/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:27:30,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:27:30,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:27:30,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-10 21:27:30,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:27:30,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:27:30,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:27:30,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:27:30,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:27:30,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:27:30,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:27:30,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:27:30,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:27:30,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:27:30,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:27:30,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:27:30,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:27:30,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 21:27:30,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 21:27:30,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 21:27:30,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 21:27:30,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 21:27:30,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 21:27:30,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 21:27:30,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 21:27:30,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:27:30,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:27:30,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:27:30,220 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-SemanticLbe.epf [2021-06-10 21:27:30,233 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:27:30,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:27:30,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:27:30,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:27:30,234 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:27:30,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:27:30,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:27:30,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:27:30,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:27:30,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:27:30,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:27:30,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:27:30,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:27:30,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:27:30,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:27:30,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:27:30,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:27:30,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:27:30,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:27:30,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:27:30,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:27:30,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:27:30,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:27:30,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:27:30,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:27:30,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:27:30,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:27:30,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:27:30,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:27:30,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:27:30,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:27:30,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:27:30,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:27:30,464 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:27:30,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-06-10 21:27:30,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29cecdab0/4e583cb7393549209d0b61b7807db0e7/FLAG0cb5cdd7a [2021-06-10 21:27:30,924 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:27:30,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-06-10 21:27:30,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29cecdab0/4e583cb7393549209d0b61b7807db0e7/FLAG0cb5cdd7a [2021-06-10 21:27:30,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29cecdab0/4e583cb7393549209d0b61b7807db0e7 [2021-06-10 21:27:30,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:27:30,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:27:30,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:27:30,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:27:30,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:27:30,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:27:30" (1/1) ... [2021-06-10 21:27:30,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494c659f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:30, skipping insertion in model container [2021-06-10 21:27:30,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:27:30" (1/1) ... [2021-06-10 21:27:30,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:27:30,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:27:31,096 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i[949,962] [2021-06-10 21:27:31,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:27:31,229 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:27:31,237 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i[949,962] [2021-06-10 21:27:31,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:27:31,312 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:27:31,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31 WrapperNode [2021-06-10 21:27:31,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:27:31,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:27:31,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:27:31,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:27:31,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (1/1) ... [2021-06-10 21:27:31,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (1/1) ... [2021-06-10 21:27:31,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:27:31,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:27:31,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:27:31,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:27:31,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (1/1) ... [2021-06-10 21:27:31,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (1/1) ... [2021-06-10 21:27:31,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (1/1) ... [2021-06-10 21:27:31,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (1/1) ... [2021-06-10 21:27:31,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (1/1) ... [2021-06-10 21:27:31,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (1/1) ... [2021-06-10 21:27:31,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (1/1) ... [2021-06-10 21:27:31,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:27:31,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:27:31,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:27:31,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:27:31,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (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 [2021-06-10 21:27:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:27:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:27:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:27:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:27:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:27:31,434 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:27:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:27:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:27:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:27:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:27:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:27:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:27:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:27:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:27:31,436 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:27:31,705 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:27:31,705 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:27:31,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:27:31 BoogieIcfgContainer [2021-06-10 21:27:31,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:27:31,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:27:31,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:27:31,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:27:31,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:27:30" (1/3) ... [2021-06-10 21:27:31,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebda049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:27:31, skipping insertion in model container [2021-06-10 21:27:31,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:27:31" (2/3) ... [2021-06-10 21:27:31,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebda049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:27:31, skipping insertion in model container [2021-06-10 21:27:31,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:27:31" (3/3) ... [2021-06-10 21:27:31,711 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2021-06-10 21:27:31,714 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:27:31,720 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:27:31,720 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:27:31,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,745 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,745 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,745 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,745 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,750 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,750 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,750 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,751 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,751 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,751 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,751 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,751 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,753 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,754 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,758 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,758 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,762 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,762 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:27:31,764 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:27:31,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:27:31,800 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:27:31,800 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:27:31,800 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:27:31,800 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:27:31,800 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:27:31,800 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:27:31,800 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:27:31,800 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:27:31,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:27:31,853 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 21:27:31,854 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:27:31,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 21:27:31,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:27:31,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 21:27:31,867 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:27:31,877 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:27:31,880 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:27:31,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-06-10 21:27:31,900 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-06-10 21:27:31,901 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:27:31,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-06-10 21:27:31,903 INFO L151 LiptonReduction]: Number of co-enabled transitions 864 [2021-06-10 21:27:31,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:31,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:27:32,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:27:32,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:27:32,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:27:32,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:27:32,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:27:32,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:27:32,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:27:32,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:27:32,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:27:32,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:27:32,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:27:32,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:27:32,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:27:32,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:27:32,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,686 INFO L147 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size 1 [2021-06-10 21:27:32,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-06-10 21:27:32,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:27:32,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:27:32,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:27:32,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:32,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:32,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:33,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:33,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:33,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:33,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:27:33,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:33,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:27:33,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 21:27:33,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:33,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:27:33,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:33,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:27:33,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:27:33,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:33,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:33,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:33,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:33,769 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:27:33,955 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:27:34,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:27:34,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:27:34,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:27:34,038 INFO L163 LiptonReduction]: Checked pairs total: 1456 [2021-06-10 21:27:34,039 INFO L165 LiptonReduction]: Total number of compositions: 46 [2021-06-10 21:27:34,043 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2177 [2021-06-10 21:27:34,051 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-06-10 21:27:34,051 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:27:34,051 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:34,052 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:34,052 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:34,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1978511600, now seen corresponding path program 1 times [2021-06-10 21:27:34,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:34,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811693357] [2021-06-10 21:27:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:34,241 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:27:34,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:27:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:34,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811693357] [2021-06-10 21:27:34,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:34,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:27:34,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571780069] [2021-06-10 21:27:34,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:27:34,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:34,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:27:34,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:27:34,267 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 121 [2021-06-10 21:27:34,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2021-06-10 21:27:34,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:34,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 121 [2021-06-10 21:27:34,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:34,297 INFO L129 PetriNetUnfolder]: 46/136 cut-off events. [2021-06-10 21:27:34,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:27:34,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 136 events. 46/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 611 event pairs, 14 based on Foata normal form. 11/140 useless extension candidates. Maximal degree in co-relation 234. Up to 53 conditions per place. [2021-06-10 21:27:34,299 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 6 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2021-06-10 21:27:34,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 77 flow [2021-06-10 21:27:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:27:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:27:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2021-06-10 21:27:34,307 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7713498622589532 [2021-06-10 21:27:34,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2021-06-10 21:27:34,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2021-06-10 21:27:34,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:34,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2021-06-10 21:27:34,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2021-06-10 21:27:34,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-06-10 21:27:34,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-06-10 21:27:34,316 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 280 transitions. [2021-06-10 21:27:34,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 77 flow [2021-06-10 21:27:34,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:27:34,318 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2021-06-10 21:27:34,319 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2021-06-10 21:27:34,320 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-06-10 21:27:34,320 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2021-06-10 21:27:34,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2021-06-10 21:27:34,320 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:34,320 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:34,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:27:34,321 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:34,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:34,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1172163426, now seen corresponding path program 1 times [2021-06-10 21:27:34,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:34,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486264596] [2021-06-10 21:27:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:34,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,354 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:27:34,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:27:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:34,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486264596] [2021-06-10 21:27:34,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:34,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:27:34,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007718889] [2021-06-10 21:27:34,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:27:34,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:34,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:27:34,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:27:34,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 121 [2021-06-10 21:27:34,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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) [2021-06-10 21:27:34,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:34,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 121 [2021-06-10 21:27:34,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:34,396 INFO L129 PetriNetUnfolder]: 40/122 cut-off events. [2021-06-10 21:27:34,396 INFO L130 PetriNetUnfolder]: For 42/114 co-relation queries the response was YES. [2021-06-10 21:27:34,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 122 events. 40/122 cut-off events. For 42/114 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 506 event pairs, 3 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 338. Up to 50 conditions per place. [2021-06-10 21:27:34,398 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 10 selfloop transitions, 7 changer transitions 0/27 dead transitions. [2021-06-10 21:27:34,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 146 flow [2021-06-10 21:27:34,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:27:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:27:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-06-10 21:27:34,402 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7665289256198347 [2021-06-10 21:27:34,402 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-06-10 21:27:34,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-06-10 21:27:34,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:34,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-06-10 21:27:34,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 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) [2021-06-10 21:27:34,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,406 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,406 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 371 transitions. [2021-06-10 21:27:34,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 146 flow [2021-06-10 21:27:34,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:27:34,408 INFO L241 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2021-06-10 21:27:34,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2021-06-10 21:27:34,409 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2021-06-10 21:27:34,409 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2021-06-10 21:27:34,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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) [2021-06-10 21:27:34,409 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:34,409 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:34,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:27:34,409 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:34,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:34,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1204316750, now seen corresponding path program 1 times [2021-06-10 21:27:34,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:34,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043449235] [2021-06-10 21:27:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:34,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,469 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:27:34,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:27:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:34,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043449235] [2021-06-10 21:27:34,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:34,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:27:34,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157782733] [2021-06-10 21:27:34,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:27:34,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:34,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:27:34,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:27:34,481 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 121 [2021-06-10 21:27:34,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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) [2021-06-10 21:27:34,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:34,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 121 [2021-06-10 21:27:34,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:34,517 INFO L129 PetriNetUnfolder]: 34/111 cut-off events. [2021-06-10 21:27:34,518 INFO L130 PetriNetUnfolder]: For 104/146 co-relation queries the response was YES. [2021-06-10 21:27:34,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 111 events. 34/111 cut-off events. For 104/146 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 464 event pairs, 3 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 354. Up to 45 conditions per place. [2021-06-10 21:27:34,519 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 8 selfloop transitions, 14 changer transitions 0/32 dead transitions. [2021-06-10 21:27:34,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 212 flow [2021-06-10 21:27:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:27:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:27:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-06-10 21:27:34,520 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7706611570247934 [2021-06-10 21:27:34,520 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-06-10 21:27:34,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-06-10 21:27:34,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:34,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-06-10 21:27:34,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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) [2021-06-10 21:27:34,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,522 INFO L185 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 4 states and 373 transitions. [2021-06-10 21:27:34,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 212 flow [2021-06-10 21:27:34,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:27:34,523 INFO L241 Difference]: Finished difference. Result has 37 places, 32 transitions, 230 flow [2021-06-10 21:27:34,524 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2021-06-10 21:27:34,524 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-06-10 21:27:34,524 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 230 flow [2021-06-10 21:27:34,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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) [2021-06-10 21:27:34,524 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:34,524 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:34,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:27:34,524 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:34,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:34,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1320589396, now seen corresponding path program 1 times [2021-06-10 21:27:34,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:34,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878722395] [2021-06-10 21:27:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:34,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,547 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:27:34,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:27:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:34,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878722395] [2021-06-10 21:27:34,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:34,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:27:34,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358712764] [2021-06-10 21:27:34,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:27:34,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:34,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:27:34,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:27:34,557 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 121 [2021-06-10 21:27:34,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:27:34,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:34,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 121 [2021-06-10 21:27:34,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:34,575 INFO L129 PetriNetUnfolder]: 22/83 cut-off events. [2021-06-10 21:27:34,576 INFO L130 PetriNetUnfolder]: For 193/313 co-relation queries the response was YES. [2021-06-10 21:27:34,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 83 events. 22/83 cut-off events. For 193/313 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 304 event pairs, 0 based on Foata normal form. 11/92 useless extension candidates. Maximal degree in co-relation 326. Up to 30 conditions per place. [2021-06-10 21:27:34,576 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 14 selfloop transitions, 8 changer transitions 7/39 dead transitions. [2021-06-10 21:27:34,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 350 flow [2021-06-10 21:27:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:27:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:27:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2021-06-10 21:27:34,581 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7644628099173554 [2021-06-10 21:27:34,581 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2021-06-10 21:27:34,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2021-06-10 21:27:34,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:34,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2021-06-10 21:27:34,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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) [2021-06-10 21:27:34,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,583 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,583 INFO L185 Difference]: Start difference. First operand has 37 places, 32 transitions, 230 flow. Second operand 4 states and 370 transitions. [2021-06-10 21:27:34,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 350 flow [2021-06-10 21:27:34,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:27:34,586 INFO L241 Difference]: Finished difference. Result has 43 places, 31 transitions, 265 flow [2021-06-10 21:27:34,586 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2021-06-10 21:27:34,586 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-06-10 21:27:34,586 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 265 flow [2021-06-10 21:27:34,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:27:34,586 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:34,587 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:34,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:27:34,587 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:34,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1388678078, now seen corresponding path program 1 times [2021-06-10 21:27:34,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:34,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521822477] [2021-06-10 21:27:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:34,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:27:34,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,626 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:27:34,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:27:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:34,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521822477] [2021-06-10 21:27:34,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:34,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:27:34,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638474656] [2021-06-10 21:27:34,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:27:34,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:34,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:27:34,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:27:34,637 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 121 [2021-06-10 21:27:34,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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) [2021-06-10 21:27:34,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:34,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 121 [2021-06-10 21:27:34,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:34,661 INFO L129 PetriNetUnfolder]: 13/75 cut-off events. [2021-06-10 21:27:34,661 INFO L130 PetriNetUnfolder]: For 345/522 co-relation queries the response was YES. [2021-06-10 21:27:34,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 75 events. 13/75 cut-off events. For 345/522 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 311 event pairs, 0 based on Foata normal form. 16/89 useless extension candidates. Maximal degree in co-relation 329. Up to 28 conditions per place. [2021-06-10 21:27:34,662 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 9 selfloop transitions, 12 changer transitions 6/37 dead transitions. [2021-06-10 21:27:34,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 392 flow [2021-06-10 21:27:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:27:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:27:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-06-10 21:27:34,663 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.768595041322314 [2021-06-10 21:27:34,663 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-06-10 21:27:34,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-06-10 21:27:34,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:34,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-06-10 21:27:34,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-06-10 21:27:34,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,665 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,665 INFO L185 Difference]: Start difference. First operand has 43 places, 31 transitions, 265 flow. Second operand 4 states and 372 transitions. [2021-06-10 21:27:34,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 392 flow [2021-06-10 21:27:34,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 37 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:27:34,670 INFO L241 Difference]: Finished difference. Result has 48 places, 31 transitions, 330 flow [2021-06-10 21:27:34,671 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2021-06-10 21:27:34,671 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2021-06-10 21:27:34,671 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 330 flow [2021-06-10 21:27:34,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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) [2021-06-10 21:27:34,671 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:34,671 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:34,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:27:34,671 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:34,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:34,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2104565098, now seen corresponding path program 1 times [2021-06-10 21:27:34,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:34,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333727287] [2021-06-10 21:27:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:34,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,709 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:27:34,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:27:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:34,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333727287] [2021-06-10 21:27:34,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:34,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:27:34,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668040408] [2021-06-10 21:27:34,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:27:34,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:34,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:27:34,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:27:34,717 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 121 [2021-06-10 21:27:34,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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) [2021-06-10 21:27:34,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:34,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 121 [2021-06-10 21:27:34,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:34,756 INFO L129 PetriNetUnfolder]: 17/75 cut-off events. [2021-06-10 21:27:34,756 INFO L130 PetriNetUnfolder]: For 595/681 co-relation queries the response was YES. [2021-06-10 21:27:34,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 75 events. 17/75 cut-off events. For 595/681 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 274 event pairs, 0 based on Foata normal form. 11/86 useless extension candidates. Maximal degree in co-relation 366. Up to 23 conditions per place. [2021-06-10 21:27:34,757 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 14 selfloop transitions, 12 changer transitions 4/39 dead transitions. [2021-06-10 21:27:34,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 507 flow [2021-06-10 21:27:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:27:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:27:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2021-06-10 21:27:34,761 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7520661157024794 [2021-06-10 21:27:34,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2021-06-10 21:27:34,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2021-06-10 21:27:34,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:34,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2021-06-10 21:27:34,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2021-06-10 21:27:34,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:27:34,765 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:27:34,765 INFO L185 Difference]: Start difference. First operand has 48 places, 31 transitions, 330 flow. Second operand 5 states and 455 transitions. [2021-06-10 21:27:34,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 507 flow [2021-06-10 21:27:34,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 39 transitions, 500 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-06-10 21:27:34,768 INFO L241 Difference]: Finished difference. Result has 54 places, 34 transitions, 411 flow [2021-06-10 21:27:34,768 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2021-06-10 21:27:34,768 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2021-06-10 21:27:34,768 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 411 flow [2021-06-10 21:27:34,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 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) [2021-06-10 21:27:34,768 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:34,769 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:34,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:27:34,769 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:34,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:34,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1181065180, now seen corresponding path program 2 times [2021-06-10 21:27:34,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:34,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008397003] [2021-06-10 21:27:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:34,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,820 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:27:34,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:27:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:34,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008397003] [2021-06-10 21:27:34,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:34,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:27:34,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537429774] [2021-06-10 21:27:34,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:27:34,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:27:34,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:27:34,829 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 121 [2021-06-10 21:27:34,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2021-06-10 21:27:34,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:34,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 121 [2021-06-10 21:27:34,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:34,849 INFO L129 PetriNetUnfolder]: 9/61 cut-off events. [2021-06-10 21:27:34,849 INFO L130 PetriNetUnfolder]: For 727/803 co-relation queries the response was YES. [2021-06-10 21:27:34,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 61 events. 9/61 cut-off events. For 727/803 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 212 event pairs, 0 based on Foata normal form. 7/68 useless extension candidates. Maximal degree in co-relation 327. Up to 24 conditions per place. [2021-06-10 21:27:34,850 INFO L132 encePairwiseOnDemand]: 116/121 looper letters, 7 selfloop transitions, 6 changer transitions 13/35 dead transitions. [2021-06-10 21:27:34,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 35 transitions, 486 flow [2021-06-10 21:27:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:27:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:27:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2021-06-10 21:27:34,851 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7421487603305785 [2021-06-10 21:27:34,851 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2021-06-10 21:27:34,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2021-06-10 21:27:34,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:34,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2021-06-10 21:27:34,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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) [2021-06-10 21:27:34,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:27:34,853 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:27:34,853 INFO L185 Difference]: Start difference. First operand has 54 places, 34 transitions, 411 flow. Second operand 5 states and 449 transitions. [2021-06-10 21:27:34,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 35 transitions, 486 flow [2021-06-10 21:27:34,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 35 transitions, 466 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-06-10 21:27:34,856 INFO L241 Difference]: Finished difference. Result has 57 places, 22 transitions, 232 flow [2021-06-10 21:27:34,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=57, PETRI_TRANSITIONS=22} [2021-06-10 21:27:34,856 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2021-06-10 21:27:34,856 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 22 transitions, 232 flow [2021-06-10 21:27:34,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2021-06-10 21:27:34,856 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:34,856 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:34,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:27:34,857 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:34,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1079576046, now seen corresponding path program 1 times [2021-06-10 21:27:34,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:34,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252731616] [2021-06-10 21:27:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:34,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,885 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 21:27:34,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:27:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:34,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252731616] [2021-06-10 21:27:34,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:34,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:27:34,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347123360] [2021-06-10 21:27:34,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:27:34,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:27:34,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:27:34,899 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-06-10 21:27:34,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 22 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:27:34,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:34,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-06-10 21:27:34,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:34,931 INFO L129 PetriNetUnfolder]: 29/89 cut-off events. [2021-06-10 21:27:34,931 INFO L130 PetriNetUnfolder]: For 504/525 co-relation queries the response was YES. [2021-06-10 21:27:34,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 89 events. 29/89 cut-off events. For 504/525 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 339 event pairs, 2 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 298. Up to 34 conditions per place. [2021-06-10 21:27:34,933 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 7 selfloop transitions, 4 changer transitions 2/29 dead transitions. [2021-06-10 21:27:34,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 29 transitions, 272 flow [2021-06-10 21:27:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:27:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:27:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2021-06-10 21:27:34,934 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7582644628099173 [2021-06-10 21:27:34,934 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2021-06-10 21:27:34,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2021-06-10 21:27:34,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:34,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2021-06-10 21:27:34,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2021-06-10 21:27:34,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,936 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:27:34,936 INFO L185 Difference]: Start difference. First operand has 57 places, 22 transitions, 232 flow. Second operand 4 states and 367 transitions. [2021-06-10 21:27:34,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 29 transitions, 272 flow [2021-06-10 21:27:34,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 172 flow, removed 7 selfloop flow, removed 17 redundant places. [2021-06-10 21:27:34,938 INFO L241 Difference]: Finished difference. Result has 45 places, 25 transitions, 164 flow [2021-06-10 21:27:34,939 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2021-06-10 21:27:34,939 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2021-06-10 21:27:34,939 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 164 flow [2021-06-10 21:27:34,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:27:34,939 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:34,939 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:34,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:27:34,939 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:34,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:34,940 INFO L82 PathProgramCache]: Analyzing trace with hash 415006796, now seen corresponding path program 1 times [2021-06-10 21:27:34,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:34,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509274439] [2021-06-10 21:27:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:34,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:34,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:34,976 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 21:27:34,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:27:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:34,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509274439] [2021-06-10 21:27:34,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:34,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:27:34,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412941184] [2021-06-10 21:27:34,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:27:34,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:34,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:27:34,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:27:34,990 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-06-10 21:27:34,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:27:34,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:34,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-06-10 21:27:34,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:35,025 INFO L129 PetriNetUnfolder]: 17/73 cut-off events. [2021-06-10 21:27:35,025 INFO L130 PetriNetUnfolder]: For 130/223 co-relation queries the response was YES. [2021-06-10 21:27:35,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 73 events. 17/73 cut-off events. For 130/223 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 284 event pairs, 0 based on Foata normal form. 12/77 useless extension candidates. Maximal degree in co-relation 252. Up to 43 conditions per place. [2021-06-10 21:27:35,026 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 4 selfloop transitions, 6 changer transitions 6/32 dead transitions. [2021-06-10 21:27:35,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 225 flow [2021-06-10 21:27:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:27:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:27:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2021-06-10 21:27:35,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7570247933884298 [2021-06-10 21:27:35,028 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2021-06-10 21:27:35,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2021-06-10 21:27:35,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:35,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2021-06-10 21:27:35,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:27:35,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:27:35,030 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:27:35,030 INFO L185 Difference]: Start difference. First operand has 45 places, 25 transitions, 164 flow. Second operand 5 states and 458 transitions. [2021-06-10 21:27:35,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 225 flow [2021-06-10 21:27:35,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 32 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:27:35,031 INFO L241 Difference]: Finished difference. Result has 50 places, 26 transitions, 193 flow [2021-06-10 21:27:35,031 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=50, PETRI_TRANSITIONS=26} [2021-06-10 21:27:35,031 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2021-06-10 21:27:35,031 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 26 transitions, 193 flow [2021-06-10 21:27:35,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:27:35,031 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:27:35,032 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:27:35,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 21:27:35,032 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:27:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:27:35,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1317361557, now seen corresponding path program 1 times [2021-06-10 21:27:35,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:27:35,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715983925] [2021-06-10 21:27:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:27:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:27:35,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:35,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:35,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:35,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:35,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:27:35,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:27:35,080 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 21:27:35,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:27:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:27:35,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715983925] [2021-06-10 21:27:35,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:27:35,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:27:35,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717640724] [2021-06-10 21:27:35,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:27:35,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:27:35,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:27:35,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:27:35,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-06-10 21:27:35,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 26 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:27:35,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:27:35,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-06-10 21:27:35,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:27:35,128 INFO L129 PetriNetUnfolder]: 8/54 cut-off events. [2021-06-10 21:27:35,128 INFO L130 PetriNetUnfolder]: For 201/307 co-relation queries the response was YES. [2021-06-10 21:27:35,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 54 events. 8/54 cut-off events. For 201/307 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 214 event pairs, 0 based on Foata normal form. 12/63 useless extension candidates. Maximal degree in co-relation 226. Up to 27 conditions per place. [2021-06-10 21:27:35,129 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-06-10 21:27:35,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 26 transitions, 204 flow [2021-06-10 21:27:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:27:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:27:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 539 transitions. [2021-06-10 21:27:35,130 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7424242424242424 [2021-06-10 21:27:35,130 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 539 transitions. [2021-06-10 21:27:35,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 539 transitions. [2021-06-10 21:27:35,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:27:35,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 539 transitions. [2021-06-10 21:27:35,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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) [2021-06-10 21:27:35,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2021-06-10 21:27:35,132 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2021-06-10 21:27:35,132 INFO L185 Difference]: Start difference. First operand has 50 places, 26 transitions, 193 flow. Second operand 6 states and 539 transitions. [2021-06-10 21:27:35,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 26 transitions, 204 flow [2021-06-10 21:27:35,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 26 transitions, 187 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-06-10 21:27:35,133 INFO L241 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2021-06-10 21:27:35,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2021-06-10 21:27:35,133 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2021-06-10 21:27:35,133 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2021-06-10 21:27:35,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:27:35,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 21:27:35,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:27:35 BasicIcfg [2021-06-10 21:27:35,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:27:35,137 INFO L168 Benchmark]: Toolchain (without parser) took 4194.39 ms. Allocated memory was 341.8 MB in the beginning and 423.6 MB in the end (delta: 81.8 MB). Free memory was 304.6 MB in the beginning and 345.7 MB in the end (delta: -41.1 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.0 GB. [2021-06-10 21:27:35,137 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 341.8 MB. Free memory is still 322.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:27:35,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.81 ms. Allocated memory is still 341.8 MB. Free memory was 304.4 MB in the beginning and 304.6 MB in the end (delta: -128.8 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-06-10 21:27:35,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.84 ms. Allocated memory is still 341.8 MB. Free memory was 304.6 MB in the beginning and 302.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:27:35,138 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 341.8 MB. Free memory was 302.4 MB in the beginning and 301.4 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:27:35,138 INFO L168 Benchmark]: RCFGBuilder took 319.48 ms. Allocated memory is still 341.8 MB. Free memory was 301.4 MB in the beginning and 276.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 21:27:35,138 INFO L168 Benchmark]: TraceAbstraction took 3428.85 ms. Allocated memory was 341.8 MB in the beginning and 423.6 MB in the end (delta: 81.8 MB). Free memory was 276.2 MB in the beginning and 345.7 MB in the end (delta: -69.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.0 GB. [2021-06-10 21:27:35,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 341.8 MB. Free memory is still 322.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 370.81 ms. Allocated memory is still 341.8 MB. Free memory was 304.4 MB in the beginning and 304.6 MB in the end (delta: -128.8 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.84 ms. Allocated memory is still 341.8 MB. Free memory was 304.6 MB in the beginning and 302.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 341.8 MB. Free memory was 302.4 MB in the beginning and 301.4 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 319.48 ms. Allocated memory is still 341.8 MB. Free memory was 301.4 MB in the beginning and 276.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3428.85 ms. Allocated memory was 341.8 MB in the beginning and 423.6 MB in the end (delta: 81.8 MB). Free memory was 276.2 MB in the beginning and 345.7 MB in the end (delta: -69.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2159.6ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1456 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 929, positive: 857, positive conditional: 0, positive unconditional: 857, negative: 72, negative conditional: 0, negative unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 599, positive: 569, positive conditional: 0, positive unconditional: 569, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 599, positive: 569, positive conditional: 0, positive unconditional: 569, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 599, positive: 559, positive conditional: 0, positive unconditional: 559, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 132, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 104, negative conditional: 0, negative unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 929, positive: 288, positive conditional: 0, positive unconditional: 288, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 599, unknown conditional: 0, unknown unconditional: 599] , Statistics on independence cache: Total cache size (in pairs): 925, Positive cache size: 895, Positive conditional cache size: 0, Positive unconditional cache size: 895, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3338.7ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 417.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2246.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 35 SDslu, 25 SDs, 0 SdLazy, 104 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 136.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=411occurred in iteration=6, InterpolantAutomatonStates: 44, 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: 21.1ms SsaConstructionTime, 140.7ms SatisfiabilityAnalysisTime, 378.1ms InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 609 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...