/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:36:31,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:36:31,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:36:31,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:36:31,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:36:31,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:36:31,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:36:31,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:36:31,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:36:31,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:36:31,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:36:31,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:36:31,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:36:31,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:36:31,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:36:31,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:36:31,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:36:31,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:36:31,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:36:31,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:36:31,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:36:31,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:36:31,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:36:31,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:36:31,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 13:36:31,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:36:31,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:36:31,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:36:31,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:36:31,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:36:31,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:36:31,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:36:31,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:36:31,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:36:31,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:36:31,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:36:31,265 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-After.epf [2022-01-19 13:36:31,279 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:36:31,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:36:31,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:36:31,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:36:31,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:36:31,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:36:31,282 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:36:31,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:36:31,282 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:36:31,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:36:31,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:36:31,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:36:31,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:36:31,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:36:31,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:36:31,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:36:31,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:36:31,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:36:31,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:36:31,284 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:36:31,285 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:36:31,285 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:36:31,285 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:36:31,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:36:31,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:36:31,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:36:31,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:36:31,456 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:36:31,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2022-01-19 13:36:31,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ac4794a4/3864e4757a2145be811e06df6015abe2/FLAGa13e037be [2022-01-19 13:36:31,851 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:36:31,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2022-01-19 13:36:31,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ac4794a4/3864e4757a2145be811e06df6015abe2/FLAGa13e037be [2022-01-19 13:36:31,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ac4794a4/3864e4757a2145be811e06df6015abe2 [2022-01-19 13:36:31,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:36:31,874 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:36:31,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:36:31,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:36:31,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:36:31,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:36:31" (1/1) ... [2022-01-19 13:36:31,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5b0753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:31, skipping insertion in model container [2022-01-19 13:36:31,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:36:31" (1/1) ... [2022-01-19 13:36:31,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:36:31,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:36:32,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2332,2345] [2022-01-19 13:36:32,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:36:32,014 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:36:32,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c[2332,2345] [2022-01-19 13:36:32,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:36:32,037 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:36:32,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32 WrapperNode [2022-01-19 13:36:32,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:36:32,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:36:32,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:36:32,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:36:32,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,058 INFO L137 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2022-01-19 13:36:32,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:36:32,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:36:32,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:36:32,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:36:32,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:36:32,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:36:32,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:36:32,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:36:32,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (1/1) ... [2022-01-19 13:36:32,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:36:32,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:36:32,107 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) [2022-01-19 13:36:32,113 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 [2022-01-19 13:36:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:36:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:36:32,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:36:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:36:32,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:36:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:36:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:36:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:36:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 13:36:32,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 13:36:32,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:36:32,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:36:32,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:36:32,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:36:32,137 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 13:36:32,200 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:36:32,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:36:32,331 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:36:32,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:36:32,352 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-19 13:36:32,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:36:32 BoogieIcfgContainer [2022-01-19 13:36:32,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:36:32,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:36:32,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:36:32,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:36:32,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:36:31" (1/3) ... [2022-01-19 13:36:32,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc1fa74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:36:32, skipping insertion in model container [2022-01-19 13:36:32,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:36:32" (2/3) ... [2022-01-19 13:36:32,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc1fa74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:36:32, skipping insertion in model container [2022-01-19 13:36:32,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:36:32" (3/3) ... [2022-01-19 13:36:32,362 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2022-01-19 13:36:32,365 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:36:32,365 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:36:32,366 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:36:32,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,397 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,398 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,399 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,399 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,399 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,399 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,399 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,400 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,403 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,403 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,403 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:36:32,413 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 13:36:32,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:36:32,467 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 [2022-01-19 13:36:32,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 13:36:32,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 212 flow [2022-01-19 13:36:32,529 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2022-01-19 13:36:32,530 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 13:36:32,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 6/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-01-19 13:36:32,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 212 flow [2022-01-19 13:36:32,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 87 transitions, 186 flow [2022-01-19 13:36:32,561 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2022-01-19 13:36:32,561 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 13:36:32,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:36:32,562 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] [2022-01-19 13:36:32,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:36:32,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:36:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash 561698338, now seen corresponding path program 1 times [2022-01-19 13:36:32,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:36:32,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319952450] [2022-01-19 13:36:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:36:32,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:36:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:36:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:32,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:36:32,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319952450] [2022-01-19 13:36:32,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319952450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:36:32,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:36:32,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:36:32,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546228885] [2022-01-19 13:36:32,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:36:32,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:36:32,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:36:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:36:32,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:36:32,942 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2022-01-19 13:36:32,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 13:36:32,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:36:32,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2022-01-19 13:36:32,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:36:33,095 INFO L129 PetriNetUnfolder]: 19/148 cut-off events. [2022-01-19 13:36:33,096 INFO L130 PetriNetUnfolder]: For 28/30 co-relation queries the response was YES. [2022-01-19 13:36:33,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 148 events. 19/148 cut-off events. For 28/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 330 event pairs, 2 based on Foata normal form. 16/155 useless extension candidates. Maximal degree in co-relation 103. Up to 35 conditions per place. [2022-01-19 13:36:33,099 INFO L132 encePairwiseOnDemand]: 82/98 looper letters, 15 selfloop transitions, 7 changer transitions 7/92 dead transitions. [2022-01-19 13:36:33,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 263 flow [2022-01-19 13:36:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:36:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:36:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 694 transitions. [2022-01-19 13:36:33,119 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7868480725623582 [2022-01-19 13:36:33,119 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 694 transitions. [2022-01-19 13:36:33,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 694 transitions. [2022-01-19 13:36:33,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:36:33,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 694 transitions. [2022-01-19 13:36:33,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.11111111111111) internal successors, (694), 9 states have internal predecessors, (694), 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) [2022-01-19 13:36:33,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 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) [2022-01-19 13:36:33,132 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 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) [2022-01-19 13:36:33,133 INFO L186 Difference]: Start difference. First operand has 88 places, 87 transitions, 186 flow. Second operand 9 states and 694 transitions. [2022-01-19 13:36:33,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 263 flow [2022-01-19 13:36:33,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 249 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 13:36:33,138 INFO L242 Difference]: Finished difference. Result has 95 places, 83 transitions, 199 flow [2022-01-19 13:36:33,139 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=199, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2022-01-19 13:36:33,141 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 7 predicate places. [2022-01-19 13:36:33,141 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 199 flow [2022-01-19 13:36:33,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 13:36:33,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:36:33,142 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:36:33,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:36:33,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:36:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:36:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1203505565, now seen corresponding path program 1 times [2022-01-19 13:36:33,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:36:33,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697336540] [2022-01-19 13:36:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:36:33,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:36:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:36:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:33,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:36:33,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697336540] [2022-01-19 13:36:33,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697336540] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:36:33,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583955461] [2022-01-19 13:36:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:36:33,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:36:33,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:36:33,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:36:33,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 13:36:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:36:33,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 13:36:33,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:36:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:33,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:36:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:36,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583955461] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 13:36:36,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 13:36:36,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-01-19 13:36:36,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223169457] [2022-01-19 13:36:36,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 13:36:36,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:36:36,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:36:36,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:36:36,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-19 13:36:36,809 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 98 [2022-01-19 13:36:36,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 199 flow. Second operand has 13 states, 13 states have (on average 62.84615384615385) internal successors, (817), 13 states have internal predecessors, (817), 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) [2022-01-19 13:36:36,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:36:36,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 98 [2022-01-19 13:36:36,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:36:37,079 INFO L129 PetriNetUnfolder]: 131/453 cut-off events. [2022-01-19 13:36:37,080 INFO L130 PetriNetUnfolder]: For 34/40 co-relation queries the response was YES. [2022-01-19 13:36:37,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 453 events. 131/453 cut-off events. For 34/40 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2217 event pairs, 10 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 800. Up to 111 conditions per place. [2022-01-19 13:36:37,082 INFO L132 encePairwiseOnDemand]: 87/98 looper letters, 63 selfloop transitions, 14 changer transitions 1/128 dead transitions. [2022-01-19 13:36:37,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 128 transitions, 466 flow [2022-01-19 13:36:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:36:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:36:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 670 transitions. [2022-01-19 13:36:37,084 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2022-01-19 13:36:37,084 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 670 transitions. [2022-01-19 13:36:37,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 670 transitions. [2022-01-19 13:36:37,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:36:37,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 670 transitions. [2022-01-19 13:36:37,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 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) [2022-01-19 13:36:37,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 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) [2022-01-19 13:36:37,088 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 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) [2022-01-19 13:36:37,088 INFO L186 Difference]: Start difference. First operand has 95 places, 83 transitions, 199 flow. Second operand 10 states and 670 transitions. [2022-01-19 13:36:37,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 128 transitions, 466 flow [2022-01-19 13:36:37,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 128 transitions, 449 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-01-19 13:36:37,091 INFO L242 Difference]: Finished difference. Result has 98 places, 91 transitions, 266 flow [2022-01-19 13:36:37,092 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2022-01-19 13:36:37,092 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2022-01-19 13:36:37,092 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 266 flow [2022-01-19 13:36:37,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.84615384615385) internal successors, (817), 13 states have internal predecessors, (817), 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) [2022-01-19 13:36:37,093 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:36:37,093 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:36:37,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 13:36:37,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:36:37,308 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:36:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:36:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1609024425, now seen corresponding path program 2 times [2022-01-19 13:36:37,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:36:37,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619088983] [2022-01-19 13:36:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:36:37,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:36:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:36:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:37,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:36:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619088983] [2022-01-19 13:36:37,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619088983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:36:37,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:36:37,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 13:36:37,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291697013] [2022-01-19 13:36:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:36:37,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 13:36:37,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:36:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 13:36:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 13:36:37,391 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 98 [2022-01-19 13:36:37,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 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) [2022-01-19 13:36:37,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:36:37,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 98 [2022-01-19 13:36:37,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:36:37,545 INFO L129 PetriNetUnfolder]: 133/439 cut-off events. [2022-01-19 13:36:37,545 INFO L130 PetriNetUnfolder]: For 244/244 co-relation queries the response was YES. [2022-01-19 13:36:37,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 439 events. 133/439 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2097 event pairs, 49 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 557. Up to 169 conditions per place. [2022-01-19 13:36:37,549 INFO L132 encePairwiseOnDemand]: 86/98 looper letters, 47 selfloop transitions, 16 changer transitions 4/117 dead transitions. [2022-01-19 13:36:37,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 117 transitions, 513 flow [2022-01-19 13:36:37,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:36:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:36:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 471 transitions. [2022-01-19 13:36:37,550 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6865889212827988 [2022-01-19 13:36:37,550 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 471 transitions. [2022-01-19 13:36:37,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 471 transitions. [2022-01-19 13:36:37,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:36:37,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 471 transitions. [2022-01-19 13:36:37,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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) [2022-01-19 13:36:37,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-01-19 13:36:37,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-01-19 13:36:37,555 INFO L186 Difference]: Start difference. First operand has 98 places, 91 transitions, 266 flow. Second operand 7 states and 471 transitions. [2022-01-19 13:36:37,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 117 transitions, 513 flow [2022-01-19 13:36:37,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 117 transitions, 507 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 13:36:37,562 INFO L242 Difference]: Finished difference. Result has 104 places, 97 transitions, 361 flow [2022-01-19 13:36:37,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=104, PETRI_TRANSITIONS=97} [2022-01-19 13:36:37,564 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 16 predicate places. [2022-01-19 13:36:37,564 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 97 transitions, 361 flow [2022-01-19 13:36:37,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 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) [2022-01-19 13:36:37,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:36:37,564 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:36:37,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:36:37,564 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:36:37,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:36:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1101389844, now seen corresponding path program 1 times [2022-01-19 13:36:37,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:36:37,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638566772] [2022-01-19 13:36:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:36:37,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:36:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:36:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:37,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:36:37,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638566772] [2022-01-19 13:36:37,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638566772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:36:37,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:36:37,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 13:36:37,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78701673] [2022-01-19 13:36:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:36:37,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 13:36:37,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:36:37,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 13:36:37,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 13:36:37,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 98 [2022-01-19 13:36:37,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:36:37,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:36:37,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 98 [2022-01-19 13:36:37,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:36:37,885 INFO L129 PetriNetUnfolder]: 161/461 cut-off events. [2022-01-19 13:36:37,885 INFO L130 PetriNetUnfolder]: For 601/611 co-relation queries the response was YES. [2022-01-19 13:36:37,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 461 events. 161/461 cut-off events. For 601/611 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2183 event pairs, 66 based on Foata normal form. 4/457 useless extension candidates. Maximal degree in co-relation 893. Up to 292 conditions per place. [2022-01-19 13:36:37,888 INFO L132 encePairwiseOnDemand]: 88/98 looper letters, 54 selfloop transitions, 8 changer transitions 5/112 dead transitions. [2022-01-19 13:36:37,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 549 flow [2022-01-19 13:36:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:36:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:36:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 441 transitions. [2022-01-19 13:36:37,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2022-01-19 13:36:37,889 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 441 transitions. [2022-01-19 13:36:37,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 441 transitions. [2022-01-19 13:36:37,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:36:37,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 441 transitions. [2022-01-19 13:36:37,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:36:37,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-01-19 13:36:37,891 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-01-19 13:36:37,892 INFO L186 Difference]: Start difference. First operand has 104 places, 97 transitions, 361 flow. Second operand 7 states and 441 transitions. [2022-01-19 13:36:37,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 112 transitions, 549 flow [2022-01-19 13:36:37,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 112 transitions, 541 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 13:36:37,897 INFO L242 Difference]: Finished difference. Result has 109 places, 95 transitions, 353 flow [2022-01-19 13:36:37,897 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=353, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2022-01-19 13:36:37,898 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 21 predicate places. [2022-01-19 13:36:37,898 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 353 flow [2022-01-19 13:36:37,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:36:37,899 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:36:37,899 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:36:37,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 13:36:37,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:36:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:36:37,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2073059786, now seen corresponding path program 2 times [2022-01-19 13:36:37,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:36:37,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651928559] [2022-01-19 13:36:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:36:37,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:36:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:36:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:38,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:36:38,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651928559] [2022-01-19 13:36:38,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651928559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:36:38,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:36:38,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 13:36:38,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245012292] [2022-01-19 13:36:38,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:36:38,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 13:36:38,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:36:38,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 13:36:38,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 13:36:38,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 98 [2022-01-19 13:36:38,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 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) [2022-01-19 13:36:38,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:36:38,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 98 [2022-01-19 13:36:38,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:36:38,130 INFO L129 PetriNetUnfolder]: 119/393 cut-off events. [2022-01-19 13:36:38,130 INFO L130 PetriNetUnfolder]: For 566/566 co-relation queries the response was YES. [2022-01-19 13:36:38,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 393 events. 119/393 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1660 event pairs, 39 based on Foata normal form. 6/394 useless extension candidates. Maximal degree in co-relation 929. Up to 146 conditions per place. [2022-01-19 13:36:38,132 INFO L132 encePairwiseOnDemand]: 87/98 looper letters, 50 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2022-01-19 13:36:38,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 564 flow [2022-01-19 13:36:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:36:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:36:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 466 transitions. [2022-01-19 13:36:38,134 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6793002915451894 [2022-01-19 13:36:38,134 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 466 transitions. [2022-01-19 13:36:38,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 466 transitions. [2022-01-19 13:36:38,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:36:38,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 466 transitions. [2022-01-19 13:36:38,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 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) [2022-01-19 13:36:38,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-01-19 13:36:38,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 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) [2022-01-19 13:36:38,136 INFO L186 Difference]: Start difference. First operand has 109 places, 95 transitions, 353 flow. Second operand 7 states and 466 transitions. [2022-01-19 13:36:38,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 564 flow [2022-01-19 13:36:38,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 540 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-01-19 13:36:38,139 INFO L242 Difference]: Finished difference. Result has 111 places, 98 transitions, 400 flow [2022-01-19 13:36:38,139 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2022-01-19 13:36:38,139 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 23 predicate places. [2022-01-19 13:36:38,139 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 400 flow [2022-01-19 13:36:38,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 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) [2022-01-19 13:36:38,140 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:36:38,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:36:38,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:36:38,140 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:36:38,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:36:38,140 INFO L85 PathProgramCache]: Analyzing trace with hash -197155217, now seen corresponding path program 1 times [2022-01-19 13:36:38,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:36:38,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028744472] [2022-01-19 13:36:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:36:38,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:36:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:36:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:38,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:36:38,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028744472] [2022-01-19 13:36:38,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028744472] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:36:38,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687498527] [2022-01-19 13:36:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:36:38,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:36:38,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:36:38,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:36:38,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 13:36:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:36:38,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-19 13:36:38,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:36:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:38,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:36:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:36:38,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687498527] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 13:36:38,611 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 13:36:38,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-01-19 13:36:38,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114630671] [2022-01-19 13:36:38,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 13:36:38,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 13:36:38,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:36:38,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 13:36:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-01-19 13:36:38,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2022-01-19 13:36:38,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 400 flow. Second operand has 12 states, 12 states have (on average 74.83333333333333) internal successors, (898), 12 states have internal predecessors, (898), 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) [2022-01-19 13:36:38,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:36:38,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2022-01-19 13:36:38,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:36:38,755 INFO L129 PetriNetUnfolder]: 36/236 cut-off events. [2022-01-19 13:36:38,755 INFO L130 PetriNetUnfolder]: For 343/349 co-relation queries the response was YES. [2022-01-19 13:36:38,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 236 events. 36/236 cut-off events. For 343/349 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 874 event pairs, 3 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 326. Up to 28 conditions per place. [2022-01-19 13:36:38,756 INFO L132 encePairwiseOnDemand]: 86/98 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2022-01-19 13:36:38,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 102 transitions, 467 flow [2022-01-19 13:36:38,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:36:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:36:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 830 transitions. [2022-01-19 13:36:38,758 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7699443413729128 [2022-01-19 13:36:38,758 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 830 transitions. [2022-01-19 13:36:38,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 830 transitions. [2022-01-19 13:36:38,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:36:38,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 830 transitions. [2022-01-19 13:36:38,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.45454545454545) internal successors, (830), 11 states have internal predecessors, (830), 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) [2022-01-19 13:36:38,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-01-19 13:36:38,761 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 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) [2022-01-19 13:36:38,761 INFO L186 Difference]: Start difference. First operand has 111 places, 98 transitions, 400 flow. Second operand 11 states and 830 transitions. [2022-01-19 13:36:38,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 102 transitions, 467 flow [2022-01-19 13:36:38,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 102 transitions, 452 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-01-19 13:36:38,764 INFO L242 Difference]: Finished difference. Result has 115 places, 0 transitions, 0 flow [2022-01-19 13:36:38,764 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=115, PETRI_TRANSITIONS=0} [2022-01-19 13:36:38,764 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 27 predicate places. [2022-01-19 13:36:38,764 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 0 transitions, 0 flow [2022-01-19 13:36:38,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 74.83333333333333) internal successors, (898), 12 states have internal predecessors, (898), 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) [2022-01-19 13:36:38,767 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 13:36:38,767 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 13:36:38,767 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 13:36:38,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 13:36:38,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 13:36:38,986 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-01-19 13:36:38,987 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 13:36:38,987 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 13:36:38,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:36:38 BasicIcfg [2022-01-19 13:36:38,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 13:36:38,990 INFO L158 Benchmark]: Toolchain (without parser) took 7115.47ms. Allocated memory was 400.6MB in the beginning and 522.2MB in the end (delta: 121.6MB). Free memory was 374.3MB in the beginning and 284.9MB in the end (delta: 89.4MB). Peak memory consumption was 212.1MB. Max. memory is 16.0GB. [2022-01-19 13:36:38,990 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 400.6MB. Free memory is still 361.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:36:38,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.67ms. Allocated memory was 400.6MB in the beginning and 522.2MB in the end (delta: 121.6MB). Free memory was 374.3MB in the beginning and 493.5MB in the end (delta: -119.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-19 13:36:38,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.18ms. Allocated memory is still 522.2MB. Free memory was 493.5MB in the beginning and 491.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:36:38,991 INFO L158 Benchmark]: Boogie Preprocessor took 19.03ms. Allocated memory is still 522.2MB. Free memory was 491.9MB in the beginning and 490.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:36:38,991 INFO L158 Benchmark]: RCFGBuilder took 275.24ms. Allocated memory is still 522.2MB. Free memory was 490.7MB in the beginning and 477.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 13:36:38,991 INFO L158 Benchmark]: TraceAbstraction took 6634.89ms. Allocated memory is still 522.2MB. Free memory was 477.1MB in the beginning and 284.9MB in the end (delta: 192.1MB). Peak memory consumption was 196.3MB. Max. memory is 16.0GB. [2022-01-19 13:36:38,992 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 400.6MB. Free memory is still 361.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 162.67ms. Allocated memory was 400.6MB in the beginning and 522.2MB in the end (delta: 121.6MB). Free memory was 374.3MB in the beginning and 493.5MB in the end (delta: -119.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.18ms. Allocated memory is still 522.2MB. Free memory was 493.5MB in the beginning and 491.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 19.03ms. Allocated memory is still 522.2MB. Free memory was 491.9MB in the beginning and 490.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 275.24ms. Allocated memory is still 522.2MB. Free memory was 490.7MB in the beginning and 477.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 6634.89ms. Allocated memory is still 522.2MB. Free memory was 477.1MB in the beginning and 284.9MB in the end (delta: 192.1MB). Peak memory consumption was 196.3MB. 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: 87]: 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 5 procedures, 119 locations, 3 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: 6.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 292 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 194 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 74 IncrementalHoareTripleChecker+Unchecked, 250 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 662 IncrementalHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 97 mSDtfsCounter, 662 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 304 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=5, InterpolantAutomatonStates: 51, 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, 0.2s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 585 NumberOfCodeBlocks, 585 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 728 ConstructedInterpolants, 18 QuantifiedInterpolants, 5252 SizeOfPredicates, 17 NumberOfNonLiveVariables, 335 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 3/12 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! [2022-01-19 13:36:39,005 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...