/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-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin000_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:12:00,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:12:00,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:12:00,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:12:00,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:12:01,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:12:01,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:12:01,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:12:01,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:12:01,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:12:01,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:12:01,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:12:01,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:12:01,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:12:01,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:12:01,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:12:01,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:12:01,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:12:01,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:12:01,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:12:01,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:12:01,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:12:01,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:12:01,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:12:01,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:12:01,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:12:01,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:12:01,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:12:01,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:12:01,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:12:01,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:12:01,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:12:01,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:12:01,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:12:01,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:12:01,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:12:01,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:12:01,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:12:01,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:12:01,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:12:01,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:12:01,065 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-SemanticLooper.epf [2020-10-16 05:12:01,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:12:01,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:12:01,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:12:01,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:12:01,111 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:12:01,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:12:01,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:12:01,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:12:01,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:12:01,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:12:01,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:12:01,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:12:01,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:12:01,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:12:01,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:12:01,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:12:01,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:12:01,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:12:01,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:12:01,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:12:01,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:12:01,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:12:01,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:12:01,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:12:01,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:12:01,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:12:01,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:12:01,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:12:01,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:12:01,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:12:01,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:12:01,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:12:01,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:12:01,432 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:12:01,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin000_tso.oepc.i [2020-10-16 05:12:01,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d22196e/74f64a3faf3c4a1b8543f8a8e53f9bdd/FLAGfc4d51543 [2020-10-16 05:12:01,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:12:01,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_tso.oepc.i [2020-10-16 05:12:01,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d22196e/74f64a3faf3c4a1b8543f8a8e53f9bdd/FLAGfc4d51543 [2020-10-16 05:12:02,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d22196e/74f64a3faf3c4a1b8543f8a8e53f9bdd [2020-10-16 05:12:02,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:12:02,300 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:12:02,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:02,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:12:02,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:12:02,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:02" (1/1) ... [2020-10-16 05:12:02,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1c832f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:02, skipping insertion in model container [2020-10-16 05:12:02,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:02" (1/1) ... [2020-10-16 05:12:02,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:12:02,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:12:02,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:02,979 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:12:03,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:03,143 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:12:03,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03 WrapperNode [2020-10-16 05:12:03,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:03,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:03,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:12:03,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:12:03,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (1/1) ... [2020-10-16 05:12:03,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (1/1) ... [2020-10-16 05:12:03,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:03,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:12:03,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:12:03,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:12:03,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (1/1) ... [2020-10-16 05:12:03,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (1/1) ... [2020-10-16 05:12:03,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (1/1) ... [2020-10-16 05:12:03,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (1/1) ... [2020-10-16 05:12:03,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (1/1) ... [2020-10-16 05:12:03,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (1/1) ... [2020-10-16 05:12:03,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (1/1) ... [2020-10-16 05:12:03,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:12:03,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:12:03,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:12:03,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:12:03,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (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 05:12:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:12:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:12:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:12:03,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:12:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:12:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:12:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:12:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:12:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:12:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:12:03,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:12:03,306 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 05:12:03,683 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:12:03,684 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:12:03,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:03 BoogieIcfgContainer [2020-10-16 05:12:03,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:12:03,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:12:03,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:12:03,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:12:03,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:12:02" (1/3) ... [2020-10-16 05:12:03,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db877d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:03, skipping insertion in model container [2020-10-16 05:12:03,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:03" (2/3) ... [2020-10-16 05:12:03,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db877d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:03, skipping insertion in model container [2020-10-16 05:12:03,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:03" (3/3) ... [2020-10-16 05:12:03,695 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_tso.oepc.i [2020-10-16 05:12:03,705 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:12:03,712 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:12:03,713 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:12:03,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,744 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,744 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:03,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 05:12:03,790 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:03,790 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:03,790 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:03,791 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:03,791 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:03,791 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:03,791 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:03,791 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:03,805 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 05:12:03,842 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-16 05:12:03,843 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:03,847 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 05:12:03,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 56 transitions, 122 flow [2020-10-16 05:12:03,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 96 flow [2020-10-16 05:12:03,856 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:03,858 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 05:12:03,861 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 45 transitions, 96 flow [2020-10-16 05:12:03,862 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 96 flow [2020-10-16 05:12:03,876 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2020-10-16 05:12:03,877 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:03,878 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 05:12:03,879 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 05:12:05,075 INFO L132 LiptonReduction]: Checked pairs total: 878 [2020-10-16 05:12:05,075 INFO L134 LiptonReduction]: Total number of compositions: 37 [2020-10-16 05:12:05,078 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1224 [2020-10-16 05:12:05,085 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2020-10-16 05:12:05,086 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:05,086 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:05,087 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 05:12:05,087 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1644539286, now seen corresponding path program 1 times [2020-10-16 05:12:05,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:05,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847255483] [2020-10-16 05:12:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:05,306 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 05:12:05,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847255483] [2020-10-16 05:12:05,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:05,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:05,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425007313] [2020-10-16 05:12:05,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:05,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:05,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:05,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:05,332 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2020-10-16 05:12:05,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states. [2020-10-16 05:12:05,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:05,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2020-10-16 05:12:05,335 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:05,362 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 05:12:05,362 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:05,363 INFO L80 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:12:05,364 INFO L132 encePairwiseOnDemand]: 90/93 looper letters, 1 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2020-10-16 05:12:05,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 36 flow [2020-10-16 05:12:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2020-10-16 05:12:05,380 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8100358422939068 [2020-10-16 05:12:05,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2020-10-16 05:12:05,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2020-10-16 05:12:05,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:05,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2020-10-16 05:12:05,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:05,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:05,396 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:05,399 INFO L185 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 226 transitions. [2020-10-16 05:12:05,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 36 flow [2020-10-16 05:12:05,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:05,405 INFO L241 Difference]: Finished difference. Result has 20 places, 12 transitions, 36 flow [2020-10-16 05:12:05,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2020-10-16 05:12:05,409 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2020-10-16 05:12:05,409 INFO L481 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 36 flow [2020-10-16 05:12:05,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:05,409 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:05,409 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:05,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:12:05,410 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:05,411 INFO L82 PathProgramCache]: Analyzing trace with hash -558890290, now seen corresponding path program 1 times [2020-10-16 05:12:05,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:05,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330911061] [2020-10-16 05:12:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:05,481 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 05:12:05,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330911061] [2020-10-16 05:12:05,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:05,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:05,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246620347] [2020-10-16 05:12:05,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:05,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:05,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:05,486 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2020-10-16 05:12:05,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states. [2020-10-16 05:12:05,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:05,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2020-10-16 05:12:05,487 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:05,519 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:12:05,520 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2020-10-16 05:12:05,520 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 17 events. 0/17 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 28 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 05:12:05,520 INFO L132 encePairwiseOnDemand]: 89/93 looper letters, 1 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2020-10-16 05:12:05,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 51 flow [2020-10-16 05:12:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 283 transitions. [2020-10-16 05:12:05,524 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2020-10-16 05:12:05,525 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 283 transitions. [2020-10-16 05:12:05,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 283 transitions. [2020-10-16 05:12:05,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:05,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 283 transitions. [2020-10-16 05:12:05,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:05,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:05,529 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:05,529 INFO L185 Difference]: Start difference. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states and 283 transitions. [2020-10-16 05:12:05,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 51 flow [2020-10-16 05:12:05,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 13 transitions, 45 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:05,531 INFO L241 Difference]: Finished difference. Result has 23 places, 12 transitions, 46 flow [2020-10-16 05:12:05,531 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2020-10-16 05:12:05,532 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2020-10-16 05:12:05,532 INFO L481 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 46 flow [2020-10-16 05:12:05,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:05,532 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:05,533 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:05,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:12:05,533 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:05,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:05,533 INFO L82 PathProgramCache]: Analyzing trace with hash -222609709, now seen corresponding path program 1 times [2020-10-16 05:12:05,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:05,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846976112] [2020-10-16 05:12:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:05,586 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 05:12:05,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846976112] [2020-10-16 05:12:05,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:05,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:05,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397424989] [2020-10-16 05:12:05,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:05,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:05,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:05,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:05,590 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 93 [2020-10-16 05:12:05,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 46 flow. Second operand 4 states. [2020-10-16 05:12:05,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:05,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 93 [2020-10-16 05:12:05,591 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:05,610 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2020-10-16 05:12:05,610 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-10-16 05:12:05,611 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 11 events. 0/11 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 05:12:05,611 INFO L132 encePairwiseOnDemand]: 90/93 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2020-10-16 05:12:05,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 11 transitions, 44 flow [2020-10-16 05:12:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2020-10-16 05:12:05,614 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7446236559139785 [2020-10-16 05:12:05,614 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2020-10-16 05:12:05,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2020-10-16 05:12:05,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:05,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2020-10-16 05:12:05,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:05,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:05,617 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:05,617 INFO L185 Difference]: Start difference. First operand has 23 places, 12 transitions, 46 flow. Second operand 4 states and 277 transitions. [2020-10-16 05:12:05,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 11 transitions, 44 flow [2020-10-16 05:12:05,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 34 flow, removed 0 selfloop flow, removed 5 redundant places. [2020-10-16 05:12:05,618 INFO L241 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2020-10-16 05:12:05,619 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2020-10-16 05:12:05,619 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2020-10-16 05:12:05,619 INFO L481 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2020-10-16 05:12:05,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:05,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:12:05,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:12:05 BasicIcfg [2020-10-16 05:12:05,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:12:05,627 INFO L168 Benchmark]: Toolchain (without parser) took 3326.27 ms. Allocated memory was 252.7 MB in the beginning and 357.6 MB in the end (delta: 104.9 MB). Free memory was 205.3 MB in the beginning and 204.5 MB in the end (delta: 805.1 kB). Peak memory consumption was 105.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:05,628 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:12:05,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 842.61 ms. Allocated memory was 252.7 MB in the beginning and 322.4 MB in the end (delta: 69.7 MB). Free memory was 205.3 MB in the beginning and 273.4 MB in the end (delta: -68.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:05,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.46 ms. Allocated memory is still 322.4 MB. Free memory was 273.4 MB in the beginning and 270.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:05,630 INFO L168 Benchmark]: Boogie Preprocessor took 27.87 ms. Allocated memory is still 322.4 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:12:05,631 INFO L168 Benchmark]: RCFGBuilder took 460.01 ms. Allocated memory is still 322.4 MB. Free memory was 270.8 MB in the beginning and 249.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:05,632 INFO L168 Benchmark]: TraceAbstraction took 1936.69 ms. Allocated memory was 322.4 MB in the beginning and 357.6 MB in the end (delta: 35.1 MB). Free memory was 249.0 MB in the beginning and 204.5 MB in the end (delta: 44.5 MB). Peak memory consumption was 79.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:12:05,637 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 842.61 ms. Allocated memory was 252.7 MB in the beginning and 322.4 MB in the end (delta: 69.7 MB). Free memory was 205.3 MB in the beginning and 273.4 MB in the end (delta: -68.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.46 ms. Allocated memory is still 322.4 MB. Free memory was 273.4 MB in the beginning and 270.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.87 ms. Allocated memory is still 322.4 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 460.01 ms. Allocated memory is still 322.4 MB. Free memory was 270.8 MB in the beginning and 249.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1936.69 ms. Allocated memory was 322.4 MB in the beginning and 357.6 MB in the end (delta: 35.1 MB). Free memory was 249.0 MB in the beginning and 204.5 MB in the end (delta: 44.5 MB). Peak memory consumption was 79.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 323 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 51 PlacesBefore, 19 PlacesAfterwards, 45 TransitionsBefore, 12 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 878 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 9 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...