/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/safe030_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:09:16,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:09:16,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:09:16,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:09:16,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:09:16,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:09:16,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:09:16,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:09:16,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:09:16,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:09:16,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:09:16,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:09:16,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:09:16,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:09:16,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:09:16,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:09:16,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:09:16,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:09:16,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:09:16,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:09:16,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:09:16,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:09:16,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:09:16,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:09:16,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:09:16,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:09:16,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:09:16,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:09:16,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:09:16,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:09:16,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:09:16,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:09:16,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:09:16,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:09:16,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:09:16,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:09:16,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:09:16,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:09:16,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:09:16,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:09:16,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:09:16,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 05:09:16,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:09:16,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:09:16,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:09:16,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:09:16,172 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:09:16,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:09:16,172 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:09:16,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:09:16,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:09:16,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:09:16,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:09:16,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:09:16,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:09:16,173 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:09:16,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:09:16,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:09:16,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:09:16,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:09:16,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:09:16,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:09:16,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:09:16,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:09:16,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:09:16,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:09:16,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:09:16,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:09:16,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:09:16,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:09:16,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:09:16,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:09:16,175 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:09:16,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:09:16,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:09:16,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:09:16,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:09:16,518 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:09:16,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_pso.oepc.i [2021-03-25 05:09:16,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef0d6424/ac8ac6f3324143caa2a513e4434e8c36/FLAG37a8abe8a [2021-03-25 05:09:17,151 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:09:17,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_pso.oepc.i [2021-03-25 05:09:17,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef0d6424/ac8ac6f3324143caa2a513e4434e8c36/FLAG37a8abe8a [2021-03-25 05:09:17,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ef0d6424/ac8ac6f3324143caa2a513e4434e8c36 [2021-03-25 05:09:17,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:09:17,571 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:09:17,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:09:17,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:09:17,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:09:17,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:09:17" (1/1) ... [2021-03-25 05:09:17,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ceee96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:17, skipping insertion in model container [2021-03-25 05:09:17,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:09:17" (1/1) ... [2021-03-25 05:09:17,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:09:17,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:09:17,852 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/safe030_pso.oepc.i[950,963] [2021-03-25 05:09:18,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:09:18,080 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:09:18,093 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/safe030_pso.oepc.i[950,963] [2021-03-25 05:09:18,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:09:18,230 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:09:18,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18 WrapperNode [2021-03-25 05:09:18,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:09:18,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:09:18,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:09:18,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:09:18,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:09:18,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:09:18,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:09:18,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:09:18,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:09:18,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:09:18,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:09:18,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:09:18,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:09:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:09:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:09:18,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:09:18,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:09:18,396 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:09:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:09:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:09:18,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:09:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:09:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:09:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:09:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:09:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:09:18,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:09:18,400 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:09:20,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:09:20,220 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-25 05:09:20,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:09:20 BoogieIcfgContainer [2021-03-25 05:09:20,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:09:20,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:09:20,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:09:20,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:09:20,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:09:17" (1/3) ... [2021-03-25 05:09:20,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f49b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:09:20, skipping insertion in model container [2021-03-25 05:09:20,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (2/3) ... [2021-03-25 05:09:20,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f49b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:09:20, skipping insertion in model container [2021-03-25 05:09:20,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:09:20" (3/3) ... [2021-03-25 05:09:20,228 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_pso.oepc.i [2021-03-25 05:09:20,234 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:09:20,237 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 05:09:20,238 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:09:20,269 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,270 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,270 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,271 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,271 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,271 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,271 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,271 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,271 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,271 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,272 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,272 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,272 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,272 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,276 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,279 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,279 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,279 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,279 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,279 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,279 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,279 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,281 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,281 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,281 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,281 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,281 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,282 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,282 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,283 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,283 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,285 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,288 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,292 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,294 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,295 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,302 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,303 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,303 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:20,306 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:09:20,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 05:09:20,344 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:09:20,344 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:09:20,344 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:09:20,344 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:09:20,344 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:09:20,344 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:09:20,344 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:09:20,344 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:09:20,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 207 flow [2021-03-25 05:09:20,382 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-25 05:09:20,382 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:20,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2021-03-25 05:09:20,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 207 flow [2021-03-25 05:09:20,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 93 transitions, 195 flow [2021-03-25 05:09:20,390 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:20,397 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-25 05:09:20,399 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-25 05:09:20,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 195 flow [2021-03-25 05:09:20,416 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-25 05:09:20,416 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:20,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2021-03-25 05:09:20,419 INFO L142 LiptonReduction]: Number of co-enabled transitions 1694 [2021-03-25 05:09:22,068 WARN L205 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 185 [2021-03-25 05:09:22,343 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2021-03-25 05:09:23,566 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 310 DAG size of output: 266 [2021-03-25 05:09:24,179 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-25 05:09:24,466 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-25 05:09:24,807 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2021-03-25 05:09:24,919 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-25 05:09:25,729 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-25 05:09:26,030 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-25 05:09:26,657 WARN L205 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2021-03-25 05:09:27,298 WARN L205 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2021-03-25 05:09:27,716 INFO L154 LiptonReduction]: Checked pairs total: 3269 [2021-03-25 05:09:27,716 INFO L156 LiptonReduction]: Total number of compositions: 66 [2021-03-25 05:09:27,718 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7329 [2021-03-25 05:09:27,725 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-25 05:09:27,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:27,725 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:27,726 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:27,726 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:27,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:27,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1228534299, now seen corresponding path program 1 times [2021-03-25 05:09:27,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:27,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55858294] [2021-03-25 05:09:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:27,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:27,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:27,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:27,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:27,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55858294] [2021-03-25 05:09:27,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:27,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:27,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725485465] [2021-03-25 05:09:27,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:27,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:27,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:27,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:27,990 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 162 [2021-03-25 05:09:27,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:27,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:27,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 162 [2021-03-25 05:09:27,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:28,090 INFO L129 PetriNetUnfolder]: 69/177 cut-off events. [2021-03-25 05:09:28,090 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:28,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 177 events. 69/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 787 event pairs, 54 based on Foata normal form. 11/169 useless extension candidates. Maximal degree in co-relation 285. Up to 89 conditions per place. [2021-03-25 05:09:28,094 INFO L132 encePairwiseOnDemand]: 158/162 looper letters, 9 selfloop transitions, 2 changer transitions 3/40 dead transitions. [2021-03-25 05:09:28,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 115 flow [2021-03-25 05:09:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:28,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2021-03-25 05:09:28,112 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8786008230452675 [2021-03-25 05:09:28,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2021-03-25 05:09:28,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2021-03-25 05:09:28,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:28,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2021-03-25 05:09:28,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 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 05:09:28,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:28,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:28,131 INFO L185 Difference]: Start difference. First operand has 47 places, 38 transitions, 85 flow. Second operand 3 states and 427 transitions. [2021-03-25 05:09:28,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 115 flow [2021-03-25 05:09:28,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:09:28,135 INFO L241 Difference]: Finished difference. Result has 44 places, 33 transitions, 76 flow [2021-03-25 05:09:28,137 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2021-03-25 05:09:28,137 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2021-03-25 05:09:28,138 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:28,138 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 33 transitions, 76 flow [2021-03-25 05:09:28,139 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 33 transitions, 76 flow [2021-03-25 05:09:28,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 33 transitions, 76 flow [2021-03-25 05:09:28,146 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2021-03-25 05:09:28,146 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:28,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 33 events. 0/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 05:09:28,147 INFO L142 LiptonReduction]: Number of co-enabled transitions 264 [2021-03-25 05:09:28,788 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-03-25 05:09:29,124 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-03-25 05:09:29,753 WARN L205 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2021-03-25 05:09:30,400 WARN L205 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2021-03-25 05:09:30,735 INFO L154 LiptonReduction]: Checked pairs total: 1218 [2021-03-25 05:09:30,735 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 05:09:30,735 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2597 [2021-03-25 05:09:30,736 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 58 flow [2021-03-25 05:09:30,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:30,737 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:30,737 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:30,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:09:30,737 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:30,737 INFO L82 PathProgramCache]: Analyzing trace with hash 666798904, now seen corresponding path program 1 times [2021-03-25 05:09:30,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:30,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967795657] [2021-03-25 05:09:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:30,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:30,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:30,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:09:30,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:09:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:30,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967795657] [2021-03-25 05:09:30,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:30,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:30,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193861225] [2021-03-25 05:09:30,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:30,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:30,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:30,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:30,848 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 171 [2021-03-25 05:09:30,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:30,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:30,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 171 [2021-03-25 05:09:30,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:30,864 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2021-03-25 05:09:30,864 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:30,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 1 based on Foata normal form. 1/35 useless extension candidates. Maximal degree in co-relation 46. Up to 10 conditions per place. [2021-03-25 05:09:30,865 INFO L132 encePairwiseOnDemand]: 167/171 looper letters, 3 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2021-03-25 05:09:30,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 74 flow [2021-03-25 05:09:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2021-03-25 05:09:30,867 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8732943469785575 [2021-03-25 05:09:30,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2021-03-25 05:09:30,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2021-03-25 05:09:30,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:30,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2021-03-25 05:09:30,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:30,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:30,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:30,870 INFO L185 Difference]: Start difference. First operand has 33 places, 24 transitions, 58 flow. Second operand 3 states and 448 transitions. [2021-03-25 05:09:30,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 74 flow [2021-03-25 05:09:30,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:30,871 INFO L241 Difference]: Finished difference. Result has 34 places, 26 transitions, 73 flow [2021-03-25 05:09:30,872 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2021-03-25 05:09:30,872 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -13 predicate places. [2021-03-25 05:09:30,872 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:30,872 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 26 transitions, 73 flow [2021-03-25 05:09:30,873 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 26 transitions, 73 flow [2021-03-25 05:09:30,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 73 flow [2021-03-25 05:09:30,877 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2021-03-25 05:09:30,877 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:09:30,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 36 events. 3/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 1 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2021-03-25 05:09:30,878 INFO L142 LiptonReduction]: Number of co-enabled transitions 262 [2021-03-25 05:09:31,434 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2021-03-25 05:09:31,555 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-03-25 05:09:31,857 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2021-03-25 05:09:31,986 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-03-25 05:09:31,990 INFO L154 LiptonReduction]: Checked pairs total: 804 [2021-03-25 05:09:31,990 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:09:31,990 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1118 [2021-03-25 05:09:31,991 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 69 flow [2021-03-25 05:09:31,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,992 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:09:31,992 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1655839146, now seen corresponding path program 1 times [2021-03-25 05:09:31,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366360789] [2021-03-25 05:09:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:32,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:32,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:32,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:32,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:32,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366360789] [2021-03-25 05:09:32,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:32,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:32,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665692549] [2021-03-25 05:09:32,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:32,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:32,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:32,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:32,162 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 173 [2021-03-25 05:09:32,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:32,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 173 [2021-03-25 05:09:32,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,249 INFO L129 PetriNetUnfolder]: 125/249 cut-off events. [2021-03-25 05:09:32,249 INFO L130 PetriNetUnfolder]: For 25/40 co-relation queries the response was YES. [2021-03-25 05:09:32,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 249 events. 125/249 cut-off events. For 25/40 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1075 event pairs, 48 based on Foata normal form. 3/237 useless extension candidates. Maximal degree in co-relation 492. Up to 183 conditions per place. [2021-03-25 05:09:32,252 INFO L132 encePairwiseOnDemand]: 166/173 looper letters, 9 selfloop transitions, 8 changer transitions 0/33 dead transitions. [2021-03-25 05:09:32,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 123 flow [2021-03-25 05:09:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2021-03-25 05:09:32,254 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7890173410404624 [2021-03-25 05:09:32,255 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2021-03-25 05:09:32,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2021-03-25 05:09:32,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2021-03-25 05:09:32,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,258 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,258 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 69 flow. Second operand 4 states and 546 transitions. [2021-03-25 05:09:32,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 123 flow [2021-03-25 05:09:32,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:32,260 INFO L241 Difference]: Finished difference. Result has 36 places, 31 transitions, 121 flow [2021-03-25 05:09:32,260 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2021-03-25 05:09:32,260 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -11 predicate places. [2021-03-25 05:09:32,260 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,261 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 31 transitions, 121 flow [2021-03-25 05:09:32,261 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 31 transitions, 121 flow [2021-03-25 05:09:32,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 31 transitions, 121 flow [2021-03-25 05:09:32,282 INFO L129 PetriNetUnfolder]: 67/165 cut-off events. [2021-03-25 05:09:32,282 INFO L130 PetriNetUnfolder]: For 63/76 co-relation queries the response was YES. [2021-03-25 05:09:32,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 165 events. 67/165 cut-off events. For 63/76 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 772 event pairs, 27 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 365. Up to 96 conditions per place. [2021-03-25 05:09:32,285 INFO L142 LiptonReduction]: Number of co-enabled transitions 336 [2021-03-25 05:09:32,288 INFO L154 LiptonReduction]: Checked pairs total: 87 [2021-03-25 05:09:32,288 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:32,289 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 05:09:32,289 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 121 flow [2021-03-25 05:09:32,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,290 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:32,290 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:32,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:09:32,290 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash -154268743, now seen corresponding path program 1 times [2021-03-25 05:09:32,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:32,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411058544] [2021-03-25 05:09:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:32,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:32,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:32,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411058544] [2021-03-25 05:09:32,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:32,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:32,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879864640] [2021-03-25 05:09:32,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:32,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:32,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:32,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:32,358 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 173 [2021-03-25 05:09:32,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:32,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 173 [2021-03-25 05:09:32,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,393 INFO L129 PetriNetUnfolder]: 50/181 cut-off events. [2021-03-25 05:09:32,394 INFO L130 PetriNetUnfolder]: For 130/211 co-relation queries the response was YES. [2021-03-25 05:09:32,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 181 events. 50/181 cut-off events. For 130/211 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 993 event pairs, 18 based on Foata normal form. 13/179 useless extension candidates. Maximal degree in co-relation 369. Up to 83 conditions per place. [2021-03-25 05:09:32,396 INFO L132 encePairwiseOnDemand]: 170/173 looper letters, 4 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2021-03-25 05:09:32,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 135 flow [2021-03-25 05:09:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2021-03-25 05:09:32,399 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.884393063583815 [2021-03-25 05:09:32,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2021-03-25 05:09:32,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2021-03-25 05:09:32,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2021-03-25 05:09:32,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,402 INFO L185 Difference]: Start difference. First operand has 36 places, 31 transitions, 121 flow. Second operand 3 states and 459 transitions. [2021-03-25 05:09:32,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 135 flow [2021-03-25 05:09:32,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 135 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 05:09:32,404 INFO L241 Difference]: Finished difference. Result has 39 places, 31 transitions, 134 flow [2021-03-25 05:09:32,405 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2021-03-25 05:09:32,405 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -8 predicate places. [2021-03-25 05:09:32,405 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,405 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 31 transitions, 134 flow [2021-03-25 05:09:32,405 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 31 transitions, 134 flow [2021-03-25 05:09:32,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 31 transitions, 134 flow [2021-03-25 05:09:32,431 INFO L129 PetriNetUnfolder]: 75/204 cut-off events. [2021-03-25 05:09:32,432 INFO L130 PetriNetUnfolder]: For 160/203 co-relation queries the response was YES. [2021-03-25 05:09:32,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 204 events. 75/204 cut-off events. For 160/203 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1083 event pairs, 32 based on Foata normal form. 1/184 useless extension candidates. Maximal degree in co-relation 449. Up to 110 conditions per place. [2021-03-25 05:09:32,436 INFO L142 LiptonReduction]: Number of co-enabled transitions 336 [2021-03-25 05:09:32,442 INFO L154 LiptonReduction]: Checked pairs total: 129 [2021-03-25 05:09:32,442 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:32,443 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-25 05:09:32,444 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 134 flow [2021-03-25 05:09:32,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,444 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:32,444 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:32,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:09:32,444 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:32,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:32,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1241950160, now seen corresponding path program 1 times [2021-03-25 05:09:32,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:32,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219213556] [2021-03-25 05:09:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:32,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:32,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219213556] [2021-03-25 05:09:32,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:32,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:09:32,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580062893] [2021-03-25 05:09:32,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:32,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:32,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:32,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:32,527 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 173 [2021-03-25 05:09:32,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:32,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 173 [2021-03-25 05:09:32,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,572 INFO L129 PetriNetUnfolder]: 77/248 cut-off events. [2021-03-25 05:09:32,573 INFO L130 PetriNetUnfolder]: For 315/370 co-relation queries the response was YES. [2021-03-25 05:09:32,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 248 events. 77/248 cut-off events. For 315/370 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1463 event pairs, 19 based on Foata normal form. 4/233 useless extension candidates. Maximal degree in co-relation 575. Up to 120 conditions per place. [2021-03-25 05:09:32,575 INFO L132 encePairwiseOnDemand]: 169/173 looper letters, 4 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2021-03-25 05:09:32,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 152 flow [2021-03-25 05:09:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2021-03-25 05:09:32,577 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8863198458574181 [2021-03-25 05:09:32,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2021-03-25 05:09:32,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2021-03-25 05:09:32,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2021-03-25 05:09:32,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,580 INFO L185 Difference]: Start difference. First operand has 39 places, 31 transitions, 134 flow. Second operand 3 states and 460 transitions. [2021-03-25 05:09:32,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 152 flow [2021-03-25 05:09:32,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 147 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:32,583 INFO L241 Difference]: Finished difference. Result has 41 places, 33 transitions, 150 flow [2021-03-25 05:09:32,583 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2021-03-25 05:09:32,583 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -6 predicate places. [2021-03-25 05:09:32,584 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,584 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 33 transitions, 150 flow [2021-03-25 05:09:32,585 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 33 transitions, 150 flow [2021-03-25 05:09:32,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 33 transitions, 150 flow [2021-03-25 05:09:32,623 INFO L129 PetriNetUnfolder]: 108/265 cut-off events. [2021-03-25 05:09:32,623 INFO L130 PetriNetUnfolder]: For 397/441 co-relation queries the response was YES. [2021-03-25 05:09:32,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 265 events. 108/265 cut-off events. For 397/441 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1432 event pairs, 42 based on Foata normal form. 2/231 useless extension candidates. Maximal degree in co-relation 672. Up to 142 conditions per place. [2021-03-25 05:09:32,626 INFO L142 LiptonReduction]: Number of co-enabled transitions 370 [2021-03-25 05:09:32,635 INFO L154 LiptonReduction]: Checked pairs total: 77 [2021-03-25 05:09:32,636 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:32,636 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 52 [2021-03-25 05:09:32,644 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 150 flow [2021-03-25 05:09:32,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,644 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:32,644 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:32,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:09:32,645 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:32,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:32,645 INFO L82 PathProgramCache]: Analyzing trace with hash -154267472, now seen corresponding path program 1 times [2021-03-25 05:09:32,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:32,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837072518] [2021-03-25 05:09:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:32,765 INFO L142 QuantifierPusher]: treesize reduction 31, result has 55.7 percent of original size [2021-03-25 05:09:32,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-25 05:09:32,795 INFO L142 QuantifierPusher]: treesize reduction 30, result has 25.0 percent of original size [2021-03-25 05:09:32,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 05:09:32,806 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.9 percent of original size [2021-03-25 05:09:32,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-03-25 05:09:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:32,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837072518] [2021-03-25 05:09:32,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:32,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:32,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119774766] [2021-03-25 05:09:32,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:32,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:32,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:32,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:32,848 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 173 [2021-03-25 05:09:32,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:32,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 173 [2021-03-25 05:09:32,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,956 INFO L129 PetriNetUnfolder]: 189/409 cut-off events. [2021-03-25 05:09:32,956 INFO L130 PetriNetUnfolder]: For 840/1115 co-relation queries the response was YES. [2021-03-25 05:09:32,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 409 events. 189/409 cut-off events. For 840/1115 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2234 event pairs, 54 based on Foata normal form. 21/405 useless extension candidates. Maximal degree in co-relation 1218. Up to 301 conditions per place. [2021-03-25 05:09:32,960 INFO L132 encePairwiseOnDemand]: 168/173 looper letters, 16 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2021-03-25 05:09:32,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 240 flow [2021-03-25 05:09:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2021-03-25 05:09:32,963 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8131021194605009 [2021-03-25 05:09:32,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2021-03-25 05:09:32,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2021-03-25 05:09:32,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2021-03-25 05:09:32,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,966 INFO L185 Difference]: Start difference. First operand has 41 places, 33 transitions, 150 flow. Second operand 3 states and 422 transitions. [2021-03-25 05:09:32,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 240 flow [2021-03-25 05:09:32,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:32,971 INFO L241 Difference]: Finished difference. Result has 43 places, 39 transitions, 214 flow [2021-03-25 05:09:32,971 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2021-03-25 05:09:32,971 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2021-03-25 05:09:32,971 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,972 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 39 transitions, 214 flow [2021-03-25 05:09:32,972 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 39 transitions, 214 flow [2021-03-25 05:09:32,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 39 transitions, 214 flow [2021-03-25 05:09:33,008 INFO L129 PetriNetUnfolder]: 86/246 cut-off events. [2021-03-25 05:09:33,008 INFO L130 PetriNetUnfolder]: For 355/407 co-relation queries the response was YES. [2021-03-25 05:09:33,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 246 events. 86/246 cut-off events. For 355/407 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1320 event pairs, 31 based on Foata normal form. 6/228 useless extension candidates. Maximal degree in co-relation 694. Up to 122 conditions per place. [2021-03-25 05:09:33,012 INFO L142 LiptonReduction]: Number of co-enabled transitions 408 [2021-03-25 05:09:33,025 INFO L154 LiptonReduction]: Checked pairs total: 124 [2021-03-25 05:09:33,025 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:33,025 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 54 [2021-03-25 05:09:33,027 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 214 flow [2021-03-25 05:09:33,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,027 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:33,027 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:33,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:09:33,027 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:33,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:33,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1715084159, now seen corresponding path program 1 times [2021-03-25 05:09:33,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:33,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651597438] [2021-03-25 05:09:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:33,127 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.5 percent of original size [2021-03-25 05:09:33,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-25 05:09:33,209 INFO L142 QuantifierPusher]: treesize reduction 27, result has 71.9 percent of original size [2021-03-25 05:09:33,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-25 05:09:33,265 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-25 05:09:33,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 05:09:33,296 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-25 05:09:33,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 05:09:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:33,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651597438] [2021-03-25 05:09:33,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:33,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:33,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442710270] [2021-03-25 05:09:33,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:33,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:33,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:33,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:33,333 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 173 [2021-03-25 05:09:33,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 123.83333333333333) internal successors, (743), 6 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:33,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 173 [2021-03-25 05:09:33,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:33,523 INFO L129 PetriNetUnfolder]: 189/415 cut-off events. [2021-03-25 05:09:33,523 INFO L130 PetriNetUnfolder]: For 1098/1485 co-relation queries the response was YES. [2021-03-25 05:09:33,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 415 events. 189/415 cut-off events. For 1098/1485 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2314 event pairs, 40 based on Foata normal form. 82/475 useless extension candidates. Maximal degree in co-relation 1436. Up to 291 conditions per place. [2021-03-25 05:09:33,529 INFO L132 encePairwiseOnDemand]: 167/173 looper letters, 10 selfloop transitions, 14 changer transitions 0/42 dead transitions. [2021-03-25 05:09:33,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 272 flow [2021-03-25 05:09:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:33,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 509 transitions. [2021-03-25 05:09:33,532 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7355491329479769 [2021-03-25 05:09:33,532 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 509 transitions. [2021-03-25 05:09:33,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 509 transitions. [2021-03-25 05:09:33,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:33,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 509 transitions. [2021-03-25 05:09:33,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,535 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,535 INFO L185 Difference]: Start difference. First operand has 43 places, 39 transitions, 214 flow. Second operand 4 states and 509 transitions. [2021-03-25 05:09:33,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 272 flow [2021-03-25 05:09:33,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:33,538 INFO L241 Difference]: Finished difference. Result has 46 places, 41 transitions, 258 flow [2021-03-25 05:09:33,539 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2021-03-25 05:09:33,539 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2021-03-25 05:09:33,539 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:33,539 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 41 transitions, 258 flow [2021-03-25 05:09:33,539 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 41 transitions, 258 flow [2021-03-25 05:09:33,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 41 transitions, 258 flow [2021-03-25 05:09:33,576 INFO L129 PetriNetUnfolder]: 104/250 cut-off events. [2021-03-25 05:09:33,576 INFO L130 PetriNetUnfolder]: For 679/781 co-relation queries the response was YES. [2021-03-25 05:09:33,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 250 events. 104/250 cut-off events. For 679/781 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1299 event pairs, 37 based on Foata normal form. 9/230 useless extension candidates. Maximal degree in co-relation 887. Up to 138 conditions per place. [2021-03-25 05:09:33,580 INFO L142 LiptonReduction]: Number of co-enabled transitions 416 [2021-03-25 05:09:33,591 INFO L154 LiptonReduction]: Checked pairs total: 226 [2021-03-25 05:09:33,592 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:33,592 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 53 [2021-03-25 05:09:33,595 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 258 flow [2021-03-25 05:09:33,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 123.83333333333333) internal successors, (743), 6 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,595 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:33,596 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:33,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:09:33,596 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:33,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1190176988, now seen corresponding path program 1 times [2021-03-25 05:09:33,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:33,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767079977] [2021-03-25 05:09:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:33,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:33,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:33,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:33,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 05:09:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:33,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767079977] [2021-03-25 05:09:33,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:33,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:33,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145638270] [2021-03-25 05:09:33,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:33,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:33,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:33,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:33,662 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 173 [2021-03-25 05:09:33,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:33,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 173 [2021-03-25 05:09:33,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:33,757 INFO L129 PetriNetUnfolder]: 209/436 cut-off events. [2021-03-25 05:09:33,757 INFO L130 PetriNetUnfolder]: For 1588/2102 co-relation queries the response was YES. [2021-03-25 05:09:33,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1697 conditions, 436 events. 209/436 cut-off events. For 1588/2102 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2350 event pairs, 53 based on Foata normal form. 41/452 useless extension candidates. Maximal degree in co-relation 1676. Up to 270 conditions per place. [2021-03-25 05:09:33,761 INFO L132 encePairwiseOnDemand]: 166/173 looper letters, 22 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2021-03-25 05:09:33,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 364 flow [2021-03-25 05:09:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2021-03-25 05:09:33,764 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8121387283236994 [2021-03-25 05:09:33,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2021-03-25 05:09:33,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2021-03-25 05:09:33,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:33,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2021-03-25 05:09:33,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,767 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,767 INFO L185 Difference]: Start difference. First operand has 46 places, 41 transitions, 258 flow. Second operand 4 states and 562 transitions. [2021-03-25 05:09:33,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 364 flow [2021-03-25 05:09:33,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:33,771 INFO L241 Difference]: Finished difference. Result has 48 places, 45 transitions, 289 flow [2021-03-25 05:09:33,771 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2021-03-25 05:09:33,772 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2021-03-25 05:09:33,772 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:33,772 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 45 transitions, 289 flow [2021-03-25 05:09:33,772 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 45 transitions, 289 flow [2021-03-25 05:09:33,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 45 transitions, 289 flow [2021-03-25 05:09:33,817 INFO L129 PetriNetUnfolder]: 162/383 cut-off events. [2021-03-25 05:09:33,818 INFO L130 PetriNetUnfolder]: For 1197/1329 co-relation queries the response was YES. [2021-03-25 05:09:33,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1361 conditions, 383 events. 162/383 cut-off events. For 1197/1329 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2280 event pairs, 47 based on Foata normal form. 7/360 useless extension candidates. Maximal degree in co-relation 1341. Up to 177 conditions per place. [2021-03-25 05:09:33,822 INFO L142 LiptonReduction]: Number of co-enabled transitions 436 [2021-03-25 05:09:33,835 INFO L154 LiptonReduction]: Checked pairs total: 88 [2021-03-25 05:09:33,836 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:33,836 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-25 05:09:33,836 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 289 flow [2021-03-25 05:09:33,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,836 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:33,837 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:33,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:09:33,837 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:33,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:33,837 INFO L82 PathProgramCache]: Analyzing trace with hash -166394858, now seen corresponding path program 2 times [2021-03-25 05:09:33,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:33,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410421203] [2021-03-25 05:09:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:33,898 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.9 percent of original size [2021-03-25 05:09:33,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-03-25 05:09:33,934 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size [2021-03-25 05:09:33,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 05:09:33,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:33,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:33,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410421203] [2021-03-25 05:09:33,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:33,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:33,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429741669] [2021-03-25 05:09:33,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:33,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:33,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:33,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:33,987 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 173 [2021-03-25 05:09:33,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:33,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 173 [2021-03-25 05:09:33,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:34,098 INFO L129 PetriNetUnfolder]: 195/417 cut-off events. [2021-03-25 05:09:34,098 INFO L130 PetriNetUnfolder]: For 1738/2269 co-relation queries the response was YES. [2021-03-25 05:09:34,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 417 events. 195/417 cut-off events. For 1738/2269 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2282 event pairs, 35 based on Foata normal form. 55/449 useless extension candidates. Maximal degree in co-relation 1761. Up to 262 conditions per place. [2021-03-25 05:09:34,102 INFO L132 encePairwiseOnDemand]: 169/173 looper letters, 25 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2021-03-25 05:09:34,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 375 flow [2021-03-25 05:09:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2021-03-25 05:09:34,104 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7861271676300579 [2021-03-25 05:09:34,105 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2021-03-25 05:09:34,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2021-03-25 05:09:34,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:34,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2021-03-25 05:09:34,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,107 INFO L185 Difference]: Start difference. First operand has 48 places, 45 transitions, 289 flow. Second operand 4 states and 544 transitions. [2021-03-25 05:09:34,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 375 flow [2021-03-25 05:09:34,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 363 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:34,112 INFO L241 Difference]: Finished difference. Result has 51 places, 45 transitions, 295 flow [2021-03-25 05:09:34,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2021-03-25 05:09:34,113 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2021-03-25 05:09:34,113 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:34,113 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 45 transitions, 295 flow [2021-03-25 05:09:34,113 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 45 transitions, 295 flow [2021-03-25 05:09:34,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 295 flow [2021-03-25 05:09:34,152 INFO L129 PetriNetUnfolder]: 153/357 cut-off events. [2021-03-25 05:09:34,153 INFO L130 PetriNetUnfolder]: For 1310/1408 co-relation queries the response was YES. [2021-03-25 05:09:34,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 357 events. 153/357 cut-off events. For 1310/1408 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2017 event pairs, 64 based on Foata normal form. 9/324 useless extension candidates. Maximal degree in co-relation 1306. Up to 167 conditions per place. [2021-03-25 05:09:34,157 INFO L142 LiptonReduction]: Number of co-enabled transitions 436 [2021-03-25 05:09:34,164 INFO L154 LiptonReduction]: Checked pairs total: 64 [2021-03-25 05:09:34,164 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:34,164 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 51 [2021-03-25 05:09:34,166 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 295 flow [2021-03-25 05:09:34,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,166 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:34,166 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:34,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:09:34,167 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:34,167 INFO L82 PathProgramCache]: Analyzing trace with hash -488293455, now seen corresponding path program 1 times [2021-03-25 05:09:34,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:34,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353586065] [2021-03-25 05:09:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:34,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:34,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:34,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:34,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:34,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353586065] [2021-03-25 05:09:34,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:34,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:34,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525909312] [2021-03-25 05:09:34,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:34,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:34,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:34,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:34,210 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 173 [2021-03-25 05:09:34,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:34,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 173 [2021-03-25 05:09:34,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:34,319 INFO L129 PetriNetUnfolder]: 192/475 cut-off events. [2021-03-25 05:09:34,319 INFO L130 PetriNetUnfolder]: For 2623/2902 co-relation queries the response was YES. [2021-03-25 05:09:34,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 475 events. 192/475 cut-off events. For 2623/2902 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2956 event pairs, 66 based on Foata normal form. 41/491 useless extension candidates. Maximal degree in co-relation 1637. Up to 212 conditions per place. [2021-03-25 05:09:34,323 INFO L132 encePairwiseOnDemand]: 170/173 looper letters, 3 selfloop transitions, 3 changer transitions 2/45 dead transitions. [2021-03-25 05:09:34,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 307 flow [2021-03-25 05:09:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2021-03-25 05:09:34,325 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.884393063583815 [2021-03-25 05:09:34,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2021-03-25 05:09:34,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2021-03-25 05:09:34,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:34,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2021-03-25 05:09:34,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,327 INFO L185 Difference]: Start difference. First operand has 51 places, 45 transitions, 295 flow. Second operand 3 states and 459 transitions. [2021-03-25 05:09:34,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 307 flow [2021-03-25 05:09:34,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 297 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:34,330 INFO L241 Difference]: Finished difference. Result has 52 places, 43 transitions, 279 flow [2021-03-25 05:09:34,330 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2021-03-25 05:09:34,331 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2021-03-25 05:09:34,331 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:34,331 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 43 transitions, 279 flow [2021-03-25 05:09:34,331 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 43 transitions, 279 flow [2021-03-25 05:09:34,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 43 transitions, 279 flow [2021-03-25 05:09:34,379 INFO L129 PetriNetUnfolder]: 178/464 cut-off events. [2021-03-25 05:09:34,379 INFO L130 PetriNetUnfolder]: For 1556/1764 co-relation queries the response was YES. [2021-03-25 05:09:34,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 464 events. 178/464 cut-off events. For 1556/1764 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3042 event pairs, 83 based on Foata normal form. 18/431 useless extension candidates. Maximal degree in co-relation 1570. Up to 218 conditions per place. [2021-03-25 05:09:34,385 INFO L142 LiptonReduction]: Number of co-enabled transitions 420 [2021-03-25 05:09:34,397 INFO L154 LiptonReduction]: Checked pairs total: 27 [2021-03-25 05:09:34,398 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:34,398 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 67 [2021-03-25 05:09:34,399 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 279 flow [2021-03-25 05:09:34,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,399 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:34,399 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:34,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 05:09:34,400 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:34,400 INFO L82 PathProgramCache]: Analyzing trace with hash 958745407, now seen corresponding path program 1 times [2021-03-25 05:09:34,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:34,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623466703] [2021-03-25 05:09:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:34,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:34,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 05:09:34,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:34,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 05:09:34,470 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.2 percent of original size [2021-03-25 05:09:34,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-25 05:09:34,490 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-03-25 05:09:34,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-25 05:09:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:34,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623466703] [2021-03-25 05:09:34,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:34,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:34,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158544314] [2021-03-25 05:09:34,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:34,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:34,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:34,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:34,511 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 173 [2021-03-25 05:09:34,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 132.83333333333334) internal successors, (797), 6 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:34,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 173 [2021-03-25 05:09:34,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:34,698 INFO L129 PetriNetUnfolder]: 254/582 cut-off events. [2021-03-25 05:09:34,698 INFO L130 PetriNetUnfolder]: For 2460/3143 co-relation queries the response was YES. [2021-03-25 05:09:34,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2358 conditions, 582 events. 254/582 cut-off events. For 2460/3143 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3638 event pairs, 24 based on Foata normal form. 67/624 useless extension candidates. Maximal degree in co-relation 2334. Up to 340 conditions per place. [2021-03-25 05:09:34,704 INFO L132 encePairwiseOnDemand]: 165/173 looper letters, 14 selfloop transitions, 18 changer transitions 0/50 dead transitions. [2021-03-25 05:09:34,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 387 flow [2021-03-25 05:09:34,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:09:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:09:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 813 transitions. [2021-03-25 05:09:34,706 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7832369942196532 [2021-03-25 05:09:34,706 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 813 transitions. [2021-03-25 05:09:34,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 813 transitions. [2021-03-25 05:09:34,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:34,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 813 transitions. [2021-03-25 05:09:34,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,712 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,712 INFO L185 Difference]: Start difference. First operand has 52 places, 43 transitions, 279 flow. Second operand 6 states and 813 transitions. [2021-03-25 05:09:34,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 387 flow [2021-03-25 05:09:34,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 382 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:34,716 INFO L241 Difference]: Finished difference. Result has 57 places, 47 transitions, 356 flow [2021-03-25 05:09:34,716 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2021-03-25 05:09:34,716 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2021-03-25 05:09:34,716 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:34,716 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 47 transitions, 356 flow [2021-03-25 05:09:34,717 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 47 transitions, 356 flow [2021-03-25 05:09:34,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 47 transitions, 356 flow [2021-03-25 05:09:34,783 INFO L129 PetriNetUnfolder]: 250/601 cut-off events. [2021-03-25 05:09:34,783 INFO L130 PetriNetUnfolder]: For 2298/2532 co-relation queries the response was YES. [2021-03-25 05:09:34,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 601 events. 250/601 cut-off events. For 2298/2532 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3982 event pairs, 55 based on Foata normal form. 22/597 useless extension candidates. Maximal degree in co-relation 2418. Up to 321 conditions per place. [2021-03-25 05:09:34,791 INFO L142 LiptonReduction]: Number of co-enabled transitions 466 [2021-03-25 05:09:34,817 INFO L154 LiptonReduction]: Checked pairs total: 106 [2021-03-25 05:09:34,817 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:34,817 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 101 [2021-03-25 05:09:34,819 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 356 flow [2021-03-25 05:09:34,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 132.83333333333334) internal successors, (797), 6 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:34,819 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:34,819 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:34,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 05:09:34,820 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:34,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:34,820 INFO L82 PathProgramCache]: Analyzing trace with hash -141868673, now seen corresponding path program 2 times [2021-03-25 05:09:34,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:34,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681041929] [2021-03-25 05:09:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:34,896 INFO L142 QuantifierPusher]: treesize reduction 30, result has 25.0 percent of original size [2021-03-25 05:09:34,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 05:09:34,905 INFO L142 QuantifierPusher]: treesize reduction 31, result has 55.7 percent of original size [2021-03-25 05:09:34,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-25 05:09:34,935 INFO L142 QuantifierPusher]: treesize reduction 31, result has 57.5 percent of original size [2021-03-25 05:09:34,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-25 05:09:34,969 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-25 05:09:34,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 05:09:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:34,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681041929] [2021-03-25 05:09:34,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:34,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:34,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880672648] [2021-03-25 05:09:34,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:34,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:34,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:34,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:34,999 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 173 [2021-03-25 05:09:35,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:35,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 173 [2021-03-25 05:09:35,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:35,205 INFO L129 PetriNetUnfolder]: 262/618 cut-off events. [2021-03-25 05:09:35,205 INFO L130 PetriNetUnfolder]: For 3358/4234 co-relation queries the response was YES. [2021-03-25 05:09:35,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 618 events. 262/618 cut-off events. For 3358/4234 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4029 event pairs, 19 based on Foata normal form. 81/675 useless extension candidates. Maximal degree in co-relation 2955. Up to 342 conditions per place. [2021-03-25 05:09:35,210 INFO L132 encePairwiseOnDemand]: 166/173 looper letters, 20 selfloop transitions, 17 changer transitions 0/55 dead transitions. [2021-03-25 05:09:35,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 496 flow [2021-03-25 05:09:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:09:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:09:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 788 transitions. [2021-03-25 05:09:35,212 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7591522157996147 [2021-03-25 05:09:35,213 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 788 transitions. [2021-03-25 05:09:35,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 788 transitions. [2021-03-25 05:09:35,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:35,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 788 transitions. [2021-03-25 05:09:35,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,217 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,217 INFO L185 Difference]: Start difference. First operand has 57 places, 47 transitions, 356 flow. Second operand 6 states and 788 transitions. [2021-03-25 05:09:35,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 496 flow [2021-03-25 05:09:35,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 463 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-25 05:09:35,224 INFO L241 Difference]: Finished difference. Result has 60 places, 50 transitions, 404 flow [2021-03-25 05:09:35,225 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2021-03-25 05:09:35,225 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2021-03-25 05:09:35,225 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:35,225 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 50 transitions, 404 flow [2021-03-25 05:09:35,225 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 50 transitions, 404 flow [2021-03-25 05:09:35,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 50 transitions, 404 flow [2021-03-25 05:09:35,326 INFO L129 PetriNetUnfolder]: 256/628 cut-off events. [2021-03-25 05:09:35,326 INFO L130 PetriNetUnfolder]: For 3329/3550 co-relation queries the response was YES. [2021-03-25 05:09:35,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2813 conditions, 628 events. 256/628 cut-off events. For 3329/3550 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4319 event pairs, 54 based on Foata normal form. 27/633 useless extension candidates. Maximal degree in co-relation 2788. Up to 336 conditions per place. [2021-03-25 05:09:35,337 INFO L142 LiptonReduction]: Number of co-enabled transitions 500 [2021-03-25 05:09:35,372 INFO L154 LiptonReduction]: Checked pairs total: 198 [2021-03-25 05:09:35,372 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:35,373 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 148 [2021-03-25 05:09:35,374 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 404 flow [2021-03-25 05:09:35,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,375 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:35,375 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:35,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 05:09:35,375 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:35,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:35,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2042755311, now seen corresponding path program 1 times [2021-03-25 05:09:35,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:35,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113696582] [2021-03-25 05:09:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:35,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:35,421 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:09:35,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:09:35,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:35,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113696582] [2021-03-25 05:09:35,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:35,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:35,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495161759] [2021-03-25 05:09:35,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:35,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:35,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:35,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:35,431 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 173 [2021-03-25 05:09:35,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 404 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:35,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 173 [2021-03-25 05:09:35,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:35,606 INFO L129 PetriNetUnfolder]: 564/1204 cut-off events. [2021-03-25 05:09:35,607 INFO L130 PetriNetUnfolder]: For 5270/6000 co-relation queries the response was YES. [2021-03-25 05:09:35,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4416 conditions, 1204 events. 564/1204 cut-off events. For 5270/6000 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 9056 event pairs, 174 based on Foata normal form. 278/1279 useless extension candidates. Maximal degree in co-relation 4389. Up to 659 conditions per place. [2021-03-25 05:09:35,618 INFO L132 encePairwiseOnDemand]: 167/173 looper letters, 13 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2021-03-25 05:09:35,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 438 flow [2021-03-25 05:09:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2021-03-25 05:09:35,621 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8265895953757225 [2021-03-25 05:09:35,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 715 transitions. [2021-03-25 05:09:35,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 715 transitions. [2021-03-25 05:09:35,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:35,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 715 transitions. [2021-03-25 05:09:35,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,625 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,625 INFO L185 Difference]: Start difference. First operand has 60 places, 50 transitions, 404 flow. Second operand 5 states and 715 transitions. [2021-03-25 05:09:35,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 438 flow [2021-03-25 05:09:35,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 413 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-25 05:09:35,631 INFO L241 Difference]: Finished difference. Result has 63 places, 54 transitions, 421 flow [2021-03-25 05:09:35,632 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=421, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2021-03-25 05:09:35,632 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2021-03-25 05:09:35,632 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:35,632 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions, 421 flow [2021-03-25 05:09:35,632 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 54 transitions, 421 flow [2021-03-25 05:09:35,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions, 421 flow [2021-03-25 05:09:35,748 INFO L129 PetriNetUnfolder]: 459/1040 cut-off events. [2021-03-25 05:09:35,748 INFO L130 PetriNetUnfolder]: For 4670/5034 co-relation queries the response was YES. [2021-03-25 05:09:35,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4500 conditions, 1040 events. 459/1040 cut-off events. For 4670/5034 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7715 event pairs, 144 based on Foata normal form. 92/1068 useless extension candidates. Maximal degree in co-relation 4472. Up to 464 conditions per place. [2021-03-25 05:09:35,767 INFO L142 LiptonReduction]: Number of co-enabled transitions 598 [2021-03-25 05:09:35,775 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:09:35,775 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:35,775 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 143 [2021-03-25 05:09:35,775 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 421 flow [2021-03-25 05:09:35,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,776 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:35,776 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:35,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 05:09:35,776 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:35,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:35,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1843360672, now seen corresponding path program 1 times [2021-03-25 05:09:35,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:35,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229121153] [2021-03-25 05:09:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:35,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:35,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:35,829 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:09:35,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:09:35,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:35,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229121153] [2021-03-25 05:09:35,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:35,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:35,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079838764] [2021-03-25 05:09:35,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:35,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:35,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:35,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:35,841 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 173 [2021-03-25 05:09:35,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:35,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 173 [2021-03-25 05:09:35,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:35,983 INFO L129 PetriNetUnfolder]: 327/818 cut-off events. [2021-03-25 05:09:35,984 INFO L130 PetriNetUnfolder]: For 5202/7308 co-relation queries the response was YES. [2021-03-25 05:09:35,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 818 events. 327/818 cut-off events. For 5202/7308 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6108 event pairs, 22 based on Foata normal form. 565/1279 useless extension candidates. Maximal degree in co-relation 3357. Up to 449 conditions per place. [2021-03-25 05:09:35,992 INFO L132 encePairwiseOnDemand]: 167/173 looper letters, 9 selfloop transitions, 15 changer transitions 3/63 dead transitions. [2021-03-25 05:09:35,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 506 flow [2021-03-25 05:09:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:09:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:09:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1001 transitions. [2021-03-25 05:09:35,995 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8265895953757225 [2021-03-25 05:09:35,995 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1001 transitions. [2021-03-25 05:09:35,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1001 transitions. [2021-03-25 05:09:35,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:35,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1001 transitions. [2021-03-25 05:09:35,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:36,000 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:36,000 INFO L185 Difference]: Start difference. First operand has 63 places, 54 transitions, 421 flow. Second operand 7 states and 1001 transitions. [2021-03-25 05:09:36,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 506 flow [2021-03-25 05:09:36,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 491 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 05:09:36,006 INFO L241 Difference]: Finished difference. Result has 69 places, 58 transitions, 478 flow [2021-03-25 05:09:36,006 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2021-03-25 05:09:36,006 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2021-03-25 05:09:36,006 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:36,007 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 58 transitions, 478 flow [2021-03-25 05:09:36,007 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 58 transitions, 478 flow [2021-03-25 05:09:36,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 58 transitions, 478 flow [2021-03-25 05:09:36,068 INFO L129 PetriNetUnfolder]: 202/610 cut-off events. [2021-03-25 05:09:36,069 INFO L130 PetriNetUnfolder]: For 3457/3799 co-relation queries the response was YES. [2021-03-25 05:09:36,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 610 events. 202/610 cut-off events. For 3457/3799 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4716 event pairs, 22 based on Foata normal form. 71/656 useless extension candidates. Maximal degree in co-relation 2849. Up to 316 conditions per place. [2021-03-25 05:09:36,079 INFO L142 LiptonReduction]: Number of co-enabled transitions 642 [2021-03-25 05:09:36,085 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:09:36,085 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:36,085 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 79 [2021-03-25 05:09:36,085 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 478 flow [2021-03-25 05:09:36,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:36,086 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:36,086 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:36,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 05:09:36,086 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:36,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:36,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1168328609, now seen corresponding path program 1 times [2021-03-25 05:09:36,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:36,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717075565] [2021-03-25 05:09:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:36,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:36,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:36,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:36,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:36,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:36,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:36,199 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:09:36,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:09:36,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:36,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:36,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717075565] [2021-03-25 05:09:36,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:36,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:09:36,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560539508] [2021-03-25 05:09:36,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:36,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:36,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:36,210 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 173 [2021-03-25 05:09:36,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:36,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:36,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 173 [2021-03-25 05:09:36,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:36,367 INFO L129 PetriNetUnfolder]: 269/703 cut-off events. [2021-03-25 05:09:36,367 INFO L130 PetriNetUnfolder]: For 7989/11255 co-relation queries the response was YES. [2021-03-25 05:09:36,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3341 conditions, 703 events. 269/703 cut-off events. For 7989/11255 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 5293 event pairs, 4 based on Foata normal form. 542/1145 useless extension candidates. Maximal degree in co-relation 3308. Up to 411 conditions per place. [2021-03-25 05:09:36,375 INFO L132 encePairwiseOnDemand]: 167/173 looper letters, 5 selfloop transitions, 19 changer transitions 9/64 dead transitions. [2021-03-25 05:09:36,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 558 flow [2021-03-25 05:09:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 05:09:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 05:09:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1281 transitions. [2021-03-25 05:09:36,378 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8227360308285164 [2021-03-25 05:09:36,378 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1281 transitions. [2021-03-25 05:09:36,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1281 transitions. [2021-03-25 05:09:36,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:36,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1281 transitions. [2021-03-25 05:09:36,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 142.33333333333334) internal successors, (1281), 9 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:36,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:36,384 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:36,384 INFO L185 Difference]: Start difference. First operand has 69 places, 58 transitions, 478 flow. Second operand 9 states and 1281 transitions. [2021-03-25 05:09:36,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 558 flow [2021-03-25 05:09:36,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 493 flow, removed 26 selfloop flow, removed 3 redundant places. [2021-03-25 05:09:36,397 INFO L241 Difference]: Finished difference. Result has 77 places, 53 transitions, 419 flow [2021-03-25 05:09:36,397 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=419, PETRI_PLACES=77, PETRI_TRANSITIONS=53} [2021-03-25 05:09:36,397 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2021-03-25 05:09:36,398 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:36,398 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 53 transitions, 419 flow [2021-03-25 05:09:36,398 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 53 transitions, 419 flow [2021-03-25 05:09:36,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 53 transitions, 419 flow [2021-03-25 05:09:36,443 INFO L129 PetriNetUnfolder]: 140/469 cut-off events. [2021-03-25 05:09:36,443 INFO L130 PetriNetUnfolder]: For 2531/2678 co-relation queries the response was YES. [2021-03-25 05:09:36,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 469 events. 140/469 cut-off events. For 2531/2678 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 3671 event pairs, 4 based on Foata normal form. 43/488 useless extension candidates. Maximal degree in co-relation 2045. Up to 130 conditions per place. [2021-03-25 05:09:36,450 INFO L142 LiptonReduction]: Number of co-enabled transitions 560 [2021-03-25 05:09:36,645 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-25 05:09:37,109 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2021-03-25 05:09:37,250 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-25 05:09:37,811 WARN L205 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 180 [2021-03-25 05:09:38,010 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-03-25 05:09:39,891 WARN L205 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 334 DAG size of output: 260 [2021-03-25 05:09:40,375 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2021-03-25 05:09:40,644 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2021-03-25 05:09:40,870 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2021-03-25 05:09:41,389 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2021-03-25 05:09:41,931 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2021-03-25 05:09:41,941 INFO L154 LiptonReduction]: Checked pairs total: 57 [2021-03-25 05:09:41,941 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 05:09:41,941 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5543 [2021-03-25 05:09:41,941 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 395 flow [2021-03-25 05:09:41,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:41,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:41,942 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:41,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 05:09:41,942 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:41,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1546168699, now seen corresponding path program 1 times [2021-03-25 05:09:41,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:41,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691063039] [2021-03-25 05:09:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:42,032 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.0 percent of original size [2021-03-25 05:09:42,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 05:09:42,076 INFO L142 QuantifierPusher]: treesize reduction 6, result has 93.8 percent of original size [2021-03-25 05:09:42,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-25 05:09:42,135 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.6 percent of original size [2021-03-25 05:09:42,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-25 05:09:42,198 INFO L142 QuantifierPusher]: treesize reduction 2, result has 97.7 percent of original size [2021-03-25 05:09:42,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-03-25 05:09:42,267 INFO L142 QuantifierPusher]: treesize reduction 5, result has 92.9 percent of original size [2021-03-25 05:09:42,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-25 05:09:42,336 INFO L142 QuantifierPusher]: treesize reduction 175, result has 30.8 percent of original size [2021-03-25 05:09:42,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-03-25 05:09:42,376 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-03-25 05:09:42,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-25 05:09:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:42,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691063039] [2021-03-25 05:09:42,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:42,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 05:09:42,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981501660] [2021-03-25 05:09:42,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 05:09:42,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:42,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 05:09:42,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-25 05:09:42,408 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 176 [2021-03-25 05:09:42,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 395 flow. Second operand has 9 states, 9 states have (on average 127.88888888888889) internal successors, (1151), 9 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:42,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:42,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 176 [2021-03-25 05:09:42,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:42,611 INFO L129 PetriNetUnfolder]: 108/312 cut-off events. [2021-03-25 05:09:42,611 INFO L130 PetriNetUnfolder]: For 2005/2252 co-relation queries the response was YES. [2021-03-25 05:09:42,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 312 events. 108/312 cut-off events. For 2005/2252 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1939 event pairs, 0 based on Foata normal form. 57/356 useless extension candidates. Maximal degree in co-relation 1502. Up to 109 conditions per place. [2021-03-25 05:09:42,614 INFO L132 encePairwiseOnDemand]: 171/176 looper letters, 10 selfloop transitions, 4 changer transitions 17/50 dead transitions. [2021-03-25 05:09:42,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 50 transitions, 471 flow [2021-03-25 05:09:42,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:09:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:09:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 778 transitions. [2021-03-25 05:09:42,617 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7367424242424242 [2021-03-25 05:09:42,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 778 transitions. [2021-03-25 05:09:42,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 778 transitions. [2021-03-25 05:09:42,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:42,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 778 transitions. [2021-03-25 05:09:42,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:42,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:42,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:42,621 INFO L185 Difference]: Start difference. First operand has 74 places, 48 transitions, 395 flow. Second operand 6 states and 778 transitions. [2021-03-25 05:09:42,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 50 transitions, 471 flow [2021-03-25 05:09:42,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 393 flow, removed 22 selfloop flow, removed 13 redundant places. [2021-03-25 05:09:42,627 INFO L241 Difference]: Finished difference. Result has 61 places, 31 transitions, 211 flow [2021-03-25 05:09:42,627 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=61, PETRI_TRANSITIONS=31} [2021-03-25 05:09:42,627 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2021-03-25 05:09:42,627 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:42,627 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 31 transitions, 211 flow [2021-03-25 05:09:42,628 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 31 transitions, 211 flow [2021-03-25 05:09:42,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 31 transitions, 211 flow [2021-03-25 05:09:42,634 INFO L129 PetriNetUnfolder]: 15/55 cut-off events. [2021-03-25 05:09:42,634 INFO L130 PetriNetUnfolder]: For 183/193 co-relation queries the response was YES. [2021-03-25 05:09:42,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 55 events. 15/55 cut-off events. For 183/193 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 118 event pairs, 1 based on Foata normal form. 3/57 useless extension candidates. Maximal degree in co-relation 191. Up to 17 conditions per place. [2021-03-25 05:09:42,635 INFO L142 LiptonReduction]: Number of co-enabled transitions 136 [2021-03-25 05:09:42,868 INFO L154 LiptonReduction]: Checked pairs total: 27 [2021-03-25 05:09:42,868 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:09:42,868 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 241 [2021-03-25 05:09:42,869 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 28 transitions, 207 flow [2021-03-25 05:09:42,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 127.88888888888889) internal successors, (1151), 9 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:42,884 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:42,884 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:42,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 05:09:42,884 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:42,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1381073433, now seen corresponding path program 1 times [2021-03-25 05:09:42,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:42,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252430442] [2021-03-25 05:09:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 05:09:42,911 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 05:09:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 05:09:42,940 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 05:09:42,981 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 05:09:42,982 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 05:09:42,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 05:09:43,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:09:43 BasicIcfg [2021-03-25 05:09:43,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:09:43,076 INFO L168 Benchmark]: Toolchain (without parser) took 25504.78 ms. Allocated memory was 255.9 MB in the beginning and 736.1 MB in the end (delta: 480.2 MB). Free memory was 234.0 MB in the beginning and 674.7 MB in the end (delta: -440.8 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:43,077 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.4 MB in the end (delta: 178.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:09:43,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.58 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 233.4 MB in the beginning and 310.9 MB in the end (delta: -77.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:43,077 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 352.3 MB. Free memory was 310.9 MB in the beginning and 308.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:43,077 INFO L168 Benchmark]: Boogie Preprocessor took 28.18 ms. Allocated memory is still 352.3 MB. Free memory was 308.1 MB in the beginning and 306.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:43,077 INFO L168 Benchmark]: RCFGBuilder took 1911.88 ms. Allocated memory is still 352.3 MB. Free memory was 306.0 MB in the beginning and 301.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:43,078 INFO L168 Benchmark]: TraceAbstraction took 22852.41 ms. Allocated memory was 352.3 MB in the beginning and 736.1 MB in the end (delta: 383.8 MB). Free memory was 301.8 MB in the beginning and 674.7 MB in the end (delta: -372.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:43,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.4 MB in the end (delta: 178.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 660.58 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 233.4 MB in the beginning and 310.9 MB in the end (delta: -77.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 352.3 MB. Free memory was 310.9 MB in the beginning and 308.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.18 ms. Allocated memory is still 352.3 MB. Free memory was 308.1 MB in the beginning and 306.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1911.88 ms. Allocated memory is still 352.3 MB. Free memory was 306.0 MB in the beginning and 301.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 68.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 22852.41 ms. Allocated memory was 352.3 MB in the beginning and 736.1 MB in the end (delta: 383.8 MB). Free memory was 301.8 MB in the beginning and 674.7 MB in the end (delta: -372.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7317.5ms, 101 PlacesBefore, 47 PlacesAfterwards, 93 TransitionsBefore, 38 TransitionsAfterwards, 1694 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 66 TotalNumberOfCompositions, 3269 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1628, positive: 1532, positive conditional: 0, positive unconditional: 1532, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 846, positive: 821, positive conditional: 0, positive unconditional: 821, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 846, positive: 821, positive conditional: 0, positive unconditional: 821, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1628, positive: 711, positive conditional: 0, positive unconditional: 711, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 846, unknown conditional: 0, unknown unconditional: 846] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2596.7ms, 44 PlacesBefore, 33 PlacesAfterwards, 33 TransitionsBefore, 24 TransitionsAfterwards, 264 CoEnabledTransitionPairs, 4 FixpointIterations, 8 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 1218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 277, positive: 190, positive conditional: 0, positive unconditional: 190, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 24, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 24, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 277, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1117.6ms, 34 PlacesBefore, 32 PlacesAfterwards, 26 TransitionsBefore, 24 TransitionsAfterwards, 262 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 804 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 189, positive: 135, positive conditional: 0, positive unconditional: 135, negative: 54, negative conditional: 0, negative unconditional: 54, 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: 189, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 93, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.5ms, 36 PlacesBefore, 36 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 336 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 87 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 9, positive: 2, positive conditional: 0, positive unconditional: 2, 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): 95, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.3ms, 39 PlacesBefore, 39 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 336 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 129 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 51.0ms, 41 PlacesBefore, 41 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 77 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, 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: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 53.2ms, 43 PlacesBefore, 43 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 408 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 124 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 8, negative conditional: 0, negative unconditional: 8, 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: 15, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 52.3ms, 46 PlacesBefore, 46 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 416 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 226 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 97, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 63.6ms, 48 PlacesBefore, 48 PlacesAfterwards, 45 TransitionsBefore, 45 TransitionsAfterwards, 436 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 88 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 98, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 51.0ms, 51 PlacesBefore, 51 PlacesAfterwards, 45 TransitionsBefore, 45 TransitionsAfterwards, 436 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 64 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 98, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 66.7ms, 52 PlacesBefore, 52 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 27 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, 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: 7, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 98, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 100.4ms, 57 PlacesBefore, 57 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 466 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 102, Positive cache size: 82, Positive conditional cache size: 0, Positive unconditional cache size: 82, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 147.3ms, 60 PlacesBefore, 60 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 500 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 198 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 46, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 142.7ms, 63 PlacesBefore, 63 PlacesAfterwards, 54 TransitionsBefore, 54 TransitionsAfterwards, 598 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): 103, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 78.1ms, 69 PlacesBefore, 69 PlacesAfterwards, 58 TransitionsBefore, 58 TransitionsAfterwards, 642 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): 103, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5542.9ms, 77 PlacesBefore, 74 PlacesAfterwards, 53 TransitionsBefore, 48 TransitionsAfterwards, 560 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 57 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57, positive: 57, positive conditional: 0, positive unconditional: 57, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 57, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 240.3ms, 61 PlacesBefore, 55 PlacesAfterwards, 31 TransitionsBefore, 28 TransitionsAfterwards, 136 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 27 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L710] 0 _Bool main$tmp_guard0; [L711] 0 _Bool main$tmp_guard1; [L713] 0 int x = 0; [L715] 0 int y = 0; [L717] 0 int z = 0; [L718] 0 _Bool z$flush_delayed; [L719] 0 int z$mem_tmp; [L720] 0 _Bool z$r_buff0_thd0; [L721] 0 _Bool z$r_buff0_thd1; [L722] 0 _Bool z$r_buff0_thd2; [L723] 0 _Bool z$r_buff0_thd3; [L724] 0 _Bool z$r_buff1_thd0; [L725] 0 _Bool z$r_buff1_thd1; [L726] 0 _Bool z$r_buff1_thd2; [L727] 0 _Bool z$r_buff1_thd3; [L728] 0 _Bool z$read_delayed; [L729] 0 int *z$read_delayed_var; [L730] 0 int z$w_buff0; [L731] 0 _Bool z$w_buff0_used; [L732] 0 int z$w_buff1; [L733] 0 _Bool z$w_buff1_used; [L734] 0 _Bool weak$$choice0; [L735] 0 _Bool weak$$choice2; [L816] 0 pthread_t t2495; [L817] FCALL, FORK 0 pthread_create(&t2495, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L739] 1 z$w_buff1 = z$w_buff0 [L740] 1 z$w_buff0 = 2 [L741] 1 z$w_buff1_used = z$w_buff0_used [L742] 1 z$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L744] 1 z$r_buff1_thd0 = z$r_buff0_thd0 [L745] 1 z$r_buff1_thd1 = z$r_buff0_thd1 [L746] 1 z$r_buff1_thd2 = z$r_buff0_thd2 [L747] 1 z$r_buff1_thd3 = z$r_buff0_thd3 [L748] 1 z$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L751] 1 x = 1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L818] 0 pthread_t t2496; [L819] FCALL, FORK 0 pthread_create(&t2496, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L768] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L771] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L774] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd2 ? z$w_buff1 : z) [L774] EXPR 2 z$w_buff1_used && z$r_buff1_thd2 ? z$w_buff1 : z [L774] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd2 ? z$w_buff1 : z) [L774] 2 z = z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd2 ? z$w_buff1 : z) [L775] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used [L775] 2 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used [L776] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$w_buff1_used [L776] 2 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$w_buff1_used [L777] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2 [L777] 2 z$r_buff0_thd2 = z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2 [L778] EXPR 2 z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$r_buff1_thd2 [L778] 2 z$r_buff1_thd2 = z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$r_buff1_thd2 [L820] 0 pthread_t t2497; [L821] FCALL, FORK 0 pthread_create(&t2497, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L788] 3 y = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L791] 3 z = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L794] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L794] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L794] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L794] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L795] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L795] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L796] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L796] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L797] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L797] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L798] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L798] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L754] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd1 ? z$w_buff1 : z) [L754] 1 z = z$w_buff0_used && z$r_buff0_thd1 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd1 ? z$w_buff1 : z) [L755] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$w_buff0_used [L755] 1 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$w_buff0_used [L756] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$w_buff1_used [L756] 1 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$w_buff1_used [L757] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$r_buff0_thd1 [L757] 1 z$r_buff0_thd1 = z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$r_buff0_thd1 [L758] EXPR 1 z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$r_buff1_thd1 [L758] 1 z$r_buff1_thd1 = z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$r_buff1_thd1 [L761] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L763] 1 return 0; [L781] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L783] 2 return 0; [L801] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L803] 3 return 0; [L823] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L827] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L827] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L827] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L827] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L828] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L828] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L829] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L829] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L830] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L830] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L831] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L831] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L834] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L835] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L836] 0 z$flush_delayed = weak$$choice2 [L837] 0 z$mem_tmp = z [L838] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L838] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L839] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L839] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L840] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L840] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L841] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L841] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L842] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L842] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L843] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L843] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L844] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L844] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L845] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2) [L846] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L846] 0 z = z$flush_delayed ? z$mem_tmp : z [L847] 0 z$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=54, weak$$choice2=255, x=2, y=2, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 95 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 22642.1ms, OverallIterations: 17, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2282.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7378.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69 SDtfs, 40 SDslu, 20 SDs, 0 SdLazy, 398 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 524.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1142.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=478occurred in iteration=14, InterpolantAutomatonStates: 73, 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: 48.1ms SsaConstructionTime, 524.6ms SatisfiabilityAnalysisTime, 1715.1ms InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 2601 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...