/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/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:37:31,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:37:31,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:37:31,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:37:31,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:37:31,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:37:31,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:37:31,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:37:31,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:37:31,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:37:31,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:37:31,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:37:31,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:37:31,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:37:31,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:37:31,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:37:31,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:37:31,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:37:31,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:37:31,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:37:31,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:37:31,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:37:31,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:37:31,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:37:31,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:37:31,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:37:31,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:37:31,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:37:31,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:37:31,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:37:31,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:37:31,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:37:31,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:37:31,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:37:31,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:37:31,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:37:31,349 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 01:37:31,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:37:31,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:37:31,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:37:31,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:37:31,384 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:37:31,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:37:31,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:37:31,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:37:31,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:37:31,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:37:31,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:37:31,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:37:31,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:37:31,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:37:31,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:37:31,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:37:31,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:37:31,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:37:31,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:37:31,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:37:31,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:37:31,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:37:31,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:37:31,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:37:31,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:37:31,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:37:31,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:37:31,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:37:31,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:37:31,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:37:31,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:37:31,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:37:31,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:37:31,751 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:37:31,752 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-16 01:37:31,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda80680c/643f1a6475e3472cb6f5e9c8b7c3afb5/FLAGbffca90f0 [2020-10-16 01:37:32,276 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:37:32,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-16 01:37:32,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda80680c/643f1a6475e3472cb6f5e9c8b7c3afb5/FLAGbffca90f0 [2020-10-16 01:37:32,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda80680c/643f1a6475e3472cb6f5e9c8b7c3afb5 [2020-10-16 01:37:32,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:37:32,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:37:32,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:37:32,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:37:32,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:37:32,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:32" (1/1) ... [2020-10-16 01:37:32,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba399b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:32, skipping insertion in model container [2020-10-16 01:37:32,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:37:32" (1/1) ... [2020-10-16 01:37:32,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:37:32,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:37:32,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:37:32,993 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:37:33,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:37:33,252 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:37:33,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33 WrapperNode [2020-10-16 01:37:33,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:37:33,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:37:33,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:37:33,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:37:33,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (1/1) ... [2020-10-16 01:37:33,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (1/1) ... [2020-10-16 01:37:33,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:37:33,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:37:33,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:37:33,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:37:33,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (1/1) ... [2020-10-16 01:37:33,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (1/1) ... [2020-10-16 01:37:33,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (1/1) ... [2020-10-16 01:37:33,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (1/1) ... [2020-10-16 01:37:33,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (1/1) ... [2020-10-16 01:37:33,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (1/1) ... [2020-10-16 01:37:33,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (1/1) ... [2020-10-16 01:37:33,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:37:33,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:37:33,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:37:33,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:37:33,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (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 01:37:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:37:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:37:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:37:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:37:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:37:33,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:37:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:37:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:37:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:37:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:37:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:37:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:37:33,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:37:33,416 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 01:37:33,815 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:37:33,816 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:37:33,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:33 BoogieIcfgContainer [2020-10-16 01:37:33,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:37:33,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:37:33,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:37:33,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:37:33,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:37:32" (1/3) ... [2020-10-16 01:37:33,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e5e207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:33, skipping insertion in model container [2020-10-16 01:37:33,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:37:33" (2/3) ... [2020-10-16 01:37:33,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e5e207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:37:33, skipping insertion in model container [2020-10-16 01:37:33,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:37:33" (3/3) ... [2020-10-16 01:37:33,828 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-10-16 01:37:33,838 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:37:33,846 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:37:33,847 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:37:33,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,874 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,874 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,875 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,875 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,878 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,878 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,882 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,883 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,883 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,883 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,890 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,901 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:37:33,920 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:37:33,942 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:37:33,942 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:37:33,942 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:37:33,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:37:33,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:37:33,942 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:37:33,942 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:37:33,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:37:33,955 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:37:33,998 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:37:33,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:34,004 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:37:34,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:37:34,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:37:34,013 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:37:34,016 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:37:34,018 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:37:34,019 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:37:34,037 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:37:34,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:34,038 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:37:34,040 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:37:35,423 INFO L132 LiptonReduction]: Checked pairs total: 1636 [2020-10-16 01:37:35,423 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 01:37:35,426 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1415 [2020-10-16 01:37:35,434 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 01:37:35,435 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:35,435 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:35,436 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:35,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:35,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1555680932, now seen corresponding path program 1 times [2020-10-16 01:37:35,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:35,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841521250] [2020-10-16 01:37:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:35,669 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 01:37:35,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841521250] [2020-10-16 01:37:35,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:35,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:37:35,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060277172] [2020-10-16 01:37:35,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:35,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:35,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:35,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:35,703 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 112 [2020-10-16 01:37:35,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:37:35,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:35,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 112 [2020-10-16 01:37:35,707 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:35,728 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:37:35,729 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:35,729 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:37:35,730 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:37:35,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:37:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 01:37:35,749 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2020-10-16 01:37:35,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 01:37:35,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 01:37:35,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:35,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 01:37:35,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:35,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:35,767 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:35,770 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 286 transitions. [2020-10-16 01:37:35,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:37:35,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:37:35,776 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:37:35,779 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:37:35,781 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:37:35,781 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:37:35,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:35,781 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:35,782 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:35,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:37:35,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:35,783 INFO L82 PathProgramCache]: Analyzing trace with hash -360785109, now seen corresponding path program 1 times [2020-10-16 01:37:35,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:35,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3411816] [2020-10-16 01:37:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:35,861 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 01:37:35,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3411816] [2020-10-16 01:37:35,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:35,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:35,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632925036] [2020-10-16 01:37:35,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:35,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:35,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:35,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:35,867 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 01:37:35,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 01:37:35,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:35,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 01:37:35,868 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:35,921 INFO L129 PetriNetUnfolder]: 10/48 cut-off events. [2020-10-16 01:37:35,921 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 01:37:35,922 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 48 events. 10/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 143 event pairs, 1 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 88. Up to 15 conditions per place. [2020-10-16 01:37:35,923 INFO L132 encePairwiseOnDemand]: 107/112 looper letters, 7 selfloop transitions, 4 changer transitions 1/23 dead transitions. [2020-10-16 01:37:35,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 87 flow [2020-10-16 01:37:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:35,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2020-10-16 01:37:35,927 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7901785714285714 [2020-10-16 01:37:35,927 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2020-10-16 01:37:35,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2020-10-16 01:37:35,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:35,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2020-10-16 01:37:35,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:35,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:35,931 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:35,932 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 354 transitions. [2020-10-16 01:37:35,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 87 flow [2020-10-16 01:37:35,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 81 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:35,934 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 70 flow [2020-10-16 01:37:35,934 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 01:37:35,935 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:37:35,935 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 70 flow [2020-10-16 01:37:35,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:35,935 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:35,936 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:35,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:37:35,936 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:35,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1673781393, now seen corresponding path program 1 times [2020-10-16 01:37:35,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:35,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047335388] [2020-10-16 01:37:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:36,025 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 01:37:36,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047335388] [2020-10-16 01:37:36,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:36,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:37:36,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409782123] [2020-10-16 01:37:36,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:36,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:36,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:36,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:36,030 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 01:37:36,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:37:36,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:36,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 01:37:36,033 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:36,118 INFO L129 PetriNetUnfolder]: 6/46 cut-off events. [2020-10-16 01:37:36,118 INFO L130 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2020-10-16 01:37:36,119 INFO L80 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 46 events. 6/46 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 142 event pairs, 1 based on Foata normal form. 5/50 useless extension candidates. Maximal degree in co-relation 107. Up to 15 conditions per place. [2020-10-16 01:37:36,119 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 7 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2020-10-16 01:37:36,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 120 flow [2020-10-16 01:37:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:37:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:37:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2020-10-16 01:37:36,124 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7839285714285714 [2020-10-16 01:37:36,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2020-10-16 01:37:36,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2020-10-16 01:37:36,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:36,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2020-10-16 01:37:36,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:37:36,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:37:36,133 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:37:36,134 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 70 flow. Second operand 5 states and 439 transitions. [2020-10-16 01:37:36,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 120 flow [2020-10-16 01:37:36,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 109 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:36,137 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 99 flow [2020-10-16 01:37:36,137 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2020-10-16 01:37:36,138 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:37:36,138 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 99 flow [2020-10-16 01:37:36,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:36,138 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:36,138 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:36,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:37:36,139 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:36,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1278214402, now seen corresponding path program 1 times [2020-10-16 01:37:36,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:36,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572070406] [2020-10-16 01:37:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:36,230 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 01:37:36,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572070406] [2020-10-16 01:37:36,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:36,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:36,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055414299] [2020-10-16 01:37:36,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:36,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:36,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:36,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:36,235 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 01:37:36,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 99 flow. Second operand 4 states. [2020-10-16 01:37:36,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:36,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 01:37:36,236 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:36,272 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-16 01:37:36,272 INFO L130 PetriNetUnfolder]: For 72/74 co-relation queries the response was YES. [2020-10-16 01:37:36,272 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 53 events. 4/53 cut-off events. For 72/74 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 183 event pairs, 0 based on Foata normal form. 5/57 useless extension candidates. Maximal degree in co-relation 139. Up to 17 conditions per place. [2020-10-16 01:37:36,273 INFO L132 encePairwiseOnDemand]: 107/112 looper letters, 7 selfloop transitions, 4 changer transitions 3/25 dead transitions. [2020-10-16 01:37:36,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 151 flow [2020-10-16 01:37:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2020-10-16 01:37:36,275 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7879464285714286 [2020-10-16 01:37:36,275 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2020-10-16 01:37:36,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2020-10-16 01:37:36,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:36,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2020-10-16 01:37:36,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:36,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:36,279 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:36,279 INFO L185 Difference]: Start difference. First operand has 36 places, 21 transitions, 99 flow. Second operand 4 states and 353 transitions. [2020-10-16 01:37:36,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 151 flow [2020-10-16 01:37:36,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 127 flow, removed 6 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:36,282 INFO L241 Difference]: Finished difference. Result has 34 places, 21 transitions, 96 flow [2020-10-16 01:37:36,282 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2020-10-16 01:37:36,282 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:37:36,282 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 96 flow [2020-10-16 01:37:36,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:36,283 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:36,283 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:36,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:37:36,283 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:36,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:36,284 INFO L82 PathProgramCache]: Analyzing trace with hash 36704874, now seen corresponding path program 2 times [2020-10-16 01:37:36,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:36,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317522165] [2020-10-16 01:37:36,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:36,359 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 01:37:36,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317522165] [2020-10-16 01:37:36,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:36,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:36,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410185695] [2020-10-16 01:37:36,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:36,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:36,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:36,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:36,363 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:37:36,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 96 flow. Second operand 4 states. [2020-10-16 01:37:36,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:36,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:37:36,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:36,423 INFO L129 PetriNetUnfolder]: 63/141 cut-off events. [2020-10-16 01:37:36,423 INFO L130 PetriNetUnfolder]: For 286/330 co-relation queries the response was YES. [2020-10-16 01:37:36,427 INFO L80 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 141 events. 63/141 cut-off events. For 286/330 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 606 event pairs, 21 based on Foata normal form. 24/155 useless extension candidates. Maximal degree in co-relation 346. Up to 92 conditions per place. [2020-10-16 01:37:36,428 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 6 selfloop transitions, 4 changer transitions 7/31 dead transitions. [2020-10-16 01:37:36,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 150 flow [2020-10-16 01:37:36,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:37:36,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:37:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 01:37:36,433 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7553571428571428 [2020-10-16 01:37:36,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 01:37:36,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 01:37:36,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:36,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 01:37:36,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:37:36,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:37:36,439 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:37:36,440 INFO L185 Difference]: Start difference. First operand has 34 places, 21 transitions, 96 flow. Second operand 5 states and 423 transitions. [2020-10-16 01:37:36,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 150 flow [2020-10-16 01:37:36,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 135 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:36,443 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 121 flow [2020-10-16 01:37:36,443 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2020-10-16 01:37:36,443 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:37:36,444 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 121 flow [2020-10-16 01:37:36,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:36,444 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:36,444 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:36,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:37:36,445 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:36,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:36,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1592741205, now seen corresponding path program 1 times [2020-10-16 01:37:36,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:36,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738100655] [2020-10-16 01:37:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:36,545 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 01:37:36,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738100655] [2020-10-16 01:37:36,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:36,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:37:36,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882134098] [2020-10-16 01:37:36,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:37:36,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:36,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:37:36,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:37:36,549 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:37:36,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 121 flow. Second operand 5 states. [2020-10-16 01:37:36,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:36,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:37:36,550 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:36,615 INFO L129 PetriNetUnfolder]: 36/101 cut-off events. [2020-10-16 01:37:36,615 INFO L130 PetriNetUnfolder]: For 363/447 co-relation queries the response was YES. [2020-10-16 01:37:36,616 INFO L80 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 101 events. 36/101 cut-off events. For 363/447 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 405 event pairs, 3 based on Foata normal form. 38/135 useless extension candidates. Maximal degree in co-relation 368. Up to 73 conditions per place. [2020-10-16 01:37:36,617 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 6 selfloop transitions, 7 changer transitions 7/34 dead transitions. [2020-10-16 01:37:36,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 219 flow [2020-10-16 01:37:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:37:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:37:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 01:37:36,620 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2020-10-16 01:37:36,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 01:37:36,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 01:37:36,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:36,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 01:37:36,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:37:36,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:37:36,624 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:37:36,624 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 121 flow. Second operand 6 states and 507 transitions. [2020-10-16 01:37:36,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 219 flow [2020-10-16 01:37:36,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 211 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:36,627 INFO L241 Difference]: Finished difference. Result has 41 places, 27 transitions, 173 flow [2020-10-16 01:37:36,628 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2020-10-16 01:37:36,628 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 01:37:36,628 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 173 flow [2020-10-16 01:37:36,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:37:36,629 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:36,629 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:36,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:37:36,629 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:36,629 INFO L82 PathProgramCache]: Analyzing trace with hash 913461771, now seen corresponding path program 1 times [2020-10-16 01:37:36,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:36,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553639333] [2020-10-16 01:37:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:36,685 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 01:37:36,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553639333] [2020-10-16 01:37:36,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:36,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:37:36,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555624280] [2020-10-16 01:37:36,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:37:36,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:36,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:37:36,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:37:36,689 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:37:36,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 173 flow. Second operand 6 states. [2020-10-16 01:37:36,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:36,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:37:36,690 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:36,756 INFO L129 PetriNetUnfolder]: 16/63 cut-off events. [2020-10-16 01:37:36,756 INFO L130 PetriNetUnfolder]: For 293/357 co-relation queries the response was YES. [2020-10-16 01:37:36,757 INFO L80 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 63 events. 16/63 cut-off events. For 293/357 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 196 event pairs, 0 based on Foata normal form. 33/93 useless extension candidates. Maximal degree in co-relation 270. Up to 43 conditions per place. [2020-10-16 01:37:36,758 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 3 selfloop transitions, 10 changer transitions 4/30 dead transitions. [2020-10-16 01:37:36,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 239 flow [2020-10-16 01:37:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:37:36,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:37:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 01:37:36,761 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7461734693877551 [2020-10-16 01:37:36,761 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 01:37:36,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 01:37:36,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:36,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 01:37:36,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:37:36,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:37:36,765 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:37:36,765 INFO L185 Difference]: Start difference. First operand has 41 places, 27 transitions, 173 flow. Second operand 7 states and 585 transitions. [2020-10-16 01:37:36,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 239 flow [2020-10-16 01:37:36,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 199 flow, removed 16 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:36,769 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:36,770 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2020-10-16 01:37:36,770 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 01:37:36,770 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 171 flow [2020-10-16 01:37:36,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:37:36,770 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:36,771 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:36,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:37:36,771 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:36,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:36,771 INFO L82 PathProgramCache]: Analyzing trace with hash 263191936, now seen corresponding path program 1 times [2020-10-16 01:37:36,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:36,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821291113] [2020-10-16 01:37:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:36,807 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 01:37:36,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821291113] [2020-10-16 01:37:36,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:36,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:37:36,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346072333] [2020-10-16 01:37:36,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:36,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:36,810 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 01:37:36,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 171 flow. Second operand 4 states. [2020-10-16 01:37:36,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:36,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 01:37:36,811 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:36,835 INFO L129 PetriNetUnfolder]: 16/66 cut-off events. [2020-10-16 01:37:36,835 INFO L130 PetriNetUnfolder]: For 165/178 co-relation queries the response was YES. [2020-10-16 01:37:36,836 INFO L80 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 66 events. 16/66 cut-off events. For 165/178 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 217 event pairs, 0 based on Foata normal form. 3/64 useless extension candidates. Maximal degree in co-relation 222. Up to 33 conditions per place. [2020-10-16 01:37:36,837 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 1 changer transitions 3/26 dead transitions. [2020-10-16 01:37:36,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 26 transitions, 171 flow [2020-10-16 01:37:36,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2020-10-16 01:37:36,839 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8080357142857143 [2020-10-16 01:37:36,839 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2020-10-16 01:37:36,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2020-10-16 01:37:36,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:36,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2020-10-16 01:37:36,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:36,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:36,842 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:36,842 INFO L185 Difference]: Start difference. First operand has 44 places, 26 transitions, 171 flow. Second operand 4 states and 362 transitions. [2020-10-16 01:37:36,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 26 transitions, 171 flow [2020-10-16 01:37:36,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 127 flow, removed 14 selfloop flow, removed 7 redundant places. [2020-10-16 01:37:36,845 INFO L241 Difference]: Finished difference. Result has 40 places, 23 transitions, 111 flow [2020-10-16 01:37:36,845 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2020-10-16 01:37:36,845 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2020-10-16 01:37:36,846 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 111 flow [2020-10-16 01:37:36,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:36,846 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:36,846 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:36,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:37:36,846 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:36,847 INFO L82 PathProgramCache]: Analyzing trace with hash 834299988, now seen corresponding path program 2 times [2020-10-16 01:37:36,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:36,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671479594] [2020-10-16 01:37:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:36,873 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 01:37:36,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671479594] [2020-10-16 01:37:36,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:36,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:36,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734050475] [2020-10-16 01:37:36,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:36,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:36,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:36,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:36,877 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 01:37:36,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 111 flow. Second operand 3 states. [2020-10-16 01:37:36,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:36,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 01:37:36,877 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:36,889 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2020-10-16 01:37:36,890 INFO L130 PetriNetUnfolder]: For 35/38 co-relation queries the response was YES. [2020-10-16 01:37:36,890 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 40 events. 9/40 cut-off events. For 35/38 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 2/40 useless extension candidates. Maximal degree in co-relation 111. Up to 12 conditions per place. [2020-10-16 01:37:36,890 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 01:37:36,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 23 transitions, 120 flow [2020-10-16 01:37:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2020-10-16 01:37:36,893 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8154761904761905 [2020-10-16 01:37:36,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2020-10-16 01:37:36,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2020-10-16 01:37:36,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:36,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2020-10-16 01:37:36,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:36,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:36,895 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:36,895 INFO L185 Difference]: Start difference. First operand has 40 places, 23 transitions, 111 flow. Second operand 3 states and 274 transitions. [2020-10-16 01:37:36,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 23 transitions, 120 flow [2020-10-16 01:37:36,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 115 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:37:36,897 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2020-10-16 01:37:36,897 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2020-10-16 01:37:36,898 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:37:36,898 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2020-10-16 01:37:36,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:36,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:37:36,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:37:36 BasicIcfg [2020-10-16 01:37:36,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:37:36,906 INFO L168 Benchmark]: Toolchain (without parser) took 4330.82 ms. Allocated memory was 247.5 MB in the beginning and 367.5 MB in the end (delta: 120.1 MB). Free memory was 203.2 MB in the beginning and 221.0 MB in the end (delta: -17.8 MB). Peak memory consumption was 102.2 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:36,907 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 247.5 MB. Free memory was 225.5 MB in the beginning and 224.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 01:37:36,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.05 ms. Allocated memory was 247.5 MB in the beginning and 304.6 MB in the end (delta: 57.1 MB). Free memory was 203.2 MB in the beginning and 260.5 MB in the end (delta: -57.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:36,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 304.6 MB. Free memory was 260.5 MB in the beginning and 257.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:36,909 INFO L168 Benchmark]: Boogie Preprocessor took 28.35 ms. Allocated memory is still 304.6 MB. Free memory was 257.9 MB in the beginning and 256.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:36,910 INFO L168 Benchmark]: RCFGBuilder took 485.14 ms. Allocated memory is still 304.6 MB. Free memory was 256.2 MB in the beginning and 234.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:36,911 INFO L168 Benchmark]: TraceAbstraction took 3083.10 ms. Allocated memory was 304.6 MB in the beginning and 367.5 MB in the end (delta: 62.9 MB). Free memory was 233.3 MB in the beginning and 221.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 75.2 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:36,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 247.5 MB. Free memory was 225.5 MB in the beginning and 224.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 678.05 ms. Allocated memory was 247.5 MB in the beginning and 304.6 MB in the end (delta: 57.1 MB). Free memory was 203.2 MB in the beginning and 260.5 MB in the end (delta: -57.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.59 ms. Allocated memory is still 304.6 MB. Free memory was 260.5 MB in the beginning and 257.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.35 ms. Allocated memory is still 304.6 MB. Free memory was 257.9 MB in the beginning and 256.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 485.14 ms. Allocated memory is still 304.6 MB. Free memory was 256.2 MB in the beginning and 234.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3083.10 ms. Allocated memory was 304.6 MB in the beginning and 367.5 MB in the end (delta: 62.9 MB). Free memory was 233.3 MB in the beginning and 221.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 75.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 608 VarBasedMoverChecksPositive, 56 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 1636 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, 69 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: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 40 SDtfs, 18 SDslu, 20 SDs, 0 SdLazy, 129 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=6, 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, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3617 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...