/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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 05:00:15,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 05:00:15,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 05:00:15,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 05:00:15,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 05:00:15,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 05:00:15,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 05:00:15,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 05:00:15,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 05:00:15,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 05:00:15,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 05:00:15,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 05:00:15,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 05:00:15,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 05:00:15,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 05:00:15,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 05:00:15,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 05:00:15,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 05:00:15,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 05:00:15,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 05:00:15,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 05:00:15,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 05:00:15,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 05:00:15,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 05:00:15,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 05:00:15,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 05:00:15,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 05:00:15,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 05:00:15,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 05:00:15,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 05:00:15,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 05:00:15,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 05:00:15,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 05:00:15,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 05:00:15,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 05:00:15,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 05:00:15,236 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-Before.epf [2022-01-19 05:00:15,264 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 05:00:15,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 05:00:15,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 05:00:15,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 05:00:15,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 05:00:15,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 05:00:15,266 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 05:00:15,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 05:00:15,267 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 05:00:15,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 05:00:15,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 05:00:15,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 05:00:15,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 05:00:15,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 05:00:15,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 05:00:15,268 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 05:00:15,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 05:00:15,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 05:00:15,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 05:00:15,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 05:00:15,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 05:00:15,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 05:00:15,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 05:00:15,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:15,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 05:00:15,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 05:00:15,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 05:00:15,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 05:00:15,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 05:00:15,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 05:00:15,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 05:00:15,271 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 05:00:15,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 05:00:15,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 05:00:15,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 05:00:15,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 05:00:15,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 05:00:15,480 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 05:00:15,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2022-01-19 05:00:15,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35fea530/d3f0ce48c9d24ba7ba33e8b4cba1b855/FLAGbbb0c9b3f [2022-01-19 05:00:16,022 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 05:00:16,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2022-01-19 05:00:16,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35fea530/d3f0ce48c9d24ba7ba33e8b4cba1b855/FLAGbbb0c9b3f [2022-01-19 05:00:16,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35fea530/d3f0ce48c9d24ba7ba33e8b4cba1b855 [2022-01-19 05:00:16,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 05:00:16,526 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 05:00:16,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:16,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 05:00:16,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 05:00:16,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:16" (1/1) ... [2022-01-19 05:00:16,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1435418a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:16, skipping insertion in model container [2022-01-19 05:00:16,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:16" (1/1) ... [2022-01-19 05:00:16,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 05:00:16,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 05:00:16,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i[945,958] [2022-01-19 05:00:16,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:16,930 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 05:00:16,941 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i[945,958] [2022-01-19 05:00:16,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:17,015 INFO L208 MainTranslator]: Completed translation [2022-01-19 05:00:17,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17 WrapperNode [2022-01-19 05:00:17,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:17,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:17,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 05:00:17,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 05:00:17,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,069 INFO L137 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-01-19 05:00:17,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:17,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 05:00:17,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 05:00:17,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 05:00:17,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 05:00:17,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 05:00:17,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 05:00:17,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 05:00:17,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:17,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:00:17,137 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 05:00:17,160 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 05:00:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 05:00:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 05:00:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 05:00:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 05:00:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 05:00:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 05:00:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 05:00:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 05:00:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 05:00:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 05:00:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 05:00:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 05:00:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 05:00:17,174 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 05:00:17,256 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 05:00:17,257 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 05:00:17,390 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 05:00:17,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 05:00:17,396 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 05:00:17,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:17 BoogieIcfgContainer [2022-01-19 05:00:17,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 05:00:17,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 05:00:17,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 05:00:17,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 05:00:17,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 05:00:16" (1/3) ... [2022-01-19 05:00:17,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8266a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:17, skipping insertion in model container [2022-01-19 05:00:17,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (2/3) ... [2022-01-19 05:00:17,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8266a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:17, skipping insertion in model container [2022-01-19 05:00:17,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:17" (3/3) ... [2022-01-19 05:00:17,404 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2022-01-19 05:00:17,408 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 05:00:17,409 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 05:00:17,409 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 05:00:17,455 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,455 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,455 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,456 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,456 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,456 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,456 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,456 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,457 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,457 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,457 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,457 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,457 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,458 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,458 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,458 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,458 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,458 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,458 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,458 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,458 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,459 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,459 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,459 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,462 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,462 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,462 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,462 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,468 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,469 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,469 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,469 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,470 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 05:00:17,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:00:17,515 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 05:00:17,516 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 05:00:17,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 75 transitions, 160 flow [2022-01-19 05:00:17,561 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2022-01-19 05:00:17,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:17,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-01-19 05:00:17,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 75 transitions, 160 flow [2022-01-19 05:00:17,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 61 transitions, 128 flow [2022-01-19 05:00:17,592 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2022-01-19 05:00:17,592 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:17,593 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:17,593 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] [2022-01-19 05:00:17,594 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 05:00:17,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:17,598 INFO L85 PathProgramCache]: Analyzing trace with hash 899280188, now seen corresponding path program 1 times [2022-01-19 05:00:17,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:17,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669490264] [2022-01-19 05:00:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:17,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:17,903 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 05:00:17,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:17,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669490264] [2022-01-19 05:00:17,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669490264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:17,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:17,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:00:17,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185824066] [2022-01-19 05:00:17,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:17,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:00:17,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:00:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:00:17,948 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2022-01-19 05:00:17,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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 05:00:17,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:17,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2022-01-19 05:00:17,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:18,078 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2022-01-19 05:00:18,078 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 05:00:18,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 76 events. 3/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 4/79 useless extension candidates. Maximal degree in co-relation 72. Up to 7 conditions per place. [2022-01-19 05:00:18,080 INFO L132 encePairwiseOnDemand]: 68/75 looper letters, 8 selfloop transitions, 2 changer transitions 11/70 dead transitions. [2022-01-19 05:00:18,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 186 flow [2022-01-19 05:00:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 05:00:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 05:00:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 573 transitions. [2022-01-19 05:00:18,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-01-19 05:00:18,111 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 573 transitions. [2022-01-19 05:00:18,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 573 transitions. [2022-01-19 05:00:18,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:18,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 573 transitions. [2022-01-19 05:00:18,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.666666666666664) internal successors, (573), 9 states have internal predecessors, (573), 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 05:00:18,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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 05:00:18,128 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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 05:00:18,130 INFO L186 Difference]: Start difference. First operand has 67 places, 61 transitions, 128 flow. Second operand 9 states and 573 transitions. [2022-01-19 05:00:18,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 186 flow [2022-01-19 05:00:18,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 05:00:18,136 INFO L242 Difference]: Finished difference. Result has 80 places, 59 transitions, 142 flow [2022-01-19 05:00:18,137 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2022-01-19 05:00:18,140 INFO L334 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-01-19 05:00:18,140 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 142 flow [2022-01-19 05:00:18,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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 05:00:18,141 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:18,141 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] [2022-01-19 05:00:18,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 05:00:18,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 05:00:18,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:18,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2118032539, now seen corresponding path program 1 times [2022-01-19 05:00:18,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:18,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695784735] [2022-01-19 05:00:18,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:18,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:18,296 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 05:00:18,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695784735] [2022-01-19 05:00:18,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695784735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:18,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:18,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:18,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748518191] [2022-01-19 05:00:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:18,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:18,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:18,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:18,300 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 75 [2022-01-19 05:00:18,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 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 05:00:18,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:18,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 75 [2022-01-19 05:00:18,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:18,473 INFO L129 PetriNetUnfolder]: 5/87 cut-off events. [2022-01-19 05:00:18,474 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2022-01-19 05:00:18,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 87 events. 5/87 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 134 event pairs, 0 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 138. Up to 7 conditions per place. [2022-01-19 05:00:18,476 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 9 selfloop transitions, 4 changer transitions 12/72 dead transitions. [2022-01-19 05:00:18,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 243 flow [2022-01-19 05:00:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 05:00:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 05:00:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 617 transitions. [2022-01-19 05:00:18,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8226666666666667 [2022-01-19 05:00:18,485 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 617 transitions. [2022-01-19 05:00:18,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 617 transitions. [2022-01-19 05:00:18,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:18,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 617 transitions. [2022-01-19 05:00:18,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.7) internal successors, (617), 10 states have internal predecessors, (617), 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 05:00:18,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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 05:00:18,501 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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 05:00:18,501 INFO L186 Difference]: Start difference. First operand has 80 places, 59 transitions, 142 flow. Second operand 10 states and 617 transitions. [2022-01-19 05:00:18,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 243 flow [2022-01-19 05:00:18,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 209 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-01-19 05:00:18,506 INFO L242 Difference]: Finished difference. Result has 82 places, 59 transitions, 156 flow [2022-01-19 05:00:18,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=156, PETRI_PLACES=82, PETRI_TRANSITIONS=59} [2022-01-19 05:00:18,507 INFO L334 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2022-01-19 05:00:18,507 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 59 transitions, 156 flow [2022-01-19 05:00:18,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 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 05:00:18,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:18,508 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] [2022-01-19 05:00:18,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 05:00:18,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 05:00:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash -536850678, now seen corresponding path program 1 times [2022-01-19 05:00:18,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:18,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115754510] [2022-01-19 05:00:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:18,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:18,668 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 05:00:18,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:18,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115754510] [2022-01-19 05:00:18,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115754510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:18,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:18,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:00:18,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388066886] [2022-01-19 05:00:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:18,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:00:18,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:18,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:00:18,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:00:18,673 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2022-01-19 05:00:18,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 59 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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 05:00:18,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:18,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2022-01-19 05:00:18,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:18,837 INFO L129 PetriNetUnfolder]: 25/148 cut-off events. [2022-01-19 05:00:18,838 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-01-19 05:00:18,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 148 events. 25/148 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 455 event pairs, 0 based on Foata normal form. 4/151 useless extension candidates. Maximal degree in co-relation 244. Up to 26 conditions per place. [2022-01-19 05:00:18,841 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 11 selfloop transitions, 5 changer transitions 15/79 dead transitions. [2022-01-19 05:00:18,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 260 flow [2022-01-19 05:00:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 05:00:18,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 05:00:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 573 transitions. [2022-01-19 05:00:18,844 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-01-19 05:00:18,844 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 573 transitions. [2022-01-19 05:00:18,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 573 transitions. [2022-01-19 05:00:18,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:18,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 573 transitions. [2022-01-19 05:00:18,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.666666666666664) internal successors, (573), 9 states have internal predecessors, (573), 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 05:00:18,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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 05:00:18,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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 05:00:18,851 INFO L186 Difference]: Start difference. First operand has 82 places, 59 transitions, 156 flow. Second operand 9 states and 573 transitions. [2022-01-19 05:00:18,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 260 flow [2022-01-19 05:00:18,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 234 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-01-19 05:00:18,857 INFO L242 Difference]: Finished difference. Result has 80 places, 61 transitions, 174 flow [2022-01-19 05:00:18,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2022-01-19 05:00:18,860 INFO L334 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2022-01-19 05:00:18,860 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 174 flow [2022-01-19 05:00:18,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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 05:00:18,861 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:18,861 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] [2022-01-19 05:00:18,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 05:00:18,862 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 05:00:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash 820819161, now seen corresponding path program 1 times [2022-01-19 05:00:18,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:18,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517860052] [2022-01-19 05:00:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:18,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:19,040 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 05:00:19,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:19,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517860052] [2022-01-19 05:00:19,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517860052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:19,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:19,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:19,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700172992] [2022-01-19 05:00:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:19,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:19,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:19,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:19,048 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2022-01-19 05:00:19,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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 05:00:19,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:19,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2022-01-19 05:00:19,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:19,186 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2022-01-19 05:00:19,187 INFO L130 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-01-19 05:00:19,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 93 events. 9/93 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 142 event pairs, 0 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 187. Up to 18 conditions per place. [2022-01-19 05:00:19,189 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 7 selfloop transitions, 7 changer transitions 11/73 dead transitions. [2022-01-19 05:00:19,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 293 flow [2022-01-19 05:00:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 05:00:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 05:00:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 627 transitions. [2022-01-19 05:00:19,192 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.836 [2022-01-19 05:00:19,192 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 627 transitions. [2022-01-19 05:00:19,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 627 transitions. [2022-01-19 05:00:19,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:19,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 627 transitions. [2022-01-19 05:00:19,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.7) internal successors, (627), 10 states have internal predecessors, (627), 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 05:00:19,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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 05:00:19,196 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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 05:00:19,196 INFO L186 Difference]: Start difference. First operand has 80 places, 61 transitions, 174 flow. Second operand 10 states and 627 transitions. [2022-01-19 05:00:19,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 293 flow [2022-01-19 05:00:19,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 254 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-01-19 05:00:19,200 INFO L242 Difference]: Finished difference. Result has 85 places, 61 transitions, 186 flow [2022-01-19 05:00:19,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=186, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2022-01-19 05:00:19,202 INFO L334 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2022-01-19 05:00:19,202 INFO L470 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 186 flow [2022-01-19 05:00:19,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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 05:00:19,203 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:19,203 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] [2022-01-19 05:00:19,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 05:00:19,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 05:00:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1132503556, now seen corresponding path program 1 times [2022-01-19 05:00:19,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:19,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676255411] [2022-01-19 05:00:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:19,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:19,341 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 05:00:19,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:19,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676255411] [2022-01-19 05:00:19,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676255411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:19,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:19,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:19,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163623505] [2022-01-19 05:00:19,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:19,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:19,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:19,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 75 [2022-01-19 05:00:19,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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 05:00:19,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:19,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 75 [2022-01-19 05:00:19,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:19,431 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2022-01-19 05:00:19,431 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-01-19 05:00:19,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 67 events. 2/67 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2022-01-19 05:00:19,432 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2022-01-19 05:00:19,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 60 transitions, 214 flow [2022-01-19 05:00:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 05:00:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 05:00:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 471 transitions. [2022-01-19 05:00:19,436 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.785 [2022-01-19 05:00:19,436 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 471 transitions. [2022-01-19 05:00:19,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 471 transitions. [2022-01-19 05:00:19,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:19,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 471 transitions. [2022-01-19 05:00:19,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.875) internal successors, (471), 8 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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 05:00:19,440 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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 05:00:19,440 INFO L186 Difference]: Start difference. First operand has 85 places, 61 transitions, 186 flow. Second operand 8 states and 471 transitions. [2022-01-19 05:00:19,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 60 transitions, 214 flow [2022-01-19 05:00:19,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 168 flow, removed 13 selfloop flow, removed 13 redundant places. [2022-01-19 05:00:19,444 INFO L242 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2022-01-19 05:00:19,444 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2022-01-19 05:00:19,446 INFO L334 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2022-01-19 05:00:19,446 INFO L470 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2022-01-19 05:00:19,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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 05:00:19,449 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 05:00:19,450 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 05:00:19,450 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 05:00:19,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 05:00:19,453 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-19 05:00:19,456 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 05:00:19,456 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 05:00:19,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 05:00:19 BasicIcfg [2022-01-19 05:00:19,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 05:00:19,465 INFO L158 Benchmark]: Toolchain (without parser) took 2938.46ms. Allocated memory is still 337.6MB. Free memory was 282.5MB in the beginning and 139.0MB in the end (delta: 143.4MB). Peak memory consumption was 143.4MB. Max. memory is 16.0GB. [2022-01-19 05:00:19,465 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 337.6MB. Free memory is still 300.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 05:00:19,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.92ms. Allocated memory is still 337.6MB. Free memory was 282.2MB in the beginning and 301.6MB in the end (delta: -19.3MB). Peak memory consumption was 17.6MB. Max. memory is 16.0GB. [2022-01-19 05:00:19,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.49ms. Allocated memory is still 337.6MB. Free memory was 301.6MB in the beginning and 299.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:19,469 INFO L158 Benchmark]: Boogie Preprocessor took 31.73ms. Allocated memory is still 337.6MB. Free memory was 299.1MB in the beginning and 297.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:19,473 INFO L158 Benchmark]: RCFGBuilder took 295.26ms. Allocated memory is still 337.6MB. Free memory was 297.4MB in the beginning and 284.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 05:00:19,474 INFO L158 Benchmark]: TraceAbstraction took 2065.26ms. Allocated memory is still 337.6MB. Free memory was 283.7MB in the beginning and 139.0MB in the end (delta: 144.7MB). Peak memory consumption was 144.7MB. Max. memory is 16.0GB. [2022-01-19 05:00:19,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 337.6MB. Free memory is still 300.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 485.92ms. Allocated memory is still 337.6MB. Free memory was 282.2MB in the beginning and 301.6MB in the end (delta: -19.3MB). Peak memory consumption was 17.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.49ms. Allocated memory is still 337.6MB. Free memory was 301.6MB in the beginning and 299.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.73ms. Allocated memory is still 337.6MB. Free memory was 299.1MB in the beginning and 297.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 295.26ms. Allocated memory is still 337.6MB. Free memory was 297.4MB in the beginning and 284.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2065.26ms. Allocated memory is still 337.6MB. Free memory was 283.7MB in the beginning and 139.0MB in the end (delta: 144.7MB). Peak memory consumption was 144.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 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: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 143 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 192 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 33 mSDtfsCounter, 192 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=4, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 775 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 05:00:19,505 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...