/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/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:29:54,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:29:54,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:29:54,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:29:54,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:29:54,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:29:54,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:29:54,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:29:54,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:29:54,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:29:54,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:29:54,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:29:54,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:29:54,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:29:54,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:29:54,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:29:54,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:29:54,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:29:54,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:29:54,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:29:54,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:29:54,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:29:54,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:29:54,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:29:54,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:29:54,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:29:54,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:29:54,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:29:54,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:29:54,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:29:54,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:29:54,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:29:54,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:29:54,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:29:54,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:29:54,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:29:54,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:29:54,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:29:54,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:29:54,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:29:54,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:29:54,722 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 12:29:54,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:29:54,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:29:54,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:29:54,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:29:54,752 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:29:54,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:29:54,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:29:54,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:29:54,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:29:54,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:29:54,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:29:54,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:29:54,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:29:54,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:29:54,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:29:54,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:29:54,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:29:54,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:29:54,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:29:54,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:29:54,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:29:54,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:29:54,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:29:54,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:29:54,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:29:54,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:29:54,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:29:54,755 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:29:54,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:29:54,755 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:29:54,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:29:55,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:29:55,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:29:55,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:29:55,009 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:29:55,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2021-06-10 12:29:55,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca93bdf37/0dd884a87c2443c49b92dd3825721f11/FLAG4e922358c [2021-06-10 12:29:55,380 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:29:55,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2021-06-10 12:29:55,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca93bdf37/0dd884a87c2443c49b92dd3825721f11/FLAG4e922358c [2021-06-10 12:29:55,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca93bdf37/0dd884a87c2443c49b92dd3825721f11 [2021-06-10 12:29:55,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:29:55,796 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:29:55,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:29:55,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:29:55,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:29:55,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:29:55" (1/1) ... [2021-06-10 12:29:55,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9c2d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:55, skipping insertion in model container [2021-06-10 12:29:55,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:29:55" (1/1) ... [2021-06-10 12:29:55,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:29:55,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:29:55,947 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/safe029_tso.opt.i[949,962] [2021-06-10 12:29:56,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:29:56,099 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:29:56,107 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/safe029_tso.opt.i[949,962] [2021-06-10 12:29:56,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:29:56,178 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:29:56,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56 WrapperNode [2021-06-10 12:29:56,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:29:56,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:29:56,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:29:56,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:29:56,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (1/1) ... [2021-06-10 12:29:56,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (1/1) ... [2021-06-10 12:29:56,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:29:56,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:29:56,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:29:56,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:29:56,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (1/1) ... [2021-06-10 12:29:56,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (1/1) ... [2021-06-10 12:29:56,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (1/1) ... [2021-06-10 12:29:56,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (1/1) ... [2021-06-10 12:29:56,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (1/1) ... [2021-06-10 12:29:56,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (1/1) ... [2021-06-10 12:29:56,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (1/1) ... [2021-06-10 12:29:56,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:29:56,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:29:56,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:29:56,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:29:56,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (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 12:29:56,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:29:56,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:29:56,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:29:56,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:29:56,262 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:29:56,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:29:56,263 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:29:56,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:29:56,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:29:56,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:29:56,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:29:56,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:29:56,265 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 12:29:56,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:29:56,495 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:29:56,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:29:56 BoogieIcfgContainer [2021-06-10 12:29:56,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:29:56,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:29:56,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:29:56,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:29:56,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:29:55" (1/3) ... [2021-06-10 12:29:56,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693e2134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:29:56, skipping insertion in model container [2021-06-10 12:29:56,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:56" (2/3) ... [2021-06-10 12:29:56,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693e2134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:29:56, skipping insertion in model container [2021-06-10 12:29:56,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:29:56" (3/3) ... [2021-06-10 12:29:56,501 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2021-06-10 12:29:56,504 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:29:56,507 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:29:56,507 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:29:56,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,522 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,524 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,524 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,524 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,525 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,525 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,525 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,533 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:56,535 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:29:56,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-10 12:29:56,560 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:29:56,560 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:29:56,560 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:29:56,560 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:29:56,560 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:29:56,560 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:29:56,560 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:29:56,561 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:29:56,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 128 flow [2021-06-10 12:29:56,587 INFO L129 PetriNetUnfolder]: 2/57 cut-off events. [2021-06-10 12:29:56,587 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:29:56,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-06-10 12:29:56,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 59 transitions, 128 flow [2021-06-10 12:29:56,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 47 transitions, 100 flow [2021-06-10 12:29:56,600 INFO L129 PetriNetUnfolder]: 1/46 cut-off events. [2021-06-10 12:29:56,601 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:29:56,601 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:56,601 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] [2021-06-10 12:29:56,602 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:56,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1254159269, now seen corresponding path program 1 times [2021-06-10 12:29:56,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:56,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259601130] [2021-06-10 12:29:56,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:56,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:56,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:56,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:56,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:56,827 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:29:56,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:29:56,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:56,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:56,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:56,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:56,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:56,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:56,890 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 12:29:56,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259601130] [2021-06-10 12:29:56,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:56,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:29:56,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761623625] [2021-06-10 12:29:56,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:29:56,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:56,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:29:56,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:29:56,912 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 59 [2021-06-10 12:29:56,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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 12:29:56,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:56,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 59 [2021-06-10 12:29:56,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:57,112 INFO L129 PetriNetUnfolder]: 24/123 cut-off events. [2021-06-10 12:29:57,112 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:29:57,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 123 events. 24/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 424 event pairs, 5 based on Foata normal form. 6/126 useless extension candidates. Maximal degree in co-relation 166. Up to 31 conditions per place. [2021-06-10 12:29:57,114 INFO L132 encePairwiseOnDemand]: 51/59 looper letters, 8 selfloop transitions, 3 changer transitions 19/67 dead transitions. [2021-06-10 12:29:57,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 200 flow [2021-06-10 12:29:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:29:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:29:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 448 transitions. [2021-06-10 12:29:57,125 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8436911487758946 [2021-06-10 12:29:57,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 448 transitions. [2021-06-10 12:29:57,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 448 transitions. [2021-06-10 12:29:57,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:57,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 448 transitions. [2021-06-10 12:29:57,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 49.77777777777778) internal successors, (448), 9 states have internal predecessors, (448), 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 12:29:57,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:57,137 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:57,138 INFO L185 Difference]: Start difference. First operand has 53 places, 47 transitions, 100 flow. Second operand 9 states and 448 transitions. [2021-06-10 12:29:57,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 200 flow [2021-06-10 12:29:57,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 12:29:57,143 INFO L241 Difference]: Finished difference. Result has 66 places, 48 transitions, 139 flow [2021-06-10 12:29:57,144 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=139, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2021-06-10 12:29:57,145 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2021-06-10 12:29:57,145 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 139 flow [2021-06-10 12:29:57,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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 12:29:57,145 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:57,146 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] [2021-06-10 12:29:57,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:29:57,146 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:57,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2129773668, now seen corresponding path program 1 times [2021-06-10 12:29:57,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:57,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644173847] [2021-06-10 12:29:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:57,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:57,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:57,224 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:29:57,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:29:57,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:57,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:57,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:57,277 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 12:29:57,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644173847] [2021-06-10 12:29:57,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:57,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:29:57,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035862307] [2021-06-10 12:29:57,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:29:57,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:57,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:29:57,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:29:57,280 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 59 [2021-06-10 12:29:57,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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 12:29:57,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:57,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 59 [2021-06-10 12:29:57,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:57,408 INFO L129 PetriNetUnfolder]: 48/186 cut-off events. [2021-06-10 12:29:57,408 INFO L130 PetriNetUnfolder]: For 175/183 co-relation queries the response was YES. [2021-06-10 12:29:57,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 186 events. 48/186 cut-off events. For 175/183 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 761 event pairs, 18 based on Foata normal form. 6/184 useless extension candidates. Maximal degree in co-relation 404. Up to 52 conditions per place. [2021-06-10 12:29:57,410 INFO L132 encePairwiseOnDemand]: 52/59 looper letters, 8 selfloop transitions, 3 changer transitions 19/69 dead transitions. [2021-06-10 12:29:57,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 259 flow [2021-06-10 12:29:57,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:29:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:29:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 446 transitions. [2021-06-10 12:29:57,413 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.839924670433145 [2021-06-10 12:29:57,413 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 446 transitions. [2021-06-10 12:29:57,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 446 transitions. [2021-06-10 12:29:57,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:57,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 446 transitions. [2021-06-10 12:29:57,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 49.55555555555556) internal successors, (446), 9 states have internal predecessors, (446), 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 12:29:57,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:57,416 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:57,416 INFO L185 Difference]: Start difference. First operand has 66 places, 48 transitions, 139 flow. Second operand 9 states and 446 transitions. [2021-06-10 12:29:57,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 259 flow [2021-06-10 12:29:57,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 242 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-06-10 12:29:57,420 INFO L241 Difference]: Finished difference. Result has 71 places, 50 transitions, 173 flow [2021-06-10 12:29:57,420 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=173, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2021-06-10 12:29:57,421 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2021-06-10 12:29:57,421 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 173 flow [2021-06-10 12:29:57,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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 12:29:57,421 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:57,421 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] [2021-06-10 12:29:57,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:29:57,421 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:57,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:57,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1675340228, now seen corresponding path program 1 times [2021-06-10 12:29:57,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:57,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959693783] [2021-06-10 12:29:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:57,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:57,503 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-10 12:29:57,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:57,508 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:29:57,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:29:57,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:57,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:57,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:57,537 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 12:29:57,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959693783] [2021-06-10 12:29:57,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:57,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:29:57,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464670864] [2021-06-10 12:29:57,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:29:57,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:29:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:29:57,539 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 59 [2021-06-10 12:29:57,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 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 12:29:57,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:57,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 59 [2021-06-10 12:29:57,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:57,683 INFO L129 PetriNetUnfolder]: 53/214 cut-off events. [2021-06-10 12:29:57,683 INFO L130 PetriNetUnfolder]: For 609/695 co-relation queries the response was YES. [2021-06-10 12:29:57,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 214 events. 53/214 cut-off events. For 609/695 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 938 event pairs, 0 based on Foata normal form. 8/215 useless extension candidates. Maximal degree in co-relation 689. Up to 52 conditions per place. [2021-06-10 12:29:57,685 INFO L132 encePairwiseOnDemand]: 50/59 looper letters, 15 selfloop transitions, 9 changer transitions 25/83 dead transitions. [2021-06-10 12:29:57,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 548 flow [2021-06-10 12:29:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:29:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:29:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 434 transitions. [2021-06-10 12:29:57,687 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8173258003766478 [2021-06-10 12:29:57,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 434 transitions. [2021-06-10 12:29:57,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 434 transitions. [2021-06-10 12:29:57,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:57,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 434 transitions. [2021-06-10 12:29:57,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 48.22222222222222) internal successors, (434), 9 states have internal predecessors, (434), 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 12:29:57,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:57,693 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:57,694 INFO L185 Difference]: Start difference. First operand has 71 places, 50 transitions, 173 flow. Second operand 9 states and 434 transitions. [2021-06-10 12:29:57,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 548 flow [2021-06-10 12:29:57,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 508 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-06-10 12:29:57,702 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 258 flow [2021-06-10 12:29:57,703 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2021-06-10 12:29:57,703 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2021-06-10 12:29:57,703 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 258 flow [2021-06-10 12:29:57,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 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 12:29:57,704 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:57,706 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] [2021-06-10 12:29:57,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:29:57,707 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:57,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1501616315, now seen corresponding path program 1 times [2021-06-10 12:29:57,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:57,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919792209] [2021-06-10 12:29:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:57,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:57,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:57,771 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:29:57,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:29:57,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:29:57,792 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:29:57,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:57,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:57,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:57,810 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 12:29:57,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919792209] [2021-06-10 12:29:57,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:57,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:29:57,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134553600] [2021-06-10 12:29:57,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:29:57,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:57,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:29:57,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:29:57,814 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 59 [2021-06-10 12:29:57,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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 12:29:57,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:57,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 59 [2021-06-10 12:29:57,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:57,943 INFO L129 PetriNetUnfolder]: 53/227 cut-off events. [2021-06-10 12:29:57,944 INFO L130 PetriNetUnfolder]: For 306/313 co-relation queries the response was YES. [2021-06-10 12:29:57,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 227 events. 53/227 cut-off events. For 306/313 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1209 event pairs, 6 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 501. Up to 43 conditions per place. [2021-06-10 12:29:57,951 INFO L132 encePairwiseOnDemand]: 50/59 looper letters, 6 selfloop transitions, 5 changer transitions 26/77 dead transitions. [2021-06-10 12:29:57,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 370 flow [2021-06-10 12:29:57,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:29:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:29:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 495 transitions. [2021-06-10 12:29:57,958 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8389830508474576 [2021-06-10 12:29:57,958 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 495 transitions. [2021-06-10 12:29:57,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 495 transitions. [2021-06-10 12:29:57,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:57,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 495 transitions. [2021-06-10 12:29:57,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 49.5) internal successors, (495), 10 states have internal predecessors, (495), 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 12:29:57,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 59.0) internal successors, (649), 11 states have internal predecessors, (649), 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 12:29:57,987 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 59.0) internal successors, (649), 11 states have internal predecessors, (649), 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 12:29:57,987 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 258 flow. Second operand 10 states and 495 transitions. [2021-06-10 12:29:57,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 370 flow [2021-06-10 12:29:57,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 332 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-06-10 12:29:57,991 INFO L241 Difference]: Finished difference. Result has 81 places, 51 transitions, 214 flow [2021-06-10 12:29:57,991 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=81, PETRI_TRANSITIONS=51} [2021-06-10 12:29:57,992 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2021-06-10 12:29:57,992 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 51 transitions, 214 flow [2021-06-10 12:29:57,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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 12:29:57,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:57,992 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 12:29:57,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:29:57,993 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:57,993 INFO L82 PathProgramCache]: Analyzing trace with hash 486077214, now seen corresponding path program 1 times [2021-06-10 12:29:57,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:57,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443712308] [2021-06-10 12:29:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:58,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:58,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:58,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:58,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:58,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:58,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:58,059 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:29:58,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:29:58,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:58,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:29:58,082 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:29:58,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:58,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:58,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:58,090 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 12:29:58,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443712308] [2021-06-10 12:29:58,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:58,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:29:58,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615100892] [2021-06-10 12:29:58,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:29:58,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:58,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:29:58,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:29:58,097 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 59 [2021-06-10 12:29:58,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 51 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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 12:29:58,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:58,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 59 [2021-06-10 12:29:58,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:58,199 INFO L129 PetriNetUnfolder]: 9/79 cut-off events. [2021-06-10 12:29:58,199 INFO L130 PetriNetUnfolder]: For 87/94 co-relation queries the response was YES. [2021-06-10 12:29:58,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 79 events. 9/79 cut-off events. For 87/94 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 187 event pairs, 0 based on Foata normal form. 7/85 useless extension candidates. Maximal degree in co-relation 211. Up to 19 conditions per place. [2021-06-10 12:29:58,200 INFO L132 encePairwiseOnDemand]: 51/59 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2021-06-10 12:29:58,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 56 transitions, 293 flow [2021-06-10 12:29:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:29:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:29:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 484 transitions. [2021-06-10 12:29:58,201 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8203389830508474 [2021-06-10 12:29:58,201 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 484 transitions. [2021-06-10 12:29:58,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 484 transitions. [2021-06-10 12:29:58,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:58,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 484 transitions. [2021-06-10 12:29:58,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 48.4) internal successors, (484), 10 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:58,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 59.0) internal successors, (649), 11 states have internal predecessors, (649), 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 12:29:58,204 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 59.0) internal successors, (649), 11 states have internal predecessors, (649), 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 12:29:58,204 INFO L185 Difference]: Start difference. First operand has 81 places, 51 transitions, 214 flow. Second operand 10 states and 484 transitions. [2021-06-10 12:29:58,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 56 transitions, 293 flow [2021-06-10 12:29:58,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 237 flow, removed 19 selfloop flow, removed 12 redundant places. [2021-06-10 12:29:58,205 INFO L241 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2021-06-10 12:29:58,205 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2021-06-10 12:29:58,205 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2021-06-10 12:29:58,205 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2021-06-10 12:29:58,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 47.142857142857146) internal successors, (330), 7 states have internal predecessors, (330), 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 12:29:58,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:29:58,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:29:58 BasicIcfg [2021-06-10 12:29:58,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:29:58,210 INFO L168 Benchmark]: Toolchain (without parser) took 2413.70 ms. Allocated memory is still 385.9 MB. Free memory was 348.7 MB in the beginning and 324.0 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.0 GB. [2021-06-10 12:29:58,210 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 385.9 MB. Free memory was 366.3 MB in the beginning and 366.2 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:29:58,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.44 ms. Allocated memory is still 385.9 MB. Free memory was 348.5 MB in the beginning and 348.8 MB in the end (delta: -275.1 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.0 GB. [2021-06-10 12:29:58,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.06 ms. Allocated memory is still 385.9 MB. Free memory was 348.8 MB in the beginning and 346.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:29:58,213 INFO L168 Benchmark]: Boogie Preprocessor took 12.60 ms. Allocated memory is still 385.9 MB. Free memory was 346.7 MB in the beginning and 345.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:29:58,215 INFO L168 Benchmark]: RCFGBuilder took 280.62 ms. Allocated memory is still 385.9 MB. Free memory was 345.6 MB in the beginning and 324.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-06-10 12:29:58,215 INFO L168 Benchmark]: TraceAbstraction took 1711.76 ms. Allocated memory is still 385.9 MB. Free memory was 324.7 MB in the beginning and 324.0 MB in the end (delta: 639.8 kB). Peak memory consumption was 639.8 kB. Max. memory is 16.0 GB. [2021-06-10 12:29:58,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 385.9 MB. Free memory was 366.3 MB in the beginning and 366.2 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 380.44 ms. Allocated memory is still 385.9 MB. Free memory was 348.5 MB in the beginning and 348.8 MB in the end (delta: -275.1 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.06 ms. Allocated memory is still 385.9 MB. Free memory was 348.8 MB in the beginning and 346.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.60 ms. Allocated memory is still 385.9 MB. Free memory was 346.7 MB in the beginning and 345.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 280.62 ms. Allocated memory is still 385.9 MB. Free memory was 345.6 MB in the beginning and 324.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1711.76 ms. Allocated memory is still 385.9 MB. Free memory was 324.7 MB in the beginning and 324.0 MB in the end (delta: 639.8 kB). Peak memory consumption was 639.8 kB. 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 3 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1648.8ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 838.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 65 SDtfs, 116 SDslu, 165 SDs, 0 SdLazy, 161 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 170.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 536.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=3, InterpolantAutomatonStates: 47, 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: 11.7ms SsaConstructionTime, 105.3ms SatisfiabilityAnalysisTime, 528.2ms InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...