/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/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:39:45,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:39:45,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:39:45,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:39:45,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:39:45,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:39:45,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:39:45,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:39:45,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:39:45,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:39:45,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:39:45,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:39:45,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:39:45,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:39:45,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:39:45,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:39:45,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:39:45,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:39:45,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:39:45,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:39:45,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:39:45,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:39:45,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:39:45,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:39:45,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:39:45,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:39:45,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:39:45,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:39:45,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:39:45,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:39:45,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:39:45,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:39:45,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:39:45,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:39:45,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:39:45,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:39:45,142 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 01:39:45,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:39:45,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:39:45,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:39:45,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:39:45,186 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:39:45,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:39:45,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:39:45,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:39:45,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:39:45,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:39:45,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:39:45,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:39:45,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:39:45,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:39:45,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:39:45,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:39:45,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:39:45,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:39:45,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:39:45,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:39:45,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:39:45,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:39:45,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:39:45,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:39:45,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:39:45,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:39:45,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:39:45,194 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:39:45,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:39:45,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:39:45,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:39:45,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:39:45,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:39:45,549 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:39:45,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-16 01:39:45,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77e2d871/04783d9b07924e35a73a01521711392f/FLAG68d3e4194 [2020-10-16 01:39:46,074 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:39:46,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-16 01:39:46,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77e2d871/04783d9b07924e35a73a01521711392f/FLAG68d3e4194 [2020-10-16 01:39:46,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77e2d871/04783d9b07924e35a73a01521711392f [2020-10-16 01:39:46,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:39:46,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:39:46,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:39:46,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:39:46,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:39:46,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:46" (1/1) ... [2020-10-16 01:39:46,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345ae72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:46, skipping insertion in model container [2020-10-16 01:39:46,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:46" (1/1) ... [2020-10-16 01:39:46,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:39:46,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:39:46,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:39:46,783 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:39:46,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:39:47,050 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:39:47,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47 WrapperNode [2020-10-16 01:39:47,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:39:47,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:39:47,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:39:47,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:39:47,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (1/1) ... [2020-10-16 01:39:47,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (1/1) ... [2020-10-16 01:39:47,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:39:47,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:39:47,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:39:47,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:39:47,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (1/1) ... [2020-10-16 01:39:47,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (1/1) ... [2020-10-16 01:39:47,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (1/1) ... [2020-10-16 01:39:47,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (1/1) ... [2020-10-16 01:39:47,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (1/1) ... [2020-10-16 01:39:47,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (1/1) ... [2020-10-16 01:39:47,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (1/1) ... [2020-10-16 01:39:47,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:39:47,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:39:47,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:39:47,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:39:47,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (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 01:39:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:39:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:39:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:39:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:39:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:39:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:39:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:39:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:39:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:39:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:39:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:39:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:39:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:39:47,215 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 01:39:47,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:39:47,547 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:39:47,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:47 BoogieIcfgContainer [2020-10-16 01:39:47,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:39:47,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:39:47,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:39:47,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:39:47,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:39:46" (1/3) ... [2020-10-16 01:39:47,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f3bd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:47, skipping insertion in model container [2020-10-16 01:39:47,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:47" (2/3) ... [2020-10-16 01:39:47,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f3bd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:47, skipping insertion in model container [2020-10-16 01:39:47,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:47" (3/3) ... [2020-10-16 01:39:47,558 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-10-16 01:39:47,571 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:39:47,579 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:39:47,580 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:39:47,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,615 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,616 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,619 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,619 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,620 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,620 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,621 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,626 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,626 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,627 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,627 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,633 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,634 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,640 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,640 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,643 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:47,658 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:39:47,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:39:47,678 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:39:47,678 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:39:47,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:39:47,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:39:47,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:39:47,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:39:47,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:39:47,693 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:39:47,746 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:39:47,746 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:47,755 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 01:39:47,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:39:47,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:39:47,772 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:39:47,775 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:39:47,778 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:39:47,779 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:39:47,822 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:39:47,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:47,823 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 43 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 01:39:47,825 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:39:49,219 INFO L132 LiptonReduction]: Checked pairs total: 1630 [2020-10-16 01:39:49,219 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 01:39:49,223 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1453 [2020-10-16 01:39:49,241 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 01:39:49,241 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:49,242 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:49,243 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:49,244 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:49,250 INFO L82 PathProgramCache]: Analyzing trace with hash 301645759, now seen corresponding path program 1 times [2020-10-16 01:39:49,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:49,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883943062] [2020-10-16 01:39:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:49,487 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 01:39:49,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883943062] [2020-10-16 01:39:49,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:49,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:49,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644022271] [2020-10-16 01:39:49,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:49,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:49,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:49,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:49,518 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2020-10-16 01:39:49,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 01:39:49,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:49,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2020-10-16 01:39:49,522 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:49,550 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2020-10-16 01:39:49,550 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:49,551 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 1 based on Foata normal form. 5/30 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2020-10-16 01:39:49,552 INFO L132 encePairwiseOnDemand]: 108/113 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:39:49,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 59 flow [2020-10-16 01:39:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:49,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2020-10-16 01:39:49,576 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8407079646017699 [2020-10-16 01:39:49,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2020-10-16 01:39:49,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2020-10-16 01:39:49,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:49,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2020-10-16 01:39:49,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:49,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:49,602 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:49,604 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 285 transitions. [2020-10-16 01:39:49,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 59 flow [2020-10-16 01:39:49,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:39:49,612 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 01:39:49,614 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 01:39:49,615 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:39:49,615 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 01:39:49,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:49,616 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:49,616 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:49,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:39:49,616 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:49,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:49,617 INFO L82 PathProgramCache]: Analyzing trace with hash 761083000, now seen corresponding path program 1 times [2020-10-16 01:39:49,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:49,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775991120] [2020-10-16 01:39:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:49,682 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 01:39:49,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775991120] [2020-10-16 01:39:49,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:49,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:49,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959236541] [2020-10-16 01:39:49,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:49,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:49,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:49,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:49,688 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 113 [2020-10-16 01:39:49,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 01:39:49,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:49,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 113 [2020-10-16 01:39:49,690 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:49,705 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2020-10-16 01:39:49,706 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 01:39:49,706 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 25 events. 3/25 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 37 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 42. Up to 10 conditions per place. [2020-10-16 01:39:49,707 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 01:39:49,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 65 flow [2020-10-16 01:39:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 01:39:49,710 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8348082595870207 [2020-10-16 01:39:49,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 01:39:49,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 01:39:49,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:49,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 01:39:49,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:49,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:49,713 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:49,714 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 283 transitions. [2020-10-16 01:39:49,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 65 flow [2020-10-16 01:39:49,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:39:49,715 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 64 flow [2020-10-16 01:39:49,716 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-10-16 01:39:49,717 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 01:39:49,717 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 64 flow [2020-10-16 01:39:49,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:49,717 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:49,717 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:49,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:39:49,718 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:49,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:49,718 INFO L82 PathProgramCache]: Analyzing trace with hash 2118734622, now seen corresponding path program 1 times [2020-10-16 01:39:49,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:49,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615200334] [2020-10-16 01:39:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:49,796 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 01:39:49,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615200334] [2020-10-16 01:39:49,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:49,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:49,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007440698] [2020-10-16 01:39:49,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:49,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:49,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:49,804 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 113 [2020-10-16 01:39:49,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 64 flow. Second operand 4 states. [2020-10-16 01:39:49,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:49,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 113 [2020-10-16 01:39:49,805 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:49,845 INFO L129 PetriNetUnfolder]: 4/32 cut-off events. [2020-10-16 01:39:49,845 INFO L130 PetriNetUnfolder]: For 25/27 co-relation queries the response was YES. [2020-10-16 01:39:49,846 INFO L80 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 32 events. 4/32 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 66 event pairs, 1 based on Foata normal form. 5/37 useless extension candidates. Maximal degree in co-relation 60. Up to 13 conditions per place. [2020-10-16 01:39:49,846 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 1 selfloop transitions, 3 changer transitions 1/20 dead transitions. [2020-10-16 01:39:49,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 79 flow [2020-10-16 01:39:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:39:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:39:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2020-10-16 01:39:49,849 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8030973451327433 [2020-10-16 01:39:49,849 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2020-10-16 01:39:49,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2020-10-16 01:39:49,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:49,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2020-10-16 01:39:49,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:39:49,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:39:49,853 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:39:49,853 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 64 flow. Second operand 4 states and 363 transitions. [2020-10-16 01:39:49,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 79 flow [2020-10-16 01:39:49,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 73 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:39:49,855 INFO L241 Difference]: Finished difference. Result has 32 places, 19 transitions, 74 flow [2020-10-16 01:39:49,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2020-10-16 01:39:49,856 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 01:39:49,856 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 74 flow [2020-10-16 01:39:49,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:49,856 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:49,857 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:49,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:39:49,857 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash -437053360, now seen corresponding path program 1 times [2020-10-16 01:39:49,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:49,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953590187] [2020-10-16 01:39:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:49,956 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 01:39:49,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953590187] [2020-10-16 01:39:49,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:49,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:49,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470884643] [2020-10-16 01:39:49,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:49,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:49,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:49,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:49,960 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 113 [2020-10-16 01:39:49,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 74 flow. Second operand 4 states. [2020-10-16 01:39:49,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:49,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 113 [2020-10-16 01:39:49,961 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:50,015 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2020-10-16 01:39:50,016 INFO L130 PetriNetUnfolder]: For 246/279 co-relation queries the response was YES. [2020-10-16 01:39:50,017 INFO L80 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 96 events. 42/96 cut-off events. For 246/279 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 350 event pairs, 18 based on Foata normal form. 17/105 useless extension candidates. Maximal degree in co-relation 241. Up to 61 conditions per place. [2020-10-16 01:39:50,018 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 7 selfloop transitions, 7 changer transitions 2/29 dead transitions. [2020-10-16 01:39:50,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 126 flow [2020-10-16 01:39:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:39:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:39:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2020-10-16 01:39:50,021 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7929203539823009 [2020-10-16 01:39:50,021 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2020-10-16 01:39:50,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2020-10-16 01:39:50,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:50,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2020-10-16 01:39:50,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:39:50,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:39:50,024 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:39:50,025 INFO L185 Difference]: Start difference. First operand has 32 places, 19 transitions, 74 flow. Second operand 5 states and 448 transitions. [2020-10-16 01:39:50,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 126 flow [2020-10-16 01:39:50,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 114 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:39:50,027 INFO L241 Difference]: Finished difference. Result has 35 places, 25 transitions, 116 flow [2020-10-16 01:39:50,027 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2020-10-16 01:39:50,028 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 01:39:50,028 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 116 flow [2020-10-16 01:39:50,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:50,028 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:50,028 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:50,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:39:50,029 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:50,029 INFO L82 PathProgramCache]: Analyzing trace with hash -663612903, now seen corresponding path program 1 times [2020-10-16 01:39:50,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:50,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7195937] [2020-10-16 01:39:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:50,123 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 01:39:50,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7195937] [2020-10-16 01:39:50,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:50,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:39:50,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760464162] [2020-10-16 01:39:50,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:39:50,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:50,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:39:50,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:39:50,127 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 113 [2020-10-16 01:39:50,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 116 flow. Second operand 5 states. [2020-10-16 01:39:50,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:50,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 113 [2020-10-16 01:39:50,128 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:50,200 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2020-10-16 01:39:50,200 INFO L130 PetriNetUnfolder]: For 209/340 co-relation queries the response was YES. [2020-10-16 01:39:50,201 INFO L80 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 76 events. 25/76 cut-off events. For 209/340 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 264 event pairs, 3 based on Foata normal form. 43/115 useless extension candidates. Maximal degree in co-relation 269. Up to 52 conditions per place. [2020-10-16 01:39:50,202 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 13 changer transitions 4/35 dead transitions. [2020-10-16 01:39:50,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 218 flow [2020-10-16 01:39:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:39:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:39:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2020-10-16 01:39:50,205 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7914032869785083 [2020-10-16 01:39:50,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2020-10-16 01:39:50,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2020-10-16 01:39:50,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:50,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2020-10-16 01:39:50,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:39:50,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:39:50,209 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:39:50,209 INFO L185 Difference]: Start difference. First operand has 35 places, 25 transitions, 116 flow. Second operand 7 states and 626 transitions. [2020-10-16 01:39:50,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 218 flow [2020-10-16 01:39:50,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:39:50,213 INFO L241 Difference]: Finished difference. Result has 43 places, 31 transitions, 200 flow [2020-10-16 01:39:50,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2020-10-16 01:39:50,213 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2020-10-16 01:39:50,213 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 200 flow [2020-10-16 01:39:50,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:39:50,214 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:50,214 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:50,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:39:50,214 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:50,215 INFO L82 PathProgramCache]: Analyzing trace with hash -919620178, now seen corresponding path program 1 times [2020-10-16 01:39:50,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:50,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384138896] [2020-10-16 01:39:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:50,244 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 01:39:50,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384138896] [2020-10-16 01:39:50,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:50,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:50,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636226852] [2020-10-16 01:39:50,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:50,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:50,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:50,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:50,248 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2020-10-16 01:39:50,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 200 flow. Second operand 3 states. [2020-10-16 01:39:50,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:50,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2020-10-16 01:39:50,249 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:50,279 INFO L129 PetriNetUnfolder]: 23/87 cut-off events. [2020-10-16 01:39:50,279 INFO L130 PetriNetUnfolder]: For 438/547 co-relation queries the response was YES. [2020-10-16 01:39:50,280 INFO L80 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 87 events. 23/87 cut-off events. For 438/547 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 379 event pairs, 3 based on Foata normal form. 11/94 useless extension candidates. Maximal degree in co-relation 354. Up to 64 conditions per place. [2020-10-16 01:39:50,281 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 3 selfloop transitions, 3 changer transitions 6/31 dead transitions. [2020-10-16 01:39:50,281 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 212 flow [2020-10-16 01:39:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2020-10-16 01:39:50,283 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.831858407079646 [2020-10-16 01:39:50,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2020-10-16 01:39:50,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2020-10-16 01:39:50,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:50,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2020-10-16 01:39:50,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:50,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:50,286 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:50,287 INFO L185 Difference]: Start difference. First operand has 43 places, 31 transitions, 200 flow. Second operand 3 states and 282 transitions. [2020-10-16 01:39:50,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 212 flow [2020-10-16 01:39:50,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 182 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:39:50,292 INFO L241 Difference]: Finished difference. Result has 44 places, 25 transitions, 141 flow [2020-10-16 01:39:50,292 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2020-10-16 01:39:50,292 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 01:39:50,292 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 141 flow [2020-10-16 01:39:50,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:50,293 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:50,293 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:50,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:39:50,293 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:50,294 INFO L82 PathProgramCache]: Analyzing trace with hash 94712342, now seen corresponding path program 1 times [2020-10-16 01:39:50,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:50,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392739270] [2020-10-16 01:39:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:50,369 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 01:39:50,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392739270] [2020-10-16 01:39:50,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:50,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:39:50,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495195787] [2020-10-16 01:39:50,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:39:50,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:50,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:39:50,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:39:50,373 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 113 [2020-10-16 01:39:50,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 141 flow. Second operand 6 states. [2020-10-16 01:39:50,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:50,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 113 [2020-10-16 01:39:50,374 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:50,432 INFO L129 PetriNetUnfolder]: 14/53 cut-off events. [2020-10-16 01:39:50,432 INFO L130 PetriNetUnfolder]: For 221/258 co-relation queries the response was YES. [2020-10-16 01:39:50,432 INFO L80 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 53 events. 14/53 cut-off events. For 221/258 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 145 event pairs, 0 based on Foata normal form. 21/72 useless extension candidates. Maximal degree in co-relation 200. Up to 26 conditions per place. [2020-10-16 01:39:50,433 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 2 selfloop transitions, 10 changer transitions 6/29 dead transitions. [2020-10-16 01:39:50,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 29 transitions, 205 flow [2020-10-16 01:39:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:39:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:39:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2020-10-16 01:39:50,436 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7838179519595448 [2020-10-16 01:39:50,436 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2020-10-16 01:39:50,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2020-10-16 01:39:50,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:50,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2020-10-16 01:39:50,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:39:50,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:39:50,440 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:39:50,441 INFO L185 Difference]: Start difference. First operand has 44 places, 25 transitions, 141 flow. Second operand 7 states and 620 transitions. [2020-10-16 01:39:50,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 29 transitions, 205 flow [2020-10-16 01:39:50,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 178 flow, removed 12 selfloop flow, removed 4 redundant places. [2020-10-16 01:39:50,444 INFO L241 Difference]: Finished difference. Result has 45 places, 23 transitions, 144 flow [2020-10-16 01:39:50,444 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=45, PETRI_TRANSITIONS=23} [2020-10-16 01:39:50,444 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 01:39:50,444 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 23 transitions, 144 flow [2020-10-16 01:39:50,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:39:50,445 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:50,445 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 01:39:50,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:39:50,445 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:50,446 INFO L82 PathProgramCache]: Analyzing trace with hash -996678906, now seen corresponding path program 1 times [2020-10-16 01:39:50,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:50,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953589516] [2020-10-16 01:39:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:50,476 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 01:39:50,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953589516] [2020-10-16 01:39:50,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:50,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:39:50,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579657695] [2020-10-16 01:39:50,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:50,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:50,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:50,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:50,480 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 113 [2020-10-16 01:39:50,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 23 transitions, 144 flow. Second operand 4 states. [2020-10-16 01:39:50,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:50,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 113 [2020-10-16 01:39:50,480 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:50,494 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 01:39:50,494 INFO L130 PetriNetUnfolder]: For 50/56 co-relation queries the response was YES. [2020-10-16 01:39:50,494 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 25 events. 5/25 cut-off events. For 50/56 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 84. Up to 9 conditions per place. [2020-10-16 01:39:50,495 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 01:39:50,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 22 transitions, 136 flow [2020-10-16 01:39:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:39:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:39:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 364 transitions. [2020-10-16 01:39:50,497 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8053097345132744 [2020-10-16 01:39:50,497 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 364 transitions. [2020-10-16 01:39:50,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 364 transitions. [2020-10-16 01:39:50,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:50,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 364 transitions. [2020-10-16 01:39:50,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:39:50,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:39:50,499 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:39:50,500 INFO L185 Difference]: Start difference. First operand has 45 places, 23 transitions, 144 flow. Second operand 4 states and 364 transitions. [2020-10-16 01:39:50,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 22 transitions, 136 flow [2020-10-16 01:39:50,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 96 flow, removed 6 selfloop flow, removed 9 redundant places. [2020-10-16 01:39:50,501 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 01:39:50,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 01:39:50,502 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:39:50,502 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 01:39:50,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:50,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:39:50,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:39:50 BasicIcfg [2020-10-16 01:39:50,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:39:50,509 INFO L168 Benchmark]: Toolchain (without parser) took 4153.77 ms. Allocated memory was 252.2 MB in the beginning and 371.2 MB in the end (delta: 119.0 MB). Free memory was 205.3 MB in the beginning and 242.3 MB in the end (delta: -37.0 MB). Peak memory consumption was 82.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:50,510 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:39:50,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.49 ms. Allocated memory was 252.2 MB in the beginning and 315.6 MB in the end (delta: 63.4 MB). Free memory was 205.3 MB in the beginning and 268.1 MB in the end (delta: -62.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:50,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.03 ms. Allocated memory is still 315.6 MB. Free memory was 268.1 MB in the beginning and 265.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:50,512 INFO L168 Benchmark]: Boogie Preprocessor took 28.17 ms. Allocated memory is still 315.6 MB. Free memory was 265.6 MB in the beginning and 263.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:50,513 INFO L168 Benchmark]: RCFGBuilder took 418.35 ms. Allocated memory is still 315.6 MB. Free memory was 263.1 MB in the beginning and 241.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:50,514 INFO L168 Benchmark]: TraceAbstraction took 2955.89 ms. Allocated memory was 315.6 MB in the beginning and 371.2 MB in the end (delta: 55.6 MB). Free memory was 241.3 MB in the beginning and 242.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:50,518 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 695.49 ms. Allocated memory was 252.2 MB in the beginning and 315.6 MB in the end (delta: 63.4 MB). Free memory was 205.3 MB in the beginning and 268.1 MB in the end (delta: -62.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.03 ms. Allocated memory is still 315.6 MB. Free memory was 268.1 MB in the beginning and 265.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.17 ms. Allocated memory is still 315.6 MB. Free memory was 265.6 MB in the beginning and 263.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 418.35 ms. Allocated memory is still 315.6 MB. Free memory was 263.1 MB in the beginning and 241.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2955.89 ms. Allocated memory was 315.6 MB in the beginning and 371.2 MB in the end (delta: 55.6 MB). Free memory was 241.3 MB in the beginning and 242.3 MB in the end (delta: -1.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 585 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 1630 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: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 27 SDtfs, 12 SDslu, 13 SDs, 0 SdLazy, 97 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...