/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:40:58,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:40:58,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:40:58,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:40:58,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:40:58,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:40:58,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:40:58,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:40:58,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:40:58,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:40:58,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:40:58,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:40:58,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:40:58,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:40:58,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:40:58,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:40:58,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:40:58,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:40:58,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:40:58,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:40:58,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:40:58,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:40:58,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:40:58,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:40:58,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:40:58,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:40:58,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:40:58,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:40:58,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:40:58,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:40:58,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:40:58,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:40:58,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:40:58,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:40:58,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:40:58,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:40:58,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:40:58,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:40:58,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:40:58,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:40:58,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:40:58,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:40:58,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:40:58,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:40:58,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:40:58,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:40:58,207 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:40:58,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:40:58,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:40:58,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:40:58,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:40:58,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:40:58,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:40:58,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:40:58,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:40:58,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:40:58,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:40:58,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:40:58,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:40:58,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:40:58,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:40:58,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:40:58,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:40:58,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:40:58,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:40:58,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:40:58,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:40:58,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:40:58,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:40:58,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:40:58,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:40:58,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:40:58,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:40:58,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:40:58,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:40:58,538 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:40:58,539 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-10-16 01:40:58,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf41d57c/6d470ba3cdda449d946622ce2d212f09/FLAGb96af217a [2020-10-16 01:40:59,115 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:40:59,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-10-16 01:40:59,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf41d57c/6d470ba3cdda449d946622ce2d212f09/FLAGb96af217a [2020-10-16 01:40:59,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf41d57c/6d470ba3cdda449d946622ce2d212f09 [2020-10-16 01:40:59,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:40:59,417 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:40:59,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:40:59,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:40:59,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:40:59,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:59" (1/1) ... [2020-10-16 01:40:59,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1c832f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:40:59, skipping insertion in model container [2020-10-16 01:40:59,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:40:59" (1/1) ... [2020-10-16 01:40:59,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:40:59,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:40:59,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:40:59,939 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:41:00,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:41:00,114 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:41:00,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00 WrapperNode [2020-10-16 01:41:00,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:41:00,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:41:00,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:41:00,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:41:00,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (1/1) ... [2020-10-16 01:41:00,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (1/1) ... [2020-10-16 01:41:00,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:41:00,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:41:00,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:41:00,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:41:00,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (1/1) ... [2020-10-16 01:41:00,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (1/1) ... [2020-10-16 01:41:00,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (1/1) ... [2020-10-16 01:41:00,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (1/1) ... [2020-10-16 01:41:00,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (1/1) ... [2020-10-16 01:41:00,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (1/1) ... [2020-10-16 01:41:00,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (1/1) ... [2020-10-16 01:41:00,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:41:00,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:41:00,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:41:00,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:41:00,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (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 01:41:00,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:41:00,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:41:00,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:41:00,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:41:00,256 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:41:00,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:41:00,256 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:41:00,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:41:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:41:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:41:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:41:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:41:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:41:00,259 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 01:41:00,572 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:41:00,572 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:41:00,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:00 BoogieIcfgContainer [2020-10-16 01:41:00,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:41:00,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:41:00,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:41:00,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:41:00,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:40:59" (1/3) ... [2020-10-16 01:41:00,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cba52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:00, skipping insertion in model container [2020-10-16 01:41:00,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:00" (2/3) ... [2020-10-16 01:41:00,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cba52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:00, skipping insertion in model container [2020-10-16 01:41:00,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:00" (3/3) ... [2020-10-16 01:41:00,583 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-10-16 01:41:00,594 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:41:00,601 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:41:00,601 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:41:00,628 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,629 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,629 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,629 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,630 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,630 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,631 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,631 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,631 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,631 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,637 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,646 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,646 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,647 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,647 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,654 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,654 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:00,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:41:00,692 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:41:00,692 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:41:00,692 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:41:00,693 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:41:00,693 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:41:00,693 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:41:00,693 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:41:00,693 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:41:00,705 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-10-16 01:41:00,747 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-10-16 01:41:00,747 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:00,753 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 01:41:00,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 67 transitions, 149 flow [2020-10-16 01:41:00,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 53 transitions, 115 flow [2020-10-16 01:41:00,761 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:41:00,764 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions, 115 flow [2020-10-16 01:41:00,766 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 53 transitions, 115 flow [2020-10-16 01:41:00,767 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions, 115 flow [2020-10-16 01:41:00,789 INFO L129 PetriNetUnfolder]: 1/53 cut-off events. [2020-10-16 01:41:00,789 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:00,790 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-16 01:41:00,792 INFO L117 LiptonReduction]: Number of co-enabled transitions 804 [2020-10-16 01:41:01,964 INFO L132 LiptonReduction]: Checked pairs total: 1270 [2020-10-16 01:41:01,964 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 01:41:01,967 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1208 [2020-10-16 01:41:01,975 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:41:01,975 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:01,975 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:01,976 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:01,977 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:01,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:01,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1046652456, now seen corresponding path program 1 times [2020-10-16 01:41:01,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:01,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019650776] [2020-10-16 01:41:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:02,197 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 01:41:02,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019650776] [2020-10-16 01:41:02,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:02,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:41:02,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354441424] [2020-10-16 01:41:02,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:02,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:02,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:02,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:02,222 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2020-10-16 01:41:02,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:41:02,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:02,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2020-10-16 01:41:02,226 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:02,262 INFO L129 PetriNetUnfolder]: 12/42 cut-off events. [2020-10-16 01:41:02,263 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:02,263 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 42 events. 12/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 113 event pairs, 2 based on Foata normal form. 8/47 useless extension candidates. Maximal degree in co-relation 69. Up to 25 conditions per place. [2020-10-16 01:41:02,265 INFO L132 encePairwiseOnDemand]: 103/108 looper letters, 5 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:41:02,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 19 transitions, 63 flow [2020-10-16 01:41:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2020-10-16 01:41:02,281 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8487654320987654 [2020-10-16 01:41:02,282 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2020-10-16 01:41:02,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2020-10-16 01:41:02,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:02,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2020-10-16 01:41:02,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:02,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:02,297 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:02,299 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 275 transitions. [2020-10-16 01:41:02,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 19 transitions, 63 flow [2020-10-16 01:41:02,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 60 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:41:02,305 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 57 flow [2020-10-16 01:41:02,308 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2020-10-16 01:41:02,308 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2020-10-16 01:41:02,309 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2020-10-16 01:41:02,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:02,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:02,309 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:02,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:41:02,310 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:02,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1913511813, now seen corresponding path program 1 times [2020-10-16 01:41:02,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:02,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020716005] [2020-10-16 01:41:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:02,425 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 01:41:02,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020716005] [2020-10-16 01:41:02,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:02,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:41:02,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897778937] [2020-10-16 01:41:02,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:02,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:02,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:02,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:02,433 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 108 [2020-10-16 01:41:02,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states. [2020-10-16 01:41:02,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:02,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 108 [2020-10-16 01:41:02,434 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:02,468 INFO L129 PetriNetUnfolder]: 9/37 cut-off events. [2020-10-16 01:41:02,468 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2020-10-16 01:41:02,469 INFO L80 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 37 events. 9/37 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 83 event pairs, 4 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 70. Up to 16 conditions per place. [2020-10-16 01:41:02,470 INFO L132 encePairwiseOnDemand]: 104/108 looper letters, 3 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2020-10-16 01:41:02,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 73 flow [2020-10-16 01:41:02,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2020-10-16 01:41:02,477 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8549382716049383 [2020-10-16 01:41:02,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2020-10-16 01:41:02,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2020-10-16 01:41:02,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:02,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2020-10-16 01:41:02,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:02,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:02,484 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:02,485 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states and 277 transitions. [2020-10-16 01:41:02,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 73 flow [2020-10-16 01:41:02,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:41:02,487 INFO L241 Difference]: Finished difference. Result has 28 places, 20 transitions, 73 flow [2020-10-16 01:41:02,487 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2020-10-16 01:41:02,488 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2020-10-16 01:41:02,488 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 73 flow [2020-10-16 01:41:02,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:02,488 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:02,489 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:02,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:41:02,489 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:02,490 INFO L82 PathProgramCache]: Analyzing trace with hash -810694867, now seen corresponding path program 1 times [2020-10-16 01:41:02,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:02,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401951543] [2020-10-16 01:41:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:02,560 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 01:41:02,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401951543] [2020-10-16 01:41:02,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:02,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:02,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150183768] [2020-10-16 01:41:02,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:02,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:02,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:02,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:02,564 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2020-10-16 01:41:02,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 73 flow. Second operand 3 states. [2020-10-16 01:41:02,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:02,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2020-10-16 01:41:02,565 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:02,586 INFO L129 PetriNetUnfolder]: 11/53 cut-off events. [2020-10-16 01:41:02,587 INFO L130 PetriNetUnfolder]: For 36/63 co-relation queries the response was YES. [2020-10-16 01:41:02,587 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 53 events. 11/53 cut-off events. For 36/63 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 191 event pairs, 6 based on Foata normal form. 6/56 useless extension candidates. Maximal degree in co-relation 113. Up to 18 conditions per place. [2020-10-16 01:41:02,588 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 5 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 01:41:02,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 91 flow [2020-10-16 01:41:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2020-10-16 01:41:02,591 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2020-10-16 01:41:02,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2020-10-16 01:41:02,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2020-10-16 01:41:02,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:02,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2020-10-16 01:41:02,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:02,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:02,594 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:02,594 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 73 flow. Second operand 3 states and 272 transitions. [2020-10-16 01:41:02,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 91 flow [2020-10-16 01:41:02,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:41:02,596 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 81 flow [2020-10-16 01:41:02,597 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2020-10-16 01:41:02,597 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2020-10-16 01:41:02,597 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 81 flow [2020-10-16 01:41:02,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:02,597 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:02,598 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:02,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:41:02,598 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:02,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1124808598, now seen corresponding path program 1 times [2020-10-16 01:41:02,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:02,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38600036] [2020-10-16 01:41:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:02,638 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 01:41:02,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38600036] [2020-10-16 01:41:02,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:02,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:41:02,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696683422] [2020-10-16 01:41:02,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:02,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:02,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:02,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:02,642 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 108 [2020-10-16 01:41:02,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 81 flow. Second operand 3 states. [2020-10-16 01:41:02,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:02,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 108 [2020-10-16 01:41:02,643 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:02,658 INFO L129 PetriNetUnfolder]: 4/34 cut-off events. [2020-10-16 01:41:02,659 INFO L130 PetriNetUnfolder]: For 69/87 co-relation queries the response was YES. [2020-10-16 01:41:02,659 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 34 events. 4/34 cut-off events. For 69/87 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs, 2 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 76. Up to 13 conditions per place. [2020-10-16 01:41:02,660 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2020-10-16 01:41:02,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 87 flow [2020-10-16 01:41:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 01:41:02,662 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8734567901234568 [2020-10-16 01:41:02,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 01:41:02,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 01:41:02,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:02,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 01:41:02,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:02,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:02,666 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:02,666 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 81 flow. Second operand 3 states and 283 transitions. [2020-10-16 01:41:02,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 87 flow [2020-10-16 01:41:02,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 82 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 01:41:02,668 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 84 flow [2020-10-16 01:41:02,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2020-10-16 01:41:02,669 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2020-10-16 01:41:02,669 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 84 flow [2020-10-16 01:41:02,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:02,669 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:02,669 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:02,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:41:02,670 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:02,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:02,670 INFO L82 PathProgramCache]: Analyzing trace with hash 619888563, now seen corresponding path program 1 times [2020-10-16 01:41:02,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:02,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384016982] [2020-10-16 01:41:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:02,709 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 01:41:02,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384016982] [2020-10-16 01:41:02,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:02,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:02,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122196686] [2020-10-16 01:41:02,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:02,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:02,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:02,713 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2020-10-16 01:41:02,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 84 flow. Second operand 4 states. [2020-10-16 01:41:02,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:02,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2020-10-16 01:41:02,714 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:02,778 INFO L129 PetriNetUnfolder]: 7/59 cut-off events. [2020-10-16 01:41:02,779 INFO L130 PetriNetUnfolder]: For 124/151 co-relation queries the response was YES. [2020-10-16 01:41:02,781 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 59 events. 7/59 cut-off events. For 124/151 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 230 event pairs, 2 based on Foata normal form. 10/68 useless extension candidates. Maximal degree in co-relation 145. Up to 19 conditions per place. [2020-10-16 01:41:02,782 INFO L132 encePairwiseOnDemand]: 103/108 looper letters, 4 selfloop transitions, 4 changer transitions 2/23 dead transitions. [2020-10-16 01:41:02,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 119 flow [2020-10-16 01:41:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:41:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:41:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2020-10-16 01:41:02,785 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8217592592592593 [2020-10-16 01:41:02,786 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2020-10-16 01:41:02,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2020-10-16 01:41:02,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:02,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2020-10-16 01:41:02,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:41:02,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:41:02,789 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:41:02,790 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 84 flow. Second operand 4 states and 355 transitions. [2020-10-16 01:41:02,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 119 flow [2020-10-16 01:41:02,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:02,793 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 93 flow [2020-10-16 01:41:02,793 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 01:41:02,793 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2020-10-16 01:41:02,794 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 93 flow [2020-10-16 01:41:02,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:02,795 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:02,795 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:02,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:41:02,795 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:02,796 INFO L82 PathProgramCache]: Analyzing trace with hash 638829873, now seen corresponding path program 2 times [2020-10-16 01:41:02,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:02,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173587754] [2020-10-16 01:41:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:02,923 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 01:41:02,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173587754] [2020-10-16 01:41:02,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:02,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:02,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371711236] [2020-10-16 01:41:02,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:02,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:02,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:02,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:02,927 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 108 [2020-10-16 01:41:02,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 93 flow. Second operand 4 states. [2020-10-16 01:41:02,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:02,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 108 [2020-10-16 01:41:02,928 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:02,980 INFO L129 PetriNetUnfolder]: 67/157 cut-off events. [2020-10-16 01:41:02,981 INFO L130 PetriNetUnfolder]: For 572/616 co-relation queries the response was YES. [2020-10-16 01:41:02,982 INFO L80 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 157 events. 67/157 cut-off events. For 572/616 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 721 event pairs, 28 based on Foata normal form. 27/172 useless extension candidates. Maximal degree in co-relation 407. Up to 102 conditions per place. [2020-10-16 01:41:02,983 INFO L132 encePairwiseOnDemand]: 102/108 looper letters, 7 selfloop transitions, 7 changer transitions 2/30 dead transitions. [2020-10-16 01:41:02,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 145 flow [2020-10-16 01:41:02,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:41:02,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:41:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2020-10-16 01:41:02,985 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7277777777777777 [2020-10-16 01:41:02,986 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 393 transitions. [2020-10-16 01:41:02,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 393 transitions. [2020-10-16 01:41:02,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:02,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 393 transitions. [2020-10-16 01:41:02,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:41:02,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:41:02,989 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:41:02,989 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 93 flow. Second operand 5 states and 393 transitions. [2020-10-16 01:41:02,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 145 flow [2020-10-16 01:41:02,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 135 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 01:41:02,992 INFO L241 Difference]: Finished difference. Result has 38 places, 26 transitions, 137 flow [2020-10-16 01:41:02,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2020-10-16 01:41:02,992 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2020-10-16 01:41:02,992 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 137 flow [2020-10-16 01:41:02,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:02,993 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:02,993 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:02,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:41:02,993 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:02,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:02,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1100363426, now seen corresponding path program 1 times [2020-10-16 01:41:02,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:02,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110755008] [2020-10-16 01:41:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:03,057 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 01:41:03,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110755008] [2020-10-16 01:41:03,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:03,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:41:03,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127688288] [2020-10-16 01:41:03,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:41:03,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:03,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:41:03,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:41:03,061 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 108 [2020-10-16 01:41:03,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 137 flow. Second operand 5 states. [2020-10-16 01:41:03,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:03,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 108 [2020-10-16 01:41:03,062 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:03,136 INFO L129 PetriNetUnfolder]: 41/122 cut-off events. [2020-10-16 01:41:03,137 INFO L130 PetriNetUnfolder]: For 547/723 co-relation queries the response was YES. [2020-10-16 01:41:03,137 INFO L80 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 122 events. 41/122 cut-off events. For 547/723 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 559 event pairs, 4 based on Foata normal form. 67/182 useless extension candidates. Maximal degree in co-relation 461. Up to 91 conditions per place. [2020-10-16 01:41:03,138 INFO L132 encePairwiseOnDemand]: 102/108 looper letters, 5 selfloop transitions, 13 changer transitions 4/36 dead transitions. [2020-10-16 01:41:03,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 239 flow [2020-10-16 01:41:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:41:03,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:41:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2020-10-16 01:41:03,141 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2020-10-16 01:41:03,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2020-10-16 01:41:03,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2020-10-16 01:41:03,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:03,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2020-10-16 01:41:03,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:41:03,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:41:03,146 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:41:03,146 INFO L185 Difference]: Start difference. First operand has 38 places, 26 transitions, 137 flow. Second operand 7 states and 549 transitions. [2020-10-16 01:41:03,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 239 flow [2020-10-16 01:41:03,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:41:03,149 INFO L241 Difference]: Finished difference. Result has 46 places, 32 transitions, 221 flow [2020-10-16 01:41:03,149 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2020-10-16 01:41:03,150 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2020-10-16 01:41:03,150 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 221 flow [2020-10-16 01:41:03,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:41:03,150 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:03,150 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:03,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:41:03,151 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:03,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:03,151 INFO L82 PathProgramCache]: Analyzing trace with hash -448714671, now seen corresponding path program 1 times [2020-10-16 01:41:03,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:03,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890069730] [2020-10-16 01:41:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:03,184 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 01:41:03,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890069730] [2020-10-16 01:41:03,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:03,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:03,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709623795] [2020-10-16 01:41:03,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:03,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:03,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:03,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:03,187 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 108 [2020-10-16 01:41:03,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 221 flow. Second operand 3 states. [2020-10-16 01:41:03,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:03,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 108 [2020-10-16 01:41:03,188 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:03,211 INFO L129 PetriNetUnfolder]: 30/118 cut-off events. [2020-10-16 01:41:03,211 INFO L130 PetriNetUnfolder]: For 711/824 co-relation queries the response was YES. [2020-10-16 01:41:03,211 INFO L80 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 118 events. 30/118 cut-off events. For 711/824 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 606 event pairs, 3 based on Foata normal form. 15/127 useless extension candidates. Maximal degree in co-relation 481. Up to 92 conditions per place. [2020-10-16 01:41:03,212 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 3 selfloop transitions, 3 changer transitions 7/32 dead transitions. [2020-10-16 01:41:03,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 32 transitions, 233 flow [2020-10-16 01:41:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:03,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2020-10-16 01:41:03,214 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2020-10-16 01:41:03,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2020-10-16 01:41:03,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2020-10-16 01:41:03,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:03,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2020-10-16 01:41:03,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:03,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:03,216 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:03,216 INFO L185 Difference]: Start difference. First operand has 46 places, 32 transitions, 221 flow. Second operand 3 states and 276 transitions. [2020-10-16 01:41:03,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 32 transitions, 233 flow [2020-10-16 01:41:03,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 32 transitions, 203 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:03,221 INFO L241 Difference]: Finished difference. Result has 47 places, 25 transitions, 154 flow [2020-10-16 01:41:03,221 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2020-10-16 01:41:03,221 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2020-10-16 01:41:03,221 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 154 flow [2020-10-16 01:41:03,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:03,222 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:03,222 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:03,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:41:03,222 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:03,223 INFO L82 PathProgramCache]: Analyzing trace with hash 563745339, now seen corresponding path program 1 times [2020-10-16 01:41:03,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:03,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537005897] [2020-10-16 01:41:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:03,279 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 01:41:03,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537005897] [2020-10-16 01:41:03,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:03,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:41:03,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640690286] [2020-10-16 01:41:03,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:41:03,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:03,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:41:03,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:41:03,282 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 108 [2020-10-16 01:41:03,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 154 flow. Second operand 6 states. [2020-10-16 01:41:03,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:03,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 108 [2020-10-16 01:41:03,283 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:03,330 INFO L129 PetriNetUnfolder]: 15/68 cut-off events. [2020-10-16 01:41:03,331 INFO L130 PetriNetUnfolder]: For 198/255 co-relation queries the response was YES. [2020-10-16 01:41:03,331 INFO L80 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 68 events. 15/68 cut-off events. For 198/255 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 259 event pairs, 0 based on Foata normal form. 28/92 useless extension candidates. Maximal degree in co-relation 268. Up to 37 conditions per place. [2020-10-16 01:41:03,332 INFO L132 encePairwiseOnDemand]: 102/108 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2020-10-16 01:41:03,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 27 transitions, 184 flow [2020-10-16 01:41:03,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:41:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:41:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2020-10-16 01:41:03,335 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7129629629629629 [2020-10-16 01:41:03,335 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2020-10-16 01:41:03,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2020-10-16 01:41:03,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:03,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2020-10-16 01:41:03,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:41:03,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:41:03,338 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:41:03,338 INFO L185 Difference]: Start difference. First operand has 47 places, 25 transitions, 154 flow. Second operand 7 states and 539 transitions. [2020-10-16 01:41:03,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 27 transitions, 184 flow [2020-10-16 01:41:03,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 27 transitions, 159 flow, removed 7 selfloop flow, removed 6 redundant places. [2020-10-16 01:41:03,340 INFO L241 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2020-10-16 01:41:03,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2020-10-16 01:41:03,341 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2020-10-16 01:41:03,341 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2020-10-16 01:41:03,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:41:03,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:41:03,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:41:03 BasicIcfg [2020-10-16 01:41:03,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:41:03,348 INFO L168 Benchmark]: Toolchain (without parser) took 3929.81 ms. Allocated memory was 253.2 MB in the beginning and 369.6 MB in the end (delta: 116.4 MB). Free memory was 208.3 MB in the beginning and 240.0 MB in the end (delta: -31.7 MB). Peak memory consumption was 84.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:03,349 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:41:03,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.72 ms. Allocated memory was 253.2 MB in the beginning and 318.2 MB in the end (delta: 65.0 MB). Free memory was 208.3 MB in the beginning and 271.6 MB in the end (delta: -63.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:03,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.85 ms. Allocated memory is still 318.2 MB. Free memory was 271.6 MB in the beginning and 269.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:03,351 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 318.2 MB. Free memory was 269.1 MB in the beginning and 266.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:03,352 INFO L168 Benchmark]: RCFGBuilder took 384.07 ms. Allocated memory is still 318.2 MB. Free memory was 266.5 MB in the beginning and 244.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:03,353 INFO L168 Benchmark]: TraceAbstraction took 2769.46 ms. Allocated memory was 318.2 MB in the beginning and 369.6 MB in the end (delta: 51.4 MB). Free memory was 244.7 MB in the beginning and 240.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 56.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:03,357 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 697.72 ms. Allocated memory was 253.2 MB in the beginning and 318.2 MB in the end (delta: 65.0 MB). Free memory was 208.3 MB in the beginning and 271.6 MB in the end (delta: -63.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.85 ms. Allocated memory is still 318.2 MB. Free memory was 271.6 MB in the beginning and 269.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 318.2 MB. Free memory was 269.1 MB in the beginning and 266.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 384.07 ms. Allocated memory is still 318.2 MB. Free memory was 266.5 MB in the beginning and 244.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2769.46 ms. Allocated memory was 318.2 MB in the beginning and 369.6 MB in the end (delta: 51.4 MB). Free memory was 244.7 MB in the beginning and 240.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 56.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 579 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 69 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 62 PlacesBefore, 26 PlacesAfterwards, 53 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 12 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 41 TotalNumberOfCompositions, 1270 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 37 SDtfs, 14 SDslu, 9 SDs, 0 SdLazy, 105 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 2699 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...