/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:45:16,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:45:16,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:45:16,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:45:16,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:45:16,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:45:16,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:45:16,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:45:16,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:45:16,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:45:16,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:45:16,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:45:16,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:45:16,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:45:16,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:45:16,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:45:16,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:45:16,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:45:16,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:45:16,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:45:16,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:45:16,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:45:16,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:45:16,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:45:16,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 00:45:16,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:45:16,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:45:16,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:45:16,438 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 [2021-03-26 00:45:16,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:45:16,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:45:16,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:45:16,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:45:16,457 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:45:16,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:45:16,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:45:16,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:45:16,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:45:16,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:45:16,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:45:16,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:45:16,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:45:16,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:45:16,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:45:16,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:45:16,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:45:16,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:45:16,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:45:16,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:45:16,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:45:16,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:45:16,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:45:16,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:45:16,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:45:16,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:45:16,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:45:16,460 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:45:16,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:45:16,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:45:16,461 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:45:16,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:45:16,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:45:16,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:45:16,704 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:45:16,704 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:45:16,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-03-26 00:45:16,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dccddd294/3bb200e508a54d28afc6a73abaccd83e/FLAG13bcee6fc [2021-03-26 00:45:17,231 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:45:17,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-03-26 00:45:17,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dccddd294/3bb200e508a54d28afc6a73abaccd83e/FLAG13bcee6fc [2021-03-26 00:45:17,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dccddd294/3bb200e508a54d28afc6a73abaccd83e [2021-03-26 00:45:17,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:45:17,725 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:45:17,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:45:17,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:45:17,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:45:17,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:45:17" (1/1) ... [2021-03-26 00:45:17,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f44ec80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:17, skipping insertion in model container [2021-03-26 00:45:17,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:45:17" (1/1) ... [2021-03-26 00:45:17,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:45:17,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:45:17,857 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/safe023_tso.opt.i[949,962] [2021-03-26 00:45:18,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:45:18,022 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:45:18,030 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/safe023_tso.opt.i[949,962] [2021-03-26 00:45:18,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:45:18,107 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:45:18,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18 WrapperNode [2021-03-26 00:45:18,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:45:18,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:45:18,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:45:18,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:45:18,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... [2021-03-26 00:45:18,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... [2021-03-26 00:45:18,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:45:18,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:45:18,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:45:18,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:45:18,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... [2021-03-26 00:45:18,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... [2021-03-26 00:45:18,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... [2021-03-26 00:45:18,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... [2021-03-26 00:45:18,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... [2021-03-26 00:45:18,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... [2021-03-26 00:45:18,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... [2021-03-26 00:45:18,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:45:18,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:45:18,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:45:18,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:45:18,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:45:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:45:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:45:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:45:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:45:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:45:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:45:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:45:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:45:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 00:45:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 00:45:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:45:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:45:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:45:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:45:18,241 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:45:18,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:45:18,473 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:45:18,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:45:18 BoogieIcfgContainer [2021-03-26 00:45:18,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:45:18,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:45:18,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:45:18,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:45:18,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:45:17" (1/3) ... [2021-03-26 00:45:18,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a895e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:45:18, skipping insertion in model container [2021-03-26 00:45:18,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:45:18" (2/3) ... [2021-03-26 00:45:18,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a895e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:45:18, skipping insertion in model container [2021-03-26 00:45:18,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:45:18" (3/3) ... [2021-03-26 00:45:18,479 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2021-03-26 00:45:18,482 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:45:18,484 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:45:18,485 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:45:18,501 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,502 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,502 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,502 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,502 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,503 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,503 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,503 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,503 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,504 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,504 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,506 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,508 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,510 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,510 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,511 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,512 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,512 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,512 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,512 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:45:18,513 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:45:18,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 00:45:18,537 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:45:18,537 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:45:18,537 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:45:18,537 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:45:18,537 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:45:18,537 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:45:18,537 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:45:18,538 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:45:18,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:45:18,566 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-26 00:45:18,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:45:18,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-26 00:45:18,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 00:45:18,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-26 00:45:18,572 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:45:18,580 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:45:18,581 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 00:45:18,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-26 00:45:18,600 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-26 00:45:18,600 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:45:18,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-26 00:45:18,602 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 00:45:19,738 INFO L154 LiptonReduction]: Checked pairs total: 1010 [2021-03-26 00:45:19,738 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 00:45:19,739 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1168 [2021-03-26 00:45:19,746 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-26 00:45:19,746 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:45:19,747 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:45:19,747 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:45:19,747 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:45:19,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:45:19,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1013680624, now seen corresponding path program 1 times [2021-03-26 00:45:19,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:45:19,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186351143] [2021-03-26 00:45:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:45:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:45:19,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:19,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:45:19,891 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:45:19,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:45:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:45:19,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186351143] [2021-03-26 00:45:19,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:45:19,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:45:19,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306327002] [2021-03-26 00:45:19,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:45:19,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:45:19,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:45:19,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:45:19,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 113 [2021-03-26 00:45:19,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:19,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:45:19,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 113 [2021-03-26 00:45:19,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:45:19,950 INFO L129 PetriNetUnfolder]: 46/141 cut-off events. [2021-03-26 00:45:19,951 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:45:19,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 141 events. 46/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 585 event pairs, 14 based on Foata normal form. 5/133 useless extension candidates. Maximal degree in co-relation 236. Up to 54 conditions per place. [2021-03-26 00:45:19,952 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 7 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2021-03-26 00:45:19,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 89 flow [2021-03-26 00:45:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:45:19,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:45:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2021-03-26 00:45:19,960 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8112094395280236 [2021-03-26 00:45:19,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2021-03-26 00:45:19,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2021-03-26 00:45:19,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:45:19,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2021-03-26 00:45:19,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:19,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:19,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:19,970 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 3 states and 275 transitions. [2021-03-26 00:45:19,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 89 flow [2021-03-26 00:45:19,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:45:19,973 INFO L241 Difference]: Finished difference. Result has 33 places, 27 transitions, 96 flow [2021-03-26 00:45:19,974 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2021-03-26 00:45:19,974 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2021-03-26 00:45:19,974 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:45:19,974 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 27 transitions, 96 flow [2021-03-26 00:45:19,975 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 27 transitions, 96 flow [2021-03-26 00:45:19,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 27 transitions, 96 flow [2021-03-26 00:45:19,988 INFO L129 PetriNetUnfolder]: 46/153 cut-off events. [2021-03-26 00:45:19,988 INFO L130 PetriNetUnfolder]: For 24/28 co-relation queries the response was YES. [2021-03-26 00:45:19,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 153 events. 46/153 cut-off events. For 24/28 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 706 event pairs, 14 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 296. Up to 53 conditions per place. [2021-03-26 00:45:19,990 INFO L142 LiptonReduction]: Number of co-enabled transitions 200 [2021-03-26 00:45:20,400 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:45:20,576 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 00:45:20,652 INFO L154 LiptonReduction]: Checked pairs total: 273 [2021-03-26 00:45:20,652 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 00:45:20,652 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 678 [2021-03-26 00:45:20,653 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2021-03-26 00:45:20,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,654 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:45:20,654 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:45:20,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:45:20,654 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:45:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:45:20,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1359329172, now seen corresponding path program 1 times [2021-03-26 00:45:20,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:45:20,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13818966] [2021-03-26 00:45:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:45:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:45:20,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:20,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:20,690 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 00:45:20,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 00:45:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:45:20,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13818966] [2021-03-26 00:45:20,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:45:20,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:45:20,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622587683] [2021-03-26 00:45:20,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:45:20,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:45:20,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:45:20,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:45:20,699 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 118 [2021-03-26 00:45:20,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:45:20,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 118 [2021-03-26 00:45:20,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:45:20,714 INFO L129 PetriNetUnfolder]: 23/84 cut-off events. [2021-03-26 00:45:20,715 INFO L130 PetriNetUnfolder]: For 33/105 co-relation queries the response was YES. [2021-03-26 00:45:20,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 84 events. 23/84 cut-off events. For 33/105 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 315 event pairs, 3 based on Foata normal form. 8/88 useless extension candidates. Maximal degree in co-relation 226. Up to 30 conditions per place. [2021-03-26 00:45:20,715 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 10 selfloop transitions, 6 changer transitions 2/28 dead transitions. [2021-03-26 00:45:20,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 152 flow [2021-03-26 00:45:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:45:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:45:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2021-03-26 00:45:20,717 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7923728813559322 [2021-03-26 00:45:20,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2021-03-26 00:45:20,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2021-03-26 00:45:20,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:45:20,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2021-03-26 00:45:20,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,720 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,720 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 374 transitions. [2021-03-26 00:45:20,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 152 flow [2021-03-26 00:45:20,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:45:20,721 INFO L241 Difference]: Finished difference. Result has 32 places, 25 transitions, 118 flow [2021-03-26 00:45:20,722 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2021-03-26 00:45:20,722 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-26 00:45:20,722 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:45:20,722 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 25 transitions, 118 flow [2021-03-26 00:45:20,722 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 25 transitions, 118 flow [2021-03-26 00:45:20,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 118 flow [2021-03-26 00:45:20,728 INFO L129 PetriNetUnfolder]: 23/92 cut-off events. [2021-03-26 00:45:20,728 INFO L130 PetriNetUnfolder]: For 47/56 co-relation queries the response was YES. [2021-03-26 00:45:20,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 92 events. 23/92 cut-off events. For 47/56 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 408 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 205. Up to 30 conditions per place. [2021-03-26 00:45:20,729 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-26 00:45:20,742 INFO L154 LiptonReduction]: Checked pairs total: 105 [2021-03-26 00:45:20,743 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:45:20,743 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-03-26 00:45:20,744 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 118 flow [2021-03-26 00:45:20,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,744 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:45:20,744 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:45:20,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:45:20,744 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:45:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:45:20,745 INFO L82 PathProgramCache]: Analyzing trace with hash -292561667, now seen corresponding path program 1 times [2021-03-26 00:45:20,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:45:20,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377564846] [2021-03-26 00:45:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:45:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:45:20,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:20,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:45:20,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377564846] [2021-03-26 00:45:20,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:45:20,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 00:45:20,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400732063] [2021-03-26 00:45:20,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:45:20,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:45:20,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:45:20,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:45:20,773 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 118 [2021-03-26 00:45:20,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:45:20,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 118 [2021-03-26 00:45:20,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:45:20,780 INFO L129 PetriNetUnfolder]: 22/82 cut-off events. [2021-03-26 00:45:20,781 INFO L130 PetriNetUnfolder]: For 82/103 co-relation queries the response was YES. [2021-03-26 00:45:20,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 82 events. 22/82 cut-off events. For 82/103 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 295 event pairs, 2 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 203. Up to 30 conditions per place. [2021-03-26 00:45:20,781 INFO L132 encePairwiseOnDemand]: 115/118 looper letters, 1 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2021-03-26 00:45:20,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 128 flow [2021-03-26 00:45:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:45:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:45:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-03-26 00:45:20,783 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8757062146892656 [2021-03-26 00:45:20,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-03-26 00:45:20,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-03-26 00:45:20,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:45:20,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-03-26 00:45:20,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,785 INFO L185 Difference]: Start difference. First operand has 32 places, 25 transitions, 118 flow. Second operand 3 states and 310 transitions. [2021-03-26 00:45:20,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 128 flow [2021-03-26 00:45:20,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 125 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:45:20,786 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 129 flow [2021-03-26 00:45:20,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2021-03-26 00:45:20,786 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2021-03-26 00:45:20,786 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:45:20,787 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 25 transitions, 129 flow [2021-03-26 00:45:20,787 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 25 transitions, 129 flow [2021-03-26 00:45:20,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 25 transitions, 129 flow [2021-03-26 00:45:20,791 INFO L129 PetriNetUnfolder]: 22/92 cut-off events. [2021-03-26 00:45:20,791 INFO L130 PetriNetUnfolder]: For 54/60 co-relation queries the response was YES. [2021-03-26 00:45:20,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 92 events. 22/92 cut-off events. For 54/60 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 394 event pairs, 1 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 221. Up to 30 conditions per place. [2021-03-26 00:45:20,792 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-26 00:45:20,797 INFO L154 LiptonReduction]: Checked pairs total: 73 [2021-03-26 00:45:20,797 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:45:20,797 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-26 00:45:20,798 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 129 flow [2021-03-26 00:45:20,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,798 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:45:20,798 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:45:20,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:45:20,798 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:45:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:45:20,799 INFO L82 PathProgramCache]: Analyzing trace with hash -262191184, now seen corresponding path program 1 times [2021-03-26 00:45:20,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:45:20,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451801188] [2021-03-26 00:45:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:45:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:45:20,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:20,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:45:20,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:20,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:45:20,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451801188] [2021-03-26 00:45:20,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:45:20,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:45:20,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865793957] [2021-03-26 00:45:20,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:45:20,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:45:20,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:45:20,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:45:20,838 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 118 [2021-03-26 00:45:20,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:45:20,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 118 [2021-03-26 00:45:20,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:45:20,858 INFO L129 PetriNetUnfolder]: 20/87 cut-off events. [2021-03-26 00:45:20,858 INFO L130 PetriNetUnfolder]: For 83/105 co-relation queries the response was YES. [2021-03-26 00:45:20,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 87 events. 20/87 cut-off events. For 83/105 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 368 event pairs, 0 based on Foata normal form. 3/88 useless extension candidates. Maximal degree in co-relation 269. Up to 34 conditions per place. [2021-03-26 00:45:20,859 INFO L132 encePairwiseOnDemand]: 115/118 looper letters, 10 selfloop transitions, 5 changer transitions 4/32 dead transitions. [2021-03-26 00:45:20,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 209 flow [2021-03-26 00:45:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:45:20,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:45:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-03-26 00:45:20,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8757062146892656 [2021-03-26 00:45:20,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-03-26 00:45:20,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-03-26 00:45:20,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:45:20,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-03-26 00:45:20,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,862 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 129 flow. Second operand 3 states and 310 transitions. [2021-03-26 00:45:20,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 209 flow [2021-03-26 00:45:20,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:45:20,866 INFO L241 Difference]: Finished difference. Result has 35 places, 25 transitions, 138 flow [2021-03-26 00:45:20,866 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2021-03-26 00:45:20,867 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-26 00:45:20,867 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:45:20,867 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 25 transitions, 138 flow [2021-03-26 00:45:20,868 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 25 transitions, 138 flow [2021-03-26 00:45:20,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 138 flow [2021-03-26 00:45:20,872 INFO L129 PetriNetUnfolder]: 13/60 cut-off events. [2021-03-26 00:45:20,872 INFO L130 PetriNetUnfolder]: For 55/71 co-relation queries the response was YES. [2021-03-26 00:45:20,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 60 events. 13/60 cut-off events. For 55/71 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 191 event pairs, 1 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 169. Up to 21 conditions per place. [2021-03-26 00:45:20,874 INFO L142 LiptonReduction]: Number of co-enabled transitions 146 [2021-03-26 00:45:20,880 INFO L154 LiptonReduction]: Checked pairs total: 132 [2021-03-26 00:45:20,880 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:45:20,882 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-26 00:45:20,884 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 138 flow [2021-03-26 00:45:20,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,885 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:45:20,885 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:45:20,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:45:20,885 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:45:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:45:20,885 INFO L82 PathProgramCache]: Analyzing trace with hash -479477582, now seen corresponding path program 1 times [2021-03-26 00:45:20,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:45:20,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255834353] [2021-03-26 00:45:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:45:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:45:20,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:20,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:20,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:20,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:45:20,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255834353] [2021-03-26 00:45:20,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:45:20,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:45:20,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001575541] [2021-03-26 00:45:20,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:45:20,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:45:20,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:45:20,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:45:20,933 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 118 [2021-03-26 00:45:20,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:45:20,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 118 [2021-03-26 00:45:20,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:45:20,951 INFO L129 PetriNetUnfolder]: 16/74 cut-off events. [2021-03-26 00:45:20,952 INFO L130 PetriNetUnfolder]: For 111/130 co-relation queries the response was YES. [2021-03-26 00:45:20,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 74 events. 16/74 cut-off events. For 111/130 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 303 event pairs, 1 based on Foata normal form. 6/79 useless extension candidates. Maximal degree in co-relation 215. Up to 26 conditions per place. [2021-03-26 00:45:20,956 INFO L132 encePairwiseOnDemand]: 114/118 looper letters, 1 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2021-03-26 00:45:20,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 168 flow [2021-03-26 00:45:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:45:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:45:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2021-03-26 00:45:20,965 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8453389830508474 [2021-03-26 00:45:20,965 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 399 transitions. [2021-03-26 00:45:20,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 399 transitions. [2021-03-26 00:45:20,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:45:20,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 399 transitions. [2021-03-26 00:45:20,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,967 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:20,967 INFO L185 Difference]: Start difference. First operand has 35 places, 25 transitions, 138 flow. Second operand 4 states and 399 transitions. [2021-03-26 00:45:20,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 168 flow [2021-03-26 00:45:20,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 27 transitions, 163 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:45:20,969 INFO L241 Difference]: Finished difference. Result has 39 places, 20 transitions, 121 flow [2021-03-26 00:45:20,969 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=20} [2021-03-26 00:45:20,970 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2021-03-26 00:45:20,970 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:45:20,970 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 20 transitions, 121 flow [2021-03-26 00:45:20,970 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 20 transitions, 121 flow [2021-03-26 00:45:20,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 20 transitions, 121 flow [2021-03-26 00:45:20,972 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-03-26 00:45:20,972 INFO L130 PetriNetUnfolder]: For 35/39 co-relation queries the response was YES. [2021-03-26 00:45:20,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 28 events. 1/28 cut-off events. For 35/39 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 78. Up to 7 conditions per place. [2021-03-26 00:45:20,973 INFO L142 LiptonReduction]: Number of co-enabled transitions 98 [2021-03-26 00:45:21,109 INFO L154 LiptonReduction]: Checked pairs total: 132 [2021-03-26 00:45:21,109 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 00:45:21,109 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 139 [2021-03-26 00:45:21,110 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 123 flow [2021-03-26 00:45:21,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,111 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:45:21,111 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:45:21,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:45:21,111 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:45:21,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:45:21,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1983625698, now seen corresponding path program 1 times [2021-03-26 00:45:21,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:45:21,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094519737] [2021-03-26 00:45:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:45:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:45:21,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:21,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:21,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:21,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:45:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:45:21,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094519737] [2021-03-26 00:45:21,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:45:21,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:45:21,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862658487] [2021-03-26 00:45:21,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:45:21,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:45:21,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:45:21,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:45:21,168 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 123 [2021-03-26 00:45:21,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:45:21,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 123 [2021-03-26 00:45:21,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:45:21,186 INFO L129 PetriNetUnfolder]: 29/72 cut-off events. [2021-03-26 00:45:21,186 INFO L130 PetriNetUnfolder]: For 194/219 co-relation queries the response was YES. [2021-03-26 00:45:21,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 72 events. 29/72 cut-off events. For 194/219 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 250 event pairs, 9 based on Foata normal form. 5/71 useless extension candidates. Maximal degree in co-relation 245. Up to 57 conditions per place. [2021-03-26 00:45:21,187 INFO L132 encePairwiseOnDemand]: 117/123 looper letters, 4 selfloop transitions, 3 changer transitions 6/22 dead transitions. [2021-03-26 00:45:21,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 22 transitions, 167 flow [2021-03-26 00:45:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:45:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:45:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2021-03-26 00:45:21,188 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8265582655826558 [2021-03-26 00:45:21,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2021-03-26 00:45:21,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2021-03-26 00:45:21,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:45:21,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2021-03-26 00:45:21,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,191 INFO L185 Difference]: Start difference. First operand has 37 places, 18 transitions, 123 flow. Second operand 3 states and 305 transitions. [2021-03-26 00:45:21,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 22 transitions, 167 flow [2021-03-26 00:45:21,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 120 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-26 00:45:21,192 INFO L241 Difference]: Finished difference. Result has 33 places, 16 transitions, 83 flow [2021-03-26 00:45:21,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2021-03-26 00:45:21,193 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2021-03-26 00:45:21,193 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:45:21,193 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 16 transitions, 83 flow [2021-03-26 00:45:21,193 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 16 transitions, 83 flow [2021-03-26 00:45:21,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 16 transitions, 83 flow [2021-03-26 00:45:21,196 INFO L129 PetriNetUnfolder]: 12/39 cut-off events. [2021-03-26 00:45:21,196 INFO L130 PetriNetUnfolder]: For 58/62 co-relation queries the response was YES. [2021-03-26 00:45:21,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 39 events. 12/39 cut-off events. For 58/62 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 91 event pairs, 7 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 97. Up to 28 conditions per place. [2021-03-26 00:45:21,197 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-26 00:45:21,231 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-26 00:45:21,232 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:45:21,232 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-03-26 00:45:21,232 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 16 transitions, 87 flow [2021-03-26 00:45:21,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,233 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:45:21,233 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:45:21,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:45:21,233 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:45:21,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:45:21,234 INFO L82 PathProgramCache]: Analyzing trace with hash -512352862, now seen corresponding path program 1 times [2021-03-26 00:45:21,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:45:21,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719627211] [2021-03-26 00:45:21,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:45:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:45:21,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:21,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:21,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:21,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:21,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:21,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:45:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:45:21,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719627211] [2021-03-26 00:45:21,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:45:21,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:45:21,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571466558] [2021-03-26 00:45:21,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:45:21,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:45:21,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:45:21,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:45:21,279 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 124 [2021-03-26 00:45:21,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 16 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:45:21,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 124 [2021-03-26 00:45:21,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:45:21,295 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-03-26 00:45:21,295 INFO L130 PetriNetUnfolder]: For 52/62 co-relation queries the response was YES. [2021-03-26 00:45:21,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 29 events. 6/29 cut-off events. For 52/62 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 1 based on Foata normal form. 4/31 useless extension candidates. Maximal degree in co-relation 93. Up to 18 conditions per place. [2021-03-26 00:45:21,295 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 2 selfloop transitions, 5 changer transitions 3/19 dead transitions. [2021-03-26 00:45:21,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 19 transitions, 123 flow [2021-03-26 00:45:21,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:45:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:45:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-26 00:45:21,296 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8125 [2021-03-26 00:45:21,297 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-26 00:45:21,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-26 00:45:21,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:45:21,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-26 00:45:21,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,298 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,298 INFO L185 Difference]: Start difference. First operand has 32 places, 16 transitions, 87 flow. Second operand 4 states and 403 transitions. [2021-03-26 00:45:21,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 19 transitions, 123 flow [2021-03-26 00:45:21,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 99 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-26 00:45:21,299 INFO L241 Difference]: Finished difference. Result has 31 places, 16 transitions, 84 flow [2021-03-26 00:45:21,299 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=31, PETRI_TRANSITIONS=16} [2021-03-26 00:45:21,299 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2021-03-26 00:45:21,299 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:45:21,299 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 16 transitions, 84 flow [2021-03-26 00:45:21,300 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 16 transitions, 84 flow [2021-03-26 00:45:21,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 16 transitions, 84 flow [2021-03-26 00:45:21,301 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-26 00:45:21,301 INFO L130 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2021-03-26 00:45:21,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 21 events. 2/21 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 1 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 53. Up to 10 conditions per place. [2021-03-26 00:45:21,306 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-26 00:45:21,391 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-26 00:45:21,391 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 00:45:21,391 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 92 [2021-03-26 00:45:21,391 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 15 transitions, 85 flow [2021-03-26 00:45:21,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:45:21,392 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:45:21,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 00:45:21,392 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:45:21,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:45:21,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1117951668, now seen corresponding path program 1 times [2021-03-26 00:45:21,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:45:21,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765466806] [2021-03-26 00:45:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:45:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:45:21,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:21,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:21,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:21,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:21,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:21,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:45:21,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:45:21,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:45:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:45:21,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765466806] [2021-03-26 00:45:21,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:45:21,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:45:21,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021386055] [2021-03-26 00:45:21,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:45:21,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:45:21,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:45:21,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:45:21,420 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 126 [2021-03-26 00:45:21,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 15 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:45:21,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 126 [2021-03-26 00:45:21,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:45:21,434 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-26 00:45:21,434 INFO L130 PetriNetUnfolder]: For 44/52 co-relation queries the response was YES. [2021-03-26 00:45:21,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 17 events. 1/17 cut-off events. For 44/52 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 4/18 useless extension candidates. Maximal degree in co-relation 47. Up to 6 conditions per place. [2021-03-26 00:45:21,434 INFO L132 encePairwiseOnDemand]: 119/126 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2021-03-26 00:45:21,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 14 transitions, 87 flow [2021-03-26 00:45:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:45:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:45:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2021-03-26 00:45:21,436 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7888888888888889 [2021-03-26 00:45:21,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2021-03-26 00:45:21,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2021-03-26 00:45:21,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:45:21,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2021-03-26 00:45:21,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,438 INFO L185 Difference]: Start difference. First operand has 30 places, 15 transitions, 85 flow. Second operand 5 states and 497 transitions. [2021-03-26 00:45:21,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 14 transitions, 87 flow [2021-03-26 00:45:21,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 14 transitions, 71 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-26 00:45:21,438 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-03-26 00:45:21,438 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-03-26 00:45:21,438 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2021-03-26 00:45:21,439 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:45:21,439 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-26 00:45:21,439 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-26 00:45:21,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:45:21,439 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:45:21,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:45:21,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 00:45:21,439 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:45:21,439 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:45:21,439 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:45:21,439 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 00:45:21,440 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:45:21,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:45:21,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 00:45:21,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:45:21 BasicIcfg [2021-03-26 00:45:21,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:45:21,443 INFO L168 Benchmark]: Toolchain (without parser) took 3718.43 ms. Allocated memory was 255.9 MB in the beginning and 398.5 MB in the end (delta: 142.6 MB). Free memory was 235.1 MB in the beginning and 263.9 MB in the end (delta: -28.8 MB). Peak memory consumption was 112.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:45:21,443 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory was 238.0 MB in the beginning and 237.9 MB in the end (delta: 102.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:45:21,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.11 ms. Allocated memory was 255.9 MB in the beginning and 331.4 MB in the end (delta: 75.5 MB). Free memory was 235.1 MB in the beginning and 295.0 MB in the end (delta: -59.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-26 00:45:21,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.24 ms. Allocated memory is still 331.4 MB. Free memory was 294.5 MB in the beginning and 292.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:45:21,444 INFO L168 Benchmark]: Boogie Preprocessor took 24.05 ms. Allocated memory is still 331.4 MB. Free memory was 292.9 MB in the beginning and 291.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:45:21,444 INFO L168 Benchmark]: RCFGBuilder took 295.41 ms. Allocated memory is still 331.4 MB. Free memory was 291.4 MB in the beginning and 269.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:45:21,444 INFO L168 Benchmark]: TraceAbstraction took 2966.93 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 268.8 MB in the beginning and 263.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.0 GB. [2021-03-26 00:45:21,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory was 238.0 MB in the beginning and 237.9 MB in the end (delta: 102.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 384.11 ms. Allocated memory was 255.9 MB in the beginning and 331.4 MB in the end (delta: 75.5 MB). Free memory was 235.1 MB in the beginning and 295.0 MB in the end (delta: -59.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.24 ms. Allocated memory is still 331.4 MB. Free memory was 294.5 MB in the beginning and 292.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.05 ms. Allocated memory is still 331.4 MB. Free memory was 292.9 MB in the beginning and 291.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 295.41 ms. Allocated memory is still 331.4 MB. Free memory was 291.4 MB in the beginning and 269.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2966.93 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 268.8 MB in the beginning and 263.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1156.4ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 707, positive: 671, positive conditional: 671, positive unconditional: 0, negative: 36, negative conditional: 36, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 538, positive: 518, positive conditional: 0, positive unconditional: 518, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 538, positive: 518, positive conditional: 0, positive unconditional: 518, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 538, positive: 511, positive conditional: 0, positive unconditional: 511, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 80, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 707, positive: 153, positive conditional: 153, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 538, unknown conditional: 538, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 45, Positive unconditional cache size: 0, Negative cache size: 8, Negative conditional cache size: 8, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 677.7ms, 33 PlacesBefore, 28 PlacesAfterwards, 27 TransitionsBefore, 22 TransitionsAfterwards, 200 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 273 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 125, positive: 109, positive conditional: 109, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 66, positive: 59, positive conditional: 7, positive unconditional: 52, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 66, positive: 59, positive conditional: 7, positive unconditional: 52, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 66, positive: 55, positive conditional: 0, positive unconditional: 55, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 40, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 24, negative conditional: 10, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 125, positive: 50, positive conditional: 50, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 66, unknown conditional: 66, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 57, Positive conditional cache size: 57, Positive unconditional cache size: 0, Negative cache size: 12, Negative conditional cache size: 12, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.3ms, 32 PlacesBefore, 32 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 105 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 63, positive: 56, positive conditional: 56, 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: 22, positive: 19, positive conditional: 8, positive unconditional: 11, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 22, positive: 19, positive conditional: 8, positive unconditional: 11, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 22, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 63, positive: 37, positive conditional: 37, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 22, unknown conditional: 22, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 76, Positive conditional cache size: 76, Positive unconditional cache size: 0, Negative cache size: 15, Negative conditional cache size: 15, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.3ms, 34 PlacesBefore, 34 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 73 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 60, positive: 55, positive conditional: 55, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 15, positive: 14, positive conditional: 5, positive unconditional: 9, 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: 15, positive: 14, positive conditional: 5, positive unconditional: 9, 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: 15, positive: 14, positive conditional: 0, positive unconditional: 14, 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: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 60, positive: 41, positive conditional: 41, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 15, unknown conditional: 15, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 106, Positive cache size: 90, Positive conditional cache size: 90, Positive unconditional cache size: 0, Negative cache size: 16, Negative conditional cache size: 16, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.5ms, 35 PlacesBefore, 35 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 146 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 132 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 70, positive: 60, positive conditional: 60, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 8, positive conditional: 4, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 8, positive conditional: 4, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 70, positive: 52, positive conditional: 52, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 10, unknown conditional: 10, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 98, Positive conditional cache size: 98, Positive unconditional cache size: 0, Negative cache size: 18, Negative conditional cache size: 18, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 139.3ms, 39 PlacesBefore, 37 PlacesAfterwards, 20 TransitionsBefore, 18 TransitionsAfterwards, 98 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 132 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 102, positive: 91, positive conditional: 91, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 27, positive: 27, positive conditional: 17, positive unconditional: 10, 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: 27, positive: 27, positive conditional: 17, positive unconditional: 10, 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: 27, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 2, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 22, positive: 22, positive conditional: 17, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 102, positive: 64, positive conditional: 64, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 27, unknown conditional: 27, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 36, Positive conditional cache size: 36, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.7ms, 33 PlacesBefore, 32 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, 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: 6, positive: 6, positive conditional: 6, 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: 6, positive: 6, positive conditional: 6, 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: 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: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 21, Positive conditional cache size: 21, Positive unconditional cache size: 0, Negative cache size: 1, Negative conditional cache size: 1, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 91.1ms, 31 PlacesBefore, 30 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 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): 7, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4ms, 29 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 7, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, 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, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2906.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 231.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1205.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 6 SDslu, 4 SDs, 0 SdLazy, 67 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=4, InterpolantAutomatonStates: 29, 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: 14.8ms SsaConstructionTime, 103.1ms SatisfiabilityAnalysisTime, 234.1ms InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 426 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...