/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:04:13,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:04:13,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:04:13,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:04:13,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:04:13,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:04:13,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:04:13,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:04:13,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:04:13,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:04:13,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:04:13,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:04:13,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:04:13,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:04:13,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:04:13,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:04:13,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:04:13,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:04:13,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:04:13,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:04:13,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:04:13,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:04:13,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:04:13,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:04:13,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 11:04:13,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 11:04:13,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 11:04:13,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 11:04:13,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 11:04:13,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 11:04:13,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:04:13,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:04:13,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:04:13,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:04:13,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:04:13,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:04:13,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:04:13,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:04:13,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:04:13,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:04:13,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:04:13,162 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-VariableLbe.epf [2021-03-24 11:04:13,188 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:04:13,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:04:13,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:04:13,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:04:13,191 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:04:13,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:04:13,191 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:04:13,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:04:13,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:04:13,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:04:13,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:04:13,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:04:13,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:04:13,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:04:13,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:04:13,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:04:13,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:04:13,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:04:13,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:04:13,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:04:13,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:04:13,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:04:13,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:04:13,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:04:13,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:04:13,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:04:13,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:04:13,194 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:04:13,194 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:04:13,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:04:13,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:04:13,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:04:13,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:04:13,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:04:13,427 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:04:13,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-03-24 11:04:13,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd5c161b/7d20eb43a720499493b89585dd67778c/FLAG7d9b3372c [2021-03-24 11:04:13,884 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:04:13,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-03-24 11:04:13,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd5c161b/7d20eb43a720499493b89585dd67778c/FLAG7d9b3372c [2021-03-24 11:04:13,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd5c161b/7d20eb43a720499493b89585dd67778c [2021-03-24 11:04:13,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:04:13,914 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:04:13,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:04:13,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:04:13,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:04:13,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:04:13" (1/1) ... [2021-03-24 11:04:13,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656f20b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:13, skipping insertion in model container [2021-03-24 11:04:13,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:04:13" (1/1) ... [2021-03-24 11:04:13,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:04:13,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:04:14,116 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/safe018_pso.oepc.i[950,963] [2021-03-24 11:04:14,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:04:14,255 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:04:14,263 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/safe018_pso.oepc.i[950,963] [2021-03-24 11:04:14,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:04:14,350 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:04:14,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14 WrapperNode [2021-03-24 11:04:14,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:04:14,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:04:14,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:04:14,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:04:14,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (1/1) ... [2021-03-24 11:04:14,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (1/1) ... [2021-03-24 11:04:14,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:04:14,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:04:14,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:04:14,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:04:14,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (1/1) ... [2021-03-24 11:04:14,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (1/1) ... [2021-03-24 11:04:14,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (1/1) ... [2021-03-24 11:04:14,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (1/1) ... [2021-03-24 11:04:14,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (1/1) ... [2021-03-24 11:04:14,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (1/1) ... [2021-03-24 11:04:14,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (1/1) ... [2021-03-24 11:04:14,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:04:14,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:04:14,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:04:14,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:04:14,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (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 [2021-03-24 11:04:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:04:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:04:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:04:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:04:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:04:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:04:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:04:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:04:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:04:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:04:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:04:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:04:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:04:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:04:14,467 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:04:14,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:04:14,678 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:04:14,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:04:14 BoogieIcfgContainer [2021-03-24 11:04:14,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:04:14,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:04:14,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:04:14,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:04:14,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:04:13" (1/3) ... [2021-03-24 11:04:14,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1422ac2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:04:14, skipping insertion in model container [2021-03-24 11:04:14,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:04:14" (2/3) ... [2021-03-24 11:04:14,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1422ac2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:04:14, skipping insertion in model container [2021-03-24 11:04:14,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:04:14" (3/3) ... [2021-03-24 11:04:14,685 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2021-03-24 11:04:14,688 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:04:14,690 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:04:14,691 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:04:14,712 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,712 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,712 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,712 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,712 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,713 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,713 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,713 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,715 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,715 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,715 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,715 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,716 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,716 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,716 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,716 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,717 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,717 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,717 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,719 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,719 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,719 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,729 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,729 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,732 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:04:14,736 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:04:14,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 11:04:14,768 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:04:14,768 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:04:14,768 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:04:14,768 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:04:14,768 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:04:14,768 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:04:14,768 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:04:14,768 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:04:14,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 11:04:14,818 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-24 11:04:14,819 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:04:14,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-24 11:04:14,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 11:04:14,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-24 11:04:14,826 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:04:14,839 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 11:04:14,841 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 11:04:14,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-24 11:04:14,859 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-24 11:04:14,859 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:04:14,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-24 11:04:14,862 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-24 11:04:15,877 INFO L154 LiptonReduction]: Checked pairs total: 984 [2021-03-24 11:04:15,877 INFO L156 LiptonReduction]: Total number of compositions: 39 [2021-03-24 11:04:15,878 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1052 [2021-03-24 11:04:15,884 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 11:04:15,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:04:15,885 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:04:15,885 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:04:15,885 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:04:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:04:15,888 INFO L82 PathProgramCache]: Analyzing trace with hash 933445281, now seen corresponding path program 1 times [2021-03-24 11:04:15,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:04:15,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638092572] [2021-03-24 11:04:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:04:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:04:16,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:04:16,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:04:16,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638092572] [2021-03-24 11:04:16,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:04:16,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:04:16,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151557836] [2021-03-24 11:04:16,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:04:16,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:04:16,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:04:16,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:04:16,066 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 113 [2021-03-24 11:04:16,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2021-03-24 11:04:16,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:04:16,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 113 [2021-03-24 11:04:16,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:04:16,076 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-24 11:04:16,076 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:04:16,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 11:04:16,077 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2021-03-24 11:04:16,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 55 flow [2021-03-24 11:04:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:04:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:04:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-24 11:04:16,085 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8967551622418879 [2021-03-24 11:04:16,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-24 11:04:16,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-24 11:04:16,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:04:16,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-24 11:04:16,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2021-03-24 11:04:16,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 11:04:16,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 11:04:16,093 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 3 states and 304 transitions. [2021-03-24 11:04:16,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 55 flow [2021-03-24 11:04:16,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 52 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 11:04:16,096 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 54 flow [2021-03-24 11:04:16,097 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2021-03-24 11:04:16,097 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-03-24 11:04:16,097 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 54 flow [2021-03-24 11:04:16,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2021-03-24 11:04:16,098 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:04:16,098 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:04:16,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:04:16,098 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:04:16,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:04:16,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1128518235, now seen corresponding path program 1 times [2021-03-24 11:04:16,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:04:16,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879240506] [2021-03-24 11:04:16,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:04:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:04:16,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:04:16,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,143 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:04:16,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:04:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:04:16,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879240506] [2021-03-24 11:04:16,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:04:16,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:04:16,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915842816] [2021-03-24 11:04:16,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:04:16,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:04:16,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:04:16,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:04:16,151 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 113 [2021-03-24 11:04:16,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-03-24 11:04:16,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:04:16,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 113 [2021-03-24 11:04:16,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:04:16,179 INFO L129 PetriNetUnfolder]: 14/64 cut-off events. [2021-03-24 11:04:16,180 INFO L130 PetriNetUnfolder]: For 19/47 co-relation queries the response was YES. [2021-03-24 11:04:16,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 64 events. 14/64 cut-off events. For 19/47 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 243 event pairs, 1 based on Foata normal form. 5/68 useless extension candidates. Maximal degree in co-relation 115. Up to 21 conditions per place. [2021-03-24 11:04:16,180 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 7 selfloop transitions, 10 changer transitions 0/30 dead transitions. [2021-03-24 11:04:16,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 119 flow [2021-03-24 11:04:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:04:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:04:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2021-03-24 11:04:16,183 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8212389380530973 [2021-03-24 11:04:16,183 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2021-03-24 11:04:16,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2021-03-24 11:04:16,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:04:16,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2021-03-24 11:04:16,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2021-03-24 11:04:16,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 11:04:16,186 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 11:04:16,186 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 54 flow. Second operand 5 states and 464 transitions. [2021-03-24 11:04:16,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 119 flow [2021-03-24 11:04:16,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:04:16,187 INFO L241 Difference]: Finished difference. Result has 35 places, 27 transitions, 115 flow [2021-03-24 11:04:16,187 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2021-03-24 11:04:16,188 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-24 11:04:16,188 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 115 flow [2021-03-24 11:04:16,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-03-24 11:04:16,188 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:04:16,188 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:04:16,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:04:16,188 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:04:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:04:16,189 INFO L82 PathProgramCache]: Analyzing trace with hash -624967164, now seen corresponding path program 1 times [2021-03-24 11:04:16,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:04:16,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170735336] [2021-03-24 11:04:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:04:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:04:16,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:04:16,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:04:16,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170735336] [2021-03-24 11:04:16,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:04:16,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:04:16,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260877752] [2021-03-24 11:04:16,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:04:16,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:04:16,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:04:16,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:04:16,230 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 113 [2021-03-24 11:04:16,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 115 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:04:16,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:04:16,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 113 [2021-03-24 11:04:16,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:04:16,247 INFO L129 PetriNetUnfolder]: 9/63 cut-off events. [2021-03-24 11:04:16,247 INFO L130 PetriNetUnfolder]: For 74/144 co-relation queries the response was YES. [2021-03-24 11:04:16,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 63 events. 9/63 cut-off events. For 74/144 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 255 event pairs, 0 based on Foata normal form. 7/68 useless extension candidates. Maximal degree in co-relation 155. Up to 18 conditions per place. [2021-03-24 11:04:16,247 INFO L132 encePairwiseOnDemand]: 108/113 looper letters, 4 selfloop transitions, 6 changer transitions 4/30 dead transitions. [2021-03-24 11:04:16,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 162 flow [2021-03-24 11:04:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:04:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:04:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2021-03-24 11:04:16,249 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8561946902654868 [2021-03-24 11:04:16,249 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2021-03-24 11:04:16,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2021-03-24 11:04:16,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:04:16,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2021-03-24 11:04:16,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:04:16,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:04:16,251 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:04:16,251 INFO L185 Difference]: Start difference. First operand has 35 places, 27 transitions, 115 flow. Second operand 4 states and 387 transitions. [2021-03-24 11:04:16,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 162 flow [2021-03-24 11:04:16,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 11:04:16,253 INFO L241 Difference]: Finished difference. Result has 40 places, 24 transitions, 122 flow [2021-03-24 11:04:16,253 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2021-03-24 11:04:16,254 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-24 11:04:16,254 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 122 flow [2021-03-24 11:04:16,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:04:16,254 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:04:16,254 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:04:16,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:04:16,254 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:04:16,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:04:16,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1071001538, now seen corresponding path program 1 times [2021-03-24 11:04:16,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:04:16,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964163082] [2021-03-24 11:04:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:04:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:04:16,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:04:16,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:04:16,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964163082] [2021-03-24 11:04:16,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:04:16,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:04:16,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992983709] [2021-03-24 11:04:16,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:04:16,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:04:16,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:04:16,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:04:16,295 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 113 [2021-03-24 11:04:16,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2021-03-24 11:04:16,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:04:16,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 113 [2021-03-24 11:04:16,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:04:16,305 INFO L129 PetriNetUnfolder]: 4/33 cut-off events. [2021-03-24 11:04:16,305 INFO L130 PetriNetUnfolder]: For 77/92 co-relation queries the response was YES. [2021-03-24 11:04:16,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 33 events. 4/33 cut-off events. For 77/92 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 2 based on Foata normal form. 2/34 useless extension candidates. Maximal degree in co-relation 81. Up to 11 conditions per place. [2021-03-24 11:04:16,306 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 1 selfloop transitions, 4 changer transitions 0/24 dead transitions. [2021-03-24 11:04:16,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 24 transitions, 132 flow [2021-03-24 11:04:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:04:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:04:16,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-24 11:04:16,307 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8967551622418879 [2021-03-24 11:04:16,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-24 11:04:16,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-24 11:04:16,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:04:16,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-24 11:04:16,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2021-03-24 11:04:16,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 11:04:16,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 11:04:16,309 INFO L185 Difference]: Start difference. First operand has 40 places, 24 transitions, 122 flow. Second operand 3 states and 304 transitions. [2021-03-24 11:04:16,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 24 transitions, 132 flow [2021-03-24 11:04:16,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 24 transitions, 109 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-24 11:04:16,311 INFO L241 Difference]: Finished difference. Result has 38 places, 24 transitions, 113 flow [2021-03-24 11:04:16,311 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2021-03-24 11:04:16,311 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2021-03-24 11:04:16,312 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 113 flow [2021-03-24 11:04:16,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2021-03-24 11:04:16,312 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:04:16,312 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:04:16,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:04:16,312 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:04:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:04:16,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2012569027, now seen corresponding path program 1 times [2021-03-24 11:04:16,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:04:16,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859265365] [2021-03-24 11:04:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:04:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:04:16,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:04:16,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:04:16,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859265365] [2021-03-24 11:04:16,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:04:16,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:04:16,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588584977] [2021-03-24 11:04:16,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:04:16,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:04:16,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:04:16,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:04:16,371 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 113 [2021-03-24 11:04:16,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-24 11:04:16,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:04:16,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 113 [2021-03-24 11:04:16,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:04:16,387 INFO L129 PetriNetUnfolder]: 4/35 cut-off events. [2021-03-24 11:04:16,387 INFO L130 PetriNetUnfolder]: For 84/93 co-relation queries the response was YES. [2021-03-24 11:04:16,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 35 events. 4/35 cut-off events. For 84/93 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 2 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 84. Up to 12 conditions per place. [2021-03-24 11:04:16,387 INFO L132 encePairwiseOnDemand]: 108/113 looper letters, 1 selfloop transitions, 4 changer transitions 5/25 dead transitions. [2021-03-24 11:04:16,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 136 flow [2021-03-24 11:04:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:04:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:04:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2021-03-24 11:04:16,390 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8672566371681416 [2021-03-24 11:04:16,390 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2021-03-24 11:04:16,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2021-03-24 11:04:16,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:04:16,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2021-03-24 11:04:16,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2021-03-24 11:04:16,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:04:16,393 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:04:16,393 INFO L185 Difference]: Start difference. First operand has 38 places, 24 transitions, 113 flow. Second operand 4 states and 392 transitions. [2021-03-24 11:04:16,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 136 flow [2021-03-24 11:04:16,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 25 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:04:16,395 INFO L241 Difference]: Finished difference. Result has 41 places, 20 transitions, 100 flow [2021-03-24 11:04:16,395 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2021-03-24 11:04:16,395 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2021-03-24 11:04:16,395 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 100 flow [2021-03-24 11:04:16,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-03-24 11:04:16,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:04:16,396 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:04:16,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:04:16,396 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:04:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:04:16,396 INFO L82 PathProgramCache]: Analyzing trace with hash 534160610, now seen corresponding path program 1 times [2021-03-24 11:04:16,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:04:16,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865253228] [2021-03-24 11:04:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:04:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:04:16,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:04:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:04:16,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865253228] [2021-03-24 11:04:16,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:04:16,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:04:16,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489042763] [2021-03-24 11:04:16,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:04:16,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:04:16,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:04:16,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:04:16,442 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-24 11:04:16,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-24 11:04:16,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:04:16,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-24 11:04:16,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:04:16,464 INFO L129 PetriNetUnfolder]: 32/85 cut-off events. [2021-03-24 11:04:16,465 INFO L130 PetriNetUnfolder]: For 137/141 co-relation queries the response was YES. [2021-03-24 11:04:16,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 85 events. 32/85 cut-off events. For 137/141 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 294 event pairs, 15 based on Foata normal form. 8/84 useless extension candidates. Maximal degree in co-relation 212. Up to 48 conditions per place. [2021-03-24 11:04:16,465 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 4 changer transitions 7/30 dead transitions. [2021-03-24 11:04:16,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 30 transitions, 152 flow [2021-03-24 11:04:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:04:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:04:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2021-03-24 11:04:16,467 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8106194690265487 [2021-03-24 11:04:16,467 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2021-03-24 11:04:16,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2021-03-24 11:04:16,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:04:16,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2021-03-24 11:04:16,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 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) [2021-03-24 11:04:16,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 11:04:16,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 11:04:16,469 INFO L185 Difference]: Start difference. First operand has 41 places, 20 transitions, 100 flow. Second operand 5 states and 458 transitions. [2021-03-24 11:04:16,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 30 transitions, 152 flow [2021-03-24 11:04:16,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 128 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-24 11:04:16,470 INFO L241 Difference]: Finished difference. Result has 40 places, 23 transitions, 112 flow [2021-03-24 11:04:16,471 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2021-03-24 11:04:16,471 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-24 11:04:16,471 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 112 flow [2021-03-24 11:04:16,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-24 11:04:16,471 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:04:16,471 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:04:16,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:04:16,471 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:04:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:04:16,472 INFO L82 PathProgramCache]: Analyzing trace with hash -274601861, now seen corresponding path program 1 times [2021-03-24 11:04:16,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:04:16,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337858299] [2021-03-24 11:04:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:04:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:04:16,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:04:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:04:16,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337858299] [2021-03-24 11:04:16,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:04:16,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:04:16,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427915334] [2021-03-24 11:04:16,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:04:16,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:04:16,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:04:16,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:04:16,501 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-24 11:04:16,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 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) [2021-03-24 11:04:16,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:04:16,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-24 11:04:16,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:04:16,529 INFO L129 PetriNetUnfolder]: 18/59 cut-off events. [2021-03-24 11:04:16,529 INFO L130 PetriNetUnfolder]: For 70/113 co-relation queries the response was YES. [2021-03-24 11:04:16,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 59 events. 18/59 cut-off events. For 70/113 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 141 event pairs, 4 based on Foata normal form. 14/70 useless extension candidates. Maximal degree in co-relation 194. Up to 36 conditions per place. [2021-03-24 11:04:16,529 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 7 changer transitions 7/33 dead transitions. [2021-03-24 11:04:16,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 208 flow [2021-03-24 11:04:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 11:04:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 11:04:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2021-03-24 11:04:16,531 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8097345132743363 [2021-03-24 11:04:16,531 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2021-03-24 11:04:16,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2021-03-24 11:04:16,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:04:16,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2021-03-24 11:04:16,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2021-03-24 11:04:16,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2021-03-24 11:04:16,533 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2021-03-24 11:04:16,533 INFO L185 Difference]: Start difference. First operand has 40 places, 23 transitions, 112 flow. Second operand 6 states and 549 transitions. [2021-03-24 11:04:16,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 208 flow [2021-03-24 11:04:16,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 11:04:16,535 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 162 flow [2021-03-24 11:04:16,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2021-03-24 11:04:16,535 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2021-03-24 11:04:16,535 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 162 flow [2021-03-24 11:04:16,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 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) [2021-03-24 11:04:16,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:04:16,535 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:04:16,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:04:16,536 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:04:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:04:16,536 INFO L82 PathProgramCache]: Analyzing trace with hash 77113310, now seen corresponding path program 1 times [2021-03-24 11:04:16,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:04:16,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396850018] [2021-03-24 11:04:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:04:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:04:16,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:04:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:04:16,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396850018] [2021-03-24 11:04:16,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:04:16,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:04:16,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020354524] [2021-03-24 11:04:16,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:04:16,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:04:16,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:04:16,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:04:16,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-24 11:04:16,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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) [2021-03-24 11:04:16,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:04:16,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-24 11:04:16,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:04:16,606 INFO L129 PetriNetUnfolder]: 7/35 cut-off events. [2021-03-24 11:04:16,606 INFO L130 PetriNetUnfolder]: For 83/115 co-relation queries the response was YES. [2021-03-24 11:04:16,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 35 events. 7/35 cut-off events. For 83/115 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 14/48 useless extension candidates. Maximal degree in co-relation 135. Up to 20 conditions per place. [2021-03-24 11:04:16,607 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 2 selfloop transitions, 10 changer transitions 4/30 dead transitions. [2021-03-24 11:04:16,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 30 transitions, 230 flow [2021-03-24 11:04:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:04:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:04:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 634 transitions. [2021-03-24 11:04:16,613 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8015170670037927 [2021-03-24 11:04:16,613 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 634 transitions. [2021-03-24 11:04:16,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 634 transitions. [2021-03-24 11:04:16,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:04:16,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 634 transitions. [2021-03-24 11:04:16,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 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) [2021-03-24 11:04:16,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 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) [2021-03-24 11:04:16,626 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 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) [2021-03-24 11:04:16,626 INFO L185 Difference]: Start difference. First operand has 44 places, 26 transitions, 162 flow. Second operand 7 states and 634 transitions. [2021-03-24 11:04:16,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 30 transitions, 230 flow [2021-03-24 11:04:16,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 176 flow, removed 19 selfloop flow, removed 7 redundant places. [2021-03-24 11:04:16,629 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 146 flow [2021-03-24 11:04:16,629 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2021-03-24 11:04:16,629 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2021-03-24 11:04:16,629 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 146 flow [2021-03-24 11:04:16,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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) [2021-03-24 11:04:16,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:04:16,629 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] [2021-03-24 11:04:16,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:04:16,630 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:04:16,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:04:16,630 INFO L82 PathProgramCache]: Analyzing trace with hash 860862804, now seen corresponding path program 1 times [2021-03-24 11:04:16,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:04:16,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174471236] [2021-03-24 11:04:16,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:04:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:04:16,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:04:16,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:04:16,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:04:16,672 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:04:16,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:04:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:04:16,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174471236] [2021-03-24 11:04:16,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:04:16,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:04:16,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085016391] [2021-03-24 11:04:16,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:04:16,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:04:16,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:04:16,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:04:16,681 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 113 [2021-03-24 11:04:16,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:04:16,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:04:16,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 113 [2021-03-24 11:04:16,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:04:16,696 INFO L129 PetriNetUnfolder]: 5/28 cut-off events. [2021-03-24 11:04:16,696 INFO L130 PetriNetUnfolder]: For 43/49 co-relation queries the response was YES. [2021-03-24 11:04:16,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 28 events. 5/28 cut-off events. For 43/49 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 86. Up to 11 conditions per place. [2021-03-24 11:04:16,697 INFO L132 encePairwiseOnDemand]: 108/113 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2021-03-24 11:04:16,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 25 transitions, 156 flow [2021-03-24 11:04:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:04:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:04:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2021-03-24 11:04:16,698 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-03-24 11:04:16,698 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2021-03-24 11:04:16,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2021-03-24 11:04:16,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:04:16,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2021-03-24 11:04:16,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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) [2021-03-24 11:04:16,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 11:04:16,700 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 11:04:16,700 INFO L185 Difference]: Start difference. First operand has 44 places, 26 transitions, 146 flow. Second operand 5 states and 452 transitions. [2021-03-24 11:04:16,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 25 transitions, 156 flow [2021-03-24 11:04:16,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 25 transitions, 118 flow, removed 12 selfloop flow, removed 6 redundant places. [2021-03-24 11:04:16,701 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-24 11:04:16,701 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-24 11:04:16,701 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2021-03-24 11:04:16,701 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2021-03-24 11:04:16,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:04:16,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 11:04:16,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:04:16 BasicIcfg [2021-03-24 11:04:16,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:04:16,707 INFO L168 Benchmark]: Toolchain (without parser) took 2790.86 ms. Allocated memory was 255.9 MB in the beginning and 408.9 MB in the end (delta: 153.1 MB). Free memory was 234.9 MB in the beginning and 371.9 MB in the end (delta: -137.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.0 GB. [2021-03-24 11:04:16,708 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:04:16,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.73 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 234.9 MB in the beginning and 302.4 MB in the end (delta: -67.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.0 GB. [2021-03-24 11:04:16,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.50 ms. Allocated memory is still 339.7 MB. Free memory was 302.4 MB in the beginning and 300.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:04:16,708 INFO L168 Benchmark]: Boogie Preprocessor took 20.44 ms. Allocated memory is still 339.7 MB. Free memory was 300.3 MB in the beginning and 298.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:04:16,710 INFO L168 Benchmark]: RCFGBuilder took 264.41 ms. Allocated memory is still 339.7 MB. Free memory was 298.8 MB in the beginning and 276.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:04:16,711 INFO L168 Benchmark]: TraceAbstraction took 2022.79 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 276.5 MB in the beginning and 371.9 MB in the end (delta: -95.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:04:16,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 435.73 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 234.9 MB in the beginning and 302.4 MB in the end (delta: -67.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.50 ms. Allocated memory is still 339.7 MB. Free memory was 302.4 MB in the beginning and 300.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.44 ms. Allocated memory is still 339.7 MB. Free memory was 300.3 MB in the beginning and 298.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 264.41 ms. Allocated memory is still 339.7 MB. Free memory was 298.8 MB in the beginning and 276.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2022.79 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 276.5 MB in the beginning and 371.9 MB in the end (delta: -95.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1035.6ms, 68 PlacesBefore, 30 PlacesAfterwards, 59 TransitionsBefore, 20 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 39 TotalNumberOfCompositions, 984 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 517, positive: 485, positive conditional: 0, positive unconditional: 485, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 385, positive: 370, positive conditional: 0, positive unconditional: 370, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 385, positive: 370, positive conditional: 0, positive unconditional: 370, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 517, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 385, unknown conditional: 0, unknown unconditional: 385] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1937.5ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 285.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1113.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 25 SDslu, 21 SDs, 0 SdLazy, 117 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=7, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.4ms SsaConstructionTime, 133.2ms SatisfiabilityAnalysisTime, 251.3ms InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...