23:46,452 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 03:23:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:46,452 INFO L82 PathProgramCache]: Analyzing trace with hash 188548802, now seen corresponding path program 3 times [2020-10-16 03:23:46,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:46,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888312576] [2020-10-16 03:23:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:47,160 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 03:23:47,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888312576] [2020-10-16 03:23:47,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:23:47,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-16 03:23:47,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668993712] [2020-10-16 03:23:47,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 03:23:47,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:47,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 03:23:47,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-16 03:23:47,164 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 256 [2020-10-16 03:23:47,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 555 flow. Second operand 10 states. [2020-10-16 03:23:47,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:47,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 256 [2020-10-16 03:23:47,166 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:47,519 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2020-10-16 03:23:48,023 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-16 03:23:48,862 INFO L129 PetriNetUnfolder]: 632/1668 cut-off events. [2020-10-16 03:23:48,862 INFO L130 PetriNetUnfolder]: For 2220/2224 co-relation queries the response was YES. [2020-10-16 03:23:48,872 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5240 conditions, 1668 events. 632/1668 cut-off events. For 2220/2224 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12158 event pairs, 184 based on Foata normal form. 4/1604 useless extension candidates. Maximal degree in co-relation 3274. Up to 859 conditions per place. [2020-10-16 03:23:48,883 INFO L132 encePairwiseOnDemand]: 245/256 looper letters, 90 selfloop transitions, 28 changer transitions 1/131 dead transitions. [2020-10-16 03:23:48,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 131 transitions, 1048 flow [2020-10-16 03:23:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 03:23:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-16 03:23:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1566 transitions. [2020-10-16 03:23:48,889 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.509765625 [2020-10-16 03:23:48,889 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1566 transitions. [2020-10-16 03:23:48,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1566 transitions. [2020-10-16 03:23:48,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:48,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1566 transitions. [2020-10-16 03:23:48,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-16 03:23:48,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-16 03:23:48,901 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-16 03:23:48,901 INFO L185 Difference]: Start difference. First operand has 86 places, 81 transitions, 555 flow. Second operand 12 states and 1566 transitions. [2020-10-16 03:23:48,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 131 transitions, 1048 flow [2020-10-16 03:23:48,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 1032 flow, removed 3 selfloop flow, removed 3 redundant places. [2020-10-16 03:23:48,922 INFO L241 Difference]: Finished difference. Result has 100 places, 91 transitions, 716 flow [2020-10-16 03:23:48,923 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=716, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2020-10-16 03:23:48,923 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 65 predicate places. [2020-10-16 03:23:48,923 INFO L481 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 716 flow [2020-10-16 03:23:48,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 03:23:48,923 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:48,923 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:23:48,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 03:23:48,924 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 03:23:48,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:48,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1666321511, now seen corresponding path program 1 times [2020-10-16 03:23:48,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:48,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730419436] [2020-10-16 03:23:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:48,979 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 03:23:48,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730419436] [2020-10-16 03:23:48,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226376468] [2020-10-16 03:23:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:49,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 03:23:49,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 03:23:49,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 03:23:49,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-10-16 03:23:49,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49410268] [2020-10-16 03:23:49,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 03:23:49,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:49,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 03:23:49,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-16 03:23:49,091 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 256 [2020-10-16 03:23:49,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 716 flow. Second operand 6 states. [2020-10-16 03:23:49,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:49,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 256 [2020-10-16 03:23:49,092 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:49,324 INFO L129 PetriNetUnfolder]: 91/575 cut-off events. [2020-10-16 03:23:49,325 INFO L130 PetriNetUnfolder]: For 1347/1349 co-relation queries the response was YES. [2020-10-16 03:23:49,328 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 575 events. 91/575 cut-off events. For 1347/1349 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3626 event pairs, 3 based on Foata normal form. 13/580 useless extension candidates. Maximal degree in co-relation 1600. Up to 84 conditions per place. [2020-10-16 03:23:49,331 INFO L132 encePairwiseOnDemand]: 248/256 looper letters, 41 selfloop transitions, 19 changer transitions 0/109 dead transitions. [2020-10-16 03:23:49,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 963 flow [2020-10-16 03:23:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 03:23:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 03:23:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1169 transitions. [2020-10-16 03:23:49,336 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7610677083333334 [2020-10-16 03:23:49,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1169 transitions. [2020-10-16 03:23:49,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1169 transitions. [2020-10-16 03:23:49,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:49,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1169 transitions. [2020-10-16 03:23:49,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 03:23:49,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 03:23:49,343 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 03:23:49,343 INFO L185 Difference]: Start difference. First operand has 100 places, 91 transitions, 716 flow. Second operand 6 states and 1169 transitions. [2020-10-16 03:23:49,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 963 flow [2020-10-16 03:23:49,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 945 flow, removed 4 selfloop flow, removed 3 redundant places. [2020-10-16 03:23:49,354 INFO L241 Difference]: Finished difference. Result has 105 places, 98 transitions, 836 flow [2020-10-16 03:23:49,355 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=836, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2020-10-16 03:23:49,356 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2020-10-16 03:23:49,356 INFO L481 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 836 flow [2020-10-16 03:23:49,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 03:23:49,356 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:49,356 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-10-16 03:23:49,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-16 03:23:49,572 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 03:23:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:49,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1822000579, now seen corresponding path program 3 times [2020-10-16 03:23:49,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:49,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837690654] [2020-10-16 03:23:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:49,676 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 03:23:49,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837690654] [2020-10-16 03:23:49,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556416063] [2020-10-16 03:23:49,677 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 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 03:23:49,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 03:23:49,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:49,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 03:23:49,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:49,820 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 03:23:49,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:49,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-16 03:23:49,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050533967] [2020-10-16 03:23:49,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 03:23:49,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 03:23:49,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-16 03:23:49,824 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 256 [2020-10-16 03:23:49,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 836 flow. Second operand 11 states. [2020-10-16 03:23:49,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:49,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 256 [2020-10-16 03:23:49,826 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:50,037 INFO L129 PetriNetUnfolder]: 56/509 cut-off events. [2020-10-16 03:23:50,037 INFO L130 PetriNetUnfolder]: For 1534/1536 co-relation queries the response was YES. [2020-10-16 03:23:50,041 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 509 events. 56/509 cut-off events. For 1534/1536 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3094 event pairs, 0 based on Foata normal form. 5/509 useless extension candidates. Maximal degree in co-relation 1402. Up to 72 conditions per place. [2020-10-16 03:23:50,044 INFO L132 encePairwiseOnDemand]: 250/256 looper letters, 49 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2020-10-16 03:23:50,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 1172 flow [2020-10-16 03:23:50,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 03:23:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-16 03:23:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2174 transitions. [2020-10-16 03:23:50,050 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7720170454545454 [2020-10-16 03:23:50,050 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2174 transitions. [2020-10-16 03:23:50,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2174 transitions. [2020-10-16 03:23:50,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:50,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2174 transitions. [2020-10-16 03:23:50,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-16 03:23:50,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-16 03:23:50,061 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-16 03:23:50,061 INFO L185 Difference]: Start difference. First operand has 105 places, 98 transitions, 836 flow. Second operand 11 states and 2174 transitions. [2020-10-16 03:23:50,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 1172 flow [2020-10-16 03:23:50,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 121 transitions, 1154 flow, removed 9 selfloop flow, removed 0 redundant places. [2020-10-16 03:23:50,072 INFO L241 Difference]: Finished difference. Result has 117 places, 102 transitions, 926 flow [2020-10-16 03:23:50,073 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=926, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2020-10-16 03:23:50,073 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 82 predicate places. [2020-10-16 03:23:50,073 INFO L481 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 926 flow [2020-10-16 03:23:50,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 03:23:50,073 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:50,073 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 03:23:50,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:50,288 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 03:23:50,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:50,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1918787154, now seen corresponding path program 4 times [2020-10-16 03:23:50,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:50,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782636693] [2020-10-16 03:23:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:50,586 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 03:23:50,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782636693] [2020-10-16 03:23:50,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:23:50,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-16 03:23:50,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643414700] [2020-10-16 03:23:50,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 03:23:50,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:50,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 03:23:50,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-16 03:23:50,591 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 256 [2020-10-16 03:23:50,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 926 flow. Second operand 14 states. [2020-10-16 03:23:50,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:50,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 256 [2020-10-16 03:23:50,592 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:52,134 INFO L129 PetriNetUnfolder]: 741/1968 cut-off events. [2020-10-16 03:23:52,134 INFO L130 PetriNetUnfolder]: For 5387/5391 co-relation queries the response was YES. [2020-10-16 03:23:52,149 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7232 conditions, 1968 events. 741/1968 cut-off events. For 5387/5391 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13763 event pairs, 42 based on Foata normal form. 1/1929 useless extension candidates. Maximal degree in co-relation 5154. Up to 370 conditions per place. [2020-10-16 03:23:52,162 INFO L132 encePairwiseOnDemand]: 240/256 looper letters, 95 selfloop transitions, 89 changer transitions 0/196 dead transitions. [2020-10-16 03:23:52,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 196 transitions, 1805 flow [2020-10-16 03:23:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 03:23:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-16 03:23:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3159 transitions. [2020-10-16 03:23:52,174 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.49359375 [2020-10-16 03:23:52,174 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3159 transitions. [2020-10-16 03:23:52,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3159 transitions. [2020-10-16 03:23:52,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:52,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3159 transitions. [2020-10-16 03:23:52,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 26 states. [2020-10-16 03:23:52,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 26 states. [2020-10-16 03:23:52,194 INFO L81 ComplementDD]: Finished complementDD. Result 26 states. [2020-10-16 03:23:52,194 INFO L185 Difference]: Start difference. First operand has 117 places, 102 transitions, 926 flow. Second operand 25 states and 3159 transitions. [2020-10-16 03:23:52,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 196 transitions, 1805 flow [2020-10-16 03:23:52,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 196 transitions, 1737 flow, removed 9 selfloop flow, removed 8 redundant places. [2020-10-16 03:23:52,218 INFO L241 Difference]: Finished difference. Result has 138 places, 131 transitions, 1380 flow [2020-10-16 03:23:52,219 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1380, PETRI_PLACES=138, PETRI_TRANSITIONS=131} [2020-10-16 03:23:52,219 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 103 predicate places. [2020-10-16 03:23:52,219 INFO L481 AbstractCegarLoop]: Abstraction has has 138 places, 131 transitions, 1380 flow [2020-10-16 03:23:52,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 03:23:52,219 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:52,219 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 03:23:52,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 03:23:52,220 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 03:23:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:52,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1646530177, now seen corresponding path program 2 times [2020-10-16 03:23:52,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:52,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487797772] [2020-10-16 03:23:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:52,312 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 03:23:52,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487797772] [2020-10-16 03:23:52,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955048489] [2020-10-16 03:23:52,313 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 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 03:23:52,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 03:23:52,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:52,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 03:23:52,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:52,447 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 03:23:52,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:52,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 03:23:52,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757955341] [2020-10-16 03:23:52,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 03:23:52,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:52,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 03:23:52,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-16 03:23:52,455 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 256 [2020-10-16 03:23:52,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 131 transitions, 1380 flow. Second operand 10 states. [2020-10-16 03:23:52,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:52,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 256 [2020-10-16 03:23:52,457 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:52,728 INFO L129 PetriNetUnfolder]: 117/769 cut-off events. [2020-10-16 03:23:52,729 INFO L130 PetriNetUnfolder]: For 2835/2836 co-relation queries the response was YES. [2020-10-16 03:23:52,735 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3175 conditions, 769 events. 117/769 cut-off events. For 2835/2836 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4811 event pairs, 3 based on Foata normal form. 4/763 useless extension candidates. Maximal degree in co-relation 2297. Up to 114 conditions per place. [2020-10-16 03:23:52,741 INFO L132 encePairwiseOnDemand]: 249/256 looper letters, 77 selfloop transitions, 40 changer transitions 0/172 dead transitions. [2020-10-16 03:23:52,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 172 transitions, 2020 flow [2020-10-16 03:23:52,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 03:23:52,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-16 03:23:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2129 transitions. [2020-10-16 03:23:52,744 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7560369318181818 [2020-10-16 03:23:52,745 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2129 transitions. [2020-10-16 03:23:52,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2129 transitions. [2020-10-16 03:23:52,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:52,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2129 transitions. [2020-10-16 03:23:52,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-16 03:23:52,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-16 03:23:52,752 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-16 03:23:52,753 INFO L185 Difference]: Start difference. First operand has 138 places, 131 transitions, 1380 flow. Second operand 11 states and 2129 transitions. [2020-10-16 03:23:52,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 172 transitions, 2020 flow [2020-10-16 03:23:52,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 172 transitions, 1674 flow, removed 124 selfloop flow, removed 14 redundant places. [2020-10-16 03:23:52,779 INFO L241 Difference]: Finished difference. Result has 139 places, 143 transitions, 1445 flow [2020-10-16 03:23:52,780 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1445, PETRI_PLACES=139, PETRI_TRANSITIONS=143} [2020-10-16 03:23:52,780 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2020-10-16 03:23:52,780 INFO L481 AbstractCegarLoop]: Abstraction has has 139 places, 143 transitions, 1445 flow [2020-10-16 03:23:52,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 03:23:52,780 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:52,781 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-16 03:23:52,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 03:23:52,996 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 03:23:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1080051367, now seen corresponding path program 4 times [2020-10-16 03:23:52,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:52,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106177872] [2020-10-16 03:23:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:53,114 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 03:23:53,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106177872] [2020-10-16 03:23:53,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909865352] [2020-10-16 03:23:53,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:53,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 03:23:53,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 03:23:53,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 03:23:53,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:53,280 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 03:23:53,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:23:53,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-16 03:23:53,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496242307] [2020-10-16 03:23:53,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 03:23:53,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:23:53,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 03:23:53,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-16 03:23:53,286 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 256 [2020-10-16 03:23:53,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 143 transitions, 1445 flow. Second operand 13 states. [2020-10-16 03:23:53,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:23:53,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 256 [2020-10-16 03:23:53,288 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:23:53,613 INFO L129 PetriNetUnfolder]: 78/691 cut-off events. [2020-10-16 03:23:53,613 INFO L130 PetriNetUnfolder]: For 2286/2287 co-relation queries the response was YES. [2020-10-16 03:23:53,618 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 691 events. 78/691 cut-off events. For 2286/2287 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4311 event pairs, 0 based on Foata normal form. 4/688 useless extension candidates. Maximal degree in co-relation 2063. Up to 126 conditions per place. [2020-10-16 03:23:53,622 INFO L132 encePairwiseOnDemand]: 250/256 looper letters, 86 selfloop transitions, 32 changer transitions 0/174 dead transitions. [2020-10-16 03:23:53,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 174 transitions, 1927 flow [2020-10-16 03:23:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 03:23:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 03:23:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2569 transitions. [2020-10-16 03:23:53,626 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7719350961538461 [2020-10-16 03:23:53,626 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2569 transitions. [2020-10-16 03:23:53,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2569 transitions. [2020-10-16 03:23:53,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:23:53,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2569 transitions. [2020-10-16 03:23:53,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 03:23:53,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 03:23:53,633 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 03:23:53,633 INFO L185 Difference]: Start difference. First operand has 139 places, 143 transitions, 1445 flow. Second operand 13 states and 2569 transitions. [2020-10-16 03:23:53,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 174 transitions, 1927 flow [2020-10-16 03:23:53,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 174 transitions, 1879 flow, removed 10 selfloop flow, removed 4 redundant places. [2020-10-16 03:23:53,650 INFO L241 Difference]: Finished difference. Result has 149 places, 147 transitions, 1539 flow [2020-10-16 03:23:53,651 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1539, PETRI_PLACES=149, PETRI_TRANSITIONS=147} [2020-10-16 03:23:53,651 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 114 predicate places. [2020-10-16 03:23:53,651 INFO L481 AbstractCegarLoop]: Abstraction has has 149 places, 147 transitions, 1539 flow [2020-10-16 03:23:53,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 03:23:53,651 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:23:53,652 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 03:23:53,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:53,865 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 03:23:53,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:23:53,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1334498623, now seen corresponding path program 1 times [2020-10-16 03:23:53,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:23:53,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596193593] [2020-10-16 03:23:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:23:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:54,831 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-10-16 03:23:55,025 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-10-16 03:23:55,374 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-16 03:23:55,640 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-10-16 03:23:55,911 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-16 03:23:56,165 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-16 03:23:56,443 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-16 03:23:56,779 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-16 03:23:57,081 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-16 03:23:57,393 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-16 03:23:57,663 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-16 03:23:57,813 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 03:23:57,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596193593] [2020-10-16 03:23:57,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703843070] [2020-10-16 03:23:57,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 03:23:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:23:57,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 60 conjunts are in the unsatisfiable core [2020-10-16 03:23:57,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 03:23:58,195 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 03:23:58,196 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:58,218 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-16 03:23:58,224 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 03:23:58,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-16 03:23:58,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-16 03:23:58,793 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 03:23:58,794 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 03:23:58,810 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 03:23:58,812 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 03:23:58,812 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-16 03:23:59,601 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-16 03:23:59,621 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 03:23:59,795 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 03:24:00,113 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 03:24:00,667 INFO L721 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-16 03:24:20,443 INFO L545 ElimStorePlain]: Start of recursive call 2: 22 dim-0 vars, End of recursive call: 22 dim-0 vars, and 1 xjuncts. [2020-10-16 03:24:20,458 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 03:24:20,467 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 03:24:20,550 INFO L625 ElimStorePlain]: treesize reduction 641, result has 9.2 percent of original size [2020-10-16 03:24:20,554 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 03:24:20,554 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:65 [2020-10-16 03:24:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:24:20,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 03:24:20,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 36 [2020-10-16 03:24:20,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871165037] [2020-10-16 03:24:20,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-16 03:24:20,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:24:20,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-16 03:24:20,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2020-10-16 03:24:20,702 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 256 [2020-10-16 03:24:20,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 147 transitions, 1539 flow. Second operand 37 states. [2020-10-16 03:24:20,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:24:20,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 256 [2020-10-16 03:24:20,704 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:24:21,214 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-10-16 03:24:21,587 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-16 03:24:21,995 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-10-16 03:24:22,731 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 41 [2020-10-16 03:24:22,963 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-16 03:24:24,669 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2020-10-16 03:24:24,979 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-16 03:24:26,523 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2020-10-16 03:24:27,241 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-16 03:24:27,995 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-16 03:24:28,225 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-16 03:24:30,016 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 100 DAG size of output: 89 [2020-10-16 03:24:35,126 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-16 03:24:36,201 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-16 03:24:38,184 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-10-16 03:24:39,265 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-16 03:24:40,220 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-16 03:24:40,639 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-16 03:24:43,859 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-16 03:24:46,548 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2020-10-16 03:24:48,151 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 03:24:49,044 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-16 03:24:51,120 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2020-10-16 03:24:52,375 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-16 03:24:54,257 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-10-16 03:24:55,435 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-16 03:24:56,508 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-16 03:25:03,339 WARN L193 SmtUtils]: Spent 6.16 s on a formula simplification. DAG size of input: 132 DAG size of output: 121 [2020-10-16 03:25:04,320 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-16 03:25:04,981 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-16 03:25:06,178 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-16 03:25:07,209 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-16 03:25:08,849 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-16 03:25:10,387 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-16 03:25:20,024 WARN L193 SmtUtils]: Spent 8.57 s on a formula simplification. DAG size of input: 149 DAG size of output: 138 [2020-10-16 03:25:20,738 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-16 03:25:21,940 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-16 03:25:22,628 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-16 03:25:35,033 WARN L193 SmtUtils]: Spent 11.17 s on a formula simplification. DAG size of input: 146 DAG size of output: 135 [2020-10-16 03:25:35,770 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-16 03:25:37,125 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-16 03:25:41,736 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2020-10-16 03:25:42,950 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-16 03:25:43,620 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-16 03:25:45,901 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-10-16 03:25:53,184 WARN L193 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 126 DAG size of output: 114 [2020-10-16 03:25:54,238 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-16 03:26:04,265 WARN L193 SmtUtils]: Spent 8.49 s on a formula simplification. DAG size of input: 161 DAG size of output: 150 [2020-10-16 03:26:04,971 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-16 03:26:06,787 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2020-10-16 03:26:15,391 WARN L193 SmtUtils]: Spent 7.16 s on a formula simplification. DAG size of input: 141 DAG size of output: 129 [2020-10-16 03:26:16,579 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-16 03:26:26,935 WARN L193 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 135 DAG size of output: 124 [2020-10-16 03:26:27,491 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-16 03:26:29,101 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-16 03:26:40,439 WARN L193 SmtUtils]: Spent 8.79 s on a formula simplification. DAG size of input: 130 DAG size of output: 119 [2020-10-16 03:26:42,356 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-16 03:26:52,935 WARN L193 SmtUtils]: Spent 9.19 s on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2020-10-16 03:26:53,704 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-16 03:26:56,439 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-16 03:26:57,878 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-16 03:27:12,265 WARN L193 SmtUtils]: Spent 12.84 s on a formula simplification. DAG size of input: 138 DAG size of output: 126 [2020-10-16 03:27:14,305 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-16 03:27:16,145 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-16 03:27:23,187 WARN L193 SmtUtils]: Spent 5.84 s on a formula simplification. DAG size of input: 118 DAG size of output: 105 [2020-10-16 03:27:28,648 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-16 03:27:29,674 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-16 03:27:30,119 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-10-16 03:27:31,766 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-16 03:27:34,957 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-10-16 03:27:40,520 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-16 03:27:41,835 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-16 03:27:42,483 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-16 03:27:45,169 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-16 03:27:48,609 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-16 03:27:50,389 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-16 03:27:51,197 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-16 03:27:52,324 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-10-16 03:27:53,526 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-16 03:27:54,620 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-16 03:27:59,054 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2020-10-16 03:27:59,994 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-16 03:28:01,009 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-16 03:28:06,898 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2020-10-16 03:28:07,598 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-16 03:28:08,861 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-16 03:28:13,772 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2020-10-16 03:28:14,899 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-16 03:28:17,213 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-16 03:28:29,427 WARN L193 SmtUtils]: Spent 10.35 s on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2020-10-16 03:28:31,594 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-16 03:28:37,645 WARN L193 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2020-10-16 03:28:42,912 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-16 03:28:48,712 WARN L193 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2020-10-16 03:28:51,709 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-16 03:28:52,428 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-16 03:28:53,351 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-16 03:28:53,603 INFO L129 PetriNetUnfolder]: 1843/4891 cut-off events. [2020-10-16 03:28:53,603 INFO L130 PetriNetUnfolder]: For 15689/15691 co-relation queries the response was YES. [2020-10-16 03:28:53,627 INFO L80 FinitePrefix]: Finished finitePrefix Result has 18032 conditions, 4891 events. 1843/4891 cut-off events. For 15689/15691 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 40589 event pairs, 98 based on Foata normal form. 2/4797 useless extension candidates. Maximal degree in co-relation 15153. Up to 766 conditions per place. [2020-10-16 03:28:53,653 INFO L132 encePairwiseOnDemand]: 238/256 looper letters, 281 selfloop transitions, 326 changer transitions 16/635 dead transitions. [2020-10-16 03:28:53,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 635 transitions, 6189 flow [2020-10-16 03:28:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-10-16 03:28:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-16 03:28:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 12964 transitions. [2020-10-16 03:28:53,672 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.46459288990825687 [2020-10-16 03:28:53,672 INFO L72 ComplementDD]: Start complementDD. Operand 109 states and 12964 transitions. [2020-10-16 03:28:53,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 12964 transitions. [2020-10-16 03:28:53,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:28:53,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 109 states and 12964 transitions. [2020-10-16 03:28:53,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 110 states. [2020-10-16 03:28:53,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 110 states. [2020-10-16 03:28:53,712 INFO L81 ComplementDD]: Finished complementDD. Result 110 states. [2020-10-16 03:28:53,712 INFO L185 Difference]: Start difference. First operand has 149 places, 147 transitions, 1539 flow. Second operand 109 states and 12964 transitions. [2020-10-16 03:28:53,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 635 transitions, 6189 flow [2020-10-16 03:28:53,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 635 transitions, 5937 flow, removed 21 selfloop flow, removed 10 redundant places. [2020-10-16 03:28:53,779 INFO L241 Difference]: Finished difference. Result has 256 places, 377 transitions, 4437 flow [2020-10-16 03:28:53,779 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=109, PETRI_FLOW=4437, PETRI_PLACES=256, PETRI_TRANSITIONS=377} [2020-10-16 03:28:53,779 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 221 predicate places. [2020-10-16 03:28:53,780 INFO L481 AbstractCegarLoop]: Abstraction has has 256 places, 377 transitions, 4437 flow [2020-10-16 03:28:53,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-16 03:28:53,780 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:28:53,780 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, 1] [2020-10-16 03:28:53,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 03:28:53,994 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 03:28:53,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:28:53,994 INFO L82 PathProgramCache]: Analyzing trace with hash -658245152, now seen corresponding path program 1 times [2020-10-16 03:28:53,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:28:53,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375017743] [2020-10-16 03:28:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:28:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:28:54,116 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 23: A-local: [(t1Thread1of1ForFork0_push_~stack.offset_5 Int), (|t1Thread1of1ForFork0_push_#t~ret35_7| Int)], B-local: []. [2020-10-16 03:28:54,118 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 24: A-local: [(t1Thread1of1ForFork0_push_~stack.offset_5 Int), (|t1Thread1of1ForFork0_push_#t~ret35_7| Int)], B-local: []. [2020-10-16 03:28:54,120 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 25: A-local: [(t1Thread1of1ForFork0_push_~stack.offset_5 Int), (|t1Thread1of1ForFork0_push_#t~ret35_7| Int)], B-local: []. [2020-10-16 03:28:54,124 ERROR L253 erpolLogProxyWrapper]: Interpolant 26 not inductive [2020-10-16 03:28:54,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 03:28:54,136 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:360) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-16 03:28:54,141 INFO L168 Benchmark]: Toolchain (without parser) took 320637.77 ms. Allocated memory was 246.4 MB in the beginning and 1.1 GB in the end (delta: 885.0 MB). Free memory was 200.2 MB in the beginning and 298.8 MB in the end (delta: -98.5 MB). Peak memory consumption was 786.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:54,142 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 246.4 MB. Free memory was 224.5 MB in the beginning and 223.6 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 03:28:54,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 931.95 ms. Allocated memory was 246.4 MB in the beginning and 300.9 MB in the end (delta: 54.5 MB). Free memory was 200.2 MB in the beginning and 228.9 MB in the end (delta: -28.7 MB). Peak memory consumption was 35.9 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:54,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.18 ms. Allocated memory is still 300.9 MB. Free memory was 228.9 MB in the beginning and 226.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:54,143 INFO L168 Benchmark]: Boogie Preprocessor took 42.04 ms. Allocated memory is still 300.9 MB. Free memory was 226.4 MB in the beginning and 224.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:54,144 INFO L168 Benchmark]: RCFGBuilder took 584.60 ms. Allocated memory is still 300.9 MB. Free memory was 223.8 MB in the beginning and 191.8 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:54,144 INFO L168 Benchmark]: TraceAbstraction took 319011.27 ms. Allocated memory was 300.9 MB in the beginning and 1.1 GB in the end (delta: 830.5 MB). Free memory was 190.9 MB in the beginning and 298.8 MB in the end (delta: -107.8 MB). Peak memory consumption was 722.6 MB. Max. memory is 14.2 GB. [2020-10-16 03:28:54,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 246.4 MB. Free memory was 224.5 MB in the beginning and 223.6 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 931.95 ms. Allocated memory was 246.4 MB in the beginning and 300.9 MB in the end (delta: 54.5 MB). Free memory was 200.2 MB in the beginning and 228.9 MB in the end (delta: -28.7 MB). Peak memory consumption was 35.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 62.18 ms. Allocated memory is still 300.9 MB. Free memory was 228.9 MB in the beginning and 226.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 42.04 ms. Allocated memory is still 300.9 MB. Free memory was 226.4 MB in the beginning and 224.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 584.60 ms. Allocated memory is still 300.9 MB. Free memory was 223.8 MB in the beginning and 191.8 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 319011.27 ms. Allocated memory was 300.9 MB in the beginning and 1.1 GB in the end (delta: 830.5 MB). Free memory was 190.9 MB in the beginning and 298.8 MB in the end (delta: -107.8 MB). Peak memory consumption was 722.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4050 VarBasedMoverChecksPositive, 70 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 335 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 122 PlacesBefore, 35 PlacesAfterwards, 126 TransitionsBefore, 34 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 118 TotalNumberOfCompositions, 9349 MoverChecksTotal - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...