/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/safe036_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:46:42,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:46:42,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:46:42,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:46:42,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:46:42,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:46:42,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:46:42,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:46:42,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:46:42,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:46:42,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:46:42,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:46:42,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:46:42,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:46:42,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:46:42,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:46:42,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:46:42,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:46:42,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:46:42,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:46:42,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:46:42,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:46:42,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:46:42,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:46:42,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:46:42,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:46:42,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:46:42,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:46:42,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:46:42,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:46:42,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:46:42,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:46:42,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:46:42,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:46:42,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:46:42,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:46:42,088 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 01:46:42,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:46:42,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:46:42,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:46:42,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:46:42,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:46:42,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:46:42,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:46:42,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:46:42,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:46:42,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:46:42,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:46:42,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:46:42,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:46:42,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:46:42,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:46:42,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:46:42,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:46:42,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:46:42,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:46:42,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:46:42,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:46:42,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:46:42,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:46:42,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:46:42,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:46:42,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:46:42,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:46:42,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:46:42,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:46:42,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:46:42,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:46:42,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:46:42,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:46:42,433 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:46:42,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_power.opt.i [2020-10-16 01:46:42,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b31e90e2/d3c4c53fc8654ec7b573b8c08c6909bb/FLAGeebeae591 [2020-10-16 01:46:43,067 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:46:43,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_power.opt.i [2020-10-16 01:46:43,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b31e90e2/d3c4c53fc8654ec7b573b8c08c6909bb/FLAGeebeae591 [2020-10-16 01:46:43,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b31e90e2/d3c4c53fc8654ec7b573b8c08c6909bb [2020-10-16 01:46:43,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:46:43,371 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:46:43,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:43,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:46:43,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:46:43,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2458d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:43, skipping insertion in model container [2020-10-16 01:46:43,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:46:43" (1/1) ... [2020-10-16 01:46:43,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:46:43,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:46:43,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:43,892 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:46:43,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:46:44,055 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:46:44,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44 WrapperNode [2020-10-16 01:46:44,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:46:44,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:44,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:46:44,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:46:44,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (1/1) ... [2020-10-16 01:46:44,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (1/1) ... [2020-10-16 01:46:44,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:46:44,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:46:44,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:46:44,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:46:44,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (1/1) ... [2020-10-16 01:46:44,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (1/1) ... [2020-10-16 01:46:44,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (1/1) ... [2020-10-16 01:46:44,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (1/1) ... [2020-10-16 01:46:44,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (1/1) ... [2020-10-16 01:46:44,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (1/1) ... [2020-10-16 01:46:44,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (1/1) ... [2020-10-16 01:46:44,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:46:44,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:46:44,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:46:44,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:46:44,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (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 01:46:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:46:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:46:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:46:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:46:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:46:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:46:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:46:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:46:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:46:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:46:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:46:44,214 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 01:46:44,509 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:46:44,509 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:46:44,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:44 BoogieIcfgContainer [2020-10-16 01:46:44,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:46:44,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:46:44,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:46:44,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:46:44,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:46:43" (1/3) ... [2020-10-16 01:46:44,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd64f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:44, skipping insertion in model container [2020-10-16 01:46:44,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:46:44" (2/3) ... [2020-10-16 01:46:44,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd64f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:46:44, skipping insertion in model container [2020-10-16 01:46:44,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:46:44" (3/3) ... [2020-10-16 01:46:44,520 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_power.opt.i [2020-10-16 01:46:44,533 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:46:44,541 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:46:44,542 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:46:44,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,579 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,579 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,590 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,595 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,596 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:46:44,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 01:46:44,636 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:46:44,637 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:46:44,637 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:46:44,637 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:46:44,637 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:46:44,637 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:46:44,638 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:46:44,638 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:46:44,650 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 01:46:44,690 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-16 01:46:44,690 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:44,695 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 01:46:44,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 01:46:44,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 96 flow [2020-10-16 01:46:44,704 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:46:44,706 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 01:46:44,709 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 01:46:44,710 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 96 flow [2020-10-16 01:46:44,726 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2020-10-16 01:46:44,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:44,727 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 01:46:44,729 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 01:46:45,782 INFO L132 LiptonReduction]: Checked pairs total: 818 [2020-10-16 01:46:45,782 INFO L134 LiptonReduction]: Total number of compositions: 38 [2020-10-16 01:46:45,787 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1084 [2020-10-16 01:46:45,800 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2020-10-16 01:46:45,801 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:45,801 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:45,802 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 01:46:45,802 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:45,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1672959994, now seen corresponding path program 1 times [2020-10-16 01:46:45,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:45,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913773438] [2020-10-16 01:46:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:46,060 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 01:46:46,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913773438] [2020-10-16 01:46:46,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:46,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:46:46,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721196494] [2020-10-16 01:46:46,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:46,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:46,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:46,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:46,094 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 94 [2020-10-16 01:46:46,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand 4 states. [2020-10-16 01:46:46,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:46,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 94 [2020-10-16 01:46:46,098 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:46,143 INFO L129 PetriNetUnfolder]: 6/27 cut-off events. [2020-10-16 01:46:46,143 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:46:46,144 INFO L80 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 27 events. 6/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 56 event pairs, 0 based on Foata normal form. 4/30 useless extension candidates. Maximal degree in co-relation 46. Up to 11 conditions per place. [2020-10-16 01:46:46,145 INFO L132 encePairwiseOnDemand]: 89/94 looper letters, 5 selfloop transitions, 4 changer transitions 1/17 dead transitions. [2020-10-16 01:46:46,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 60 flow [2020-10-16 01:46:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:46,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2020-10-16 01:46:46,163 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2020-10-16 01:46:46,164 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2020-10-16 01:46:46,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2020-10-16 01:46:46,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:46,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2020-10-16 01:46:46,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:46,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:46,181 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:46,183 INFO L185 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 4 states and 280 transitions. [2020-10-16 01:46:46,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 60 flow [2020-10-16 01:46:46,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:46:46,190 INFO L241 Difference]: Finished difference. Result has 22 places, 14 transitions, 54 flow [2020-10-16 01:46:46,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2020-10-16 01:46:46,194 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2020-10-16 01:46:46,194 INFO L481 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 54 flow [2020-10-16 01:46:46,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:46,194 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:46,194 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:46,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:46:46,195 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:46,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:46,195 INFO L82 PathProgramCache]: Analyzing trace with hash 340114245, now seen corresponding path program 1 times [2020-10-16 01:46:46,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:46,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309301675] [2020-10-16 01:46:46,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:46,270 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 01:46:46,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309301675] [2020-10-16 01:46:46,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:46,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:46,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291596052] [2020-10-16 01:46:46,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:46:46,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:46,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:46:46,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:46:46,281 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 94 [2020-10-16 01:46:46,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 54 flow. Second operand 5 states. [2020-10-16 01:46:46,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:46,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 94 [2020-10-16 01:46:46,282 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:46,323 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2020-10-16 01:46:46,324 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2020-10-16 01:46:46,324 INFO L80 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 18 events. 2/18 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 5/23 useless extension candidates. Maximal degree in co-relation 44. Up to 8 conditions per place. [2020-10-16 01:46:46,325 INFO L132 encePairwiseOnDemand]: 89/94 looper letters, 1 selfloop transitions, 6 changer transitions 1/15 dead transitions. [2020-10-16 01:46:46,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 15 transitions, 75 flow [2020-10-16 01:46:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:46:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:46:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 345 transitions. [2020-10-16 01:46:46,328 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7340425531914894 [2020-10-16 01:46:46,329 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 345 transitions. [2020-10-16 01:46:46,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 345 transitions. [2020-10-16 01:46:46,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:46,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 345 transitions. [2020-10-16 01:46:46,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:46:46,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:46:46,333 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:46:46,333 INFO L185 Difference]: Start difference. First operand has 22 places, 14 transitions, 54 flow. Second operand 5 states and 345 transitions. [2020-10-16 01:46:46,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 15 transitions, 75 flow [2020-10-16 01:46:46,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 66 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:46:46,335 INFO L241 Difference]: Finished difference. Result has 26 places, 14 transitions, 70 flow [2020-10-16 01:46:46,335 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=14} [2020-10-16 01:46:46,335 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2020-10-16 01:46:46,336 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 70 flow [2020-10-16 01:46:46,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:46:46,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:46,336 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:46,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:46:46,337 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:46,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1680060485, now seen corresponding path program 1 times [2020-10-16 01:46:46,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:46,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147720982] [2020-10-16 01:46:46,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:46,404 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 01:46:46,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147720982] [2020-10-16 01:46:46,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:46,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:46,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107346607] [2020-10-16 01:46:46,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:46,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:46,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:46,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:46,410 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 94 [2020-10-16 01:46:46,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:46:46,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:46,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 94 [2020-10-16 01:46:46,411 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:46,434 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2020-10-16 01:46:46,435 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2020-10-16 01:46:46,435 INFO L80 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 22 events. 2/22 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 58. Up to 10 conditions per place. [2020-10-16 01:46:46,435 INFO L132 encePairwiseOnDemand]: 91/94 looper letters, 3 selfloop transitions, 1 changer transitions 1/15 dead transitions. [2020-10-16 01:46:46,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 15 transitions, 82 flow [2020-10-16 01:46:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2020-10-16 01:46:46,438 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7712765957446809 [2020-10-16 01:46:46,438 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2020-10-16 01:46:46,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2020-10-16 01:46:46,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:46,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2020-10-16 01:46:46,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:46,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:46,441 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:46,441 INFO L185 Difference]: Start difference. First operand has 26 places, 14 transitions, 70 flow. Second operand 4 states and 290 transitions. [2020-10-16 01:46:46,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 15 transitions, 82 flow [2020-10-16 01:46:46,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 52 flow, removed 5 selfloop flow, removed 7 redundant places. [2020-10-16 01:46:46,444 INFO L241 Difference]: Finished difference. Result has 24 places, 14 transitions, 47 flow [2020-10-16 01:46:46,444 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=47, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2020-10-16 01:46:46,444 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2020-10-16 01:46:46,444 INFO L481 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 47 flow [2020-10-16 01:46:46,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:46,445 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:46:46,445 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:46:46,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:46:46,445 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:46:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:46:46,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1975126419, now seen corresponding path program 2 times [2020-10-16 01:46:46,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:46:46,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851684945] [2020-10-16 01:46:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:46:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:46:46,489 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 01:46:46,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851684945] [2020-10-16 01:46:46,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:46:46,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:46:46,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225235025] [2020-10-16 01:46:46,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:46:46,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:46:46,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:46:46,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:46:46,493 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 94 [2020-10-16 01:46:46,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 47 flow. Second operand 4 states. [2020-10-16 01:46:46,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:46:46,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 94 [2020-10-16 01:46:46,494 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:46:46,511 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2020-10-16 01:46:46,512 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 01:46:46,512 INFO L80 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 1/19 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 38. Up to 4 conditions per place. [2020-10-16 01:46:46,512 INFO L132 encePairwiseOnDemand]: 91/94 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2020-10-16 01:46:46,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 14 transitions, 53 flow [2020-10-16 01:46:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:46:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:46:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2020-10-16 01:46:46,514 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7792553191489362 [2020-10-16 01:46:46,515 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2020-10-16 01:46:46,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2020-10-16 01:46:46,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:46:46,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2020-10-16 01:46:46,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:46:46,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:46:46,517 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:46:46,517 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 47 flow. Second operand 4 states and 293 transitions. [2020-10-16 01:46:46,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 14 transitions, 53 flow [2020-10-16 01:46:46,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 14 transitions, 52 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:46:46,519 INFO L241 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2020-10-16 01:46:46,519 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2020-10-16 01:46:46,519 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2020-10-16 01:46:46,519 INFO L481 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2020-10-16 01:46:46,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:46:46,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:46:46,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:46:46 BasicIcfg [2020-10-16 01:46:46,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:46:46,527 INFO L168 Benchmark]: Toolchain (without parser) took 3155.20 ms. Allocated memory was 251.1 MB in the beginning and 355.5 MB in the end (delta: 104.3 MB). Free memory was 206.5 MB in the beginning and 198.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 112.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:46,527 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:46:46,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.35 ms. Allocated memory was 251.1 MB in the beginning and 312.0 MB in the end (delta: 60.8 MB). Free memory was 206.5 MB in the beginning and 267.3 MB in the end (delta: -60.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:46,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.03 ms. Allocated memory is still 312.0 MB. Free memory was 267.3 MB in the beginning and 264.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:46,530 INFO L168 Benchmark]: Boogie Preprocessor took 25.48 ms. Allocated memory is still 312.0 MB. Free memory was 264.8 MB in the beginning and 262.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:46,531 INFO L168 Benchmark]: RCFGBuilder took 359.70 ms. Allocated memory is still 312.0 MB. Free memory was 262.2 MB in the beginning and 242.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:46,532 INFO L168 Benchmark]: TraceAbstraction took 2011.20 ms. Allocated memory was 312.0 MB in the beginning and 355.5 MB in the end (delta: 43.5 MB). Free memory was 242.9 MB in the beginning and 198.1 MB in the end (delta: 44.8 MB). Peak memory consumption was 88.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:46:46,536 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 683.35 ms. Allocated memory was 251.1 MB in the beginning and 312.0 MB in the end (delta: 60.8 MB). Free memory was 206.5 MB in the beginning and 267.3 MB in the end (delta: -60.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 68.03 ms. Allocated memory is still 312.0 MB. Free memory was 267.3 MB in the beginning and 264.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.48 ms. Allocated memory is still 312.0 MB. Free memory was 264.8 MB in the beginning and 262.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 359.70 ms. Allocated memory is still 312.0 MB. Free memory was 262.2 MB in the beginning and 242.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2011.20 ms. Allocated memory was 312.0 MB in the beginning and 355.5 MB in the end (delta: 43.5 MB). Free memory was 242.9 MB in the beginning and 198.1 MB in the end (delta: 44.8 MB). Peak memory consumption was 88.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 317 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 28 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 51 PlacesBefore, 19 PlacesAfterwards, 45 TransitionsBefore, 12 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 818 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 3 procedures, 55 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: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 12 SDtfs, 5 SDslu, 7 SDs, 0 SdLazy, 33 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=2, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...