/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/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:51:05,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:51:05,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:51:05,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:51:05,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:51:05,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:51:05,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:51:05,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:51:05,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:51:05,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:51:05,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:51:05,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:51:05,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:51:06,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:51:06,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:51:06,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:51:06,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:51:06,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:51:06,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:51:06,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:51:06,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:51:06,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:51:06,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:51:06,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:51:06,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 00:51:06,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 00:51:06,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 00:51:06,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 00:51:06,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 00:51:06,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 00:51:06,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 00:51:06,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 00:51:06,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 00:51:06,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 00:51:06,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 00:51:06,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 00:51:06,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 00:51:06,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 00:51:06,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:51:06,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:51:06,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:51:06,028 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 00:51:06,052 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:51:06,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:51:06,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:51:06,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:51:06,056 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:51:06,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:51:06,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:51:06,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:51:06,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:51:06,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:51:06,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:51:06,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:51:06,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:51:06,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:51:06,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:51:06,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:51:06,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:51:06,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:51:06,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:51:06,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:51:06,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:51:06,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:51:06,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:51:06,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:51:06,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:51:06,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:51:06,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:51:06,059 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:51:06,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:51:06,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:51:06,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:51:06,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:51:06,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:51:06,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:51:06,312 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:51:06,312 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:51:06,313 INFO L432 ainManager$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 00:51:06,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66c3311c/6243c2a10c1e4a4494687d455d450225/FLAG966d67d42 [2021-03-26 00:51:06,809 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:51:06,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2021-03-26 00:51:06,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66c3311c/6243c2a10c1e4a4494687d455d450225/FLAG966d67d42 [2021-03-26 00:51:06,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66c3311c/6243c2a10c1e4a4494687d455d450225 [2021-03-26 00:51:06,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:51:06,834 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:51:06,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:51:06,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:51:06,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:51:06,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:51:06" (1/1) ... [2021-03-26 00:51:06,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebfa73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:06, skipping insertion in model container [2021-03-26 00:51:06,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:51:06" (1/1) ... [2021-03-26 00:51:06,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:51:06,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:51:06,952 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 00:51:07,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:51:07,101 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:51:07,109 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 00:51:07,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:51:07,181 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:51:07,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07 WrapperNode [2021-03-26 00:51:07,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:51:07,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:51:07,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:51:07,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:51:07,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (1/1) ... [2021-03-26 00:51:07,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (1/1) ... [2021-03-26 00:51:07,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:51:07,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:51:07,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:51:07,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:51:07,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (1/1) ... [2021-03-26 00:51:07,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (1/1) ... [2021-03-26 00:51:07,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (1/1) ... [2021-03-26 00:51:07,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (1/1) ... [2021-03-26 00:51:07,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (1/1) ... [2021-03-26 00:51:07,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (1/1) ... [2021-03-26 00:51:07,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (1/1) ... [2021-03-26 00:51:07,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:51:07,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:51:07,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:51:07,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:51:07,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (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 00:51:07,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:51:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:51:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:51:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:51:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:51:07,301 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:51:07,301 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:51:07,301 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:51:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:51:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:51:07,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:51:07,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:51:07,303 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 00:51:07,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:51:07,561 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:51:07,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:51:07 BoogieIcfgContainer [2021-03-26 00:51:07,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:51:07,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:51:07,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:51:07,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:51:07,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:51:06" (1/3) ... [2021-03-26 00:51:07,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7679c0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:51:07, skipping insertion in model container [2021-03-26 00:51:07,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:51:07" (2/3) ... [2021-03-26 00:51:07,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7679c0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:51:07, skipping insertion in model container [2021-03-26 00:51:07,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:51:07" (3/3) ... [2021-03-26 00:51:07,567 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2021-03-26 00:51:07,571 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:51:07,576 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:51:07,576 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:51:07,596 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,597 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,597 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,597 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,597 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,599 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,599 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,599 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,599 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,604 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,608 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,608 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:51:07,610 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:51:07,622 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 00:51:07,644 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:51:07,645 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:51:07,645 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:51:07,645 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:51:07,645 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:51:07,645 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:51:07,645 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:51:07,646 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:51:07,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2021-03-26 00:51:07,687 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2021-03-26 00:51:07,687 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:07,691 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 00:51:07,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 60 transitions, 130 flow [2021-03-26 00:51:07,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 48 transitions, 102 flow [2021-03-26 00:51:07,701 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:07,712 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-26 00:51:07,715 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-26 00:51:07,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 48 transitions, 102 flow [2021-03-26 00:51:07,734 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-26 00:51:07,734 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:07,735 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 00:51:07,736 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-26 00:51:08,549 INFO L154 LiptonReduction]: Checked pairs total: 532 [2021-03-26 00:51:08,550 INFO L156 LiptonReduction]: Total number of compositions: 32 [2021-03-26 00:51:08,552 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 852 [2021-03-26 00:51:08,563 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 00:51:08,564 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:08,564 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:08,564 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:08,565 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:08,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1129834663, now seen corresponding path program 1 times [2021-03-26 00:51:08,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:08,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778623678] [2021-03-26 00:51:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:08,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:08,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:51:08,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:08,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:08,757 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 00:51:08,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778623678] [2021-03-26 00:51:08,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:08,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:51:08,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318443174] [2021-03-26 00:51:08,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:51:08,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:08,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:51:08,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:51:08,774 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 92 [2021-03-26 00:51:08,777 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 00:51:08,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:08,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 92 [2021-03-26 00:51:08,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:08,796 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2021-03-26 00:51:08,796 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:08,797 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 00:51:08,798 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 3 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2021-03-26 00:51:08,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 54 flow [2021-03-26 00:51:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:51:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:51:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2021-03-26 00:51:08,808 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8731884057971014 [2021-03-26 00:51:08,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2021-03-26 00:51:08,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2021-03-26 00:51:08,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:08,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2021-03-26 00:51:08,817 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 00:51:08,821 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 00:51:08,821 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 00:51:08,823 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 38 flow. Second operand 3 states and 241 transitions. [2021-03-26 00:51:08,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 54 flow [2021-03-26 00:51:08,825 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 00:51:08,826 INFO L241 Difference]: Finished difference. Result has 24 places, 18 transitions, 55 flow [2021-03-26 00:51:08,828 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 00:51:08,828 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2021-03-26 00:51:08,828 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:08,828 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 18 transitions, 55 flow [2021-03-26 00:51:08,829 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 18 transitions, 55 flow [2021-03-26 00:51:08,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 18 transitions, 55 flow [2021-03-26 00:51:08,832 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2021-03-26 00:51:08,832 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 00:51:08,832 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 00:51:08,833 INFO L142 LiptonReduction]: Number of co-enabled transitions 68 [2021-03-26 00:51:09,080 INFO L154 LiptonReduction]: Checked pairs total: 146 [2021-03-26 00:51:09,081 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:51:09,081 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 253 [2021-03-26 00:51:09,083 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 49 flow [2021-03-26 00:51:09,083 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 00:51:09,083 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:09,083 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:09,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:51:09,083 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:09,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:09,089 INFO L82 PathProgramCache]: Analyzing trace with hash -665136664, now seen corresponding path program 1 times [2021-03-26 00:51:09,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:09,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758139138] [2021-03-26 00:51:09,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:09,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:51:09,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:09,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:09,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:51:09,158 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 00:51:09,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758139138] [2021-03-26 00:51:09,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:09,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:51:09,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007797898] [2021-03-26 00:51:09,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:51:09,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:09,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:51:09,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:51:09,161 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2021-03-26 00:51:09,162 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 00:51:09,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:09,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2021-03-26 00:51:09,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:09,177 INFO L129 PetriNetUnfolder]: 7/30 cut-off events. [2021-03-26 00:51:09,177 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 00:51:09,177 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 00:51:09,177 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 3 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2021-03-26 00:51:09,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 65 flow [2021-03-26 00:51:09,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:51:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:51:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2021-03-26 00:51:09,179 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2021-03-26 00:51:09,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2021-03-26 00:51:09,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2021-03-26 00:51:09,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:09,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2021-03-26 00:51:09,180 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 00:51:09,181 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 00:51:09,181 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 00:51:09,181 INFO L185 Difference]: Start difference. First operand has 21 places, 15 transitions, 49 flow. Second operand 3 states and 220 transitions. [2021-03-26 00:51:09,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 65 flow [2021-03-26 00:51:09,181 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 00:51:09,182 INFO L241 Difference]: Finished difference. Result has 23 places, 17 transitions, 65 flow [2021-03-26 00:51:09,182 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 00:51:09,182 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2021-03-26 00:51:09,182 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:09,182 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 17 transitions, 65 flow [2021-03-26 00:51:09,183 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 17 transitions, 65 flow [2021-03-26 00:51:09,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 17 transitions, 65 flow [2021-03-26 00:51:09,186 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2021-03-26 00:51:09,186 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 00:51:09,186 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 69 event pairs, 3 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 00:51:09,187 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 00:51:09,303 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-03-26 00:51:09,510 INFO L154 LiptonReduction]: Checked pairs total: 34 [2021-03-26 00:51:09,510 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:51:09,511 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 329 [2021-03-26 00:51:09,511 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 63 flow [2021-03-26 00:51:09,512 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 00:51:09,512 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:09,512 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:09,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:51:09,512 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:09,513 INFO L82 PathProgramCache]: Analyzing trace with hash 948326889, now seen corresponding path program 1 times [2021-03-26 00:51:09,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:09,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619838320] [2021-03-26 00:51:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:09,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:51:09,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:09,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:09,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:51:09,553 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 00:51:09,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619838320] [2021-03-26 00:51:09,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:09,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:51:09,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275484721] [2021-03-26 00:51:09,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:51:09,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:09,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:51:09,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:51:09,557 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 96 [2021-03-26 00:51:09,558 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 00:51:09,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:09,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 96 [2021-03-26 00:51:09,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:09,572 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-26 00:51:09,572 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2021-03-26 00:51:09,573 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 00:51:09,573 INFO L132 encePairwiseOnDemand]: 92/96 looper letters, 1 selfloop transitions, 5 changer transitions 0/16 dead transitions. [2021-03-26 00:51:09,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 16 transitions, 75 flow [2021-03-26 00:51:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:51:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:51:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2021-03-26 00:51:09,578 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2021-03-26 00:51:09,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2021-03-26 00:51:09,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2021-03-26 00:51:09,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:09,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2021-03-26 00:51:09,580 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 00:51:09,582 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 00:51:09,582 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 00:51:09,583 INFO L185 Difference]: Start difference. First operand has 22 places, 16 transitions, 63 flow. Second operand 4 states and 315 transitions. [2021-03-26 00:51:09,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 16 transitions, 75 flow [2021-03-26 00:51:09,584 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 00:51:09,585 INFO L241 Difference]: Finished difference. Result has 25 places, 16 transitions, 74 flow [2021-03-26 00:51:09,585 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 00:51:09,585 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2021-03-26 00:51:09,585 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:09,585 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 16 transitions, 74 flow [2021-03-26 00:51:09,586 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 16 transitions, 74 flow [2021-03-26 00:51:09,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 16 transitions, 74 flow [2021-03-26 00:51:09,588 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2021-03-26 00:51:09,588 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-26 00:51:09,589 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 00:51:09,589 INFO L142 LiptonReduction]: Number of co-enabled transitions 26 [2021-03-26 00:51:09,645 INFO L154 LiptonReduction]: Checked pairs total: 42 [2021-03-26 00:51:09,646 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:51:09,646 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 61 [2021-03-26 00:51:09,646 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 72 flow [2021-03-26 00:51:09,647 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 00:51:09,647 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:51:09,647 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:51:09,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:51:09,647 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:51:09,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:51:09,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1050378126, now seen corresponding path program 1 times [2021-03-26 00:51:09,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:51:09,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672082109] [2021-03-26 00:51:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:51:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:51:09,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:51:09,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:51:09,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:51:09,680 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-26 00:51:09,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:51:09,685 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 00:51:09,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672082109] [2021-03-26 00:51:09,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:51:09,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:51:09,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256025961] [2021-03-26 00:51:09,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:51:09,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:51:09,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:51:09,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:51:09,687 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2021-03-26 00:51:09,687 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 00:51:09,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:51:09,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2021-03-26 00:51:09,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:51:09,714 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2021-03-26 00:51:09,715 INFO L130 PetriNetUnfolder]: For 26/29 co-relation queries the response was YES. [2021-03-26 00:51:09,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 25 events. 5/25 cut-off events. For 26/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 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 00:51:09,715 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2021-03-26 00:51:09,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 104 flow [2021-03-26 00:51:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:51:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:51:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2021-03-26 00:51:09,717 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7649484536082474 [2021-03-26 00:51:09,717 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2021-03-26 00:51:09,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2021-03-26 00:51:09,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:51:09,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2021-03-26 00:51:09,718 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 00:51:09,719 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 00:51:09,719 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 00:51:09,719 INFO L185 Difference]: Start difference. First operand has 24 places, 15 transitions, 72 flow. Second operand 5 states and 371 transitions. [2021-03-26 00:51:09,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 104 flow [2021-03-26 00:51:09,720 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 00:51:09,720 INFO L241 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2021-03-26 00:51:09,720 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 00:51:09,720 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2021-03-26 00:51:09,720 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:51:09,721 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 0 transitions, 0 flow [2021-03-26 00:51:09,721 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 0 transitions, 0 flow [2021-03-26 00:51:09,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:51:09,721 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:51:09,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:51:09,721 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 00:51:09,721 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:51:09,721 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:51:09,721 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:51:09,721 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 00:51:09,722 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:51:09,722 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 00:51:09,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:51:09,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:51:09 BasicIcfg [2021-03-26 00:51:09,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:51:09,727 INFO L168 Benchmark]: Toolchain (without parser) took 2892.70 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 233.5 MB in the beginning and 399.7 MB in the end (delta: -166.3 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.0 GB. [2021-03-26 00:51:09,727 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:51:09,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.10 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 233.5 MB in the beginning and 315.3 MB in the end (delta: -81.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-26 00:51:09,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.43 ms. Allocated memory is still 352.3 MB. Free memory was 315.3 MB in the beginning and 313.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:51:09,728 INFO L168 Benchmark]: Boogie Preprocessor took 24.47 ms. Allocated memory is still 352.3 MB. Free memory was 313.2 MB in the beginning and 312.6 MB in the end (delta: 676.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:51:09,728 INFO L168 Benchmark]: RCFGBuilder took 331.41 ms. Allocated memory is still 352.3 MB. Free memory was 312.6 MB in the beginning and 292.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-26 00:51:09,728 INFO L168 Benchmark]: TraceAbstraction took 2162.45 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 291.6 MB in the beginning and 399.7 MB in the end (delta: -108.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:51:09,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 347.10 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 233.5 MB in the beginning and 315.3 MB in the end (delta: -81.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.43 ms. Allocated memory is still 352.3 MB. Free memory was 315.3 MB in the beginning and 313.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.47 ms. Allocated memory is still 352.3 MB. Free memory was 313.2 MB in the beginning and 312.6 MB in the end (delta: 676.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 331.41 ms. Allocated memory is still 352.3 MB. Free memory was 312.6 MB in the beginning and 292.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2162.45 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 291.6 MB in the beginning and 399.7 MB in the end (delta: -108.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 834.9ms, 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: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.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: 58, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 312, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 277, unknown conditional: 277, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 11, Positive conditional cache size: 11, Positive unconditional cache size: 0, Negative cache size: 4, Negative conditional cache size: 4, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 252.1ms, 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: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 23, positive conditional: 2, positive unconditional: 21, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 29, positive: 23, positive conditional: 2, positive unconditional: 21, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 29, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 22, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 85, positive: 40, positive conditional: 40, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 29, unknown conditional: 29, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 21, Positive conditional cache size: 21, 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: 327.8ms, 23 PlacesBefore, 22 PlacesAfterwards, 17 TransitionsBefore, 16 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 34 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 3, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 3, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 26, positive: 15, positive conditional: 15, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 26, 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: 60.2ms, 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: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 32, positive conditional: 32, 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: 6, positive: 5, positive conditional: 3, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 5, positive conditional: 3, 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: 6, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 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] ], Cache Queries: [ total: 42, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 26, Positive conditional cache size: 26, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 3, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 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: 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): 29, Positive cache size: 26, Positive conditional cache size: 26, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 3, 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 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2081.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 145.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 912.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 2 SDslu, 3 SDs, 0 SdLazy, 27 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.1ms 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: 9.9ms SsaConstructionTime, 76.8ms SatisfiabilityAnalysisTime, 161.7ms 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...