/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/safe004_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:50:04,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:50:04,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:50:04,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:50:04,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:50:04,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:50:04,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:50:04,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:50:04,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:50:04,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:50:04,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:50:04,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:50:04,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:50:04,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:50:04,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:50:04,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:50:04,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:50:04,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:50:04,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:50:04,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:50:04,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:50:04,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:50:04,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:50:04,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:50:04,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 22:50:04,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 22:50:04,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 22:50:04,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 22:50:04,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 22:50:04,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 22:50:04,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 22:50:04,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 22:50:04,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 22:50:04,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 22:50:04,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 22:50:04,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 22:50:04,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 22:50:04,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 22:50:04,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:50:04,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:50:04,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:50:04,787 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 [2022-01-18 22:50:04,815 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:50:04,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:50:04,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:50:04,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:50:04,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:50:04,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:50:04,822 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:50:04,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:50:04,822 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:50:04,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:50:04,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:50:04,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:50:04,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:50:04,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:50:04,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:50:04,823 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:50:04,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:50:04,823 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:50:04,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:50:04,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:50:04,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:50:04,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:50:04,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:50:04,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:50:04,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:50:04,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:50:04,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:50:04,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:50:04,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:50:04,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:50:04,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:50:04,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:50:05,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:50:05,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:50:05,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:50:05,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:50:05,024 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:50:05,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2022-01-18 22:50:05,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7dfff88b/49abc43433024cdb83c3d3e23186e3ba/FLAGd4f7bedd3 [2022-01-18 22:50:05,439 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:50:05,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2022-01-18 22:50:05,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7dfff88b/49abc43433024cdb83c3d3e23186e3ba/FLAGd4f7bedd3 [2022-01-18 22:50:05,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7dfff88b/49abc43433024cdb83c3d3e23186e3ba [2022-01-18 22:50:05,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:50:05,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:50:05,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:50:05,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:50:05,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:50:05,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:50:05" (1/1) ... [2022-01-18 22:50:05,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72255b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:05, skipping insertion in model container [2022-01-18 22:50:05,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:50:05" (1/1) ... [2022-01-18 22:50:05,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:50:05,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:50:05,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2022-01-18 22:50:06,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:50:06,103 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:50:06,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2022-01-18 22:50:06,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:50:06,168 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:50:06,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06 WrapperNode [2022-01-18 22:50:06,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:50:06,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:50:06,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:50:06,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:50:06,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,217 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-01-18 22:50:06,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:50:06,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:50:06,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:50:06,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:50:06,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:50:06,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:50:06,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:50:06,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:50:06,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (1/1) ... [2022-01-18 22:50:06,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:50:06,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:50:06,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 22:50:06,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 22:50:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:50:06,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:50:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:50:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:50:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:50:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 22:50:06,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 22:50:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 22:50:06,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 22:50:06,315 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 22:50:06,316 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 22:50:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:50:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:50:06,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:50:06,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:50:06,317 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:50:06,415 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:50:06,416 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:50:06,533 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:50:06,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:50:06,538 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:50:06,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:50:06 BoogieIcfgContainer [2022-01-18 22:50:06,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:50:06,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:50:06,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:50:06,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:50:06,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:50:05" (1/3) ... [2022-01-18 22:50:06,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d4f68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:50:06, skipping insertion in model container [2022-01-18 22:50:06,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:50:06" (2/3) ... [2022-01-18 22:50:06,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d4f68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:50:06, skipping insertion in model container [2022-01-18 22:50:06,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:50:06" (3/3) ... [2022-01-18 22:50:06,545 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2022-01-18 22:50:06,548 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:50:06,548 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:50:06,548 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:50:06,578 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,578 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,578 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,578 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,578 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,578 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,578 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,579 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,579 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,579 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,579 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,579 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,579 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,579 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,580 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,580 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,580 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,580 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,580 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,580 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,580 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,580 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,581 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,581 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,581 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,581 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,581 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,581 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,581 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,581 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,581 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,582 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,582 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,582 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,582 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,582 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,584 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,584 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,584 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,584 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,585 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,586 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,586 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,586 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,586 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,586 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,586 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,586 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:50:06,587 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:50:06,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:50:06,618 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 22:50:06,618 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 22:50:06,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-01-18 22:50:06,660 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2022-01-18 22:50:06,660 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:50:06,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-18 22:50:06,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-01-18 22:50:06,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-01-18 22:50:06,677 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2022-01-18 22:50:06,677 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:50:06,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:06,678 INFO L254 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, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:06,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:06,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:06,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1258848663, now seen corresponding path program 1 times [2022-01-18 22:50:06,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:06,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793167715] [2022-01-18 22:50:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:06,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:07,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:07,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793167715] [2022-01-18 22:50:07,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793167715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:07,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:07,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:50:07,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2260828] [2022-01-18 22:50:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:07,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:50:07,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:50:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:50:07,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-01-18 22:50:07,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-01-18 22:50:07,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:07,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-01-18 22:50:07,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:07,494 INFO L129 PetriNetUnfolder]: 530/1189 cut-off events. [2022-01-18 22:50:07,495 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-01-18 22:50:07,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 1189 events. 530/1189 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7034 event pairs, 38 based on Foata normal form. 41/1180 useless extension candidates. Maximal degree in co-relation 2030. Up to 249 conditions per place. [2022-01-18 22:50:07,505 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 25 selfloop transitions, 7 changer transitions 56/142 dead transitions. [2022-01-18 22:50:07,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 469 flow [2022-01-18 22:50:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:50:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:50:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2022-01-18 22:50:07,529 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8267117497886729 [2022-01-18 22:50:07,529 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2022-01-18 22:50:07,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2022-01-18 22:50:07,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:07,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2022-01-18 22:50:07,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 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) [2022-01-18 22:50:07,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2022-01-18 22:50:07,545 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2022-01-18 22:50:07,546 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 978 transitions. [2022-01-18 22:50:07,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 469 flow [2022-01-18 22:50:07,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 466 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-18 22:50:07,555 INFO L242 Difference]: Finished difference. Result has 104 places, 78 transitions, 252 flow [2022-01-18 22:50:07,556 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=252, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2022-01-18 22:50:07,560 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-01-18 22:50:07,560 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 252 flow [2022-01-18 22:50:07,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-01-18 22:50:07,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:07,561 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:07,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:50:07,561 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash -787276515, now seen corresponding path program 1 times [2022-01-18 22:50:07,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:07,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530290897] [2022-01-18 22:50:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:07,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:07,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:07,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530290897] [2022-01-18 22:50:07,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530290897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:07,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:07,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:50:07,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164153008] [2022-01-18 22:50:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:07,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:50:07,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:50:07,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:50:07,735 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-01-18 22:50:07,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 252 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2022-01-18 22:50:07,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:07,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-01-18 22:50:07,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:07,936 INFO L129 PetriNetUnfolder]: 303/837 cut-off events. [2022-01-18 22:50:07,937 INFO L130 PetriNetUnfolder]: For 1964/3248 co-relation queries the response was YES. [2022-01-18 22:50:07,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 837 events. 303/837 cut-off events. For 1964/3248 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4856 event pairs, 14 based on Foata normal form. 24/830 useless extension candidates. Maximal degree in co-relation 2756. Up to 295 conditions per place. [2022-01-18 22:50:07,942 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 22 selfloop transitions, 10 changer transitions 65/151 dead transitions. [2022-01-18 22:50:07,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 151 transitions, 982 flow [2022-01-18 22:50:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 22:50:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-18 22:50:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 820 transitions. [2022-01-18 22:50:07,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8191808191808192 [2022-01-18 22:50:07,944 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 820 transitions. [2022-01-18 22:50:07,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 820 transitions. [2022-01-18 22:50:07,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:07,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 820 transitions. [2022-01-18 22:50:07,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.54545454545455) internal successors, (820), 11 states have internal predecessors, (820), 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) [2022-01-18 22:50:07,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2022-01-18 22:50:07,948 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2022-01-18 22:50:07,948 INFO L186 Difference]: Start difference. First operand has 104 places, 78 transitions, 252 flow. Second operand 11 states and 820 transitions. [2022-01-18 22:50:07,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 151 transitions, 982 flow [2022-01-18 22:50:07,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 151 transitions, 959 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-01-18 22:50:07,957 INFO L242 Difference]: Finished difference. Result has 109 places, 79 transitions, 306 flow [2022-01-18 22:50:07,957 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=306, PETRI_PLACES=109, PETRI_TRANSITIONS=79} [2022-01-18 22:50:07,958 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 26 predicate places. [2022-01-18 22:50:07,958 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 79 transitions, 306 flow [2022-01-18 22:50:07,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2022-01-18 22:50:07,959 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:07,959 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:07,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:50:07,959 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1290802364, now seen corresponding path program 1 times [2022-01-18 22:50:07,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:07,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840276463] [2022-01-18 22:50:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:07,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:08,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:08,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840276463] [2022-01-18 22:50:08,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840276463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:08,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:08,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:50:08,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119656798] [2022-01-18 22:50:08,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:08,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:50:08,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:50:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:50:08,096 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-01-18 22:50:08,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 79 transitions, 306 flow. Second operand has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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) [2022-01-18 22:50:08,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:08,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-01-18 22:50:08,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:08,284 INFO L129 PetriNetUnfolder]: 121/482 cut-off events. [2022-01-18 22:50:08,284 INFO L130 PetriNetUnfolder]: For 1831/2063 co-relation queries the response was YES. [2022-01-18 22:50:08,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1657 conditions, 482 events. 121/482 cut-off events. For 1831/2063 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2353 event pairs, 2 based on Foata normal form. 20/486 useless extension candidates. Maximal degree in co-relation 1601. Up to 143 conditions per place. [2022-01-18 22:50:08,287 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 21 selfloop transitions, 6 changer transitions 54/135 dead transitions. [2022-01-18 22:50:08,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 135 transitions, 992 flow [2022-01-18 22:50:08,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:50:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:50:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 953 transitions. [2022-01-18 22:50:08,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8055790363482671 [2022-01-18 22:50:08,289 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 953 transitions. [2022-01-18 22:50:08,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 953 transitions. [2022-01-18 22:50:08,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:08,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 953 transitions. [2022-01-18 22:50:08,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.3076923076923) internal successors, (953), 13 states have internal predecessors, (953), 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) [2022-01-18 22:50:08,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2022-01-18 22:50:08,293 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2022-01-18 22:50:08,293 INFO L186 Difference]: Start difference. First operand has 109 places, 79 transitions, 306 flow. Second operand 13 states and 953 transitions. [2022-01-18 22:50:08,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 135 transitions, 992 flow [2022-01-18 22:50:08,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 135 transitions, 840 flow, removed 54 selfloop flow, removed 9 redundant places. [2022-01-18 22:50:08,298 INFO L242 Difference]: Finished difference. Result has 115 places, 75 transitions, 255 flow [2022-01-18 22:50:08,299 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=255, PETRI_PLACES=115, PETRI_TRANSITIONS=75} [2022-01-18 22:50:08,299 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-01-18 22:50:08,299 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 75 transitions, 255 flow [2022-01-18 22:50:08,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 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) [2022-01-18 22:50:08,300 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:08,300 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:08,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:50:08,300 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 19590024, now seen corresponding path program 1 times [2022-01-18 22:50:08,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:08,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234186705] [2022-01-18 22:50:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:08,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:08,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:08,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234186705] [2022-01-18 22:50:08,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234186705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:08,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:08,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:50:08,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507999476] [2022-01-18 22:50:08,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:08,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:50:08,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:50:08,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:50:08,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 91 [2022-01-18 22:50:08,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 75 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 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) [2022-01-18 22:50:08,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:08,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 91 [2022-01-18 22:50:08,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:08,502 INFO L129 PetriNetUnfolder]: 11/120 cut-off events. [2022-01-18 22:50:08,503 INFO L130 PetriNetUnfolder]: For 245/261 co-relation queries the response was YES. [2022-01-18 22:50:08,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 120 events. 11/120 cut-off events. For 245/261 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 261 event pairs, 1 based on Foata normal form. 8/127 useless extension candidates. Maximal degree in co-relation 288. Up to 20 conditions per place. [2022-01-18 22:50:08,503 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 9 selfloop transitions, 2 changer transitions 16/88 dead transitions. [2022-01-18 22:50:08,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 88 transitions, 411 flow [2022-01-18 22:50:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:50:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:50:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2022-01-18 22:50:08,505 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2022-01-18 22:50:08,505 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2022-01-18 22:50:08,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2022-01-18 22:50:08,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:08,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2022-01-18 22:50:08,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 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) [2022-01-18 22:50:08,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2022-01-18 22:50:08,508 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2022-01-18 22:50:08,508 INFO L186 Difference]: Start difference. First operand has 115 places, 75 transitions, 255 flow. Second operand 9 states and 707 transitions. [2022-01-18 22:50:08,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 88 transitions, 411 flow [2022-01-18 22:50:08,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 88 transitions, 336 flow, removed 28 selfloop flow, removed 15 redundant places. [2022-01-18 22:50:08,510 INFO L242 Difference]: Finished difference. Result has 107 places, 72 transitions, 210 flow [2022-01-18 22:50:08,510 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=107, PETRI_TRANSITIONS=72} [2022-01-18 22:50:08,511 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 24 predicate places. [2022-01-18 22:50:08,511 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 72 transitions, 210 flow [2022-01-18 22:50:08,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 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) [2022-01-18 22:50:08,511 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:08,512 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:08,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:50:08,512 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1075709624, now seen corresponding path program 1 times [2022-01-18 22:50:08,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:08,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916113976] [2022-01-18 22:50:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:08,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:08,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:08,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916113976] [2022-01-18 22:50:08,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916113976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:08,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:08,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:50:08,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391605261] [2022-01-18 22:50:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:08,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:50:08,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:08,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:50:08,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:50:08,572 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-01-18 22:50:08,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 72 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2022-01-18 22:50:08,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:08,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-01-18 22:50:08,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:08,657 INFO L129 PetriNetUnfolder]: 116/372 cut-off events. [2022-01-18 22:50:08,658 INFO L130 PetriNetUnfolder]: For 66/68 co-relation queries the response was YES. [2022-01-18 22:50:08,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 372 events. 116/372 cut-off events. For 66/68 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1945 event pairs, 3 based on Foata normal form. 10/366 useless extension candidates. Maximal degree in co-relation 661. Up to 106 conditions per place. [2022-01-18 22:50:08,660 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 21 selfloop transitions, 14 changer transitions 4/98 dead transitions. [2022-01-18 22:50:08,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 98 transitions, 342 flow [2022-01-18 22:50:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:50:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:50:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2022-01-18 22:50:08,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2022-01-18 22:50:08,661 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2022-01-18 22:50:08,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2022-01-18 22:50:08,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:08,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2022-01-18 22:50:08,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 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) [2022-01-18 22:50:08,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2022-01-18 22:50:08,664 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2022-01-18 22:50:08,664 INFO L186 Difference]: Start difference. First operand has 107 places, 72 transitions, 210 flow. Second operand 9 states and 707 transitions. [2022-01-18 22:50:08,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 98 transitions, 342 flow [2022-01-18 22:50:08,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 312 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-01-18 22:50:08,666 INFO L242 Difference]: Finished difference. Result has 100 places, 84 transitions, 280 flow [2022-01-18 22:50:08,667 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=280, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2022-01-18 22:50:08,667 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2022-01-18 22:50:08,667 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 280 flow [2022-01-18 22:50:08,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2022-01-18 22:50:08,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:08,668 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:08,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:50:08,668 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:08,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:08,668 INFO L85 PathProgramCache]: Analyzing trace with hash -454424247, now seen corresponding path program 1 times [2022-01-18 22:50:08,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:08,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488278457] [2022-01-18 22:50:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:08,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:08,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:08,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488278457] [2022-01-18 22:50:08,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488278457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:08,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:08,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:50:08,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905300593] [2022-01-18 22:50:08,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:08,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:50:08,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:08,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:50:08,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:50:08,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-01-18 22:50:08,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 280 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2022-01-18 22:50:08,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:08,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-01-18 22:50:08,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:08,848 INFO L129 PetriNetUnfolder]: 108/367 cut-off events. [2022-01-18 22:50:08,849 INFO L130 PetriNetUnfolder]: For 673/737 co-relation queries the response was YES. [2022-01-18 22:50:08,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 367 events. 108/367 cut-off events. For 673/737 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1950 event pairs, 2 based on Foata normal form. 30/385 useless extension candidates. Maximal degree in co-relation 1068. Up to 126 conditions per place. [2022-01-18 22:50:08,850 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 14 selfloop transitions, 21 changer transitions 19/113 dead transitions. [2022-01-18 22:50:08,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 573 flow [2022-01-18 22:50:08,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 22:50:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-18 22:50:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 940 transitions. [2022-01-18 22:50:08,852 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8608058608058609 [2022-01-18 22:50:08,852 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 940 transitions. [2022-01-18 22:50:08,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 940 transitions. [2022-01-18 22:50:08,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:08,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 940 transitions. [2022-01-18 22:50:08,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.33333333333333) internal successors, (940), 12 states have internal predecessors, (940), 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) [2022-01-18 22:50:08,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 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) [2022-01-18 22:50:08,856 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 91.0) internal successors, (1183), 13 states have internal predecessors, (1183), 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) [2022-01-18 22:50:08,856 INFO L186 Difference]: Start difference. First operand has 100 places, 84 transitions, 280 flow. Second operand 12 states and 940 transitions. [2022-01-18 22:50:08,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 573 flow [2022-01-18 22:50:08,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 567 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-18 22:50:08,858 INFO L242 Difference]: Finished difference. Result has 115 places, 90 transitions, 403 flow [2022-01-18 22:50:08,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=403, PETRI_PLACES=115, PETRI_TRANSITIONS=90} [2022-01-18 22:50:08,859 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-01-18 22:50:08,859 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 90 transitions, 403 flow [2022-01-18 22:50:08,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2022-01-18 22:50:08,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:50:08,859 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:08,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 22:50:08,859 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:50:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:50:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash -128567324, now seen corresponding path program 1 times [2022-01-18 22:50:08,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:50:08,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917855593] [2022-01-18 22:50:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:50:08,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:50:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:50:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:50:08,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:50:08,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917855593] [2022-01-18 22:50:08,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917855593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:50:08,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:50:08,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:50:08,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821450291] [2022-01-18 22:50:08,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:50:08,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:50:08,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:50:08,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:50:08,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:50:08,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-01-18 22:50:08,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 90 transitions, 403 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2022-01-18 22:50:08,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:50:08,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-01-18 22:50:08,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:50:09,066 INFO L129 PetriNetUnfolder]: 38/225 cut-off events. [2022-01-18 22:50:09,066 INFO L130 PetriNetUnfolder]: For 822/897 co-relation queries the response was YES. [2022-01-18 22:50:09,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 225 events. 38/225 cut-off events. For 822/897 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1050 event pairs, 1 based on Foata normal form. 17/232 useless extension candidates. Maximal degree in co-relation 741. Up to 58 conditions per place. [2022-01-18 22:50:09,067 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2022-01-18 22:50:09,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 97 transitions, 573 flow [2022-01-18 22:50:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 22:50:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-18 22:50:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1151 transitions. [2022-01-18 22:50:09,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8432234432234432 [2022-01-18 22:50:09,070 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1151 transitions. [2022-01-18 22:50:09,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1151 transitions. [2022-01-18 22:50:09,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:50:09,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1151 transitions. [2022-01-18 22:50:09,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.73333333333333) internal successors, (1151), 15 states have internal predecessors, (1151), 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) [2022-01-18 22:50:09,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 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) [2022-01-18 22:50:09,073 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 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) [2022-01-18 22:50:09,073 INFO L186 Difference]: Start difference. First operand has 115 places, 90 transitions, 403 flow. Second operand 15 states and 1151 transitions. [2022-01-18 22:50:09,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 97 transitions, 573 flow [2022-01-18 22:50:09,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 97 transitions, 518 flow, removed 18 selfloop flow, removed 7 redundant places. [2022-01-18 22:50:09,076 INFO L242 Difference]: Finished difference. Result has 115 places, 0 transitions, 0 flow [2022-01-18 22:50:09,076 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=115, PETRI_TRANSITIONS=0} [2022-01-18 22:50:09,077 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-01-18 22:50:09,077 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 0 transitions, 0 flow [2022-01-18 22:50:09,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2022-01-18 22:50:09,079 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 22:50:09,079 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 22:50:09,079 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 22:50:09,079 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 22:50:09,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 22:50:09,082 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:50:09,083 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:50:09,083 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:50:09,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:50:09 BasicIcfg [2022-01-18 22:50:09,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:50:09,086 INFO L158 Benchmark]: Toolchain (without parser) took 3272.88ms. Allocated memory was 427.8MB in the beginning and 518.0MB in the end (delta: 90.2MB). Free memory was 377.6MB in the beginning and 349.1MB in the end (delta: 28.5MB). Peak memory consumption was 121.7MB. Max. memory is 16.0GB. [2022-01-18 22:50:09,086 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 427.8MB. Free memory is still 394.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:50:09,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.36ms. Allocated memory is still 427.8MB. Free memory was 377.4MB in the beginning and 389.9MB in the end (delta: -12.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.0GB. [2022-01-18 22:50:09,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.80ms. Allocated memory is still 427.8MB. Free memory was 389.9MB in the beginning and 387.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:50:09,086 INFO L158 Benchmark]: Boogie Preprocessor took 25.68ms. Allocated memory is still 427.8MB. Free memory was 387.8MB in the beginning and 386.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:50:09,087 INFO L158 Benchmark]: RCFGBuilder took 295.62ms. Allocated memory is still 427.8MB. Free memory was 386.7MB in the beginning and 373.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 22:50:09,087 INFO L158 Benchmark]: TraceAbstraction took 2544.85ms. Allocated memory was 427.8MB in the beginning and 518.0MB in the end (delta: 90.2MB). Free memory was 372.0MB in the beginning and 349.1MB in the end (delta: 22.9MB). Peak memory consumption was 115.2MB. Max. memory is 16.0GB. [2022-01-18 22:50:09,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 427.8MB. Free memory is still 394.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 353.36ms. Allocated memory is still 427.8MB. Free memory was 377.4MB in the beginning and 389.9MB in the end (delta: -12.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.80ms. Allocated memory is still 427.8MB. Free memory was 389.9MB in the beginning and 387.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.68ms. Allocated memory is still 427.8MB. Free memory was 387.8MB in the beginning and 386.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 295.62ms. Allocated memory is still 427.8MB. Free memory was 386.7MB in the beginning and 373.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2544.85ms. Allocated memory was 427.8MB in the beginning and 518.0MB in the end (delta: 90.2MB). Free memory was 372.0MB in the beginning and 349.1MB in the end (delta: 22.9MB). Peak memory consumption was 115.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 305 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 305 mSDsluCounter, 431 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 420 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 102 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=403occurred in iteration=6, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 1795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2022-01-18 22:50:09,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...