/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/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 04:56:56,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 04:56:56,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 04:56:56,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 04:56:56,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 04:56:56,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 04:56:56,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 04:56:56,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 04:56:56,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 04:56:56,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 04:56:56,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 04:56:56,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 04:56:56,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 04:56:56,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 04:56:56,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 04:56:56,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 04:56:56,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 04:56:56,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 04:56:56,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 04:56:56,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 04:56:56,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 04:56:56,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 04:56:56,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 04:56:56,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 04:56:56,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 04:56:56,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 04:56:56,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 04:56:56,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 04:56:56,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 04:56:56,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 04:56:56,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 04:56:56,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 04:56:56,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 04:56:56,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 04:56:56,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 04:56:56,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 04:56:56,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 04:56:56,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 04:56:56,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 04:56:56,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 04:56:56,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 04:56:56,604 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 04:56:56,644 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 04:56:56,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 04:56:56,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 04:56:56,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 04:56:56,648 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 04:56:56,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 04:56:56,648 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 04:56:56,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 04:56:56,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 04:56:56,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 04:56:56,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 04:56:56,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 04:56:56,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 04:56:56,650 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 04:56:56,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 04:56:56,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 04:56:56,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 04:56:56,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 04:56:56,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 04:56:56,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 04:56:56,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 04:56:56,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 04:56:56,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 04:56:56,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 04:56:56,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 04:56:56,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 04:56:56,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 04:56:56,652 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 04:56:56,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 04:56:56,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 04:56:56,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 04:56:56,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 04:56:57,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 04:56:57,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 04:56:57,006 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 04:56:57,007 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 04:56:57,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2021-03-25 04:56:57,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697ebea7e/24fa77ac48794660a257695887bde60f/FLAGccce68344 [2021-03-25 04:56:57,606 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 04:56:57,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2021-03-25 04:56:57,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697ebea7e/24fa77ac48794660a257695887bde60f/FLAGccce68344 [2021-03-25 04:56:58,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697ebea7e/24fa77ac48794660a257695887bde60f [2021-03-25 04:56:58,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 04:56:58,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 04:56:58,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 04:56:58,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 04:56:58,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 04:56:58,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93d4f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58, skipping insertion in model container [2021-03-25 04:56:58,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 04:56:58,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 04:56:58,250 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/safe000_pso.oepc.i[950,963] [2021-03-25 04:56:58,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:56:58,447 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 04:56:58,460 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/safe000_pso.oepc.i[950,963] [2021-03-25 04:56:58,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:56:58,570 INFO L208 MainTranslator]: Completed translation [2021-03-25 04:56:58,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58 WrapperNode [2021-03-25 04:56:58,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 04:56:58,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 04:56:58,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 04:56:58,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 04:56:58,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 04:56:58,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 04:56:58,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 04:56:58,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 04:56:58,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (1/1) ... [2021-03-25 04:56:58,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 04:56:58,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 04:56:58,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 04:56:58,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 04:56:58,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (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 04:56:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 04:56:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 04:56:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 04:56:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 04:56:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 04:56:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 04:56:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 04:56:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 04:56:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 04:56:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 04:56:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 04:56:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 04:56:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 04:56:58,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 04:56:58,742 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 04:56:59,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 04:56:59,138 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 04:56:59,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:56:59 BoogieIcfgContainer [2021-03-25 04:56:59,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 04:56:59,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 04:56:59,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 04:56:59,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 04:56:59,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 04:56:58" (1/3) ... [2021-03-25 04:56:59,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1a2190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:56:59, skipping insertion in model container [2021-03-25 04:56:59,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:56:58" (2/3) ... [2021-03-25 04:56:59,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1a2190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:56:59, skipping insertion in model container [2021-03-25 04:56:59,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:56:59" (3/3) ... [2021-03-25 04:56:59,146 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2021-03-25 04:56:59,150 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 04:56:59,153 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 04:56:59,154 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 04:56:59,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,178 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,178 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,179 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,179 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,179 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,179 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,179 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,179 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,181 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,181 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,182 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,182 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,182 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,182 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,182 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,182 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,183 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,183 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,183 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,183 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,183 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,183 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,184 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,192 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,192 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:56:59,194 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 04:56:59,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 04:56:59,229 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 04:56:59,229 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 04:56:59,230 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 04:56:59,230 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 04:56:59,230 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 04:56:59,230 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 04:56:59,230 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 04:56:59,230 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 04:56:59,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 04:56:59,272 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 04:56:59,272 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:56:59,275 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 49 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 04:56:59,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 04:56:59,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 04:56:59,281 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:56:59,294 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 04:56:59,297 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 04:56:59,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 04:56:59,320 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 04:56:59,321 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:56:59,321 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 45 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 04:56:59,323 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 04:57:00,663 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-25 04:57:00,865 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-25 04:57:00,866 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-25 04:57:00,867 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1587 [2021-03-25 04:57:00,875 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 04:57:00,875 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:57:00,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:00,876 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:00,876 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:00,881 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-25 04:57:00,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:00,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432374870] [2021-03-25 04:57:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:01,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:01,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:01,165 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:57:01,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:57:01,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:01,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:57:01,191 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 04:57:01,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432374870] [2021-03-25 04:57:01,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:01,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:57:01,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569152641] [2021-03-25 04:57:01,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:57:01,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:57:01,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:57:01,218 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-25 04:57:01,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 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 04:57:01,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:01,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-25 04:57:01,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:01,313 INFO L129 PetriNetUnfolder]: 78/200 cut-off events. [2021-03-25 04:57:01,313 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:57:01,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 200 events. 78/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 959 event pairs, 17 based on Foata normal form. 23/216 useless extension candidates. Maximal degree in co-relation 350. Up to 58 conditions per place. [2021-03-25 04:57:01,316 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 6 changer transitions 15/45 dead transitions. [2021-03-25 04:57:01,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 165 flow [2021-03-25 04:57:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 04:57:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 04:57:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2021-03-25 04:57:01,329 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7598522167487685 [2021-03-25 04:57:01,329 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2021-03-25 04:57:01,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2021-03-25 04:57:01,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:01,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2021-03-25 04:57:01,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 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 04:57:01,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 04:57:01,343 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 04:57:01,345 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 617 transitions. [2021-03-25 04:57:01,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 165 flow [2021-03-25 04:57:01,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 04:57:01,348 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-25 04:57:01,350 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-25 04:57:01,351 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-25 04:57:01,351 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:01,351 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-25 04:57:01,351 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-25 04:57:01,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 25 transitions, 106 flow [2021-03-25 04:57:01,363 INFO L129 PetriNetUnfolder]: 36/120 cut-off events. [2021-03-25 04:57:01,363 INFO L130 PetriNetUnfolder]: For 75/78 co-relation queries the response was YES. [2021-03-25 04:57:01,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 120 events. 36/120 cut-off events. For 75/78 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 514 event pairs, 17 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 294. Up to 41 conditions per place. [2021-03-25 04:57:01,365 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-25 04:57:01,832 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 04:57:02,092 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 04:57:02,174 INFO L154 LiptonReduction]: Checked pairs total: 102 [2021-03-25 04:57:02,174 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 04:57:02,175 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 824 [2021-03-25 04:57:02,175 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 100 flow [2021-03-25 04:57:02,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 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 04:57:02,176 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:02,176 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:02,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 04:57:02,177 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:02,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:02,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1038676965, now seen corresponding path program 1 times [2021-03-25 04:57:02,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:02,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044537476] [2021-03-25 04:57:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:02,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:57:02,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:02,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:57:02,250 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 04:57:02,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044537476] [2021-03-25 04:57:02,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:02,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:57:02,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115421100] [2021-03-25 04:57:02,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:57:02,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:02,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:57:02,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:57:02,256 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 119 [2021-03-25 04:57:02,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 04:57:02,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:02,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 119 [2021-03-25 04:57:02,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:02,305 INFO L129 PetriNetUnfolder]: 31/107 cut-off events. [2021-03-25 04:57:02,305 INFO L130 PetriNetUnfolder]: For 196/229 co-relation queries the response was YES. [2021-03-25 04:57:02,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 107 events. 31/107 cut-off events. For 196/229 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 445 event pairs, 9 based on Foata normal form. 13/115 useless extension candidates. Maximal degree in co-relation 337. Up to 46 conditions per place. [2021-03-25 04:57:02,308 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 12 selfloop transitions, 5 changer transitions 9/38 dead transitions. [2021-03-25 04:57:02,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 248 flow [2021-03-25 04:57:02,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:57:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:57:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 490 transitions. [2021-03-25 04:57:02,310 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2021-03-25 04:57:02,310 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 490 transitions. [2021-03-25 04:57:02,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 490 transitions. [2021-03-25 04:57:02,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:02,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 490 transitions. [2021-03-25 04:57:02,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 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 04:57:02,314 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 04:57:02,314 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 04:57:02,314 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 100 flow. Second operand 5 states and 490 transitions. [2021-03-25 04:57:02,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 248 flow [2021-03-25 04:57:02,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 04:57:02,317 INFO L241 Difference]: Finished difference. Result has 39 places, 26 transitions, 157 flow [2021-03-25 04:57:02,318 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2021-03-25 04:57:02,318 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2021-03-25 04:57:02,318 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:02,318 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 26 transitions, 157 flow [2021-03-25 04:57:02,319 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 26 transitions, 157 flow [2021-03-25 04:57:02,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 26 transitions, 157 flow [2021-03-25 04:57:02,329 INFO L129 PetriNetUnfolder]: 20/80 cut-off events. [2021-03-25 04:57:02,329 INFO L130 PetriNetUnfolder]: For 116/125 co-relation queries the response was YES. [2021-03-25 04:57:02,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 80 events. 20/80 cut-off events. For 116/125 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 299 event pairs, 6 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 251. Up to 30 conditions per place. [2021-03-25 04:57:02,332 INFO L142 LiptonReduction]: Number of co-enabled transitions 172 [2021-03-25 04:57:02,335 INFO L154 LiptonReduction]: Checked pairs total: 93 [2021-03-25 04:57:02,335 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:57:02,336 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 04:57:02,336 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 157 flow [2021-03-25 04:57:02,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 04:57:02,337 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:02,337 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:02,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 04:57:02,337 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:02,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:02,338 INFO L82 PathProgramCache]: Analyzing trace with hash 735330483, now seen corresponding path program 1 times [2021-03-25 04:57:02,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:02,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818574140] [2021-03-25 04:57:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:02,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:02,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:02,376 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:57:02,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:57:02,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:57:02,393 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 04:57:02,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818574140] [2021-03-25 04:57:02,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:02,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:57:02,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509344324] [2021-03-25 04:57:02,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:57:02,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:02,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:57:02,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:57:02,396 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 04:57:02,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 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 04:57:02,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:02,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 04:57:02,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:02,462 INFO L129 PetriNetUnfolder]: 21/94 cut-off events. [2021-03-25 04:57:02,463 INFO L130 PetriNetUnfolder]: For 208/252 co-relation queries the response was YES. [2021-03-25 04:57:02,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 94 events. 21/94 cut-off events. For 208/252 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 398 event pairs, 3 based on Foata normal form. 10/101 useless extension candidates. Maximal degree in co-relation 335. Up to 32 conditions per place. [2021-03-25 04:57:02,464 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 7 selfloop transitions, 8 changer transitions 16/41 dead transitions. [2021-03-25 04:57:02,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 332 flow [2021-03-25 04:57:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 04:57:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 04:57:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 698 transitions. [2021-03-25 04:57:02,466 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7331932773109243 [2021-03-25 04:57:02,466 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 698 transitions. [2021-03-25 04:57:02,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 698 transitions. [2021-03-25 04:57:02,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:02,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 698 transitions. [2021-03-25 04:57:02,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 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 04:57:02,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 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 04:57:02,470 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 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 04:57:02,470 INFO L185 Difference]: Start difference. First operand has 37 places, 26 transitions, 157 flow. Second operand 8 states and 698 transitions. [2021-03-25 04:57:02,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 332 flow [2021-03-25 04:57:02,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 303 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-25 04:57:02,473 INFO L241 Difference]: Finished difference. Result has 46 places, 23 transitions, 152 flow [2021-03-25 04:57:02,474 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=136, 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=8, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2021-03-25 04:57:02,474 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2021-03-25 04:57:02,474 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:02,474 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 23 transitions, 152 flow [2021-03-25 04:57:02,474 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 23 transitions, 152 flow [2021-03-25 04:57:02,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 23 transitions, 152 flow [2021-03-25 04:57:02,478 INFO L129 PetriNetUnfolder]: 5/38 cut-off events. [2021-03-25 04:57:02,478 INFO L130 PetriNetUnfolder]: For 78/83 co-relation queries the response was YES. [2021-03-25 04:57:02,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 38 events. 5/38 cut-off events. For 78/83 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 2 based on Foata normal form. 2/40 useless extension candidates. Maximal degree in co-relation 116. Up to 10 conditions per place. [2021-03-25 04:57:02,479 INFO L142 LiptonReduction]: Number of co-enabled transitions 136 [2021-03-25 04:57:02,551 INFO L154 LiptonReduction]: Checked pairs total: 378 [2021-03-25 04:57:02,552 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 04:57:02,552 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-25 04:57:02,552 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 23 transitions, 161 flow [2021-03-25 04:57:02,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 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 04:57:02,553 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:02,553 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:02,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 04:57:02,553 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:02,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:02,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2007692011, now seen corresponding path program 1 times [2021-03-25 04:57:02,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:02,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732748776] [2021-03-25 04:57:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:02,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:57:02,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:02,594 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:57:02,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:57:02,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:57:02,615 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 04:57:02,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732748776] [2021-03-25 04:57:02,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:02,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:57:02,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351686721] [2021-03-25 04:57:02,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:57:02,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:02,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:57:02,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:57:02,620 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 122 [2021-03-25 04:57:02,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 23 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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 04:57:02,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:02,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 122 [2021-03-25 04:57:02,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:02,665 INFO L129 PetriNetUnfolder]: 4/37 cut-off events. [2021-03-25 04:57:02,665 INFO L130 PetriNetUnfolder]: For 135/180 co-relation queries the response was YES. [2021-03-25 04:57:02,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 37 events. 4/37 cut-off events. For 135/180 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 84 event pairs, 0 based on Foata normal form. 12/49 useless extension candidates. Maximal degree in co-relation 135. Up to 12 conditions per place. [2021-03-25 04:57:02,666 INFO L132 encePairwiseOnDemand]: 112/122 looper letters, 7 selfloop transitions, 9 changer transitions 2/28 dead transitions. [2021-03-25 04:57:02,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 239 flow [2021-03-25 04:57:02,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 04:57:02,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 04:57:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 522 transitions. [2021-03-25 04:57:02,668 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7131147540983607 [2021-03-25 04:57:02,668 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 522 transitions. [2021-03-25 04:57:02,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 522 transitions. [2021-03-25 04:57:02,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:02,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 522 transitions. [2021-03-25 04:57:02,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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 04:57:02,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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 04:57:02,671 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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 04:57:02,671 INFO L185 Difference]: Start difference. First operand has 43 places, 23 transitions, 161 flow. Second operand 6 states and 522 transitions. [2021-03-25 04:57:02,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 239 flow [2021-03-25 04:57:02,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 28 transitions, 194 flow, removed 17 selfloop flow, removed 7 redundant places. [2021-03-25 04:57:02,674 INFO L241 Difference]: Finished difference. Result has 45 places, 25 transitions, 170 flow [2021-03-25 04:57:02,674 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2021-03-25 04:57:02,674 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2021-03-25 04:57:02,674 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:02,674 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 25 transitions, 170 flow [2021-03-25 04:57:02,675 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 25 transitions, 170 flow [2021-03-25 04:57:02,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 25 transitions, 170 flow [2021-03-25 04:57:02,678 INFO L129 PetriNetUnfolder]: 4/37 cut-off events. [2021-03-25 04:57:02,679 INFO L130 PetriNetUnfolder]: For 67/80 co-relation queries the response was YES. [2021-03-25 04:57:02,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 37 events. 4/37 cut-off events. For 67/80 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 97 event pairs, 0 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 110. Up to 10 conditions per place. [2021-03-25 04:57:02,679 INFO L142 LiptonReduction]: Number of co-enabled transitions 146 [2021-03-25 04:57:02,747 INFO L154 LiptonReduction]: Checked pairs total: 188 [2021-03-25 04:57:02,747 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:57:02,747 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 73 [2021-03-25 04:57:02,750 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 168 flow [2021-03-25 04:57:02,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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 04:57:02,751 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:02,751 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:02,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 04:57:02,751 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:02,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1436409421, now seen corresponding path program 1 times [2021-03-25 04:57:02,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:02,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130951217] [2021-03-25 04:57:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:02,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:02,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:02,812 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:57:02,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:57:02,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:02,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 04:57:02,840 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 04:57:02,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130951217] [2021-03-25 04:57:02,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:02,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:57:02,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169201502] [2021-03-25 04:57:02,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:57:02,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:02,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:57:02,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:57:02,843 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 123 [2021-03-25 04:57:02,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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 04:57:02,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:02,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 123 [2021-03-25 04:57:02,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:02,875 INFO L129 PetriNetUnfolder]: 3/35 cut-off events. [2021-03-25 04:57:02,875 INFO L130 PetriNetUnfolder]: For 93/105 co-relation queries the response was YES. [2021-03-25 04:57:02,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 35 events. 3/35 cut-off events. For 93/105 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 94 event pairs, 0 based on Foata normal form. 3/38 useless extension candidates. Maximal degree in co-relation 122. Up to 10 conditions per place. [2021-03-25 04:57:02,876 INFO L132 encePairwiseOnDemand]: 119/123 looper letters, 6 selfloop transitions, 4 changer transitions 5/25 dead transitions. [2021-03-25 04:57:02,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 25 transitions, 207 flow [2021-03-25 04:57:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:57:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:57:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2021-03-25 04:57:02,878 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2021-03-25 04:57:02,878 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2021-03-25 04:57:02,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2021-03-25 04:57:02,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:02,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2021-03-25 04:57:02,879 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 04:57:02,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 04:57:02,884 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 04:57:02,884 INFO L185 Difference]: Start difference. First operand has 42 places, 24 transitions, 168 flow. Second operand 4 states and 348 transitions. [2021-03-25 04:57:02,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 25 transitions, 207 flow [2021-03-25 04:57:02,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 25 transitions, 172 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-25 04:57:02,888 INFO L241 Difference]: Finished difference. Result has 40 places, 20 transitions, 116 flow [2021-03-25 04:57:02,888 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=20} [2021-03-25 04:57:02,888 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-25 04:57:02,888 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:02,888 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 20 transitions, 116 flow [2021-03-25 04:57:02,889 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 20 transitions, 116 flow [2021-03-25 04:57:02,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 20 transitions, 116 flow [2021-03-25 04:57:02,892 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-25 04:57:02,892 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-25 04:57:02,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 24 events. 2/24 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 65. Up to 7 conditions per place. [2021-03-25 04:57:02,893 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-25 04:57:02,962 INFO L154 LiptonReduction]: Checked pairs total: 91 [2021-03-25 04:57:02,963 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 04:57:02,963 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 75 [2021-03-25 04:57:02,963 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 112 flow [2021-03-25 04:57:02,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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 04:57:02,964 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:02,964 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:02,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 04:57:02,964 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:02,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:02,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1084663809, now seen corresponding path program 1 times [2021-03-25 04:57:02,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:02,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754864761] [2021-03-25 04:57:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:03,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:03,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:03,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:03,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:03,037 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 04:57:03,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754864761] [2021-03-25 04:57:03,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:03,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:57:03,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762482038] [2021-03-25 04:57:03,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:57:03,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:03,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:57:03,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:57:03,040 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 126 [2021-03-25 04:57:03,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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 04:57:03,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:03,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 126 [2021-03-25 04:57:03,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:03,052 INFO L129 PetriNetUnfolder]: 2/20 cut-off events. [2021-03-25 04:57:03,052 INFO L130 PetriNetUnfolder]: For 52/62 co-relation queries the response was YES. [2021-03-25 04:57:03,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 20 events. 2/20 cut-off events. For 52/62 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 30 event pairs, 0 based on Foata normal form. 3/23 useless extension candidates. Maximal degree in co-relation 61. Up to 7 conditions per place. [2021-03-25 04:57:03,052 INFO L132 encePairwiseOnDemand]: 122/126 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2021-03-25 04:57:03,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 17 transitions, 110 flow [2021-03-25 04:57:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:57:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:57:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 401 transitions. [2021-03-25 04:57:03,054 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7956349206349206 [2021-03-25 04:57:03,054 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 401 transitions. [2021-03-25 04:57:03,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 401 transitions. [2021-03-25 04:57:03,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:03,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 401 transitions. [2021-03-25 04:57:03,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 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 04:57:03,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 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 04:57:03,057 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 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 04:57:03,057 INFO L185 Difference]: Start difference. First operand has 37 places, 18 transitions, 112 flow. Second operand 4 states and 401 transitions. [2021-03-25 04:57:03,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 17 transitions, 110 flow [2021-03-25 04:57:03,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 76 flow, removed 5 selfloop flow, removed 10 redundant places. [2021-03-25 04:57:03,058 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-03-25 04:57:03,058 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-03-25 04:57:03,058 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 04:57:03,058 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:03,058 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-25 04:57:03,058 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-25 04:57:03,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 04:57:03,059 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 04:57:03,059 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:57:03,059 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 04:57:03,060 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 04:57:03,060 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 04:57:03,060 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:57:03,060 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 04:57:03,061 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 04:57:03,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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 04:57:03,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 04:57:03,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 04:57:03 BasicIcfg [2021-03-25 04:57:03,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 04:57:03,066 INFO L168 Benchmark]: Toolchain (without parser) took 4993.50 ms. Allocated memory was 255.9 MB in the beginning and 413.1 MB in the end (delta: 157.3 MB). Free memory was 232.9 MB in the beginning and 168.6 MB in the end (delta: 64.2 MB). Peak memory consumption was 221.0 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:03,066 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 160.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:57:03,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.80 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 232.9 MB in the beginning and 307.1 MB in the end (delta: -74.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:03,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.56 ms. Allocated memory is still 343.9 MB. Free memory was 307.1 MB in the beginning and 304.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:03,067 INFO L168 Benchmark]: Boogie Preprocessor took 31.18 ms. Allocated memory is still 343.9 MB. Free memory was 304.8 MB in the beginning and 303.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:03,068 INFO L168 Benchmark]: RCFGBuilder took 478.15 ms. Allocated memory is still 343.9 MB. Free memory was 303.6 MB in the beginning and 281.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:03,068 INFO L168 Benchmark]: TraceAbstraction took 3923.14 ms. Allocated memory was 343.9 MB in the beginning and 413.1 MB in the end (delta: 69.2 MB). Free memory was 281.3 MB in the beginning and 168.6 MB in the end (delta: 112.6 MB). Peak memory consumption was 184.9 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:03,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 160.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 487.80 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 232.9 MB in the beginning and 307.1 MB in the end (delta: -74.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.56 ms. Allocated memory is still 343.9 MB. Free memory was 307.1 MB in the beginning and 304.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.18 ms. Allocated memory is still 343.9 MB. Free memory was 304.8 MB in the beginning and 303.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 478.15 ms. Allocated memory is still 343.9 MB. Free memory was 303.6 MB in the beginning and 281.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3923.14 ms. Allocated memory was 343.9 MB in the beginning and 413.1 MB in the end (delta: 69.2 MB). Free memory was 281.3 MB in the beginning and 168.6 MB in the end (delta: 112.6 MB). Peak memory consumption was 184.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1569.0ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 681, positive: 634, positive conditional: 0, positive unconditional: 634, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 447, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 447, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 681, positive: 206, positive conditional: 0, positive unconditional: 206, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 447, unknown conditional: 0, unknown unconditional: 447] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 823.3ms, 40 PlacesBefore, 34 PlacesAfterwards, 25 TransitionsBefore, 22 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 102 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.0ms, 39 PlacesBefore, 37 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 172 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 93 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 41, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, 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: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 41, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 77.5ms, 46 PlacesBefore, 43 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 136 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 378 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 164, positive: 133, positive conditional: 0, positive unconditional: 133, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 164, positive: 128, positive conditional: 0, positive unconditional: 128, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 72.6ms, 45 PlacesBefore, 42 PlacesAfterwards, 25 TransitionsBefore, 24 TransitionsAfterwards, 146 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 188 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, 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: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 46, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 73.8ms, 40 PlacesBefore, 37 PlacesAfterwards, 20 TransitionsBefore, 18 TransitionsAfterwards, 88 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 91 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 33, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 9, negative conditional: 0, negative unconditional: 9, 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: 33, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2ms, 29 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): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - 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: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3837.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 402.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1640.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 55 SDtfs, 51 SDslu, 60 SDs, 0 SdLazy, 110 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 170.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=4, InterpolantAutomatonStates: 34, 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: 23.5ms SsaConstructionTime, 160.1ms SatisfiabilityAnalysisTime, 383.0ms InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 401 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...