/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-bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:28:57,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:28:57,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:28:57,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:28:57,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:28:57,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:28:57,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:28:57,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:28:57,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:28:57,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:28:57,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:28:57,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:28:57,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:28:57,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:28:57,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:28:57,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:28:57,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:28:57,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:28:57,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:28:57,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:28:57,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:28:57,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:28:57,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:28:57,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:28:57,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 13:28:57,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 13:28:57,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 13:28:57,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 13:28:57,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 13:28:57,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 13:28:57,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:28:57,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:28:57,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:28:57,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:28:57,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:28:57,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:28:57,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:28:57,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:28:57,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:28:57,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:28:57,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:28:57,174 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 13:28:57,204 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:28:57,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:28:57,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:28:57,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:28:57,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:28:57,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:28:57,207 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:28:57,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:28:57,207 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:28:57,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:28:57,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:28:57,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:28:57,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:28:57,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:28:57,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:28:57,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:28:57,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:28:57,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:28:57,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:28:57,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:28:57,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:28:57,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:28:57,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:28:57,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:28:57,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:28:57,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:28:57,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:28:57,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:28:57,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:28:57,211 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:28:57,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:28:57,211 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:28:57,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:28:57,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:28:57,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:28:57,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:28:57,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:28:57,418 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:28:57,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-01-19 13:28:57,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e322548cb/3d058fd9831349df8c7ae585e2686465/FLAGb8e4b14f6 [2022-01-19 13:28:57,848 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:28:57,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-01-19 13:28:57,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e322548cb/3d058fd9831349df8c7ae585e2686465/FLAGb8e4b14f6 [2022-01-19 13:28:57,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e322548cb/3d058fd9831349df8c7ae585e2686465 [2022-01-19 13:28:57,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:28:57,869 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:28:57,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:28:57,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:28:57,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:28:57,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:28:57" (1/1) ... [2022-01-19 13:28:57,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa77178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:57, skipping insertion in model container [2022-01-19 13:28:57,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:28:57" (1/1) ... [2022-01-19 13:28:57,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:28:57,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:28:58,049 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-bakery-2.wvr.c[3512,3525] [2022-01-19 13:28:58,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:28:58,057 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:28:58,076 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-bakery-2.wvr.c[3512,3525] [2022-01-19 13:28:58,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:28:58,087 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:28:58,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58 WrapperNode [2022-01-19 13:28:58,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:28:58,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:28:58,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:28:58,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:28:58,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,121 INFO L137 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2022-01-19 13:28:58,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:28:58,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:28:58,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:28:58,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:28:58,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:28:58,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:28:58,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:28:58,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:28:58,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (1/1) ... [2022-01-19 13:28:58,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:28:58,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:28:58,172 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 13:28:58,184 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 13:28:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:28:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:28:58,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:28:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:28:58,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:28:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:28:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:28:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:28:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 13:28:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 13:28:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:28:58,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:28:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:28:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:28:58,209 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 13:28:58,272 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:28:58,274 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:28:58,442 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:28:58,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:28:58,543 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 13:28:58,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:28:58 BoogieIcfgContainer [2022-01-19 13:28:58,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:28:58,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:28:58,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:28:58,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:28:58,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:28:57" (1/3) ... [2022-01-19 13:28:58,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14357ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:28:58, skipping insertion in model container [2022-01-19 13:28:58,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:28:58" (2/3) ... [2022-01-19 13:28:58,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14357ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:28:58, skipping insertion in model container [2022-01-19 13:28:58,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:28:58" (3/3) ... [2022-01-19 13:28:58,555 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2022-01-19 13:28:58,559 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:28:58,560 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:28:58,560 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:28:58,593 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,594 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,594 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,594 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,595 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,595 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,595 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,595 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,596 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,597 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,599 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,599 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,599 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,599 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,599 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,600 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,600 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,600 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,600 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,601 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,601 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,601 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,601 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,604 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,604 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,604 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,604 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,604 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,605 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,605 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,605 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:28:58,609 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 13:28:58,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:28:58,657 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 13:28:58,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 13:28:58,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 232 flow [2022-01-19 13:28:58,711 INFO L129 PetriNetUnfolder]: 2/106 cut-off events. [2022-01-19 13:28:58,711 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 13:28:58,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 2/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-01-19 13:28:58,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 232 flow [2022-01-19 13:28:58,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 206 flow [2022-01-19 13:28:58,744 INFO L129 PetriNetUnfolder]: 2/96 cut-off events. [2022-01-19 13:28:58,744 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 13:28:58,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:58,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:58,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:28:58,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:58,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1987416869, now seen corresponding path program 1 times [2022-01-19 13:28:58,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:58,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241843336] [2022-01-19 13:28:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:58,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:28:59,332 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 13:28:59,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:28:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241843336] [2022-01-19 13:28:59,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241843336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:28:59,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:28:59,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:28:59,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877471940] [2022-01-19 13:28:59,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:28:59,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:28:59,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:28:59,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:28:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:28:59,369 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 108 [2022-01-19 13:28:59,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 206 flow. Second operand has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 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 13:28:59,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:28:59,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 108 [2022-01-19 13:28:59,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:28:59,818 INFO L129 PetriNetUnfolder]: 46/296 cut-off events. [2022-01-19 13:28:59,818 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-01-19 13:28:59,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 296 events. 46/296 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1094 event pairs, 27 based on Foata normal form. 5/293 useless extension candidates. Maximal degree in co-relation 301. Up to 64 conditions per place. [2022-01-19 13:28:59,823 INFO L132 encePairwiseOnDemand]: 90/108 looper letters, 44 selfloop transitions, 13 changer transitions 16/136 dead transitions. [2022-01-19 13:28:59,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 136 transitions, 451 flow [2022-01-19 13:28:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:28:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:28:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1247 transitions. [2022-01-19 13:28:59,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7216435185185185 [2022-01-19 13:28:59,855 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1247 transitions. [2022-01-19 13:28:59,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1247 transitions. [2022-01-19 13:28:59,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:28:59,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1247 transitions. [2022-01-19 13:28:59,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 77.9375) internal successors, (1247), 16 states have internal predecessors, (1247), 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 13:28:59,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 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 13:28:59,880 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 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 13:28:59,881 INFO L186 Difference]: Start difference. First operand has 102 places, 97 transitions, 206 flow. Second operand 16 states and 1247 transitions. [2022-01-19 13:28:59,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 136 transitions, 451 flow [2022-01-19 13:28:59,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 429 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 13:28:59,888 INFO L242 Difference]: Finished difference. Result has 118 places, 98 transitions, 246 flow [2022-01-19 13:28:59,889 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=246, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2022-01-19 13:28:59,897 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2022-01-19 13:28:59,897 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 246 flow [2022-01-19 13:28:59,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 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 13:28:59,898 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:59,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:59,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:28:59,900 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:28:59,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1559964915, now seen corresponding path program 2 times [2022-01-19 13:28:59,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:59,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520402090] [2022-01-19 13:28:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:59,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:00,014 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 13:29:00,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:00,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520402090] [2022-01-19 13:29:00,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520402090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:00,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:29:00,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:29:00,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441129506] [2022-01-19 13:29:00,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:00,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:29:00,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:29:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:29:00,018 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2022-01-19 13:29:00,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 13:29:00,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:00,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2022-01-19 13:29:00,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:00,074 INFO L129 PetriNetUnfolder]: 31/234 cut-off events. [2022-01-19 13:29:00,074 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-01-19 13:29:00,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 234 events. 31/234 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 715 event pairs, 19 based on Foata normal form. 3/230 useless extension candidates. Maximal degree in co-relation 361. Up to 57 conditions per place. [2022-01-19 13:29:00,076 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 19 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2022-01-19 13:29:00,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 297 flow [2022-01-19 13:29:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:29:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:29:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2022-01-19 13:29:00,078 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2022-01-19 13:29:00,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2022-01-19 13:29:00,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2022-01-19 13:29:00,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:00,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2022-01-19 13:29:00,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 13:29:00,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 13:29:00,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 13:29:00,081 INFO L186 Difference]: Start difference. First operand has 118 places, 98 transitions, 246 flow. Second operand 3 states and 286 transitions. [2022-01-19 13:29:00,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 297 flow [2022-01-19 13:29:00,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 287 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-01-19 13:29:00,087 INFO L242 Difference]: Finished difference. Result has 106 places, 98 transitions, 244 flow [2022-01-19 13:29:00,087 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2022-01-19 13:29:00,089 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 4 predicate places. [2022-01-19 13:29:00,089 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 244 flow [2022-01-19 13:29:00,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 13:29:00,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:00,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:00,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 13:29:00,090 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:29:00,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:00,091 INFO L85 PathProgramCache]: Analyzing trace with hash 787868635, now seen corresponding path program 3 times [2022-01-19 13:29:00,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:00,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375312991] [2022-01-19 13:29:00,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:00,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:00,309 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 13:29:00,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:00,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375312991] [2022-01-19 13:29:00,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375312991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:00,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:29:00,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:29:00,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967944066] [2022-01-19 13:29:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:00,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:29:00,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:29:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:29:00,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 108 [2022-01-19 13:29:00,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 244 flow. Second operand has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 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 13:29:00,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:00,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 108 [2022-01-19 13:29:00,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:00,549 INFO L129 PetriNetUnfolder]: 45/274 cut-off events. [2022-01-19 13:29:00,549 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-01-19 13:29:00,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 274 events. 45/274 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 958 event pairs, 23 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 279. Up to 60 conditions per place. [2022-01-19 13:29:00,551 INFO L132 encePairwiseOnDemand]: 94/108 looper letters, 32 selfloop transitions, 12 changer transitions 19/126 dead transitions. [2022-01-19 13:29:00,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 126 transitions, 441 flow [2022-01-19 13:29:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 13:29:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 13:29:00,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 939 transitions. [2022-01-19 13:29:00,554 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7245370370370371 [2022-01-19 13:29:00,554 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 939 transitions. [2022-01-19 13:29:00,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 939 transitions. [2022-01-19 13:29:00,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:00,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 939 transitions. [2022-01-19 13:29:00,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 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 13:29:00,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 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 13:29:00,560 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 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 13:29:00,561 INFO L186 Difference]: Start difference. First operand has 106 places, 98 transitions, 244 flow. Second operand 12 states and 939 transitions. [2022-01-19 13:29:00,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 126 transitions, 441 flow [2022-01-19 13:29:00,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 126 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:29:00,564 INFO L242 Difference]: Finished difference. Result has 118 places, 95 transitions, 257 flow [2022-01-19 13:29:00,565 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=257, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2022-01-19 13:29:00,565 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2022-01-19 13:29:00,565 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 257 flow [2022-01-19 13:29:00,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 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 13:29:00,566 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:00,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:00,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:29:00,567 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:29:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1468726647, now seen corresponding path program 4 times [2022-01-19 13:29:00,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:00,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572618030] [2022-01-19 13:29:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:00,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:00,744 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 13:29:00,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:00,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572618030] [2022-01-19 13:29:00,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572618030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:00,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:29:00,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 13:29:00,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790537457] [2022-01-19 13:29:00,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:00,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 13:29:00,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 13:29:00,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-19 13:29:00,752 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-01-19 13:29:00,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 257 flow. Second operand has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 13:29:00,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:00,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-01-19 13:29:00,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:00,863 INFO L129 PetriNetUnfolder]: 40/265 cut-off events. [2022-01-19 13:29:00,863 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-01-19 13:29:00,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 265 events. 40/265 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 878 event pairs, 10 based on Foata normal form. 3/266 useless extension candidates. Maximal degree in co-relation 490. Up to 59 conditions per place. [2022-01-19 13:29:00,865 INFO L132 encePairwiseOnDemand]: 97/108 looper letters, 32 selfloop transitions, 11 changer transitions 7/119 dead transitions. [2022-01-19 13:29:00,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 119 transitions, 413 flow [2022-01-19 13:29:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:29:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:29:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 744 transitions. [2022-01-19 13:29:00,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654320987654321 [2022-01-19 13:29:00,868 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 744 transitions. [2022-01-19 13:29:00,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 744 transitions. [2022-01-19 13:29:00,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:00,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 744 transitions. [2022-01-19 13:29:00,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.66666666666667) internal successors, (744), 9 states have internal predecessors, (744), 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 13:29:00,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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 13:29:00,872 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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 13:29:00,872 INFO L186 Difference]: Start difference. First operand has 118 places, 95 transitions, 257 flow. Second operand 9 states and 744 transitions. [2022-01-19 13:29:00,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 119 transitions, 413 flow [2022-01-19 13:29:00,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 119 transitions, 370 flow, removed 4 selfloop flow, removed 13 redundant places. [2022-01-19 13:29:00,879 INFO L242 Difference]: Finished difference. Result has 112 places, 100 transitions, 264 flow [2022-01-19 13:29:00,879 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2022-01-19 13:29:00,881 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2022-01-19 13:29:00,881 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 264 flow [2022-01-19 13:29:00,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 13:29:00,881 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:00,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:00,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 13:29:00,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:29:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:00,883 INFO L85 PathProgramCache]: Analyzing trace with hash -241955817, now seen corresponding path program 5 times [2022-01-19 13:29:00,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:00,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904498944] [2022-01-19 13:29:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:00,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:01,038 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 13:29:01,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:01,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904498944] [2022-01-19 13:29:01,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904498944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:01,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:29:01,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 13:29:01,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997746120] [2022-01-19 13:29:01,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:01,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 13:29:01,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:01,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 13:29:01,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-19 13:29:01,042 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-01-19 13:29:01,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 264 flow. Second operand has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 13:29:01,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:01,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-01-19 13:29:01,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:01,158 INFO L129 PetriNetUnfolder]: 26/247 cut-off events. [2022-01-19 13:29:01,158 INFO L130 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-01-19 13:29:01,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 247 events. 26/247 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 770 event pairs, 8 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 270. Up to 51 conditions per place. [2022-01-19 13:29:01,159 INFO L132 encePairwiseOnDemand]: 95/108 looper letters, 32 selfloop transitions, 12 changer transitions 8/121 dead transitions. [2022-01-19 13:29:01,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 121 transitions, 435 flow [2022-01-19 13:29:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 13:29:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 13:29:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 745 transitions. [2022-01-19 13:29:01,162 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7664609053497943 [2022-01-19 13:29:01,162 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 745 transitions. [2022-01-19 13:29:01,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 745 transitions. [2022-01-19 13:29:01,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:01,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 745 transitions. [2022-01-19 13:29:01,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.77777777777777) internal successors, (745), 9 states have internal predecessors, (745), 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 13:29:01,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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 13:29:01,167 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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 13:29:01,167 INFO L186 Difference]: Start difference. First operand has 112 places, 100 transitions, 264 flow. Second operand 9 states and 745 transitions. [2022-01-19 13:29:01,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 121 transitions, 435 flow [2022-01-19 13:29:01,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 420 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-01-19 13:29:01,170 INFO L242 Difference]: Finished difference. Result has 119 places, 100 transitions, 303 flow [2022-01-19 13:29:01,170 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=303, PETRI_PLACES=119, PETRI_TRANSITIONS=100} [2022-01-19 13:29:01,173 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 17 predicate places. [2022-01-19 13:29:01,173 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 303 flow [2022-01-19 13:29:01,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 13:29:01,174 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:01,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:01,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:29:01,174 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:29:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash -199218763, now seen corresponding path program 6 times [2022-01-19 13:29:01,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:01,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476824055] [2022-01-19 13:29:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:01,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:01,320 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 13:29:01,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:01,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476824055] [2022-01-19 13:29:01,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476824055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:01,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:29:01,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:29:01,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895505065] [2022-01-19 13:29:01,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:01,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:29:01,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:29:01,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:29:01,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-01-19 13:29:01,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 303 flow. Second operand has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 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 13:29:01,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:01,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-01-19 13:29:01,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:01,420 INFO L129 PetriNetUnfolder]: 12/190 cut-off events. [2022-01-19 13:29:01,421 INFO L130 PetriNetUnfolder]: For 102/106 co-relation queries the response was YES. [2022-01-19 13:29:01,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 190 events. 12/190 cut-off events. For 102/106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 431 event pairs, 4 based on Foata normal form. 5/194 useless extension candidates. Maximal degree in co-relation 226. Up to 37 conditions per place. [2022-01-19 13:29:01,423 INFO L132 encePairwiseOnDemand]: 100/108 looper letters, 23 selfloop transitions, 8 changer transitions 5/105 dead transitions. [2022-01-19 13:29:01,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 105 transitions, 387 flow [2022-01-19 13:29:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 13:29:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 13:29:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 653 transitions. [2022-01-19 13:29:01,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7557870370370371 [2022-01-19 13:29:01,429 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 653 transitions. [2022-01-19 13:29:01,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 653 transitions. [2022-01-19 13:29:01,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:01,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 653 transitions. [2022-01-19 13:29:01,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.625) internal successors, (653), 8 states have internal predecessors, (653), 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 13:29:01,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 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 13:29:01,433 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 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 13:29:01,433 INFO L186 Difference]: Start difference. First operand has 119 places, 100 transitions, 303 flow. Second operand 8 states and 653 transitions. [2022-01-19 13:29:01,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 105 transitions, 387 flow [2022-01-19 13:29:01,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 105 transitions, 342 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-01-19 13:29:01,436 INFO L242 Difference]: Finished difference. Result has 115 places, 97 transitions, 262 flow [2022-01-19 13:29:01,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=262, PETRI_PLACES=115, PETRI_TRANSITIONS=97} [2022-01-19 13:29:01,438 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 13 predicate places. [2022-01-19 13:29:01,438 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 97 transitions, 262 flow [2022-01-19 13:29:01,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 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 13:29:01,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:01,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:01,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 13:29:01,439 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:29:01,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash -932532537, now seen corresponding path program 7 times [2022-01-19 13:29:01,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:01,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596864542] [2022-01-19 13:29:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:01,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:01,489 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 13:29:01,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:01,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596864542] [2022-01-19 13:29:01,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596864542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:01,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:29:01,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:29:01,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855082258] [2022-01-19 13:29:01,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:01,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:29:01,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:29:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:29:01,493 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2022-01-19 13:29:01,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 97 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 13:29:01,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:01,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2022-01-19 13:29:01,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:01,524 INFO L129 PetriNetUnfolder]: 8/172 cut-off events. [2022-01-19 13:29:01,524 INFO L130 PetriNetUnfolder]: For 33/35 co-relation queries the response was YES. [2022-01-19 13:29:01,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 172 events. 8/172 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 342 event pairs, 6 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 144. Up to 28 conditions per place. [2022-01-19 13:29:01,525 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 17 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2022-01-19 13:29:01,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 99 transitions, 308 flow [2022-01-19 13:29:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:29:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:29:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2022-01-19 13:29:01,527 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8765432098765432 [2022-01-19 13:29:01,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2022-01-19 13:29:01,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2022-01-19 13:29:01,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:01,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2022-01-19 13:29:01,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 13:29:01,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 13:29:01,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 13:29:01,529 INFO L186 Difference]: Start difference. First operand has 115 places, 97 transitions, 262 flow. Second operand 3 states and 284 transitions. [2022-01-19 13:29:01,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 99 transitions, 308 flow [2022-01-19 13:29:01,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 99 transitions, 278 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-01-19 13:29:01,532 INFO L242 Difference]: Finished difference. Result has 108 places, 97 transitions, 242 flow [2022-01-19 13:29:01,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2022-01-19 13:29:01,532 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, 6 predicate places. [2022-01-19 13:29:01,532 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 242 flow [2022-01-19 13:29:01,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 13:29:01,533 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:01,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:01,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 13:29:01,533 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:29:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2047705209, now seen corresponding path program 8 times [2022-01-19 13:29:01,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:01,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312916136] [2022-01-19 13:29:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:01,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:01,679 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 13:29:01,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:01,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312916136] [2022-01-19 13:29:01,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312916136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:01,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:29:01,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:29:01,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769536642] [2022-01-19 13:29:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:01,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:29:01,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:29:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:29:01,681 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-01-19 13:29:01,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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 13:29:01,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:01,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-01-19 13:29:01,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:01,727 INFO L129 PetriNetUnfolder]: 4/80 cut-off events. [2022-01-19 13:29:01,728 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-01-19 13:29:01,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 80 events. 4/80 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 4 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 84. Up to 9 conditions per place. [2022-01-19 13:29:01,728 INFO L132 encePairwiseOnDemand]: 102/108 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2022-01-19 13:29:01,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 71 transitions, 204 flow [2022-01-19 13:29:01,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:29:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:29:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 557 transitions. [2022-01-19 13:29:01,730 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7367724867724867 [2022-01-19 13:29:01,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 557 transitions. [2022-01-19 13:29:01,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 557 transitions. [2022-01-19 13:29:01,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:01,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 557 transitions. [2022-01-19 13:29:01,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 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 13:29:01,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 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 13:29:01,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 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 13:29:01,733 INFO L186 Difference]: Start difference. First operand has 108 places, 97 transitions, 242 flow. Second operand 7 states and 557 transitions. [2022-01-19 13:29:01,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 71 transitions, 204 flow [2022-01-19 13:29:01,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 71 transitions, 189 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 13:29:01,735 INFO L242 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2022-01-19 13:29:01,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2022-01-19 13:29:01,737 INFO L334 CegarLoopForPetriNet]: 102 programPoint places, -18 predicate places. [2022-01-19 13:29:01,737 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2022-01-19 13:29:01,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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 13:29:01,740 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 13:29:01,740 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 13:29:01,740 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 13:29:01,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 13:29:01,744 INFO L732 BasicCegarLoop]: Path program histogram: [8] [2022-01-19 13:29:01,745 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 13:29:01,745 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 13:29:01,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:29:01 BasicIcfg [2022-01-19 13:29:01,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 13:29:01,752 INFO L158 Benchmark]: Toolchain (without parser) took 3882.85ms. Allocated memory was 362.8MB in the beginning and 461.4MB in the end (delta: 98.6MB). Free memory was 306.5MB in the beginning and 276.0MB in the end (delta: 30.6MB). Peak memory consumption was 127.4MB. Max. memory is 16.0GB. [2022-01-19 13:29:01,752 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 323.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:29:01,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.92ms. Allocated memory was 362.8MB in the beginning and 461.4MB in the end (delta: 98.6MB). Free memory was 306.3MB in the beginning and 432.8MB in the end (delta: -126.5MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. [2022-01-19 13:29:01,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.67ms. Allocated memory is still 461.4MB. Free memory was 432.8MB in the beginning and 430.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:29:01,753 INFO L158 Benchmark]: Boogie Preprocessor took 17.72ms. Allocated memory is still 461.4MB. Free memory was 430.7MB in the beginning and 429.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:29:01,753 INFO L158 Benchmark]: RCFGBuilder took 408.18ms. Allocated memory is still 461.4MB. Free memory was 429.6MB in the beginning and 410.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 13:29:01,753 INFO L158 Benchmark]: TraceAbstraction took 3201.95ms. Allocated memory is still 461.4MB. Free memory was 410.8MB in the beginning and 276.0MB in the end (delta: 134.8MB). Peak memory consumption was 133.8MB. Max. memory is 16.0GB. [2022-01-19 13:29:01,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 323.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 216.92ms. Allocated memory was 362.8MB in the beginning and 461.4MB in the end (delta: 98.6MB). Free memory was 306.3MB in the beginning and 432.8MB in the end (delta: -126.5MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.67ms. Allocated memory is still 461.4MB. Free memory was 432.8MB in the beginning and 430.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.72ms. Allocated memory is still 461.4MB. Free memory was 430.7MB in the beginning and 429.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 408.18ms. Allocated memory is still 461.4MB. Free memory was 429.6MB in the beginning and 410.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 3201.95ms. Allocated memory is still 461.4MB. Free memory was 410.8MB in the beginning and 276.0MB in the end (delta: 134.8MB). Peak memory consumption was 133.8MB. 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: 130]: 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, 133 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: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 293 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 293 mSDsluCounter, 293 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 578 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1005 IncrementalHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 95 mSDtfsCounter, 1005 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=303occurred in iteration=5, InterpolantAutomatonStates: 67, 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, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 736 ConstructedInterpolants, 0 QuantifiedInterpolants, 2089 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 13:29:01,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...