/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/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:42:22,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:42:22,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:42:22,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:42:22,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:42:22,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:42:22,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:42:22,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:42:22,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:42:22,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:42:22,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:42:22,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:42:22,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:42:22,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:42:22,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:42:22,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:42:22,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:42:22,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:42:22,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:42:22,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:42:22,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:42:22,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:42:22,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:42:22,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:42:22,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:42:22,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:42:22,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:42:22,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:42:22,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:42:22,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:42:22,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:42:22,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:42:22,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:42:22,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:42:22,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:42:22,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:42:22,133 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 01:42:22,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:42:22,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:42:22,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:42:22,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:42:22,187 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:42:22,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:42:22,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:42:22,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:42:22,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:42:22,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:42:22,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:42:22,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:42:22,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:42:22,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:42:22,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:42:22,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:42:22,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:42:22,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:42:22,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:42:22,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:42:22,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:42:22,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:42:22,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:42:22,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:42:22,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:42:22,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:42:22,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:42:22,192 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:42:22,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:42:22,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:42:22,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:42:22,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:42:22,493 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:42:22,493 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:42:22,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-10-16 01:42:22,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00892dc2b/100aec6618f445bc8ed495f36b60c063/FLAG99c8b0feb [2020-10-16 01:42:23,117 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:42:23,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-10-16 01:42:23,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00892dc2b/100aec6618f445bc8ed495f36b60c063/FLAG99c8b0feb [2020-10-16 01:42:23,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00892dc2b/100aec6618f445bc8ed495f36b60c063 [2020-10-16 01:42:23,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:42:23,429 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:42:23,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:42:23,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:42:23,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:42:23,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:42:23" (1/1) ... [2020-10-16 01:42:23,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6ec508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:23, skipping insertion in model container [2020-10-16 01:42:23,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:42:23" (1/1) ... [2020-10-16 01:42:23,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:42:23,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:42:23,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:42:23,921 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:42:23,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:42:24,074 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:42:24,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24 WrapperNode [2020-10-16 01:42:24,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:42:24,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:42:24,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:42:24,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:42:24,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (1/1) ... [2020-10-16 01:42:24,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (1/1) ... [2020-10-16 01:42:24,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:42:24,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:42:24,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:42:24,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:42:24,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (1/1) ... [2020-10-16 01:42:24,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (1/1) ... [2020-10-16 01:42:24,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (1/1) ... [2020-10-16 01:42:24,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (1/1) ... [2020-10-16 01:42:24,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (1/1) ... [2020-10-16 01:42:24,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (1/1) ... [2020-10-16 01:42:24,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (1/1) ... [2020-10-16 01:42:24,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:42:24,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:42:24,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:42:24,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:42:24,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (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 01:42:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:42:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:42:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:42:24,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:42:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:42:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:42:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:42:24,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:42:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:42:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:42:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:42:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:42:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:42:24,244 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 01:42:24,563 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:42:24,564 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:42:24,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:42:24 BoogieIcfgContainer [2020-10-16 01:42:24,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:42:24,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:42:24,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:42:24,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:42:24,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:42:23" (1/3) ... [2020-10-16 01:42:24,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abc6c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:42:24, skipping insertion in model container [2020-10-16 01:42:24,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:42:24" (2/3) ... [2020-10-16 01:42:24,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abc6c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:42:24, skipping insertion in model container [2020-10-16 01:42:24,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:42:24" (3/3) ... [2020-10-16 01:42:24,575 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-10-16 01:42:24,588 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:42:24,596 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:42:24,597 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:42:24,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,650 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,655 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,655 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,655 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,669 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,670 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,670 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,671 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,674 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,674 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,674 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,675 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:42:24,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:42:24,719 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:42:24,719 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:42:24,719 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:42:24,719 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:42:24,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:42:24,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:42:24,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:42:24,720 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:42:24,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:42:24,779 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:42:24,779 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:42:24,785 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 46 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 01:42:24,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:42:24,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:42:24,794 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:42:24,797 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:42:24,800 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:42:24,800 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:42:24,834 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:42:24,834 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:42:24,835 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 49 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 01:42:24,840 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:42:26,258 INFO L132 LiptonReduction]: Checked pairs total: 1693 [2020-10-16 01:42:26,258 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 01:42:26,261 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1469 [2020-10-16 01:42:26,269 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 01:42:26,269 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:42:26,270 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:26,271 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:26,271 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash 158172579, now seen corresponding path program 1 times [2020-10-16 01:42:26,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:26,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845313668] [2020-10-16 01:42:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:26,510 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 01:42:26,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845313668] [2020-10-16 01:42:26,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:26,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:42:26,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954205678] [2020-10-16 01:42:26,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:42:26,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:26,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:42:26,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:42:26,549 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 113 [2020-10-16 01:42:26,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 01:42:26,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:26,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 113 [2020-10-16 01:42:26,554 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:26,578 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:42:26,578 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:42:26,579 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:42:26,584 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:42:26,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:42:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:42:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:42:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2020-10-16 01:42:26,600 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8849557522123894 [2020-10-16 01:42:26,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2020-10-16 01:42:26,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2020-10-16 01:42:26,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:26,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2020-10-16 01:42:26,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:42:26,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:42:26,619 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:42:26,621 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 300 transitions. [2020-10-16 01:42:26,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:42:26,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:42:26,628 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:42:26,631 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:42:26,632 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:42:26,632 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:42:26,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:42:26,632 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:26,633 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:26,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:42:26,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:26,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:26,634 INFO L82 PathProgramCache]: Analyzing trace with hash 608367391, now seen corresponding path program 1 times [2020-10-16 01:42:26,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:26,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346323305] [2020-10-16 01:42:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:26,706 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 01:42:26,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346323305] [2020-10-16 01:42:26,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:26,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:42:26,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737950303] [2020-10-16 01:42:26,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:42:26,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:26,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:42:26,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:42:26,712 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 113 [2020-10-16 01:42:26,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states. [2020-10-16 01:42:26,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:26,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 113 [2020-10-16 01:42:26,713 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:26,733 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2020-10-16 01:42:26,733 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 01:42:26,734 INFO L80 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 27 events. 3/27 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 43. Up to 10 conditions per place. [2020-10-16 01:42:26,734 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:42:26,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 64 flow [2020-10-16 01:42:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:42:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:42:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:42:26,738 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8525073746312685 [2020-10-16 01:42:26,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:42:26,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:42:26,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:26,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:42:26,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:42:26,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:42:26,742 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:42:26,742 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:42:26,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 64 flow [2020-10-16 01:42:26,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 60 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:42:26,744 INFO L241 Difference]: Finished difference. Result has 28 places, 19 transitions, 63 flow [2020-10-16 01:42:26,744 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, 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=63, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2020-10-16 01:42:26,745 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:42:26,745 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 63 flow [2020-10-16 01:42:26,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:42:26,746 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:26,746 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:26,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:42:26,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:26,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:26,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1642012686, now seen corresponding path program 1 times [2020-10-16 01:42:26,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:26,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436153785] [2020-10-16 01:42:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:26,809 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 01:42:26,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436153785] [2020-10-16 01:42:26,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:26,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:42:26,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086059948] [2020-10-16 01:42:26,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:42:26,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:26,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:42:26,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:42:26,814 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2020-10-16 01:42:26,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 63 flow. Second operand 4 states. [2020-10-16 01:42:26,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:26,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2020-10-16 01:42:26,815 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:26,879 INFO L129 PetriNetUnfolder]: 2/33 cut-off events. [2020-10-16 01:42:26,880 INFO L130 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2020-10-16 01:42:26,880 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 33 events. 2/33 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 88 event pairs, 0 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 58. Up to 8 conditions per place. [2020-10-16 01:42:26,881 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 2 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2020-10-16 01:42:26,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 20 transitions, 76 flow [2020-10-16 01:42:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:42:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:42:26,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2020-10-16 01:42:26,886 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8296460176991151 [2020-10-16 01:42:26,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2020-10-16 01:42:26,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2020-10-16 01:42:26,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:26,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2020-10-16 01:42:26,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:42:26,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:42:26,889 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:42:26,890 INFO L185 Difference]: Start difference. First operand has 28 places, 19 transitions, 63 flow. Second operand 4 states and 375 transitions. [2020-10-16 01:42:26,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 20 transitions, 76 flow [2020-10-16 01:42:26,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:42:26,892 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 79 flow [2020-10-16 01:42:26,892 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2020-10-16 01:42:26,893 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 01:42:26,893 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 79 flow [2020-10-16 01:42:26,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:42:26,893 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:26,893 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:26,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:42:26,894 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:26,894 INFO L82 PathProgramCache]: Analyzing trace with hash 539795068, now seen corresponding path program 1 times [2020-10-16 01:42:26,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:26,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407012151] [2020-10-16 01:42:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:27,027 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 01:42:27,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407012151] [2020-10-16 01:42:27,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:27,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:42:27,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110796223] [2020-10-16 01:42:27,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:42:27,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:27,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:42:27,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:42:27,034 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 113 [2020-10-16 01:42:27,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 79 flow. Second operand 4 states. [2020-10-16 01:42:27,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:27,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 113 [2020-10-16 01:42:27,035 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:27,153 INFO L129 PetriNetUnfolder]: 61/146 cut-off events. [2020-10-16 01:42:27,154 INFO L130 PetriNetUnfolder]: For 268/299 co-relation queries the response was YES. [2020-10-16 01:42:27,156 INFO L80 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 146 events. 61/146 cut-off events. For 268/299 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 672 event pairs, 22 based on Foata normal form. 21/157 useless extension candidates. Maximal degree in co-relation 333. Up to 92 conditions per place. [2020-10-16 01:42:27,159 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 7 selfloop transitions, 7 changer transitions 2/30 dead transitions. [2020-10-16 01:42:27,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 131 flow [2020-10-16 01:42:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:42:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:42:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 01:42:27,168 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7486725663716814 [2020-10-16 01:42:27,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 01:42:27,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 01:42:27,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:27,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 01:42:27,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:42:27,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:42:27,174 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:42:27,178 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 79 flow. Second operand 5 states and 423 transitions. [2020-10-16 01:42:27,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 131 flow [2020-10-16 01:42:27,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:42:27,185 INFO L241 Difference]: Finished difference. Result has 37 places, 26 transitions, 129 flow [2020-10-16 01:42:27,185 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=129, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2020-10-16 01:42:27,185 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:42:27,185 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 129 flow [2020-10-16 01:42:27,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:42:27,186 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:27,186 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:27,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:42:27,186 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:27,187 INFO L82 PathProgramCache]: Analyzing trace with hash -906775942, now seen corresponding path program 1 times [2020-10-16 01:42:27,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:27,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141215328] [2020-10-16 01:42:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:27,244 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 01:42:27,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141215328] [2020-10-16 01:42:27,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:27,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:42:27,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489854044] [2020-10-16 01:42:27,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:42:27,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:42:27,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:42:27,247 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 113 [2020-10-16 01:42:27,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 129 flow. Second operand 5 states. [2020-10-16 01:42:27,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:27,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 113 [2020-10-16 01:42:27,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:27,324 INFO L129 PetriNetUnfolder]: 43/132 cut-off events. [2020-10-16 01:42:27,324 INFO L130 PetriNetUnfolder]: For 516/678 co-relation queries the response was YES. [2020-10-16 01:42:27,325 INFO L80 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 132 events. 43/132 cut-off events. For 516/678 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 651 event pairs, 3 based on Foata normal form. 65/191 useless extension candidates. Maximal degree in co-relation 485. Up to 99 conditions per place. [2020-10-16 01:42:27,326 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 13 changer transitions 4/36 dead transitions. [2020-10-16 01:42:27,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 231 flow [2020-10-16 01:42:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:42:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:42:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 591 transitions. [2020-10-16 01:42:27,329 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7471554993678887 [2020-10-16 01:42:27,330 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 591 transitions. [2020-10-16 01:42:27,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 591 transitions. [2020-10-16 01:42:27,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:27,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 591 transitions. [2020-10-16 01:42:27,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:42:27,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:42:27,334 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:42:27,334 INFO L185 Difference]: Start difference. First operand has 37 places, 26 transitions, 129 flow. Second operand 7 states and 591 transitions. [2020-10-16 01:42:27,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 231 flow [2020-10-16 01:42:27,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:42:27,338 INFO L241 Difference]: Finished difference. Result has 45 places, 32 transitions, 213 flow [2020-10-16 01:42:27,338 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=213, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2020-10-16 01:42:27,339 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 01:42:27,339 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 213 flow [2020-10-16 01:42:27,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:42:27,339 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:27,339 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:42:27,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:42:27,340 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:27,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1638185168, now seen corresponding path program 1 times [2020-10-16 01:42:27,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:27,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181612688] [2020-10-16 01:42:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:27,394 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 01:42:27,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181612688] [2020-10-16 01:42:27,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:27,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:42:27,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815109509] [2020-10-16 01:42:27,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:42:27,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:27,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:42:27,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:42:27,398 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 113 [2020-10-16 01:42:27,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 213 flow. Second operand 6 states. [2020-10-16 01:42:27,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:27,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 113 [2020-10-16 01:42:27,399 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:27,495 INFO L129 PetriNetUnfolder]: 25/108 cut-off events. [2020-10-16 01:42:27,495 INFO L130 PetriNetUnfolder]: For 751/1073 co-relation queries the response was YES. [2020-10-16 01:42:27,496 INFO L80 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 108 events. 25/108 cut-off events. For 751/1073 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 550 event pairs, 0 based on Foata normal form. 76/178 useless extension candidates. Maximal degree in co-relation 507. Up to 80 conditions per place. [2020-10-16 01:42:27,497 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 2 selfloop transitions, 17 changer transitions 3/36 dead transitions. [2020-10-16 01:42:27,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 36 transitions, 289 flow [2020-10-16 01:42:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 01:42:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-16 01:42:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 753 transitions. [2020-10-16 01:42:27,501 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7404129793510325 [2020-10-16 01:42:27,501 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 753 transitions. [2020-10-16 01:42:27,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 753 transitions. [2020-10-16 01:42:27,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:27,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 753 transitions. [2020-10-16 01:42:27,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-16 01:42:27,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-16 01:42:27,506 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-16 01:42:27,506 INFO L185 Difference]: Start difference. First operand has 45 places, 32 transitions, 213 flow. Second operand 9 states and 753 transitions. [2020-10-16 01:42:27,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 36 transitions, 289 flow [2020-10-16 01:42:27,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 36 transitions, 259 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:42:27,512 INFO L241 Difference]: Finished difference. Result has 54 places, 33 transitions, 239 flow [2020-10-16 01:42:27,512 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=239, PETRI_PLACES=54, PETRI_TRANSITIONS=33} [2020-10-16 01:42:27,512 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2020-10-16 01:42:27,513 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 33 transitions, 239 flow [2020-10-16 01:42:27,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:42:27,513 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:27,513 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 01:42:27,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:42:27,513 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash -573041655, now seen corresponding path program 1 times [2020-10-16 01:42:27,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:27,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846144354] [2020-10-16 01:42:27,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:27,544 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 01:42:27,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846144354] [2020-10-16 01:42:27,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:27,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:42:27,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465654611] [2020-10-16 01:42:27,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:42:27,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:27,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:42:27,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:42:27,547 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2020-10-16 01:42:27,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 33 transitions, 239 flow. Second operand 4 states. [2020-10-16 01:42:27,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:27,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2020-10-16 01:42:27,548 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:27,593 INFO L129 PetriNetUnfolder]: 39/165 cut-off events. [2020-10-16 01:42:27,593 INFO L130 PetriNetUnfolder]: For 742/794 co-relation queries the response was YES. [2020-10-16 01:42:27,595 INFO L80 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 165 events. 39/165 cut-off events. For 742/794 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1038 event pairs, 0 based on Foata normal form. 10/161 useless extension candidates. Maximal degree in co-relation 665. Up to 67 conditions per place. [2020-10-16 01:42:27,595 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 3 selfloop transitions, 1 changer transitions 11/34 dead transitions. [2020-10-16 01:42:27,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 34 transitions, 251 flow [2020-10-16 01:42:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:42:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:42:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2020-10-16 01:42:27,598 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.827433628318584 [2020-10-16 01:42:27,598 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2020-10-16 01:42:27,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2020-10-16 01:42:27,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:27,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2020-10-16 01:42:27,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:42:27,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:42:27,603 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:42:27,603 INFO L185 Difference]: Start difference. First operand has 54 places, 33 transitions, 239 flow. Second operand 4 states and 374 transitions. [2020-10-16 01:42:27,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 34 transitions, 251 flow [2020-10-16 01:42:27,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 193 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-16 01:42:27,610 INFO L241 Difference]: Finished difference. Result has 50 places, 23 transitions, 127 flow [2020-10-16 01:42:27,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=50, PETRI_TRANSITIONS=23} [2020-10-16 01:42:27,611 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2020-10-16 01:42:27,611 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 23 transitions, 127 flow [2020-10-16 01:42:27,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:42:27,611 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:42:27,611 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 01:42:27,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:42:27,612 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:42:27,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:42:27,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1730857545, now seen corresponding path program 2 times [2020-10-16 01:42:27,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:42:27,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110929635] [2020-10-16 01:42:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:42:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:42:27,637 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 01:42:27,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110929635] [2020-10-16 01:42:27,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:42:27,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:42:27,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068174986] [2020-10-16 01:42:27,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:42:27,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:42:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:42:27,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:42:27,640 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 113 [2020-10-16 01:42:27,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 23 transitions, 127 flow. Second operand 3 states. [2020-10-16 01:42:27,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:42:27,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 113 [2020-10-16 01:42:27,641 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:42:27,648 INFO L129 PetriNetUnfolder]: 6/30 cut-off events. [2020-10-16 01:42:27,649 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2020-10-16 01:42:27,649 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 30 events. 6/30 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 82. Up to 10 conditions per place. [2020-10-16 01:42:27,649 INFO L132 encePairwiseOnDemand]: 111/113 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 01:42:27,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 22 transitions, 113 flow [2020-10-16 01:42:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:42:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:42:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 01:42:27,652 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8436578171091446 [2020-10-16 01:42:27,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 01:42:27,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 01:42:27,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:42:27,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 01:42:27,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:42:27,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:42:27,654 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:42:27,654 INFO L185 Difference]: Start difference. First operand has 50 places, 23 transitions, 127 flow. Second operand 3 states and 286 transitions. [2020-10-16 01:42:27,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 22 transitions, 113 flow [2020-10-16 01:42:27,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 22 transitions, 104 flow, removed 0 selfloop flow, removed 5 redundant places. [2020-10-16 01:42:27,656 INFO L241 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2020-10-16 01:42:27,656 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2020-10-16 01:42:27,656 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2020-10-16 01:42:27,656 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2020-10-16 01:42:27,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:42:27,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:42:27,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:42:27 BasicIcfg [2020-10-16 01:42:27,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:42:27,664 INFO L168 Benchmark]: Toolchain (without parser) took 4234.27 ms. Allocated memory was 252.2 MB in the beginning and 371.7 MB in the end (delta: 119.5 MB). Free memory was 205.4 MB in the beginning and 225.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 100.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:27,664 INFO L168 Benchmark]: CDTParser took 0.20 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 01:42:27,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.73 ms. Allocated memory was 252.2 MB in the beginning and 317.2 MB in the end (delta: 65.0 MB). Free memory was 205.4 MB in the beginning and 268.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:27,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.61 ms. Allocated memory is still 317.2 MB. Free memory was 268.0 MB in the beginning and 265.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:27,667 INFO L168 Benchmark]: Boogie Preprocessor took 27.99 ms. Allocated memory is still 317.2 MB. Free memory was 265.5 MB in the beginning and 263.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:27,668 INFO L168 Benchmark]: RCFGBuilder took 408.44 ms. Allocated memory is still 317.2 MB. Free memory was 263.0 MB in the beginning and 241.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:27,668 INFO L168 Benchmark]: TraceAbstraction took 3093.39 ms. Allocated memory was 317.2 MB in the beginning and 371.7 MB in the end (delta: 54.5 MB). Free memory was 241.2 MB in the beginning and 225.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 70.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:42:27,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 646.73 ms. Allocated memory was 252.2 MB in the beginning and 317.2 MB in the end (delta: 65.0 MB). Free memory was 205.4 MB in the beginning and 268.0 MB in the end (delta: -62.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 52.61 ms. Allocated memory is still 317.2 MB. Free memory was 268.0 MB in the beginning and 265.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.99 ms. Allocated memory is still 317.2 MB. Free memory was 265.5 MB in the beginning and 263.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 408.44 ms. Allocated memory is still 317.2 MB. Free memory was 263.0 MB in the beginning and 241.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3093.39 ms. Allocated memory was 317.2 MB in the beginning and 371.7 MB in the end (delta: 54.5 MB). Free memory was 241.2 MB in the beginning and 225.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 70.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 605 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 92 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 1693 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 26 SDtfs, 15 SDslu, 12 SDs, 0 SdLazy, 98 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2872 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...