/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:27:40,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:27:40,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:27:40,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:27:40,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:27:40,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:27:40,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:27:40,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:27:40,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:27:40,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:27:40,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:27:40,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:27:40,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:27:40,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:27:40,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:27:40,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:27:40,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:27:40,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:27:40,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:27:40,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:27:40,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:27:40,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:27:40,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:27:40,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:27:40,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:27:40,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:27:40,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:27:40,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:27:40,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:27:40,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:27:40,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:27:40,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:27:40,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:27:40,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:27:40,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:27:40,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:27:40,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:27:40,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:27:40,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:27:40,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:27:40,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:27:40,406 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-NoLbe.epf [2021-06-10 12:27:40,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:27:40,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:27:40,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:27:40,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:27:40,442 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:27:40,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:27:40,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:27:40,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:27:40,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:27:40,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:27:40,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:27:40,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:27:40,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:27:40,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:27:40,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:27:40,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:27:40,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:27:40,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:27:40,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:27:40,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:27:40,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:27:40,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:27:40,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:27:40,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:27:40,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:27:40,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:27:40,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:27:40,446 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:27:40,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:27:40,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:27:40,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:27:40,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:27:40,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:27:40,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:27:40,765 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:27:40,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2021-06-10 12:27:40,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c08cb67/44e299638f944ff5aa83c7d128d0e33b/FLAGc24a755fc [2021-06-10 12:27:41,197 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:27:41,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2021-06-10 12:27:41,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c08cb67/44e299638f944ff5aa83c7d128d0e33b/FLAGc24a755fc [2021-06-10 12:27:41,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c08cb67/44e299638f944ff5aa83c7d128d0e33b [2021-06-10 12:27:41,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:27:41,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:27:41,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:27:41,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:27:41,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:27:41,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:27:41" (1/1) ... [2021-06-10 12:27:41,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3cfa01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:41, skipping insertion in model container [2021-06-10 12:27:41,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:27:41" (1/1) ... [2021-06-10 12:27:41,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:27:41,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:27:41,754 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/safe020_pso.opt.i[949,962] [2021-06-10 12:27:41,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:27:41,942 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:27:41,952 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i[949,962] [2021-06-10 12:27:41,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:27:42,059 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:27:42,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42 WrapperNode [2021-06-10 12:27:42,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:27:42,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:27:42,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:27:42,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:27:42,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (1/1) ... [2021-06-10 12:27:42,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (1/1) ... [2021-06-10 12:27:42,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:27:42,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:27:42,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:27:42,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:27:42,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (1/1) ... [2021-06-10 12:27:42,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (1/1) ... [2021-06-10 12:27:42,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (1/1) ... [2021-06-10 12:27:42,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (1/1) ... [2021-06-10 12:27:42,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (1/1) ... [2021-06-10 12:27:42,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (1/1) ... [2021-06-10 12:27:42,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (1/1) ... [2021-06-10 12:27:42,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:27:42,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:27:42,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:27:42,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:27:42,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (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 12:27:42,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:27:42,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:27:42,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:27:42,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:27:42,237 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:27:42,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:27:42,237 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:27:42,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:27:42,238 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:27:42,238 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:27:42,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:27:42,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:27:42,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:27:42,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:27:42,240 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 12:27:42,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:27:42,640 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:27:42,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:27:42 BoogieIcfgContainer [2021-06-10 12:27:42,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:27:42,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:27:42,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:27:42,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:27:42,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:27:41" (1/3) ... [2021-06-10 12:27:42,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba16808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:27:42, skipping insertion in model container [2021-06-10 12:27:42,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:42" (2/3) ... [2021-06-10 12:27:42,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba16808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:27:42, skipping insertion in model container [2021-06-10 12:27:42,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:27:42" (3/3) ... [2021-06-10 12:27:42,649 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2021-06-10 12:27:42,657 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:27:42,661 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:27:42,662 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:27:42,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,702 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,703 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,703 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,703 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,703 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,703 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,704 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,704 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,704 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,704 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,705 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,706 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,706 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,706 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,707 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,708 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,708 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,708 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,710 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,710 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,710 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,711 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,711 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,711 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,714 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,714 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,714 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,714 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,722 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,723 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,726 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,726 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,726 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,726 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:42,728 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:27:42,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:27:42,776 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:27:42,777 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:27:42,777 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:27:42,777 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:27:42,777 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:27:42,777 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:27:42,777 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:27:42,778 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:27:42,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 12:27:42,835 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-06-10 12:27:42,836 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:42,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 12:27:42,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 12:27:42,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-06-10 12:27:42,876 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-06-10 12:27:42,876 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:42,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:42,877 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:42,877 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:42,883 INFO L82 PathProgramCache]: Analyzing trace with hash 593098047, now seen corresponding path program 1 times [2021-06-10 12:27:42,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:42,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236579614] [2021-06-10 12:27:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:43,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:43,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:43,191 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:43,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:43,204 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:43,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:43,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:43,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:43,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:43,252 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 12:27:43,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236579614] [2021-06-10 12:27:43,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:43,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:43,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339453398] [2021-06-10 12:27:43,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:43,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:43,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:43,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:43,276 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-06-10 12:27:43,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 57.285714285714285) internal successors, (401), 7 states have internal predecessors, (401), 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 12:27:43,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:43,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-06-10 12:27:43,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:43,542 INFO L129 PetriNetUnfolder]: 87/293 cut-off events. [2021-06-10 12:27:43,542 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:43,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 293 events. 87/293 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1355 event pairs, 10 based on Foata normal form. 14/296 useless extension candidates. Maximal degree in co-relation 459. Up to 60 conditions per place. [2021-06-10 12:27:43,546 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 16 selfloop transitions, 5 changer transitions 35/100 dead transitions. [2021-06-10 12:27:43,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 100 transitions, 321 flow [2021-06-10 12:27:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:27:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:27:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 790 transitions. [2021-06-10 12:27:43,561 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8324552160168599 [2021-06-10 12:27:43,562 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 790 transitions. [2021-06-10 12:27:43,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 790 transitions. [2021-06-10 12:27:43,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:43,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 790 transitions. [2021-06-10 12:27:43,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.76923076923077) internal successors, (790), 13 states have internal predecessors, (790), 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 12:27:43,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:27:43,581 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:27:43,583 INFO L185 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 13 states and 790 transitions. [2021-06-10 12:27:43,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 100 transitions, 321 flow [2021-06-10 12:27:43,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 318 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:27:43,591 INFO L241 Difference]: Finished difference. Result has 87 places, 59 transitions, 177 flow [2021-06-10 12:27:43,593 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=177, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2021-06-10 12:27:43,594 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2021-06-10 12:27:43,594 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 177 flow [2021-06-10 12:27:43,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.285714285714285) internal successors, (401), 7 states have internal predecessors, (401), 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 12:27:43,595 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:43,595 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:43,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:27:43,595 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:43,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:43,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1410206176, now seen corresponding path program 1 times [2021-06-10 12:27:43,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:43,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430051366] [2021-06-10 12:27:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:43,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:43,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:43,713 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:43,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:43,729 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:43,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:43,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:43,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:43,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:43,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:43,778 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 12:27:43,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430051366] [2021-06-10 12:27:43,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:43,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:43,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235389247] [2021-06-10 12:27:43,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:43,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:43,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:43,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:43,784 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-06-10 12:27:43,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 12:27:43,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:43,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-06-10 12:27:43,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:44,063 INFO L129 PetriNetUnfolder]: 51/237 cut-off events. [2021-06-10 12:27:44,064 INFO L130 PetriNetUnfolder]: For 420/489 co-relation queries the response was YES. [2021-06-10 12:27:44,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 237 events. 51/237 cut-off events. For 420/489 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1078 event pairs, 11 based on Foata normal form. 9/241 useless extension candidates. Maximal degree in co-relation 626. Up to 48 conditions per place. [2021-06-10 12:27:44,070 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 14 selfloop transitions, 7 changer transitions 28/93 dead transitions. [2021-06-10 12:27:44,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 491 flow [2021-06-10 12:27:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:27:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:27:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 780 transitions. [2021-06-10 12:27:44,073 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.821917808219178 [2021-06-10 12:27:44,073 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 780 transitions. [2021-06-10 12:27:44,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 780 transitions. [2021-06-10 12:27:44,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:44,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 780 transitions. [2021-06-10 12:27:44,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 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 12:27:44,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:27:44,079 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:27:44,079 INFO L185 Difference]: Start difference. First operand has 87 places, 59 transitions, 177 flow. Second operand 13 states and 780 transitions. [2021-06-10 12:27:44,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 93 transitions, 491 flow [2021-06-10 12:27:44,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 413 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-06-10 12:27:44,088 INFO L241 Difference]: Finished difference. Result has 92 places, 60 transitions, 197 flow [2021-06-10 12:27:44,088 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=197, PETRI_PLACES=92, PETRI_TRANSITIONS=60} [2021-06-10 12:27:44,089 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2021-06-10 12:27:44,089 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 60 transitions, 197 flow [2021-06-10 12:27:44,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 12:27:44,090 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:44,090 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:44,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:27:44,090 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:44,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:44,091 INFO L82 PathProgramCache]: Analyzing trace with hash 638485887, now seen corresponding path program 1 times [2021-06-10 12:27:44,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:44,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245560344] [2021-06-10 12:27:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:44,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:44,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:44,217 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:44,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:44,227 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:44,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:44,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:44,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:44,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:44,265 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 12:27:44,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245560344] [2021-06-10 12:27:44,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:44,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:44,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061647844] [2021-06-10 12:27:44,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:44,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:44,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:44,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:44,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-06-10 12:27:44,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 60 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 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 12:27:44,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:44,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-06-10 12:27:44,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:44,623 INFO L129 PetriNetUnfolder]: 153/488 cut-off events. [2021-06-10 12:27:44,625 INFO L130 PetriNetUnfolder]: For 1059/1246 co-relation queries the response was YES. [2021-06-10 12:27:44,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 488 events. 153/488 cut-off events. For 1059/1246 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2827 event pairs, 10 based on Foata normal form. 12/492 useless extension candidates. Maximal degree in co-relation 1368. Up to 76 conditions per place. [2021-06-10 12:27:44,631 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 30 selfloop transitions, 17 changer transitions 44/133 dead transitions. [2021-06-10 12:27:44,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 133 transitions, 874 flow [2021-06-10 12:27:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-10 12:27:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-10 12:27:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1000 transitions. [2021-06-10 12:27:44,640 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8058017727639001 [2021-06-10 12:27:44,640 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1000 transitions. [2021-06-10 12:27:44,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1000 transitions. [2021-06-10 12:27:44,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:44,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1000 transitions. [2021-06-10 12:27:44,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.8235294117647) internal successors, (1000), 17 states have internal predecessors, (1000), 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 12:27:44,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 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 12:27:44,646 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 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 12:27:44,646 INFO L185 Difference]: Start difference. First operand has 92 places, 60 transitions, 197 flow. Second operand 17 states and 1000 transitions. [2021-06-10 12:27:44,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 133 transitions, 874 flow [2021-06-10 12:27:44,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 133 transitions, 705 flow, removed 69 selfloop flow, removed 10 redundant places. [2021-06-10 12:27:44,655 INFO L241 Difference]: Finished difference. Result has 105 places, 72 transitions, 367 flow [2021-06-10 12:27:44,655 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=367, PETRI_PLACES=105, PETRI_TRANSITIONS=72} [2021-06-10 12:27:44,656 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 38 predicate places. [2021-06-10 12:27:44,656 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 72 transitions, 367 flow [2021-06-10 12:27:44,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 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 12:27:44,656 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:44,656 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:44,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:27:44,656 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:44,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:44,658 INFO L82 PathProgramCache]: Analyzing trace with hash 36889953, now seen corresponding path program 2 times [2021-06-10 12:27:44,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:44,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991517570] [2021-06-10 12:27:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:44,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:44,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:44,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:44,751 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:44,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:44,764 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:44,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:44,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:44,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:44,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:44,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:44,805 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 12:27:44,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991517570] [2021-06-10 12:27:44,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:44,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:44,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161483189] [2021-06-10 12:27:44,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:44,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:44,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:44,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:44,810 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-06-10 12:27:44,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 72 transitions, 367 flow. Second operand has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 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 12:27:44,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:44,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-06-10 12:27:44,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:44,998 INFO L129 PetriNetUnfolder]: 103/366 cut-off events. [2021-06-10 12:27:44,998 INFO L130 PetriNetUnfolder]: For 3256/3711 co-relation queries the response was YES. [2021-06-10 12:27:45,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1640 conditions, 366 events. 103/366 cut-off events. For 3256/3711 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1891 event pairs, 5 based on Foata normal form. 15/374 useless extension candidates. Maximal degree in co-relation 1584. Up to 71 conditions per place. [2021-06-10 12:27:45,002 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 18 selfloop transitions, 10 changer transitions 46/116 dead transitions. [2021-06-10 12:27:45,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 116 transitions, 1044 flow [2021-06-10 12:27:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:27:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:27:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2021-06-10 12:27:45,005 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8057285180572852 [2021-06-10 12:27:45,005 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2021-06-10 12:27:45,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2021-06-10 12:27:45,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:45,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2021-06-10 12:27:45,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.81818181818182) internal successors, (647), 11 states have internal predecessors, (647), 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 12:27:45,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 12:27:45,009 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 12:27:45,009 INFO L185 Difference]: Start difference. First operand has 105 places, 72 transitions, 367 flow. Second operand 11 states and 647 transitions. [2021-06-10 12:27:45,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 116 transitions, 1044 flow [2021-06-10 12:27:45,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 842 flow, removed 101 selfloop flow, removed 9 redundant places. [2021-06-10 12:27:45,017 INFO L241 Difference]: Finished difference. Result has 102 places, 64 transitions, 285 flow [2021-06-10 12:27:45,018 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=285, PETRI_PLACES=102, PETRI_TRANSITIONS=64} [2021-06-10 12:27:45,018 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 35 predicate places. [2021-06-10 12:27:45,018 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 64 transitions, 285 flow [2021-06-10 12:27:45,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 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 12:27:45,018 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:45,018 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:45,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:27:45,019 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:45,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1270770368, now seen corresponding path program 1 times [2021-06-10 12:27:45,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:45,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239189040] [2021-06-10 12:27:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:45,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:45,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:45,058 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:45,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:45,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:45,081 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:45,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:45,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:45,090 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 12:27:45,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239189040] [2021-06-10 12:27:45,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:45,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:27:45,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576435949] [2021-06-10 12:27:45,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:27:45,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:45,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:27:45,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:27:45,092 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-06-10 12:27:45,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 64 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 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 12:27:45,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:45,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-06-10 12:27:45,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:45,292 INFO L129 PetriNetUnfolder]: 303/784 cut-off events. [2021-06-10 12:27:45,293 INFO L130 PetriNetUnfolder]: For 757/790 co-relation queries the response was YES. [2021-06-10 12:27:45,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 784 events. 303/784 cut-off events. For 757/790 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5233 event pairs, 40 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 1721. Up to 212 conditions per place. [2021-06-10 12:27:45,300 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 24 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2021-06-10 12:27:45,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 427 flow [2021-06-10 12:27:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:27:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:27:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2021-06-10 12:27:45,303 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8671232876712329 [2021-06-10 12:27:45,303 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 633 transitions. [2021-06-10 12:27:45,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 633 transitions. [2021-06-10 12:27:45,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:45,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 633 transitions. [2021-06-10 12:27:45,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 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 12:27:45,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 12:27:45,307 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 12:27:45,308 INFO L185 Difference]: Start difference. First operand has 102 places, 64 transitions, 285 flow. Second operand 10 states and 633 transitions. [2021-06-10 12:27:45,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 427 flow [2021-06-10 12:27:45,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 94 transitions, 368 flow, removed 11 selfloop flow, removed 14 redundant places. [2021-06-10 12:27:45,312 INFO L241 Difference]: Finished difference. Result has 97 places, 79 transitions, 346 flow [2021-06-10 12:27:45,312 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=97, PETRI_TRANSITIONS=79} [2021-06-10 12:27:45,312 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 30 predicate places. [2021-06-10 12:27:45,313 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 79 transitions, 346 flow [2021-06-10 12:27:45,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 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 12:27:45,313 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:45,313 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:45,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:27:45,313 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:45,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:45,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1336245416, now seen corresponding path program 1 times [2021-06-10 12:27:45,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:45,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689599184] [2021-06-10 12:27:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:45,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:45,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:45,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:45,357 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:45,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:45,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:45,382 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:45,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:45,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:45,393 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 12:27:45,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689599184] [2021-06-10 12:27:45,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:45,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:45,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953849338] [2021-06-10 12:27:45,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:45,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:45,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:45,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:45,395 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-06-10 12:27:45,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 79 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 12:27:45,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:45,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-06-10 12:27:45,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:45,642 INFO L129 PetriNetUnfolder]: 288/790 cut-off events. [2021-06-10 12:27:45,643 INFO L130 PetriNetUnfolder]: For 1707/2043 co-relation queries the response was YES. [2021-06-10 12:27:45,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 790 events. 288/790 cut-off events. For 1707/2043 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5623 event pairs, 1 based on Foata normal form. 79/812 useless extension candidates. Maximal degree in co-relation 2644. Up to 306 conditions per place. [2021-06-10 12:27:45,649 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 20 selfloop transitions, 32 changer transitions 9/114 dead transitions. [2021-06-10 12:27:45,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 114 transitions, 692 flow [2021-06-10 12:27:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:27:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:27:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 824 transitions. [2021-06-10 12:27:45,652 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8682824025289779 [2021-06-10 12:27:45,652 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 824 transitions. [2021-06-10 12:27:45,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 824 transitions. [2021-06-10 12:27:45,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:45,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 824 transitions. [2021-06-10 12:27:45,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.38461538461539) internal successors, (824), 13 states have internal predecessors, (824), 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 12:27:45,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:27:45,656 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:27:45,656 INFO L185 Difference]: Start difference. First operand has 97 places, 79 transitions, 346 flow. Second operand 13 states and 824 transitions. [2021-06-10 12:27:45,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 114 transitions, 692 flow [2021-06-10 12:27:45,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 114 transitions, 683 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-10 12:27:45,662 INFO L241 Difference]: Finished difference. Result has 111 places, 99 transitions, 580 flow [2021-06-10 12:27:45,662 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=580, PETRI_PLACES=111, PETRI_TRANSITIONS=99} [2021-06-10 12:27:45,663 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 44 predicate places. [2021-06-10 12:27:45,663 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 99 transitions, 580 flow [2021-06-10 12:27:45,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 12:27:45,663 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:45,663 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:45,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:27:45,663 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:45,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:45,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2145662813, now seen corresponding path program 1 times [2021-06-10 12:27:45,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:45,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7906438] [2021-06-10 12:27:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:45,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:45,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:45,699 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:45,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:45,707 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:45,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:45,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:45,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:45,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:45,743 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 12:27:45,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7906438] [2021-06-10 12:27:45,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:45,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:45,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826981380] [2021-06-10 12:27:45,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:45,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:45,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:45,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:45,745 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-06-10 12:27:45,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 99 transitions, 580 flow. Second operand has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 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 12:27:45,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:45,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-06-10 12:27:45,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:45,915 INFO L129 PetriNetUnfolder]: 171/720 cut-off events. [2021-06-10 12:27:45,916 INFO L130 PetriNetUnfolder]: For 1981/2142 co-relation queries the response was YES. [2021-06-10 12:27:45,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2363 conditions, 720 events. 171/720 cut-off events. For 1981/2142 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5557 event pairs, 0 based on Foata normal form. 15/695 useless extension candidates. Maximal degree in co-relation 2340. Up to 201 conditions per place. [2021-06-10 12:27:45,922 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 18 selfloop transitions, 11 changer transitions 11/113 dead transitions. [2021-06-10 12:27:45,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 730 flow [2021-06-10 12:27:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:27:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:27:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2021-06-10 12:27:45,924 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.797945205479452 [2021-06-10 12:27:45,924 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2021-06-10 12:27:45,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2021-06-10 12:27:45,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:45,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2021-06-10 12:27:45,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 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 12:27:45,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 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 12:27:45,927 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 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 12:27:45,928 INFO L185 Difference]: Start difference. First operand has 111 places, 99 transitions, 580 flow. Second operand 8 states and 466 transitions. [2021-06-10 12:27:45,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 730 flow [2021-06-10 12:27:45,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 616 flow, removed 44 selfloop flow, removed 6 redundant places. [2021-06-10 12:27:45,944 INFO L241 Difference]: Finished difference. Result has 117 places, 98 transitions, 525 flow [2021-06-10 12:27:45,944 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2021-06-10 12:27:45,945 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 50 predicate places. [2021-06-10 12:27:45,945 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 525 flow [2021-06-10 12:27:45,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 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 12:27:45,945 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:45,945 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:45,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:27:45,945 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1430365889, now seen corresponding path program 2 times [2021-06-10 12:27:45,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:45,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983709865] [2021-06-10 12:27:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:45,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:45,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:45,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:45,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:45,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:45,989 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:45,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:46,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:46,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:46,014 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:46,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:46,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:46,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:46,024 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 12:27:46,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983709865] [2021-06-10 12:27:46,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:46,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:46,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168258092] [2021-06-10 12:27:46,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:46,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:46,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:46,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:46,026 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-06-10 12:27:46,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 12:27:46,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:46,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-06-10 12:27:46,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:46,324 INFO L129 PetriNetUnfolder]: 230/707 cut-off events. [2021-06-10 12:27:46,324 INFO L130 PetriNetUnfolder]: For 1093/1669 co-relation queries the response was YES. [2021-06-10 12:27:46,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 707 events. 230/707 cut-off events. For 1093/1669 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5537 event pairs, 0 based on Foata normal form. 92/734 useless extension candidates. Maximal degree in co-relation 2147. Up to 126 conditions per place. [2021-06-10 12:27:46,329 INFO L132 encePairwiseOnDemand]: 65/73 looper letters, 0 selfloop transitions, 0 changer transitions 104/104 dead transitions. [2021-06-10 12:27:46,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 104 transitions, 652 flow [2021-06-10 12:27:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-10 12:27:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-10 12:27:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 932 transitions. [2021-06-10 12:27:46,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8511415525114155 [2021-06-10 12:27:46,332 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 932 transitions. [2021-06-10 12:27:46,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 932 transitions. [2021-06-10 12:27:46,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:46,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 932 transitions. [2021-06-10 12:27:46,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 62.13333333333333) internal successors, (932), 15 states have internal predecessors, (932), 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 12:27:46,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 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 12:27:46,337 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 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 12:27:46,337 INFO L185 Difference]: Start difference. First operand has 117 places, 98 transitions, 525 flow. Second operand 15 states and 932 transitions. [2021-06-10 12:27:46,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 104 transitions, 652 flow [2021-06-10 12:27:46,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 104 transitions, 589 flow, removed 14 selfloop flow, removed 11 redundant places. [2021-06-10 12:27:46,345 INFO L241 Difference]: Finished difference. Result has 110 places, 0 transitions, 0 flow [2021-06-10 12:27:46,345 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=110, PETRI_TRANSITIONS=0} [2021-06-10 12:27:46,345 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 43 predicate places. [2021-06-10 12:27:46,345 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 0 transitions, 0 flow [2021-06-10 12:27:46,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 12:27:46,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:27:46,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:27:46 BasicIcfg [2021-06-10 12:27:46,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:27:46,351 INFO L168 Benchmark]: Toolchain (without parser) took 4795.88 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 310.4 MB in the beginning and 364.9 MB in the end (delta: -54.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:46,351 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 348.1 MB. Free memory is still 328.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:27:46,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.46 ms. Allocated memory is still 348.1 MB. Free memory was 310.1 MB in the beginning and 309.9 MB in the end (delta: 218.6 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:46,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.76 ms. Allocated memory is still 348.1 MB. Free memory was 308.8 MB in the beginning and 307.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:27:46,352 INFO L168 Benchmark]: Boogie Preprocessor took 31.27 ms. Allocated memory is still 348.1 MB. Free memory was 307.8 MB in the beginning and 305.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:46,352 INFO L168 Benchmark]: RCFGBuilder took 488.44 ms. Allocated memory is still 348.1 MB. Free memory was 305.7 MB in the beginning and 282.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:46,353 INFO L168 Benchmark]: TraceAbstraction took 3706.49 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 281.6 MB in the beginning and 364.9 MB in the end (delta: -83.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:27:46,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 348.1 MB. Free memory is still 328.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 494.46 ms. Allocated memory is still 348.1 MB. Free memory was 310.1 MB in the beginning and 309.9 MB in the end (delta: 218.6 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.76 ms. Allocated memory is still 348.1 MB. Free memory was 308.8 MB in the beginning and 307.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.27 ms. Allocated memory is still 348.1 MB. Free memory was 307.8 MB in the beginning and 305.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 488.44 ms. Allocated memory is still 348.1 MB. Free memory was 305.7 MB in the beginning and 282.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3706.49 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 281.6 MB in the beginning and 364.9 MB in the end (delta: -83.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 22.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3574.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2241.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 76.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 120 SDtfs, 337 SDslu, 404 SDs, 0 SdLazy, 425 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 341.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1245.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=580occurred in iteration=6, InterpolantAutomatonStates: 100, 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: 25.0ms SsaConstructionTime, 176.3ms SatisfiabilityAnalysisTime, 823.2ms InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 345 ConstructedInterpolants, 0 QuantifiedInterpolants, 1365 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...