/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 23:41:59,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 23:41:59,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 23:41:59,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 23:41:59,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 23:41:59,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 23:41:59,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 23:41:59,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 23:41:59,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 23:41:59,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 23:41:59,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 23:41:59,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 23:41:59,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 23:41:59,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 23:41:59,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 23:41:59,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 23:41:59,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 23:41:59,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 23:41:59,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 23:41:59,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 23:41:59,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 23:41:59,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 23:41:59,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 23:41:59,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 23:41:59,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-28 23:41:59,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-28 23:41:59,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-28 23:41:59,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-28 23:41:59,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-28 23:41:59,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-28 23:41:59,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-28 23:41:59,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-28 23:41:59,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-28 23:41:59,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-28 23:41:59,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-28 23:41:59,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-28 23:41:59,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-28 23:41:59,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-28 23:41:59,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 23:41:59,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 23:41:59,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 23:41:59,394 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 23:41:59,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 23:41:59,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 23:41:59,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 23:41:59,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 23:41:59,463 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 23:41:59,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 23:41:59,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 23:41:59,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 23:41:59,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 23:41:59,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 23:41:59,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 23:41:59,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 23:41:59,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 23:41:59,467 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 23:41:59,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 23:41:59,468 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 23:41:59,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 23:41:59,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 23:41:59,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 23:41:59,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 23:41:59,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 23:41:59,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 23:41:59,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 23:41:59,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 23:41:59,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 23:41:59,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 23:41:59,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 23:41:59,472 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 23:41:59,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 23:41:59,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 23:41:59,473 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 23:41:59,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 23:41:59,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 23:41:59,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 23:41:59,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 23:41:59,963 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 23:41:59,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2021-04-28 23:42:00,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03136d4d8/3bdb7b6f64a649a0a06ea93e3518b781/FLAG0b4cca161 [2021-04-28 23:42:00,854 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 23:42:00,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2021-04-28 23:42:00,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03136d4d8/3bdb7b6f64a649a0a06ea93e3518b781/FLAG0b4cca161 [2021-04-28 23:42:01,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03136d4d8/3bdb7b6f64a649a0a06ea93e3518b781 [2021-04-28 23:42:01,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 23:42:01,164 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 23:42:01,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 23:42:01,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 23:42:01,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 23:42:01,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:42:01" (1/1) ... [2021-04-28 23:42:01,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118d757a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:01, skipping insertion in model container [2021-04-28 23:42:01,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:42:01" (1/1) ... [2021-04-28 23:42:01,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 23:42:01,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 23:42:01,513 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/safe009_tso.opt.i[949,962] [2021-04-28 23:42:01,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:42:01,798 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 23:42:01,817 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/safe009_tso.opt.i[949,962] [2021-04-28 23:42:01,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:42:02,044 INFO L208 MainTranslator]: Completed translation [2021-04-28 23:42:02,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02 WrapperNode [2021-04-28 23:42:02,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 23:42:02,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 23:42:02,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 23:42:02,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 23:42:02,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (1/1) ... [2021-04-28 23:42:02,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (1/1) ... [2021-04-28 23:42:02,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 23:42:02,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 23:42:02,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 23:42:02,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 23:42:02,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (1/1) ... [2021-04-28 23:42:02,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (1/1) ... [2021-04-28 23:42:02,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (1/1) ... [2021-04-28 23:42:02,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (1/1) ... [2021-04-28 23:42:02,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (1/1) ... [2021-04-28 23:42:02,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (1/1) ... [2021-04-28 23:42:02,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (1/1) ... [2021-04-28 23:42:02,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 23:42:02,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 23:42:02,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 23:42:02,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 23:42:02,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (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 [2021-04-28 23:42:02,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 23:42:02,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 23:42:02,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 23:42:02,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 23:42:02,332 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-28 23:42:02,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-28 23:42:02,332 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-28 23:42:02,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-28 23:42:02,332 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-28 23:42:02,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-28 23:42:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 23:42:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 23:42:02,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 23:42:02,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 23:42:02,335 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 23:42:02,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 23:42:02,846 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-28 23:42:02,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:42:02 BoogieIcfgContainer [2021-04-28 23:42:02,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 23:42:02,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 23:42:02,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 23:42:02,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 23:42:02,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:42:01" (1/3) ... [2021-04-28 23:42:02,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f53e52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:42:02, skipping insertion in model container [2021-04-28 23:42:02,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:42:02" (2/3) ... [2021-04-28 23:42:02,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f53e52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:42:02, skipping insertion in model container [2021-04-28 23:42:02,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:42:02" (3/3) ... [2021-04-28 23:42:02,859 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2021-04-28 23:42:02,867 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 23:42:02,872 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-28 23:42:02,873 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 23:42:02,910 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,910 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,911 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,911 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,911 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,911 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,911 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,912 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,912 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,912 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,913 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,913 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,914 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,914 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,914 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,914 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,916 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,916 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,916 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,917 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,917 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,917 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,917 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,917 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,919 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,922 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,922 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,929 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,930 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,930 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,930 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:42:02,943 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 23:42:02,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-28 23:42:02,998 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 23:42:02,998 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 23:42:02,999 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 23:42:02,999 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 23:42:02,999 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 23:42:02,999 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 23:42:02,999 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 23:42:02,999 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 23:42:03,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-04-28 23:42:03,064 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-04-28 23:42:03,064 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:42:03,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-04-28 23:42:03,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-04-28 23:42:03,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-04-28 23:42:03,078 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:03,098 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-04-28 23:42:03,103 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-04-28 23:42:03,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-04-28 23:42:03,138 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-04-28 23:42:03,138 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:42:03,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 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. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-04-28 23:42:03,144 INFO L146 LiptonReduction]: Number of co-enabled transitions 812 [2021-04-28 23:42:08,029 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:42:08,197 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-28 23:42:08,358 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:42:08,511 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-28 23:42:09,238 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:42:09,407 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-28 23:42:09,777 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:42:09,985 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:42:10,192 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:42:10,397 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:42:10,612 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:42:10,830 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:42:11,041 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:42:11,263 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:42:11,513 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:42:11,759 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-04-28 23:42:11,979 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:42:12,169 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:42:12,491 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-04-28 23:42:12,775 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-04-28 23:42:13,685 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-04-28 23:42:13,788 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-04-28 23:42:14,014 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-04-28 23:42:14,158 INFO L158 LiptonReduction]: Checked pairs total: 6023 [2021-04-28 23:42:14,159 INFO L160 LiptonReduction]: Total number of compositions: 91 [2021-04-28 23:42:14,171 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11094 [2021-04-28 23:42:14,201 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-04-28 23:42:14,201 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:42:14,201 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:14,202 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:14,203 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:14,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:14,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1671274434, now seen corresponding path program 1 times [2021-04-28 23:42:14,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:14,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104822148] [2021-04-28 23:42:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:14,533 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-28 23:42:14,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:14,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104822148] [2021-04-28 23:42:14,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:14,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:42:14,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271930076] [2021-04-28 23:42:14,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:42:14,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:14,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:42:14,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:42:14,599 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 164 [2021-04-28 23:42:14,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2021-04-28 23:42:14,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:14,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 164 [2021-04-28 23:42:14,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:14,822 INFO L129 PetriNetUnfolder]: 148/520 cut-off events. [2021-04-28 23:42:14,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:42:14,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 520 events. 148/520 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 4303 event pairs, 65 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 765. Up to 209 conditions per place. [2021-04-28 23:42:14,829 INFO L132 encePairwiseOnDemand]: 146/164 looper letters, 4 selfloop transitions, 5 changer transitions 35/76 dead transitions. [2021-04-28 23:42:14,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 223 flow [2021-04-28 23:42:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:42:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:42:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2021-04-28 23:42:14,851 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.725609756097561 [2021-04-28 23:42:14,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2021-04-28 23:42:14,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2021-04-28 23:42:14,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:14,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2021-04-28 23:42:14,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2021-04-28 23:42:14,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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) [2021-04-28 23:42:14,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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) [2021-04-28 23:42:14,878 INFO L185 Difference]: Start difference. First operand has 78 places, 68 transitions, 145 flow. Second operand 3 states and 357 transitions. [2021-04-28 23:42:14,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 223 flow [2021-04-28 23:42:14,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-28 23:42:14,887 INFO L241 Difference]: Finished difference. Result has 78 places, 41 transitions, 111 flow [2021-04-28 23:42:14,890 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=78, PETRI_TRANSITIONS=41} [2021-04-28 23:42:14,891 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2021-04-28 23:42:14,892 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:14,892 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 41 transitions, 111 flow [2021-04-28 23:42:14,893 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 41 transitions, 111 flow [2021-04-28 23:42:14,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 41 transitions, 111 flow [2021-04-28 23:42:14,911 INFO L129 PetriNetUnfolder]: 23/137 cut-off events. [2021-04-28 23:42:14,911 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-04-28 23:42:14,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 137 events. 23/137 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 766 event pairs, 11 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 201. Up to 44 conditions per place. [2021-04-28 23:42:14,916 INFO L146 LiptonReduction]: Number of co-enabled transitions 862 [2021-04-28 23:42:14,934 INFO L158 LiptonReduction]: Checked pairs total: 206 [2021-04-28 23:42:14,934 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:42:14,934 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-04-28 23:42:14,937 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 111 flow [2021-04-28 23:42:14,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2021-04-28 23:42:14,938 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:14,938 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:14,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 23:42:14,939 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:14,939 INFO L82 PathProgramCache]: Analyzing trace with hash -269901517, now seen corresponding path program 1 times [2021-04-28 23:42:14,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:14,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585484931] [2021-04-28 23:42:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:15,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:15,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:15,034 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-28 23:42:15,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:15,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585484931] [2021-04-28 23:42:15,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:15,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:42:15,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058619142] [2021-04-28 23:42:15,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:42:15,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:15,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:42:15,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:42:15,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 164 [2021-04-28 23:42:15,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 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) [2021-04-28 23:42:15,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:15,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 164 [2021-04-28 23:42:15,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:15,109 INFO L129 PetriNetUnfolder]: 15/105 cut-off events. [2021-04-28 23:42:15,109 INFO L130 PetriNetUnfolder]: For 14/43 co-relation queries the response was YES. [2021-04-28 23:42:15,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 105 events. 15/105 cut-off events. For 14/43 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 525 event pairs, 0 based on Foata normal form. 2/64 useless extension candidates. Maximal degree in co-relation 191. Up to 33 conditions per place. [2021-04-28 23:42:15,111 INFO L132 encePairwiseOnDemand]: 159/164 looper letters, 8 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2021-04-28 23:42:15,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 168 flow [2021-04-28 23:42:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:42:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:42:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2021-04-28 23:42:15,120 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6783536585365854 [2021-04-28 23:42:15,120 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2021-04-28 23:42:15,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2021-04-28 23:42:15,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:15,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2021-04-28 23:42:15,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2021-04-28 23:42:15,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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) [2021-04-28 23:42:15,129 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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) [2021-04-28 23:42:15,130 INFO L185 Difference]: Start difference. First operand has 48 places, 41 transitions, 111 flow. Second operand 4 states and 445 transitions. [2021-04-28 23:42:15,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 168 flow [2021-04-28 23:42:15,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:42:15,133 INFO L241 Difference]: Finished difference. Result has 52 places, 45 transitions, 150 flow [2021-04-28 23:42:15,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2021-04-28 23:42:15,134 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -26 predicate places. [2021-04-28 23:42:15,134 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:15,134 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 45 transitions, 150 flow [2021-04-28 23:42:15,137 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 45 transitions, 150 flow [2021-04-28 23:42:15,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 45 transitions, 150 flow [2021-04-28 23:42:15,154 INFO L129 PetriNetUnfolder]: 15/119 cut-off events. [2021-04-28 23:42:15,154 INFO L130 PetriNetUnfolder]: For 24/27 co-relation queries the response was YES. [2021-04-28 23:42:15,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 119 events. 15/119 cut-off events. For 24/27 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 646 event pairs, 3 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 195. Up to 33 conditions per place. [2021-04-28 23:42:15,161 INFO L146 LiptonReduction]: Number of co-enabled transitions 988 [2021-04-28 23:42:15,170 INFO L158 LiptonReduction]: Checked pairs total: 222 [2021-04-28 23:42:15,171 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:42:15,171 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-04-28 23:42:15,174 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 150 flow [2021-04-28 23:42:15,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 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) [2021-04-28 23:42:15,175 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:15,175 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:15,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 23:42:15,176 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:15,180 INFO L82 PathProgramCache]: Analyzing trace with hash -269901424, now seen corresponding path program 1 times [2021-04-28 23:42:15,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:15,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714606692] [2021-04-28 23:42:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:15,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:15,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:15,351 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-28 23:42:15,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:15,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714606692] [2021-04-28 23:42:15,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:15,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:42:15,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691457071] [2021-04-28 23:42:15,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:42:15,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:42:15,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:42:15,371 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 164 [2021-04-28 23:42:15,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 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) [2021-04-28 23:42:15,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:15,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 164 [2021-04-28 23:42:15,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:15,414 INFO L129 PetriNetUnfolder]: 10/90 cut-off events. [2021-04-28 23:42:15,415 INFO L130 PetriNetUnfolder]: For 32/67 co-relation queries the response was YES. [2021-04-28 23:42:15,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 90 events. 10/90 cut-off events. For 32/67 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 447 event pairs, 2 based on Foata normal form. 9/61 useless extension candidates. Maximal degree in co-relation 180. Up to 25 conditions per place. [2021-04-28 23:42:15,417 INFO L132 encePairwiseOnDemand]: 159/164 looper letters, 11 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2021-04-28 23:42:15,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 219 flow [2021-04-28 23:42:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:42:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:42:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2021-04-28 23:42:15,422 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6753048780487805 [2021-04-28 23:42:15,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2021-04-28 23:42:15,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2021-04-28 23:42:15,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:15,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2021-04-28 23:42:15,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 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) [2021-04-28 23:42:15,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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) [2021-04-28 23:42:15,428 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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) [2021-04-28 23:42:15,428 INFO L185 Difference]: Start difference. First operand has 52 places, 45 transitions, 150 flow. Second operand 4 states and 443 transitions. [2021-04-28 23:42:15,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 219 flow [2021-04-28 23:42:15,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 219 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-28 23:42:15,434 INFO L241 Difference]: Finished difference. Result has 58 places, 48 transitions, 208 flow [2021-04-28 23:42:15,434 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2021-04-28 23:42:15,435 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -20 predicate places. [2021-04-28 23:42:15,435 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:15,436 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 48 transitions, 208 flow [2021-04-28 23:42:15,438 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 48 transitions, 208 flow [2021-04-28 23:42:15,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 48 transitions, 208 flow [2021-04-28 23:42:15,453 INFO L129 PetriNetUnfolder]: 10/92 cut-off events. [2021-04-28 23:42:15,453 INFO L130 PetriNetUnfolder]: For 59/72 co-relation queries the response was YES. [2021-04-28 23:42:15,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 92 events. 10/92 cut-off events. For 59/72 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 496 event pairs, 2 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 182. Up to 25 conditions per place. [2021-04-28 23:42:15,457 INFO L146 LiptonReduction]: Number of co-enabled transitions 1080 [2021-04-28 23:42:15,467 INFO L158 LiptonReduction]: Checked pairs total: 225 [2021-04-28 23:42:15,468 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:42:15,468 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-04-28 23:42:15,473 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 208 flow [2021-04-28 23:42:15,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 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) [2021-04-28 23:42:15,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:15,474 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:15,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 23:42:15,474 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:15,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:15,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2125004127, now seen corresponding path program 1 times [2021-04-28 23:42:15,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:15,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555175174] [2021-04-28 23:42:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:15,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:15,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:15,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:15,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:15,601 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-28 23:42:15,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:15,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555175174] [2021-04-28 23:42:15,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:15,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:42:15,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285136840] [2021-04-28 23:42:15,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:42:15,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:15,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:42:15,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:42:15,618 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 164 [2021-04-28 23:42:15,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:42:15,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:15,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 164 [2021-04-28 23:42:15,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:15,672 INFO L129 PetriNetUnfolder]: 8/112 cut-off events. [2021-04-28 23:42:15,673 INFO L130 PetriNetUnfolder]: For 86/121 co-relation queries the response was YES. [2021-04-28 23:42:15,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 112 events. 8/112 cut-off events. For 86/121 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 631 event pairs, 1 based on Foata normal form. 5/66 useless extension candidates. Maximal degree in co-relation 238. Up to 26 conditions per place. [2021-04-28 23:42:15,675 INFO L132 encePairwiseOnDemand]: 159/164 looper letters, 7 selfloop transitions, 7 changer transitions 8/52 dead transitions. [2021-04-28 23:42:15,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 52 transitions, 275 flow [2021-04-28 23:42:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:42:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:42:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2021-04-28 23:42:15,678 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.675609756097561 [2021-04-28 23:42:15,678 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2021-04-28 23:42:15,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2021-04-28 23:42:15,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:15,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2021-04-28 23:42:15,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2021-04-28 23:42:15,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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) [2021-04-28 23:42:15,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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) [2021-04-28 23:42:15,685 INFO L185 Difference]: Start difference. First operand has 58 places, 48 transitions, 208 flow. Second operand 5 states and 554 transitions. [2021-04-28 23:42:15,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 52 transitions, 275 flow [2021-04-28 23:42:15,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:42:15,690 INFO L241 Difference]: Finished difference. Result has 62 places, 43 transitions, 189 flow [2021-04-28 23:42:15,690 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2021-04-28 23:42:15,691 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -16 predicate places. [2021-04-28 23:42:15,691 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:15,691 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 43 transitions, 189 flow [2021-04-28 23:42:15,692 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 43 transitions, 189 flow [2021-04-28 23:42:15,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 43 transitions, 189 flow [2021-04-28 23:42:15,704 INFO L129 PetriNetUnfolder]: 6/80 cut-off events. [2021-04-28 23:42:15,704 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2021-04-28 23:42:15,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 80 events. 6/80 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 413 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 165. Up to 19 conditions per place. [2021-04-28 23:42:15,707 INFO L146 LiptonReduction]: Number of co-enabled transitions 866 [2021-04-28 23:42:15,714 INFO L158 LiptonReduction]: Checked pairs total: 180 [2021-04-28 23:42:15,714 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:42:15,714 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-04-28 23:42:15,716 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 189 flow [2021-04-28 23:42:15,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:42:15,717 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:15,717 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:15,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 23:42:15,718 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:15,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:15,718 INFO L82 PathProgramCache]: Analyzing trace with hash 222123003, now seen corresponding path program 2 times [2021-04-28 23:42:15,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:15,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553734680] [2021-04-28 23:42:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:15,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:15,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:15,773 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-28 23:42:15,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:15,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553734680] [2021-04-28 23:42:15,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:15,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:42:15,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874750948] [2021-04-28 23:42:15,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:42:15,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:15,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:42:15,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:42:15,796 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 164 [2021-04-28 23:42:15,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-04-28 23:42:15,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:15,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 164 [2021-04-28 23:42:15,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:15,834 INFO L129 PetriNetUnfolder]: 5/78 cut-off events. [2021-04-28 23:42:15,835 INFO L130 PetriNetUnfolder]: For 67/69 co-relation queries the response was YES. [2021-04-28 23:42:15,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 78 events. 5/78 cut-off events. For 67/69 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 377 event pairs, 0 based on Foata normal form. 3/48 useless extension candidates. Maximal degree in co-relation 178. Up to 17 conditions per place. [2021-04-28 23:42:15,836 INFO L132 encePairwiseOnDemand]: 158/164 looper letters, 6 selfloop transitions, 8 changer transitions 1/44 dead transitions. [2021-04-28 23:42:15,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 44 transitions, 227 flow [2021-04-28 23:42:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:42:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:42:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2021-04-28 23:42:15,839 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6753048780487805 [2021-04-28 23:42:15,839 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2021-04-28 23:42:15,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2021-04-28 23:42:15,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:15,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2021-04-28 23:42:15,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 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) [2021-04-28 23:42:15,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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) [2021-04-28 23:42:15,845 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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) [2021-04-28 23:42:15,845 INFO L185 Difference]: Start difference. First operand has 60 places, 43 transitions, 189 flow. Second operand 4 states and 443 transitions. [2021-04-28 23:42:15,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 44 transitions, 227 flow [2021-04-28 23:42:15,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 44 transitions, 200 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-04-28 23:42:15,849 INFO L241 Difference]: Finished difference. Result has 59 places, 42 transitions, 183 flow [2021-04-28 23:42:15,850 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2021-04-28 23:42:15,850 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -19 predicate places. [2021-04-28 23:42:15,850 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:15,850 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 42 transitions, 183 flow [2021-04-28 23:42:15,851 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 42 transitions, 183 flow [2021-04-28 23:42:15,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 42 transitions, 183 flow [2021-04-28 23:42:15,862 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-04-28 23:42:15,862 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-04-28 23:42:15,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 77 events. 5/77 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 387 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 155. Up to 17 conditions per place. [2021-04-28 23:42:15,865 INFO L146 LiptonReduction]: Number of co-enabled transitions 814 [2021-04-28 23:42:15,877 INFO L158 LiptonReduction]: Checked pairs total: 173 [2021-04-28 23:42:15,878 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:42:15,878 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-04-28 23:42:15,880 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 183 flow [2021-04-28 23:42:15,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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) [2021-04-28 23:42:15,880 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:15,880 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:15,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 23:42:15,881 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:15,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:15,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1617765513, now seen corresponding path program 1 times [2021-04-28 23:42:15,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:15,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274282483] [2021-04-28 23:42:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:15,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:15,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:42:15,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:15,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:15,931 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-28 23:42:15,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:15,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274282483] [2021-04-28 23:42:15,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:15,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:42:15,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27538839] [2021-04-28 23:42:15,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:42:15,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:15,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:42:15,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:42:15,946 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 164 [2021-04-28 23:42:15,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2021-04-28 23:42:15,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:15,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 164 [2021-04-28 23:42:15,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:15,981 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2021-04-28 23:42:15,981 INFO L130 PetriNetUnfolder]: For 43/45 co-relation queries the response was YES. [2021-04-28 23:42:15,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 79 events. 3/79 cut-off events. For 43/45 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 389 event pairs, 0 based on Foata normal form. 4/48 useless extension candidates. Maximal degree in co-relation 169. Up to 15 conditions per place. [2021-04-28 23:42:15,983 INFO L132 encePairwiseOnDemand]: 159/164 looper letters, 5 selfloop transitions, 7 changer transitions 2/42 dead transitions. [2021-04-28 23:42:15,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 42 transitions, 209 flow [2021-04-28 23:42:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:42:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:42:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2021-04-28 23:42:15,986 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6753048780487805 [2021-04-28 23:42:15,986 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2021-04-28 23:42:15,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2021-04-28 23:42:15,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:15,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2021-04-28 23:42:15,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 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) [2021-04-28 23:42:15,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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) [2021-04-28 23:42:15,991 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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) [2021-04-28 23:42:15,991 INFO L185 Difference]: Start difference. First operand has 58 places, 42 transitions, 183 flow. Second operand 4 states and 443 transitions. [2021-04-28 23:42:15,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 42 transitions, 209 flow [2021-04-28 23:42:15,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 42 transitions, 193 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-28 23:42:15,994 INFO L241 Difference]: Finished difference. Result has 59 places, 40 transitions, 177 flow [2021-04-28 23:42:15,994 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2021-04-28 23:42:15,995 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -19 predicate places. [2021-04-28 23:42:15,995 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:15,995 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 40 transitions, 177 flow [2021-04-28 23:42:15,995 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 40 transitions, 177 flow [2021-04-28 23:42:15,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 40 transitions, 177 flow [2021-04-28 23:42:16,005 INFO L129 PetriNetUnfolder]: 3/68 cut-off events. [2021-04-28 23:42:16,006 INFO L130 PetriNetUnfolder]: For 39/42 co-relation queries the response was YES. [2021-04-28 23:42:16,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 68 events. 3/68 cut-off events. For 39/42 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 328 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 134. Up to 14 conditions per place. [2021-04-28 23:42:16,008 INFO L146 LiptonReduction]: Number of co-enabled transitions 728 [2021-04-28 23:42:16,015 INFO L158 LiptonReduction]: Checked pairs total: 165 [2021-04-28 23:42:16,015 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:42:16,015 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-04-28 23:42:16,017 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 177 flow [2021-04-28 23:42:16,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2021-04-28 23:42:16,018 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:16,018 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:16,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-28 23:42:16,018 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:16,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:16,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1256547795, now seen corresponding path program 1 times [2021-04-28 23:42:16,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:16,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114793671] [2021-04-28 23:42:16,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:16,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:16,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:16,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:16,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:16,070 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-28 23:42:16,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:16,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114793671] [2021-04-28 23:42:16,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:16,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:42:16,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391901062] [2021-04-28 23:42:16,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:42:16,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:16,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:42:16,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:42:16,120 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 164 [2021-04-28 23:42:16,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2021-04-28 23:42:16,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:16,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 164 [2021-04-28 23:42:16,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:16,157 INFO L129 PetriNetUnfolder]: 5/82 cut-off events. [2021-04-28 23:42:16,157 INFO L130 PetriNetUnfolder]: For 107/109 co-relation queries the response was YES. [2021-04-28 23:42:16,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 82 events. 5/82 cut-off events. For 107/109 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 387 event pairs, 0 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 185. Up to 15 conditions per place. [2021-04-28 23:42:16,158 INFO L132 encePairwiseOnDemand]: 159/164 looper letters, 3 selfloop transitions, 4 changer transitions 22/44 dead transitions. [2021-04-28 23:42:16,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 44 transitions, 251 flow [2021-04-28 23:42:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:42:16,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:42:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2021-04-28 23:42:16,161 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6560975609756098 [2021-04-28 23:42:16,161 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2021-04-28 23:42:16,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2021-04-28 23:42:16,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:16,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2021-04-28 23:42:16,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 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) [2021-04-28 23:42:16,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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) [2021-04-28 23:42:16,167 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 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) [2021-04-28 23:42:16,167 INFO L185 Difference]: Start difference. First operand has 58 places, 40 transitions, 177 flow. Second operand 5 states and 538 transitions. [2021-04-28 23:42:16,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 44 transitions, 251 flow [2021-04-28 23:42:16,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 44 transitions, 214 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-04-28 23:42:16,170 INFO L241 Difference]: Finished difference. Result has 60 places, 22 transitions, 103 flow [2021-04-28 23:42:16,170 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=60, PETRI_TRANSITIONS=22} [2021-04-28 23:42:16,171 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -18 predicate places. [2021-04-28 23:42:16,171 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:16,171 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 22 transitions, 103 flow [2021-04-28 23:42:16,171 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 22 transitions, 103 flow [2021-04-28 23:42:16,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 22 transitions, 103 flow [2021-04-28 23:42:16,176 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-04-28 23:42:16,176 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-04-28 23:42:16,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 26 events. 0/26 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-04-28 23:42:16,177 INFO L146 LiptonReduction]: Number of co-enabled transitions 130 [2021-04-28 23:42:16,267 INFO L158 LiptonReduction]: Checked pairs total: 49 [2021-04-28 23:42:16,267 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-28 23:42:16,268 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-04-28 23:42:16,269 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 22 transitions, 130 flow [2021-04-28 23:42:16,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2021-04-28 23:42:16,270 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:16,270 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:16,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-28 23:42:16,271 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:16,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1290081633, now seen corresponding path program 1 times [2021-04-28 23:42:16,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:16,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494498715] [2021-04-28 23:42:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:16,321 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-28 23:42:16,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-28 23:42:16,331 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 23:42:16,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:16,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494498715] [2021-04-28 23:42:16,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:16,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:42:16,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103348072] [2021-04-28 23:42:16,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:42:16,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:16,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:42:16,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:42:16,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 167 [2021-04-28 23:42:16,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 22 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:42:16,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:16,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 167 [2021-04-28 23:42:16,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:16,510 INFO L129 PetriNetUnfolder]: 369/645 cut-off events. [2021-04-28 23:42:16,510 INFO L130 PetriNetUnfolder]: For 1358/1464 co-relation queries the response was YES. [2021-04-28 23:42:16,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 645 events. 369/645 cut-off events. For 1358/1464 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 3661 event pairs, 171 based on Foata normal form. 15/281 useless extension candidates. Maximal degree in co-relation 2393. Up to 475 conditions per place. [2021-04-28 23:42:16,515 INFO L132 encePairwiseOnDemand]: 155/167 looper letters, 11 selfloop transitions, 7 changer transitions 22/50 dead transitions. [2021-04-28 23:42:16,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 347 flow [2021-04-28 23:42:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:42:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:42:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2021-04-28 23:42:16,519 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6730538922155689 [2021-04-28 23:42:16,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2021-04-28 23:42:16,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2021-04-28 23:42:16,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:16,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2021-04-28 23:42:16,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:42:16,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-04-28 23:42:16,525 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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) [2021-04-28 23:42:16,525 INFO L185 Difference]: Start difference. First operand has 48 places, 22 transitions, 130 flow. Second operand 5 states and 562 transitions. [2021-04-28 23:42:16,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 347 flow [2021-04-28 23:42:16,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 272 flow, removed 7 selfloop flow, removed 12 redundant places. [2021-04-28 23:42:16,531 INFO L241 Difference]: Finished difference. Result has 43 places, 28 transitions, 157 flow [2021-04-28 23:42:16,532 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2021-04-28 23:42:16,532 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -35 predicate places. [2021-04-28 23:42:16,532 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:16,532 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 28 transitions, 157 flow [2021-04-28 23:42:16,533 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 28 transitions, 157 flow [2021-04-28 23:42:16,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 28 transitions, 157 flow [2021-04-28 23:42:16,579 INFO L129 PetriNetUnfolder]: 252/458 cut-off events. [2021-04-28 23:42:16,579 INFO L130 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2021-04-28 23:42:16,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 458 events. 252/458 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 2496 event pairs, 144 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 2052. Up to 418 conditions per place. [2021-04-28 23:42:16,586 INFO L146 LiptonReduction]: Number of co-enabled transitions 68 [2021-04-28 23:42:16,625 INFO L158 LiptonReduction]: Checked pairs total: 4 [2021-04-28 23:42:16,626 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-28 23:42:16,626 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-04-28 23:42:16,627 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 157 flow [2021-04-28 23:42:16,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:42:16,628 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:16,628 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:16,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-28 23:42:16,629 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:16,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:16,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1566145604, now seen corresponding path program 1 times [2021-04-28 23:42:16,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:16,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130358033] [2021-04-28 23:42:16,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:16,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:16,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:16,687 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-28 23:42:16,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-28 23:42:16,704 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 23:42:16,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:16,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130358033] [2021-04-28 23:42:16,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:16,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:42:16,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245269296] [2021-04-28 23:42:16,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:42:16,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:16,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:42:16,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:42:16,723 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 168 [2021-04-28 23:42:16,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 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) [2021-04-28 23:42:16,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:16,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 168 [2021-04-28 23:42:16,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:16,864 INFO L129 PetriNetUnfolder]: 207/437 cut-off events. [2021-04-28 23:42:16,865 INFO L130 PetriNetUnfolder]: For 287/323 co-relation queries the response was YES. [2021-04-28 23:42:16,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2434 conditions, 437 events. 207/437 cut-off events. For 287/323 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 2552 event pairs, 27 based on Foata normal form. 16/215 useless extension candidates. Maximal degree in co-relation 2421. Up to 409 conditions per place. [2021-04-28 23:42:16,868 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 5 selfloop transitions, 13 changer transitions 29/56 dead transitions. [2021-04-28 23:42:16,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 469 flow [2021-04-28 23:42:16,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-28 23:42:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-28 23:42:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 678 transitions. [2021-04-28 23:42:16,872 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6726190476190477 [2021-04-28 23:42:16,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 678 transitions. [2021-04-28 23:42:16,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 678 transitions. [2021-04-28 23:42:16,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:16,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 678 transitions. [2021-04-28 23:42:16,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2021-04-28 23:42:16,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 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) [2021-04-28 23:42:16,878 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 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) [2021-04-28 23:42:16,879 INFO L185 Difference]: Start difference. First operand has 41 places, 28 transitions, 157 flow. Second operand 6 states and 678 transitions. [2021-04-28 23:42:16,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 469 flow [2021-04-28 23:42:16,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 460 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-28 23:42:16,884 INFO L241 Difference]: Finished difference. Result has 47 places, 27 transitions, 202 flow [2021-04-28 23:42:16,884 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2021-04-28 23:42:16,885 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -31 predicate places. [2021-04-28 23:42:16,885 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:16,885 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 27 transitions, 202 flow [2021-04-28 23:42:16,886 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 27 transitions, 202 flow [2021-04-28 23:42:16,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 27 transitions, 202 flow [2021-04-28 23:42:16,907 INFO L129 PetriNetUnfolder]: 36/169 cut-off events. [2021-04-28 23:42:16,907 INFO L130 PetriNetUnfolder]: For 225/228 co-relation queries the response was YES. [2021-04-28 23:42:16,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 169 events. 36/169 cut-off events. For 225/228 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1139 event pairs, 27 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 1154. Up to 142 conditions per place. [2021-04-28 23:42:16,910 INFO L146 LiptonReduction]: Number of co-enabled transitions 58 [2021-04-28 23:42:16,913 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:42:16,914 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:42:16,914 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-04-28 23:42:16,915 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 202 flow [2021-04-28 23:42:16,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 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) [2021-04-28 23:42:16,916 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:42:16,916 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:42:16,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-28 23:42:16,916 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:42:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:42:16,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1099542381, now seen corresponding path program 1 times [2021-04-28 23:42:16,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:42:16,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436184468] [2021-04-28 23:42:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:42:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:42:16,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:16,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:16,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:42:16,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:42:16,966 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-04-28 23:42:16,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-28 23:42:16,973 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-28 23:42:16,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-28 23:42:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:42:16,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436184468] [2021-04-28 23:42:16,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:42:16,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-28 23:42:16,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720333695] [2021-04-28 23:42:16,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-28 23:42:16,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:42:16,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-28 23:42:16,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-28 23:42:16,988 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 168 [2021-04-28 23:42:16,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 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) [2021-04-28 23:42:16,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:42:16,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 168 [2021-04-28 23:42:16,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:42:17,090 INFO L129 PetriNetUnfolder]: 9/124 cut-off events. [2021-04-28 23:42:17,091 INFO L130 PetriNetUnfolder]: For 235/247 co-relation queries the response was YES. [2021-04-28 23:42:17,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 124 events. 9/124 cut-off events. For 235/247 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 932 event pairs, 0 based on Foata normal form. 11/83 useless extension candidates. Maximal degree in co-relation 896. Up to 115 conditions per place. [2021-04-28 23:42:17,092 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2021-04-28 23:42:17,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 30 transitions, 286 flow [2021-04-28 23:42:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-28 23:42:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-28 23:42:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 757 transitions. [2021-04-28 23:42:17,096 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6437074829931972 [2021-04-28 23:42:17,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 757 transitions. [2021-04-28 23:42:17,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 757 transitions. [2021-04-28 23:42:17,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:42:17,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 757 transitions. [2021-04-28 23:42:17,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.14285714285714) internal successors, (757), 7 states have internal predecessors, (757), 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) [2021-04-28 23:42:17,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 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) [2021-04-28 23:42:17,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 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) [2021-04-28 23:42:17,103 INFO L185 Difference]: Start difference. First operand has 44 places, 27 transitions, 202 flow. Second operand 7 states and 757 transitions. [2021-04-28 23:42:17,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 30 transitions, 286 flow [2021-04-28 23:42:17,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 30 transitions, 213 flow, removed 24 selfloop flow, removed 6 redundant places. [2021-04-28 23:42:17,106 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-04-28 23:42:17,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-04-28 23:42:17,106 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -35 predicate places. [2021-04-28 23:42:17,107 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:42:17,107 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 0 transitions, 0 flow [2021-04-28 23:42:17,107 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 0 transitions, 0 flow [2021-04-28 23:42:17,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-28 23:42:17,108 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-28 23:42:17,108 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:42:17,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-28 23:42:17,108 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 23:42:17,108 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:42:17,108 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:42:17,108 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-04-28 23:42:17,109 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-28 23:42:17,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 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) [2021-04-28 23:42:17,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-28 23:42:17,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 11:42:17 BasicIcfg [2021-04-28 23:42:17,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 23:42:17,117 INFO L168 Benchmark]: Toolchain (without parser) took 15996.27 ms. Allocated memory was 302.0 MB in the beginning and 446.7 MB in the end (delta: 144.7 MB). Free memory was 277.2 MB in the beginning and 256.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 167.1 MB. Max. memory is 16.0 GB. [2021-04-28 23:42:17,118 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 302.0 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:42:17,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 878.54 ms. Allocated memory is still 302.0 MB. Free memory was 274.1 MB in the beginning and 280.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. [2021-04-28 23:42:17,119 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.02 ms. Allocated memory is still 302.0 MB. Free memory was 280.3 MB in the beginning and 278.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:42:17,119 INFO L168 Benchmark]: Boogie Preprocessor took 55.62 ms. Allocated memory is still 302.0 MB. Free memory was 278.3 MB in the beginning and 277.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:42:17,120 INFO L168 Benchmark]: RCFGBuilder took 641.25 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 255.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-28 23:42:17,120 INFO L168 Benchmark]: TraceAbstraction took 14264.88 ms. Allocated memory was 302.0 MB in the beginning and 446.7 MB in the end (delta: 144.7 MB). Free memory was 254.2 MB in the beginning and 256.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 144.7 MB. Max. memory is 16.0 GB. [2021-04-28 23:42:17,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 302.0 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 878.54 ms. Allocated memory is still 302.0 MB. Free memory was 274.1 MB in the beginning and 280.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 92.02 ms. Allocated memory is still 302.0 MB. Free memory was 280.3 MB in the beginning and 278.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 55.62 ms. Allocated memory is still 302.0 MB. Free memory was 278.3 MB in the beginning and 277.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 641.25 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 255.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 14264.88 ms. Allocated memory was 302.0 MB in the beginning and 446.7 MB in the end (delta: 144.7 MB). Free memory was 254.2 MB in the beginning and 256.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 144.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11056.5ms, 67 PlacesBefore, 78 PlacesAfterwards, 58 TransitionsBefore, 68 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 6023 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1736, positive: 1550, positive conditional: 1550, positive unconditional: 0, negative: 186, negative conditional: 186, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 831, positive: 782, positive conditional: 0, positive unconditional: 782, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 831, positive: 782, positive conditional: 0, positive unconditional: 782, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 831, positive: 770, positive conditional: 0, positive unconditional: 770, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 61, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 358, positive: 89, positive conditional: 0, positive unconditional: 89, negative: 269, negative conditional: 0, negative unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1736, positive: 768, positive conditional: 768, positive unconditional: 0, negative: 137, negative conditional: 137, negative unconditional: 0, unknown: 831, unknown conditional: 831, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 826, Positive cache size: 777, Positive conditional cache size: 777, Positive unconditional cache size: 0, Negative cache size: 49, Negative conditional cache size: 49, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.7ms, 78 PlacesBefore, 48 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 862 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 206 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 49, positive: 42, positive conditional: 42, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 49, positive: 40, positive conditional: 40, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 829, Positive cache size: 779, Positive conditional cache size: 779, Positive unconditional cache size: 0, Negative cache size: 50, Negative conditional cache size: 50, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.3ms, 52 PlacesBefore, 52 PlacesAfterwards, 45 TransitionsBefore, 45 TransitionsAfterwards, 988 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 222 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 58, positive: 51, positive conditional: 51, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 4, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 4, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 58, positive: 45, positive conditional: 45, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 835, Positive cache size: 785, Positive conditional cache size: 785, Positive unconditional cache size: 0, Negative cache size: 50, Negative conditional cache size: 50, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.9ms, 58 PlacesBefore, 58 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 58, positive: 51, positive conditional: 51, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 58, positive: 49, positive conditional: 49, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 837, Positive cache size: 787, Positive conditional cache size: 787, Positive unconditional cache size: 0, Negative cache size: 50, Negative conditional cache size: 50, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.6ms, 62 PlacesBefore, 60 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 866 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 180 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 39, positive conditional: 39, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 46, positive: 37, positive conditional: 37, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 839, Positive cache size: 789, Positive conditional cache size: 789, Positive unconditional cache size: 0, Negative cache size: 50, Negative conditional cache size: 50, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.2ms, 59 PlacesBefore, 58 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 814 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 173 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 73, positive: 66, positive conditional: 66, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 73, positive: 59, positive conditional: 59, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 847, Positive cache size: 796, Positive conditional cache size: 796, Positive unconditional cache size: 0, Negative cache size: 51, Negative conditional cache size: 51, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.9ms, 59 PlacesBefore, 58 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 728 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 165 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 52, positive: 45, positive conditional: 45, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 52, positive: 42, positive conditional: 42, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 850, Positive cache size: 799, Positive conditional cache size: 799, Positive unconditional cache size: 0, Negative cache size: 51, Negative conditional cache size: 51, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 96.1ms, 60 PlacesBefore, 48 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 130 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 49 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 21, positive conditional: 21, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 23, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 857, Positive cache size: 806, Positive conditional cache size: 806, Positive unconditional cache size: 0, Negative cache size: 51, Negative conditional cache size: 51, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 93.1ms, 43 PlacesBefore, 41 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 68 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 861, Positive cache size: 810, Positive conditional cache size: 810, Positive unconditional cache size: 0, Negative cache size: 51, Negative conditional cache size: 51, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.2ms, 47 PlacesBefore, 44 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 58 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 861, Positive cache size: 810, Positive conditional cache size: 810, Positive unconditional cache size: 0, Negative cache size: 51, Negative conditional cache size: 51, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 43 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 861, Positive cache size: 810, Positive conditional cache size: 810, Positive unconditional cache size: 0, Negative cache size: 51, Negative conditional cache size: 51, Negative unconditional cache size: 0 - 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, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 14119.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1166.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11187.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 76 SDtfs, 50 SDslu, 29 SDs, 0 SdLazy, 257 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 323.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 217.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=3, InterpolantAutomatonStates: 47, 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: 40.2ms SsaConstructionTime, 255.5ms SatisfiabilityAnalysisTime, 746.6ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...