/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 10:43:15,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 10:43:15,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 10:43:15,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 10:43:15,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 10:43:15,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 10:43:15,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 10:43:15,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 10:43:15,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 10:43:15,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 10:43:15,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 10:43:15,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 10:43:15,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 10:43:15,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 10:43:15,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 10:43:15,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 10:43:15,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 10:43:15,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 10:43:15,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 10:43:15,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 10:43:15,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 10:43:15,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 10:43:15,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 10:43:15,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 10:43:15,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 10:43:15,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 10:43:15,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 10:43:15,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 10:43:15,628 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 10:43:15,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 10:43:15,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 10:43:15,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 10:43:15,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 10:43:15,644 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 10:43:15,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 10:43:15,644 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 10:43:15,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 10:43:15,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 10:43:15,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 10:43:15,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 10:43:15,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 10:43:15,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 10:43:15,645 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 10:43:15,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 10:43:15,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 10:43:15,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 10:43:15,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 10:43:15,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 10:43:15,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 10:43:15,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 10:43:15,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 10:43:15,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 10:43:15,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 10:43:15,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 10:43:15,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 10:43:15,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 10:43:15,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 10:43:15,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 10:43:15,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 10:43:15,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 10:43:15,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 10:43:15,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 10:43:15,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 10:43:15,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 10:43:15,941 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 10:43:15,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2021-03-26 10:43:15,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529588995/ed34abc298e34e14b391a9bb9fcca9ba/FLAGbce63869a [2021-03-26 10:43:16,430 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 10:43:16,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2021-03-26 10:43:16,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529588995/ed34abc298e34e14b391a9bb9fcca9ba/FLAGbce63869a [2021-03-26 10:43:16,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/529588995/ed34abc298e34e14b391a9bb9fcca9ba [2021-03-26 10:43:16,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 10:43:16,461 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 10:43:16,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 10:43:16,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 10:43:16,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 10:43:16,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75518b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16, skipping insertion in model container [2021-03-26 10:43:16,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 10:43:16,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 10:43:16,598 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/safe033_tso.opt.i[949,962] [2021-03-26 10:43:16,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:43:16,740 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 10:43:16,748 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/safe033_tso.opt.i[949,962] [2021-03-26 10:43:16,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:43:16,820 INFO L208 MainTranslator]: Completed translation [2021-03-26 10:43:16,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16 WrapperNode [2021-03-26 10:43:16,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 10:43:16,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 10:43:16,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 10:43:16,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 10:43:16,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 10:43:16,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 10:43:16,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 10:43:16,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 10:43:16,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (1/1) ... [2021-03-26 10:43:16,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 10:43:16,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 10:43:16,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 10:43:16,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 10:43:16,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (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 10:43:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 10:43:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 10:43:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 10:43:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 10:43:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 10:43:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 10:43:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 10:43:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 10:43:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 10:43:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 10:43:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 10:43:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 10:43:16,950 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 10:43:17,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 10:43:17,267 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 10:43:17,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:43:17 BoogieIcfgContainer [2021-03-26 10:43:17,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 10:43:17,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 10:43:17,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 10:43:17,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 10:43:17,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 10:43:16" (1/3) ... [2021-03-26 10:43:17,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345f36f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:43:17, skipping insertion in model container [2021-03-26 10:43:17,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:43:16" (2/3) ... [2021-03-26 10:43:17,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345f36f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:43:17, skipping insertion in model container [2021-03-26 10:43:17,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:43:17" (3/3) ... [2021-03-26 10:43:17,276 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2021-03-26 10:43:17,280 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 10:43:17,282 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 10:43:17,283 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 10:43:17,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,306 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,306 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,306 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,306 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,308 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,308 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,309 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,309 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,309 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,316 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,316 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,316 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:43:17,317 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 10:43:17,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 10:43:17,352 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 10:43:17,352 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 10:43:17,353 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 10:43:17,353 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 10:43:17,353 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 10:43:17,353 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 10:43:17,354 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 10:43:17,354 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 10:43:17,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2021-03-26 10:43:17,384 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2021-03-26 10:43:17,384 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:43:17,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-26 10:43:17,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 60 transitions, 130 flow [2021-03-26 10:43:17,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 48 transitions, 102 flow [2021-03-26 10:43:17,393 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:43:17,402 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-26 10:43:17,404 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-26 10:43:17,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 48 transitions, 102 flow [2021-03-26 10:43:17,414 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-26 10:43:17,414 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:43:17,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-26 10:43:17,416 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-26 10:43:18,206 INFO L154 LiptonReduction]: Checked pairs total: 532 [2021-03-26 10:43:18,206 INFO L156 LiptonReduction]: Total number of compositions: 32 [2021-03-26 10:43:18,210 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 818 [2021-03-26 10:43:18,221 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 10:43:18,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:43:18,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:43:18,222 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:43:18,223 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:43:18,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:43:18,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1129834663, now seen corresponding path program 1 times [2021-03-26 10:43:18,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:43:18,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953789892] [2021-03-26 10:43:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:43:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:43:18,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:18,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:43:18,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:18,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:43:18,423 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 10:43:18,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953789892] [2021-03-26 10:43:18,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:43:18,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:43:18,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265087415] [2021-03-26 10:43:18,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 10:43:18,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:43:18,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 10:43:18,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 10:43:18,438 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 92 [2021-03-26 10:43:18,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 10:43:18,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:43:18,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 92 [2021-03-26 10:43:18,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:43:18,461 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2021-03-26 10:43:18,461 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:43:18,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 24 events. 3/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 1 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 30. Up to 10 conditions per place. [2021-03-26 10:43:18,462 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 3 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2021-03-26 10:43:18,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 54 flow [2021-03-26 10:43:18,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 10:43:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 10:43:18,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2021-03-26 10:43:18,472 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8731884057971014 [2021-03-26 10:43:18,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2021-03-26 10:43:18,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2021-03-26 10:43:18,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:43:18,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2021-03-26 10:43:18,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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 10:43:18,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 10:43:18,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 10:43:18,495 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 38 flow. Second operand 3 states and 241 transitions. [2021-03-26 10:43:18,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 54 flow [2021-03-26 10:43:18,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 10:43:18,501 INFO L241 Difference]: Finished difference. Result has 24 places, 18 transitions, 55 flow [2021-03-26 10:43:18,504 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2021-03-26 10:43:18,505 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2021-03-26 10:43:18,505 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:43:18,505 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 18 transitions, 55 flow [2021-03-26 10:43:18,506 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 18 transitions, 55 flow [2021-03-26 10:43:18,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 18 transitions, 55 flow [2021-03-26 10:43:18,510 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2021-03-26 10:43:18,510 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 10:43:18,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 24 events. 3/24 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 32. Up to 10 conditions per place. [2021-03-26 10:43:18,511 INFO L142 LiptonReduction]: Number of co-enabled transitions 68 [2021-03-26 10:43:18,796 INFO L154 LiptonReduction]: Checked pairs total: 146 [2021-03-26 10:43:18,796 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 10:43:18,796 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 291 [2021-03-26 10:43:18,798 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 49 flow [2021-03-26 10:43:18,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 10:43:18,798 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:43:18,798 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:43:18,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 10:43:18,798 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:43:18,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:43:18,804 INFO L82 PathProgramCache]: Analyzing trace with hash -665136664, now seen corresponding path program 1 times [2021-03-26 10:43:18,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:43:18,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340995636] [2021-03-26 10:43:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:43:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:43:18,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:18,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:43:18,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:18,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:43:18,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:18,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:43:18,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:18,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:43:18,859 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 10:43:18,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340995636] [2021-03-26 10:43:18,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:43:18,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:43:18,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207423839] [2021-03-26 10:43:18,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:43:18,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:43:18,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:43:18,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:43:18,862 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2021-03-26 10:43:18,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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 10:43:18,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:43:18,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2021-03-26 10:43:18,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:43:18,874 INFO L129 PetriNetUnfolder]: 7/30 cut-off events. [2021-03-26 10:43:18,875 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 10:43:18,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 30 events. 7/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 3 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 54. Up to 13 conditions per place. [2021-03-26 10:43:18,875 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 3 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2021-03-26 10:43:18,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 65 flow [2021-03-26 10:43:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 10:43:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 10:43:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2021-03-26 10:43:18,878 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2021-03-26 10:43:18,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2021-03-26 10:43:18,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2021-03-26 10:43:18,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:43:18,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2021-03-26 10:43:18,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 10:43:18,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:43:18,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:43:18,880 INFO L185 Difference]: Start difference. First operand has 21 places, 15 transitions, 49 flow. Second operand 3 states and 220 transitions. [2021-03-26 10:43:18,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 65 flow [2021-03-26 10:43:18,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 10:43:18,881 INFO L241 Difference]: Finished difference. Result has 23 places, 17 transitions, 65 flow [2021-03-26 10:43:18,881 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2021-03-26 10:43:18,881 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2021-03-26 10:43:18,881 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:43:18,882 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 17 transitions, 65 flow [2021-03-26 10:43:18,882 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 17 transitions, 65 flow [2021-03-26 10:43:18,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 17 transitions, 65 flow [2021-03-26 10:43:18,886 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2021-03-26 10:43:18,886 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 10:43:18,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 32 events. 7/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 2 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 57. Up to 13 conditions per place. [2021-03-26 10:43:18,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 10:43:19,006 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-03-26 10:43:19,177 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-03-26 10:43:19,231 INFO L154 LiptonReduction]: Checked pairs total: 48 [2021-03-26 10:43:19,231 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:43:19,231 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 350 [2021-03-26 10:43:19,232 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 63 flow [2021-03-26 10:43:19,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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 10:43:19,232 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:43:19,232 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:43:19,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 10:43:19,232 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:43:19,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:43:19,233 INFO L82 PathProgramCache]: Analyzing trace with hash 948326889, now seen corresponding path program 1 times [2021-03-26 10:43:19,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:43:19,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573356972] [2021-03-26 10:43:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:43:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:43:19,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:19,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:43:19,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:19,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:43:19,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:19,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:43:19,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:19,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:43:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:43:19,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573356972] [2021-03-26 10:43:19,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:43:19,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:43:19,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339141037] [2021-03-26 10:43:19,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:43:19,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:43:19,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:43:19,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:43:19,295 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 96 [2021-03-26 10:43:19,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 10:43:19,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:43:19,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 96 [2021-03-26 10:43:19,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:43:19,316 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-26 10:43:19,316 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2021-03-26 10:43:19,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 17 events. 2/17 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 5/22 useless extension candidates. Maximal degree in co-relation 37. Up to 7 conditions per place. [2021-03-26 10:43:19,318 INFO L132 encePairwiseOnDemand]: 92/96 looper letters, 1 selfloop transitions, 5 changer transitions 0/16 dead transitions. [2021-03-26 10:43:19,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 16 transitions, 75 flow [2021-03-26 10:43:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:43:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:43:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2021-03-26 10:43:19,322 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2021-03-26 10:43:19,322 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2021-03-26 10:43:19,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2021-03-26 10:43:19,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:43:19,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2021-03-26 10:43:19,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 10:43:19,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 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 10:43:19,325 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 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 10:43:19,325 INFO L185 Difference]: Start difference. First operand has 22 places, 16 transitions, 63 flow. Second operand 4 states and 315 transitions. [2021-03-26 10:43:19,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 16 transitions, 75 flow [2021-03-26 10:43:19,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 70 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-26 10:43:19,327 INFO L241 Difference]: Finished difference. Result has 25 places, 16 transitions, 74 flow [2021-03-26 10:43:19,327 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, 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=74, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2021-03-26 10:43:19,327 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2021-03-26 10:43:19,327 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:43:19,327 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 16 transitions, 74 flow [2021-03-26 10:43:19,327 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 16 transitions, 74 flow [2021-03-26 10:43:19,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 16 transitions, 74 flow [2021-03-26 10:43:19,332 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2021-03-26 10:43:19,332 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-26 10:43:19,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 18 events. 2/18 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 36. Up to 7 conditions per place. [2021-03-26 10:43:19,333 INFO L142 LiptonReduction]: Number of co-enabled transitions 26 [2021-03-26 10:43:19,390 INFO L154 LiptonReduction]: Checked pairs total: 42 [2021-03-26 10:43:19,391 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:43:19,391 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-26 10:43:19,394 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 72 flow [2021-03-26 10:43:19,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 10:43:19,394 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:43:19,394 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:43:19,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 10:43:19,394 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:43:19,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:43:19,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1050378126, now seen corresponding path program 1 times [2021-03-26 10:43:19,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:43:19,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121971302] [2021-03-26 10:43:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:43:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:43:19,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:19,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:43:19,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:43:19,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:43:19,451 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-26 10:43:19,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:43:19,456 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 10:43:19,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121971302] [2021-03-26 10:43:19,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:43:19,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:43:19,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211880834] [2021-03-26 10:43:19,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:43:19,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:43:19,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:43:19,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:43:19,458 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2021-03-26 10:43:19,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 10:43:19,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:43:19,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2021-03-26 10:43:19,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:43:19,481 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2021-03-26 10:43:19,482 INFO L130 PetriNetUnfolder]: For 23/26 co-relation queries the response was YES. [2021-03-26 10:43:19,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 25 events. 5/25 cut-off events. For 23/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 4/28 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2021-03-26 10:43:19,482 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2021-03-26 10:43:19,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 104 flow [2021-03-26 10:43:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:43:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:43:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2021-03-26 10:43:19,484 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7649484536082474 [2021-03-26 10:43:19,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2021-03-26 10:43:19,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2021-03-26 10:43:19,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:43:19,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2021-03-26 10:43:19,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 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 10:43:19,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 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 10:43:19,486 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 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 10:43:19,486 INFO L185 Difference]: Start difference. First operand has 24 places, 15 transitions, 72 flow. Second operand 5 states and 371 transitions. [2021-03-26 10:43:19,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 104 flow [2021-03-26 10:43:19,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 87 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-26 10:43:19,487 INFO L241 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2021-03-26 10:43:19,487 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=19, 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=23, PETRI_TRANSITIONS=0} [2021-03-26 10:43:19,487 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2021-03-26 10:43:19,487 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:43:19,487 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 0 transitions, 0 flow [2021-03-26 10:43:19,488 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 0 transitions, 0 flow [2021-03-26 10:43:19,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 10:43:19,488 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 10:43:19,488 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:43:19,488 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 10:43:19,488 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 10:43:19,488 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:43:19,488 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:43:19,488 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 10:43:19,489 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 10:43:19,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 10:43:19,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 10:43:19,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 10:43:19 BasicIcfg [2021-03-26 10:43:19,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 10:43:19,492 INFO L168 Benchmark]: Toolchain (without parser) took 3031.20 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 235.9 MB in the beginning and 263.8 MB in the end (delta: -27.9 MB). Peak memory consumption was 176.6 MB. Max. memory is 16.0 GB. [2021-03-26 10:43:19,492 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:43:19,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.37 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 235.2 MB in the beginning and 338.6 MB in the end (delta: -103.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-26 10:43:19,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.37 ms. Allocated memory is still 375.4 MB. Free memory was 338.6 MB in the beginning and 336.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:43:19,493 INFO L168 Benchmark]: Boogie Preprocessor took 25.89 ms. Allocated memory is still 375.4 MB. Free memory was 336.9 MB in the beginning and 335.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:43:19,494 INFO L168 Benchmark]: RCFGBuilder took 384.51 ms. Allocated memory is still 375.4 MB. Free memory was 335.6 MB in the beginning and 354.0 MB in the end (delta: -18.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-26 10:43:19,494 INFO L168 Benchmark]: TraceAbstraction took 2220.35 ms. Allocated memory was 375.4 MB in the beginning and 459.3 MB in the end (delta: 83.9 MB). Free memory was 353.2 MB in the beginning and 263.8 MB in the end (delta: 89.4 MB). Peak memory consumption was 173.9 MB. Max. memory is 16.0 GB. [2021-03-26 10:43:19,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 359.37 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 235.2 MB in the beginning and 338.6 MB in the end (delta: -103.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.37 ms. Allocated memory is still 375.4 MB. Free memory was 338.6 MB in the beginning and 336.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.89 ms. Allocated memory is still 375.4 MB. Free memory was 336.9 MB in the beginning and 335.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 384.51 ms. Allocated memory is still 375.4 MB. Free memory was 335.6 MB in the beginning and 354.0 MB in the end (delta: -18.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2220.35 ms. Allocated memory was 375.4 MB in the beginning and 459.3 MB in the end (delta: 83.9 MB). Free memory was 353.2 MB in the beginning and 263.8 MB in the end (delta: 89.4 MB). Peak memory consumption was 173.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 802.4ms, 54 PlacesBefore, 23 PlacesAfterwards, 48 TransitionsBefore, 16 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 32 TotalNumberOfCompositions, 532 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 312, positive: 286, positive conditional: 286, positive unconditional: 0, negative: 26, negative conditional: 26, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 312, positive: 286, positive conditional: 0, positive unconditional: 286, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 312, positive: 286, positive conditional: 0, positive unconditional: 286, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 277, positive: 259, positive conditional: 0, positive unconditional: 259, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 277, positive: 259, positive conditional: 0, positive unconditional: 259, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 312, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 277, unknown conditional: 0, unknown unconditional: 277] , Statistics on independence cache: Total cache size (in pairs): 277, Positive cache size: 259, Positive conditional cache size: 0, Positive unconditional cache size: 259, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 290.5ms, 24 PlacesBefore, 21 PlacesAfterwards, 18 TransitionsBefore, 15 TransitionsAfterwards, 68 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 146 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 85, positive: 63, positive conditional: 63, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 85, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 85, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 23, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 23, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 25, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 85, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 23, unknown conditional: 0, unknown unconditional: 23] , Statistics on independence cache: Total cache size (in pairs): 300, Positive cache size: 277, Positive conditional cache size: 0, Positive unconditional cache size: 277, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 349.0ms, 23 PlacesBefore, 22 PlacesAfterwards, 17 TransitionsBefore, 16 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 48 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 20, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.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: 20, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 300, Positive cache size: 277, Positive conditional cache size: 0, Positive unconditional cache size: 277, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 63.4ms, 25 PlacesBefore, 24 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 26 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 42 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 38, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 38, positive: 28, positive conditional: 6, positive unconditional: 22, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 28, positive conditional: 6, positive unconditional: 22, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 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: 38, positive: 26, positive conditional: 6, positive unconditional: 20, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 303, Positive cache size: 279, Positive conditional cache size: 0, Positive unconditional cache size: 279, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 23 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: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 303, Positive cache size: 279, Positive conditional cache size: 0, Positive unconditional cache size: 279, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 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 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2141.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 153.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 861.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 2 SDslu, 3 SDs, 0 SdLazy, 27 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=3, InterpolantAutomatonStates: 15, 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: 15.0ms SsaConstructionTime, 98.5ms SatisfiabilityAnalysisTime, 173.7ms InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...