/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:12:09,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:12:09,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:12:09,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:12:09,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:12:09,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:12:09,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:12:09,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:12:09,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:12:09,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:12:09,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:12:09,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:12:09,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:12:09,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:12:09,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:12:09,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:12:09,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:12:09,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:12:09,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:12:09,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:12:09,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:12:09,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:12:09,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:12:09,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:12:09,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:12:09,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:12:09,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:12:09,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:12:09,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:12:09,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:12:09,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:12:09,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:12:09,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:12:09,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:12:09,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:12:09,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:12:09,087 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-RepeatedVariableLbe.epf [2021-03-25 05:12:09,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:12:09,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:12:09,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:12:09,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:12:09,127 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:12:09,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:12:09,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:12:09,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:12:09,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:12:09,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:12:09,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:12:09,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:12:09,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:12:09,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:12:09,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:12:09,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:12:09,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:12:09,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:12:09,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:12:09,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:12:09,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:12:09,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:12:09,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:12:09,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:12:09,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:12:09,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:12:09,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:12:09,131 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:12:09,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:12:09,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:12:09,132 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:12:09,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:12:09,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:12:09,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:12:09,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:12:09,427 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:12:09,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2021-03-25 05:12:09,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d16be01/26a1fa6f442c4de892a2d2843917fb61/FLAG94cd9cf7b [2021-03-25 05:12:10,076 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:12:10,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2021-03-25 05:12:10,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d16be01/26a1fa6f442c4de892a2d2843917fb61/FLAG94cd9cf7b [2021-03-25 05:12:10,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d16be01/26a1fa6f442c4de892a2d2843917fb61 [2021-03-25 05:12:10,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:12:10,471 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:12:10,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:12:10,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:12:10,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:12:10,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:10,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aae8ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10, skipping insertion in model container [2021-03-25 05:12:10,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:10,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:12:10,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:12:10,679 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i[950,963] [2021-03-25 05:12:10,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:12:10,857 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:12:10,868 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i[950,963] [2021-03-25 05:12:10,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:12:10,980 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:12:10,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10 WrapperNode [2021-03-25 05:12:10,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:12:10,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:12:10,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:12:10,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:12:10,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:11,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:11,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:12:11,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:12:11,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:12:11,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:12:11,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:11,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:11,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:11,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:11,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:11,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:11,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (1/1) ... [2021-03-25 05:12:11,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:12:11,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:12:11,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:12:11,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:12:11,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (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 [2021-03-25 05:12:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:12:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:12:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:12:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:12:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:12:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:12:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:12:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:12:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:12:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:12:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:12:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:12:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:12:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:12:11,153 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:12:11,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:12:11,587 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:12:11,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:12:11 BoogieIcfgContainer [2021-03-25 05:12:11,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:12:11,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:12:11,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:12:11,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:12:11,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:12:10" (1/3) ... [2021-03-25 05:12:11,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56820eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:12:11, skipping insertion in model container [2021-03-25 05:12:11,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:12:10" (2/3) ... [2021-03-25 05:12:11,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56820eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:12:11, skipping insertion in model container [2021-03-25 05:12:11,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:12:11" (3/3) ... [2021-03-25 05:12:11,597 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2021-03-25 05:12:11,603 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:12:11,606 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:12:11,607 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:12:11,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,643 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,643 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,646 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,647 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,647 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,647 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,647 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,652 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,652 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,656 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,658 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,661 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,662 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,662 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,667 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,667 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,667 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,667 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:12:11,669 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:12:11,686 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:12:11,714 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:12:11,714 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:12:11,715 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:12:11,715 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:12:11,715 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:12:11,715 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:12:11,715 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:12:11,715 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:12:11,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:12:11,777 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 05:12:11,777 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:11,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:12:11,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:12:11,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 05:12:11,805 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:11,813 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:12:11,817 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:12:11,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 05:12:11,841 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 05:12:11,841 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:11,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:12:11,844 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:12:13,430 INFO L154 LiptonReduction]: Checked pairs total: 1134 [2021-03-25 05:12:13,431 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 05:12:13,434 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1630 [2021-03-25 05:12:13,439 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 05:12:13,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:13,440 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:13,440 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:13,441 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:13,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2024649040, now seen corresponding path program 1 times [2021-03-25 05:12:13,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:13,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837431902] [2021-03-25 05:12:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:13,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:13,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:13,723 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:12:13,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:12:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:13,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837431902] [2021-03-25 05:12:13,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:13,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:12:13,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700937985] [2021-03-25 05:12:13,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:13,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:13,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:13,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:13,765 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 113 [2021-03-25 05:12:13,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:13,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:13,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 113 [2021-03-25 05:12:13,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:13,816 INFO L129 PetriNetUnfolder]: 19/76 cut-off events. [2021-03-25 05:12:13,816 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:13,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 76 events. 19/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 269 event pairs, 9 based on Foata normal form. 8/80 useless extension candidates. Maximal degree in co-relation 121. Up to 22 conditions per place. [2021-03-25 05:12:13,818 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 7 selfloop transitions, 5 changer transitions 1/27 dead transitions. [2021-03-25 05:12:13,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 89 flow [2021-03-25 05:12:13,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2021-03-25 05:12:13,830 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8030973451327433 [2021-03-25 05:12:13,830 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2021-03-25 05:12:13,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2021-03-25 05:12:13,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:13,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2021-03-25 05:12:13,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:13,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:13,843 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:13,845 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 363 transitions. [2021-03-25 05:12:13,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 89 flow [2021-03-25 05:12:13,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:12:13,849 INFO L241 Difference]: Finished difference. Result has 35 places, 25 transitions, 86 flow [2021-03-25 05:12:13,851 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2021-03-25 05:12:13,851 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-25 05:12:13,851 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:13,851 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 25 transitions, 86 flow [2021-03-25 05:12:13,852 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 25 transitions, 86 flow [2021-03-25 05:12:13,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 86 flow [2021-03-25 05:12:13,864 INFO L129 PetriNetUnfolder]: 6/49 cut-off events. [2021-03-25 05:12:13,864 INFO L130 PetriNetUnfolder]: For 13/16 co-relation queries the response was YES. [2021-03-25 05:12:13,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 49 events. 6/49 cut-off events. For 13/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 130 event pairs, 0 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 89. Up to 17 conditions per place. [2021-03-25 05:12:13,865 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-25 05:12:14,442 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:12:14,685 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:12:14,763 INFO L154 LiptonReduction]: Checked pairs total: 333 [2021-03-25 05:12:14,764 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 05:12:14,764 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 913 [2021-03-25 05:12:14,765 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 76 flow [2021-03-25 05:12:14,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:14,766 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:14,766 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:14,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:12:14,767 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:14,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:14,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2094090085, now seen corresponding path program 1 times [2021-03-25 05:12:14,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:14,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222156931] [2021-03-25 05:12:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:14,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:14,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:14,855 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-25 05:12:14,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 05:12:14,878 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:12:14,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:12:14,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:14,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:14,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222156931] [2021-03-25 05:12:14,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:14,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:12:14,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933698911] [2021-03-25 05:12:14,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:12:14,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:14,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:12:14,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:12:14,891 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 118 [2021-03-25 05:12:14,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:14,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:14,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 118 [2021-03-25 05:12:14,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:14,947 INFO L129 PetriNetUnfolder]: 59/141 cut-off events. [2021-03-25 05:12:14,947 INFO L130 PetriNetUnfolder]: For 25/35 co-relation queries the response was YES. [2021-03-25 05:12:14,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 141 events. 59/141 cut-off events. For 25/35 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 628 event pairs, 2 based on Foata normal form. 3/129 useless extension candidates. Maximal degree in co-relation 305. Up to 57 conditions per place. [2021-03-25 05:12:14,950 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 6 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-25 05:12:14,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 110 flow [2021-03-25 05:12:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:14,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2021-03-25 05:12:14,955 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7372881355932204 [2021-03-25 05:12:14,955 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2021-03-25 05:12:14,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2021-03-25 05:12:14,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:14,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2021-03-25 05:12:14,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:14,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:14,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:14,960 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 76 flow. Second operand 4 states and 348 transitions. [2021-03-25 05:12:14,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 110 flow [2021-03-25 05:12:14,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:12:14,963 INFO L241 Difference]: Finished difference. Result has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:14,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2021-03-25 05:12:14,964 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2021-03-25 05:12:14,964 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:14,964 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:14,965 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:14,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:14,986 INFO L129 PetriNetUnfolder]: 30/97 cut-off events. [2021-03-25 05:12:14,986 INFO L130 PetriNetUnfolder]: For 16/26 co-relation queries the response was YES. [2021-03-25 05:12:14,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 97 events. 30/97 cut-off events. For 16/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 408 event pairs, 6 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 219. Up to 51 conditions per place. [2021-03-25 05:12:14,988 INFO L142 LiptonReduction]: Number of co-enabled transitions 166 [2021-03-25 05:12:14,989 INFO L154 LiptonReduction]: Checked pairs total: 37 [2021-03-25 05:12:14,989 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:12:14,989 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-25 05:12:14,990 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 100 flow [2021-03-25 05:12:14,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:14,990 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:14,990 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:14,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:12:14,991 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:14,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1551385883, now seen corresponding path program 1 times [2021-03-25 05:12:14,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:14,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655069485] [2021-03-25 05:12:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:15,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:15,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:15,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:15,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655069485] [2021-03-25 05:12:15,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:15,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:15,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436083006] [2021-03-25 05:12:15,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:15,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:15,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:15,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:15,070 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 118 [2021-03-25 05:12:15,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:15,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 118 [2021-03-25 05:12:15,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:15,093 INFO L129 PetriNetUnfolder]: 31/89 cut-off events. [2021-03-25 05:12:15,094 INFO L130 PetriNetUnfolder]: For 53/95 co-relation queries the response was YES. [2021-03-25 05:12:15,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 89 events. 31/89 cut-off events. For 53/95 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 301 event pairs, 2 based on Foata normal form. 29/111 useless extension candidates. Maximal degree in co-relation 256. Up to 51 conditions per place. [2021-03-25 05:12:15,095 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 4 selfloop transitions, 7 changer transitions 0/26 dead transitions. [2021-03-25 05:12:15,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 134 flow [2021-03-25 05:12:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2021-03-25 05:12:15,098 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8389830508474576 [2021-03-25 05:12:15,098 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2021-03-25 05:12:15,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2021-03-25 05:12:15,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:15,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2021-03-25 05:12:15,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,101 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,101 INFO L185 Difference]: Start difference. First operand has 33 places, 23 transitions, 100 flow. Second operand 4 states and 396 transitions. [2021-03-25 05:12:15,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 134 flow [2021-03-25 05:12:15,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:12:15,103 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:15,103 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-25 05:12:15,104 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2021-03-25 05:12:15,104 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:15,104 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:15,104 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:15,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:15,112 INFO L129 PetriNetUnfolder]: 31/90 cut-off events. [2021-03-25 05:12:15,112 INFO L130 PetriNetUnfolder]: For 70/100 co-relation queries the response was YES. [2021-03-25 05:12:15,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 90 events. 31/90 cut-off events. For 70/100 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 2 based on Foata normal form. 7/90 useless extension candidates. Maximal degree in co-relation 270. Up to 51 conditions per place. [2021-03-25 05:12:15,113 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-25 05:12:15,115 INFO L154 LiptonReduction]: Checked pairs total: 37 [2021-03-25 05:12:15,115 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:12:15,115 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 05:12:15,120 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 138 flow [2021-03-25 05:12:15,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,120 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:15,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:15,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:12:15,121 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:15,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2099435587, now seen corresponding path program 1 times [2021-03-25 05:12:15,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:15,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069633401] [2021-03-25 05:12:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:15,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:15,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:15,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:15,183 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:12:15,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:12:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:15,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069633401] [2021-03-25 05:12:15,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:15,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:12:15,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348461407] [2021-03-25 05:12:15,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:12:15,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:15,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:12:15,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:12:15,197 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 118 [2021-03-25 05:12:15,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:15,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 118 [2021-03-25 05:12:15,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:15,280 INFO L129 PetriNetUnfolder]: 81/230 cut-off events. [2021-03-25 05:12:15,280 INFO L130 PetriNetUnfolder]: For 244/307 co-relation queries the response was YES. [2021-03-25 05:12:15,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 230 events. 81/230 cut-off events. For 244/307 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1273 event pairs, 8 based on Foata normal form. 30/251 useless extension candidates. Maximal degree in co-relation 755. Up to 122 conditions per place. [2021-03-25 05:12:15,284 INFO L132 encePairwiseOnDemand]: 111/118 looper letters, 5 selfloop transitions, 11 changer transitions 9/41 dead transitions. [2021-03-25 05:12:15,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 257 flow [2021-03-25 05:12:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:12:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:12:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 560 transitions. [2021-03-25 05:12:15,286 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7909604519774012 [2021-03-25 05:12:15,287 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 560 transitions. [2021-03-25 05:12:15,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 560 transitions. [2021-03-25 05:12:15,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:15,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 560 transitions. [2021-03-25 05:12:15,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,292 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,292 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 138 flow. Second operand 6 states and 560 transitions. [2021-03-25 05:12:15,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 257 flow [2021-03-25 05:12:15,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 243 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 05:12:15,297 INFO L241 Difference]: Finished difference. Result has 44 places, 32 transitions, 214 flow [2021-03-25 05:12:15,297 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2021-03-25 05:12:15,297 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-25 05:12:15,297 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:15,297 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 32 transitions, 214 flow [2021-03-25 05:12:15,298 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 32 transitions, 214 flow [2021-03-25 05:12:15,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 32 transitions, 214 flow [2021-03-25 05:12:15,315 INFO L129 PetriNetUnfolder]: 53/165 cut-off events. [2021-03-25 05:12:15,316 INFO L130 PetriNetUnfolder]: For 224/253 co-relation queries the response was YES. [2021-03-25 05:12:15,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 165 events. 53/165 cut-off events. For 224/253 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 831 event pairs, 8 based on Foata normal form. 14/170 useless extension candidates. Maximal degree in co-relation 524. Up to 84 conditions per place. [2021-03-25 05:12:15,318 INFO L142 LiptonReduction]: Number of co-enabled transitions 196 [2021-03-25 05:12:15,348 INFO L154 LiptonReduction]: Checked pairs total: 70 [2021-03-25 05:12:15,348 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:12:15,348 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 51 [2021-03-25 05:12:15,349 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 221 flow [2021-03-25 05:12:15,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,349 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:15,350 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:15,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:12:15,350 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 480755879, now seen corresponding path program 2 times [2021-03-25 05:12:15,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:15,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857708132] [2021-03-25 05:12:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:15,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:15,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:15,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:15,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:15,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857708132] [2021-03-25 05:12:15,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:15,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:12:15,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309444239] [2021-03-25 05:12:15,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:12:15,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:15,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:12:15,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:12:15,415 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 119 [2021-03-25 05:12:15,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:15,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 119 [2021-03-25 05:12:15,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:15,455 INFO L129 PetriNetUnfolder]: 36/123 cut-off events. [2021-03-25 05:12:15,455 INFO L130 PetriNetUnfolder]: For 238/346 co-relation queries the response was YES. [2021-03-25 05:12:15,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 123 events. 36/123 cut-off events. For 238/346 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 584 event pairs, 3 based on Foata normal form. 80/195 useless extension candidates. Maximal degree in co-relation 480. Up to 53 conditions per place. [2021-03-25 05:12:15,457 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 1 selfloop transitions, 10 changer transitions 1/32 dead transitions. [2021-03-25 05:12:15,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 32 transitions, 243 flow [2021-03-25 05:12:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:12:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:12:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2021-03-25 05:12:15,459 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2021-03-25 05:12:15,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2021-03-25 05:12:15,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2021-03-25 05:12:15,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:15,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2021-03-25 05:12:15,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,462 INFO L185 Difference]: Start difference. First operand has 43 places, 32 transitions, 221 flow. Second operand 5 states and 497 transitions. [2021-03-25 05:12:15,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 32 transitions, 243 flow [2021-03-25 05:12:15,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 32 transitions, 228 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 05:12:15,467 INFO L241 Difference]: Finished difference. Result has 46 places, 31 transitions, 224 flow [2021-03-25 05:12:15,467 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2021-03-25 05:12:15,468 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2021-03-25 05:12:15,468 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:15,468 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 31 transitions, 224 flow [2021-03-25 05:12:15,468 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 31 transitions, 224 flow [2021-03-25 05:12:15,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 31 transitions, 224 flow [2021-03-25 05:12:15,493 INFO L129 PetriNetUnfolder]: 35/122 cut-off events. [2021-03-25 05:12:15,494 INFO L130 PetriNetUnfolder]: For 242/263 co-relation queries the response was YES. [2021-03-25 05:12:15,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 122 events. 35/122 cut-off events. For 242/263 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 568 event pairs, 3 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 467. Up to 53 conditions per place. [2021-03-25 05:12:15,495 INFO L142 LiptonReduction]: Number of co-enabled transitions 150 [2021-03-25 05:12:15,577 INFO L154 LiptonReduction]: Checked pairs total: 52 [2021-03-25 05:12:15,577 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:12:15,577 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 109 [2021-03-25 05:12:15,579 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 229 flow [2021-03-25 05:12:15,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,580 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:15,580 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:15,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:12:15,580 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash -932086075, now seen corresponding path program 1 times [2021-03-25 05:12:15,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:15,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387848290] [2021-03-25 05:12:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:15,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:15,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:15,630 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:12:15,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:12:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:15,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387848290] [2021-03-25 05:12:15,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:15,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:15,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421934866] [2021-03-25 05:12:15,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:15,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:15,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:15,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:15,644 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2021-03-25 05:12:15,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:15,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2021-03-25 05:12:15,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:15,683 INFO L129 PetriNetUnfolder]: 35/123 cut-off events. [2021-03-25 05:12:15,683 INFO L130 PetriNetUnfolder]: For 435/490 co-relation queries the response was YES. [2021-03-25 05:12:15,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 123 events. 35/123 cut-off events. For 435/490 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 575 event pairs, 0 based on Foata normal form. 21/138 useless extension candidates. Maximal degree in co-relation 515. Up to 54 conditions per place. [2021-03-25 05:12:15,684 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 5 selfloop transitions, 5 changer transitions 7/32 dead transitions. [2021-03-25 05:12:15,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 271 flow [2021-03-25 05:12:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:12:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:12:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 05:12:15,686 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-03-25 05:12:15,686 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 05:12:15,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 05:12:15,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:15,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 05:12:15,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,688 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,689 INFO L185 Difference]: Start difference. First operand has 46 places, 31 transitions, 229 flow. Second operand 4 states and 375 transitions. [2021-03-25 05:12:15,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 271 flow [2021-03-25 05:12:15,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 239 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-25 05:12:15,691 INFO L241 Difference]: Finished difference. Result has 44 places, 24 transitions, 155 flow [2021-03-25 05:12:15,692 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2021-03-25 05:12:15,692 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-25 05:12:15,692 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:15,692 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 24 transitions, 155 flow [2021-03-25 05:12:15,692 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 24 transitions, 155 flow [2021-03-25 05:12:15,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 24 transitions, 155 flow [2021-03-25 05:12:15,699 INFO L129 PetriNetUnfolder]: 13/47 cut-off events. [2021-03-25 05:12:15,700 INFO L130 PetriNetUnfolder]: For 93/102 co-relation queries the response was YES. [2021-03-25 05:12:15,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 47 events. 13/47 cut-off events. For 93/102 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 112 event pairs, 1 based on Foata normal form. 4/48 useless extension candidates. Maximal degree in co-relation 148. Up to 16 conditions per place. [2021-03-25 05:12:15,701 INFO L142 LiptonReduction]: Number of co-enabled transitions 68 [2021-03-25 05:12:15,751 INFO L154 LiptonReduction]: Checked pairs total: 33 [2021-03-25 05:12:15,751 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:12:15,751 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 59 [2021-03-25 05:12:15,753 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 161 flow [2021-03-25 05:12:15,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:12:15,753 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:12:15,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:12:15,753 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:12:15,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:12:15,754 INFO L82 PathProgramCache]: Analyzing trace with hash 952903664, now seen corresponding path program 1 times [2021-03-25 05:12:15,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:12:15,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262462912] [2021-03-25 05:12:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:12:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:12:15,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:12:15,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:12:15,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:12:15,808 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:12:15,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:12:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:12:15,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262462912] [2021-03-25 05:12:15,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:12:15,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:12:15,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554764307] [2021-03-25 05:12:15,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:12:15,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:12:15,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:12:15,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:12:15,822 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 122 [2021-03-25 05:12:15,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:12:15,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 122 [2021-03-25 05:12:15,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:12:15,860 INFO L129 PetriNetUnfolder]: 18/60 cut-off events. [2021-03-25 05:12:15,861 INFO L130 PetriNetUnfolder]: For 189/198 co-relation queries the response was YES. [2021-03-25 05:12:15,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 60 events. 18/60 cut-off events. For 189/198 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 206 event pairs, 0 based on Foata normal form. 8/67 useless extension candidates. Maximal degree in co-relation 216. Up to 17 conditions per place. [2021-03-25 05:12:15,861 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2021-03-25 05:12:15,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 28 transitions, 222 flow [2021-03-25 05:12:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:12:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:12:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2021-03-25 05:12:15,863 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2021-03-25 05:12:15,863 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2021-03-25 05:12:15,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2021-03-25 05:12:15,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:12:15,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2021-03-25 05:12:15,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,866 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,866 INFO L185 Difference]: Start difference. First operand has 43 places, 24 transitions, 161 flow. Second operand 5 states and 450 transitions. [2021-03-25 05:12:15,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 28 transitions, 222 flow [2021-03-25 05:12:15,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 160 flow, removed 4 selfloop flow, removed 9 redundant places. [2021-03-25 05:12:15,869 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-25 05:12:15,869 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-25 05:12:15,869 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-25 05:12:15,869 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:12:15,869 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 05:12:15,869 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 05:12:15,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:12:15,870 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:12:15,870 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:12:15,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:12:15,870 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:12:15,871 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:12:15,871 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:12:15,871 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 05:12:15,872 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:12:15,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:12:15,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:12:15,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:12:15 BasicIcfg [2021-03-25 05:12:15,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:12:15,881 INFO L168 Benchmark]: Toolchain (without parser) took 5406.08 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 232.8 MB in the beginning and 245.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 66.4 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:15,882 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:12:15,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 509.09 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 232.4 MB in the beginning and 297.9 MB in the end (delta: -65.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:15,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.18 ms. Allocated memory is still 335.5 MB. Free memory was 297.9 MB in the beginning and 295.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:15,883 INFO L168 Benchmark]: Boogie Preprocessor took 30.54 ms. Allocated memory is still 335.5 MB. Free memory was 295.9 MB in the beginning and 294.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:15,883 INFO L168 Benchmark]: RCFGBuilder took 519.62 ms. Allocated memory is still 335.5 MB. Free memory was 294.4 MB in the beginning and 272.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:15,883 INFO L168 Benchmark]: TraceAbstraction took 4284.28 ms. Allocated memory is still 335.5 MB. Free memory was 271.8 MB in the beginning and 245.7 MB in the end (delta: 26.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:12:15,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 509.09 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 232.4 MB in the beginning and 297.9 MB in the end (delta: -65.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.18 ms. Allocated memory is still 335.5 MB. Free memory was 297.9 MB in the beginning and 295.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.54 ms. Allocated memory is still 335.5 MB. Free memory was 295.9 MB in the beginning and 294.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 519.62 ms. Allocated memory is still 335.5 MB. Free memory was 294.4 MB in the beginning and 272.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4284.28 ms. Allocated memory is still 335.5 MB. Free memory was 271.8 MB in the beginning and 245.7 MB in the end (delta: 26.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1614.4ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 595, positive: 553, positive conditional: 0, positive unconditional: 553, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 419, positive: 394, positive conditional: 0, positive unconditional: 394, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 419, positive: 394, positive conditional: 0, positive unconditional: 394, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 595, positive: 159, positive conditional: 0, positive unconditional: 159, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 419, unknown conditional: 0, unknown unconditional: 419] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 912.0ms, 35 PlacesBefore, 30 PlacesAfterwards, 25 TransitionsBefore, 20 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 333 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 136, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 136, positive: 89, positive conditional: 0, positive unconditional: 89, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.3ms, 33 PlacesBefore, 33 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 166 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.8ms, 36 PlacesBefore, 36 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 50.3ms, 44 PlacesBefore, 43 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 196 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 70 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 50, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 108.8ms, 46 PlacesBefore, 46 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 150 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 52 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 32, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 32, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 59.0ms, 44 PlacesBefore, 43 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 68 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 33 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7ms, 37 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4163.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 455.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1721.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 17 SDslu, 20 SDs, 0 SdLazy, 94 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 134.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=229occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.3ms SsaConstructionTime, 182.5ms SatisfiabilityAnalysisTime, 436.8ms InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 580 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...