/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:09:16,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:09:16,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:09:16,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:09:16,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:09:16,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:09:16,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:09:16,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:09:16,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:09:16,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:09:16,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:09:16,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:09:16,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:09:16,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:09:16,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:09:16,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:09:16,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:09:16,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:09:16,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:09:16,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:09:16,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:09:16,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:09:16,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:09:16,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:09:16,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 11:09:16,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 11:09:16,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 11:09:16,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 11:09:16,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 11:09:16,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 11:09:16,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:09:16,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:09:16,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:09:16,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:09:16,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:09:16,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:09:16,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:09:16,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:09:16,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:09:16,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:09:16,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:09:16,706 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-VariableLbe.epf [2021-03-24 11:09:16,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:09:16,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:09:16,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:09:16,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:09:16,735 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:09:16,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:09:16,735 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:09:16,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:09:16,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:09:16,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:09:16,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:09:16,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:09:16,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:09:16,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:09:16,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:09:16,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:09:16,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:09:16,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:09:16,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:09:16,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:09:16,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:09:16,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:09:16,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:09:16,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:09:16,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:09:16,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:09:16,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:09:16,738 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:09:16,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:09:16,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:09:16,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:09:16,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:09:16,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:09:16,996 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:09:16,997 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:09:16,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2021-03-24 11:09:17,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4559e9ce7/72f3661bdca2458baa022a56e37d5605/FLAG056866e54 [2021-03-24 11:09:17,437 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:09:17,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2021-03-24 11:09:17,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4559e9ce7/72f3661bdca2458baa022a56e37d5605/FLAG056866e54 [2021-03-24 11:09:17,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4559e9ce7/72f3661bdca2458baa022a56e37d5605 [2021-03-24 11:09:17,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:09:17,471 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:09:17,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:09:17,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:09:17,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:09:17,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4247c596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17, skipping insertion in model container [2021-03-24 11:09:17,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:09:17,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:09:17,671 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i[950,963] [2021-03-24 11:09:17,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:09:17,800 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:09:17,807 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i[950,963] [2021-03-24 11:09:17,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:09:17,885 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:09:17,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17 WrapperNode [2021-03-24 11:09:17,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:09:17,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:09:17,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:09:17,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:09:17,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:09:17,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:09:17,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:09:17,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:09:17,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... [2021-03-24 11:09:17,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:09:17,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:09:17,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:09:17,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:09:17,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:09:18,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:09:18,045 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:09:18,046 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:09:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:09:18,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:09:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:09:18,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:09:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-24 11:09:18,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-24 11:09:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:09:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:09:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:09:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:09:18,050 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:09:18,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:09:18,310 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:09:18,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:09:18 BoogieIcfgContainer [2021-03-24 11:09:18,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:09:18,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:09:18,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:09:18,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:09:18,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:09:17" (1/3) ... [2021-03-24 11:09:18,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf2af15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:09:18, skipping insertion in model container [2021-03-24 11:09:18,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:17" (2/3) ... [2021-03-24 11:09:18,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf2af15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:09:18, skipping insertion in model container [2021-03-24 11:09:18,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:09:18" (3/3) ... [2021-03-24 11:09:18,316 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2021-03-24 11:09:18,320 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:09:18,322 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:09:18,323 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:09:18,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,356 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,356 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,359 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,359 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,359 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,359 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,359 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,360 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,360 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,361 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,361 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,361 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,361 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,361 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,361 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,361 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,361 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,362 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,362 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,362 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,362 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,363 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,364 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,364 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,367 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,369 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,370 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,370 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,370 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,371 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,372 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:18,373 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:09:18,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 11:09:18,398 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:09:18,399 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:09:18,399 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:09:18,399 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:09:18,399 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:09:18,399 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:09:18,399 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:09:18,399 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:09:18,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2021-03-24 11:09:18,432 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-03-24 11:09:18,432 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:18,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-03-24 11:09:18,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 91 transitions, 202 flow [2021-03-24 11:09:18,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 73 transitions, 158 flow [2021-03-24 11:09:18,438 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:09:18,444 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-24 11:09:18,446 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-24 11:09:18,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 73 transitions, 158 flow [2021-03-24 11:09:18,459 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-03-24 11:09:18,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:18,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 11:09:18,461 INFO L142 LiptonReduction]: Number of co-enabled transitions 1392 [2021-03-24 11:09:19,491 INFO L154 LiptonReduction]: Checked pairs total: 1938 [2021-03-24 11:09:19,492 INFO L156 LiptonReduction]: Total number of compositions: 46 [2021-03-24 11:09:19,493 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1056 [2021-03-24 11:09:19,500 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-24 11:09:19,500 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:19,500 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:19,500 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:19,501 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:19,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:19,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1692446056, now seen corresponding path program 1 times [2021-03-24 11:09:19,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:19,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192169083] [2021-03-24 11:09:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:19,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:19,652 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:19,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:19,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192169083] [2021-03-24 11:09:19,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:19,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:09:19,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254816051] [2021-03-24 11:09:19,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:09:19,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:19,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:09:19,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:09:19,675 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 11:09:19,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:19,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 11:09:19,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:19,704 INFO L129 PetriNetUnfolder]: 45/141 cut-off events. [2021-03-24 11:09:19,704 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:19,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 141 events. 45/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 606 event pairs, 23 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 216. Up to 76 conditions per place. [2021-03-24 11:09:19,706 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 6 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2021-03-24 11:09:19,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 96 flow [2021-03-24 11:09:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:09:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:09:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-03-24 11:09:19,715 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8467153284671532 [2021-03-24 11:09:19,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-03-24 11:09:19,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-03-24 11:09:19,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:19,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-03-24 11:09:19,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,725 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 66 flow. Second operand 3 states and 348 transitions. [2021-03-24 11:09:19,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 96 flow [2021-03-24 11:09:19,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 11:09:19,729 INFO L241 Difference]: Finished difference. Result has 39 places, 31 transitions, 95 flow [2021-03-24 11:09:19,730 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2021-03-24 11:09:19,730 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2021-03-24 11:09:19,731 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 95 flow [2021-03-24 11:09:19,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,731 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:19,731 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:19,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:09:19,731 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:19,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:19,732 INFO L82 PathProgramCache]: Analyzing trace with hash 2088650593, now seen corresponding path program 1 times [2021-03-24 11:09:19,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:19,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557689975] [2021-03-24 11:09:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:19,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:19,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:19,782 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:19,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:19,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557689975] [2021-03-24 11:09:19,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:19,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:19,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920965572] [2021-03-24 11:09:19,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:19,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:19,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:19,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:19,792 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 11:09:19,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:19,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 11:09:19,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:19,808 INFO L129 PetriNetUnfolder]: 29/98 cut-off events. [2021-03-24 11:09:19,808 INFO L130 PetriNetUnfolder]: For 28/205 co-relation queries the response was YES. [2021-03-24 11:09:19,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 98 events. 29/98 cut-off events. For 28/205 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 344 event pairs, 2 based on Foata normal form. 3/91 useless extension candidates. Maximal degree in co-relation 206. Up to 53 conditions per place. [2021-03-24 11:09:19,809 INFO L132 encePairwiseOnDemand]: 134/137 looper letters, 11 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2021-03-24 11:09:19,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 135 flow [2021-03-24 11:09:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:09:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:09:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-03-24 11:09:19,811 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442822384428224 [2021-03-24 11:09:19,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-03-24 11:09:19,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-03-24 11:09:19,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:19,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-03-24 11:09:19,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,814 INFO L185 Difference]: Start difference. First operand has 39 places, 31 transitions, 95 flow. Second operand 3 states and 347 transitions. [2021-03-24 11:09:19,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 135 flow [2021-03-24 11:09:19,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:09:19,815 INFO L241 Difference]: Finished difference. Result has 41 places, 31 transitions, 101 flow [2021-03-24 11:09:19,815 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2021-03-24 11:09:19,815 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2021-03-24 11:09:19,815 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 101 flow [2021-03-24 11:09:19,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,816 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:19,816 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:19,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:09:19,816 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:19,816 INFO L82 PathProgramCache]: Analyzing trace with hash -926220483, now seen corresponding path program 1 times [2021-03-24 11:09:19,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:19,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605850846] [2021-03-24 11:09:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:19,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:19,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:19,848 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:19,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:19,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605850846] [2021-03-24 11:09:19,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:19,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:19,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138552295] [2021-03-24 11:09:19,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:19,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:19,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:19,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:19,856 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 11:09:19,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:19,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 11:09:19,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:19,871 INFO L129 PetriNetUnfolder]: 21/84 cut-off events. [2021-03-24 11:09:19,872 INFO L130 PetriNetUnfolder]: For 56/261 co-relation queries the response was YES. [2021-03-24 11:09:19,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 84 events. 21/84 cut-off events. For 56/261 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 287 event pairs, 1 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 184. Up to 41 conditions per place. [2021-03-24 11:09:19,872 INFO L132 encePairwiseOnDemand]: 133/137 looper letters, 10 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2021-03-24 11:09:19,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 144 flow [2021-03-24 11:09:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2021-03-24 11:09:19,875 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8375912408759124 [2021-03-24 11:09:19,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2021-03-24 11:09:19,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2021-03-24 11:09:19,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:19,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2021-03-24 11:09:19,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,878 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,878 INFO L185 Difference]: Start difference. First operand has 41 places, 31 transitions, 101 flow. Second operand 4 states and 459 transitions. [2021-03-24 11:09:19,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 144 flow [2021-03-24 11:09:19,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:09:19,879 INFO L241 Difference]: Finished difference. Result has 43 places, 31 transitions, 108 flow [2021-03-24 11:09:19,879 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2021-03-24 11:09:19,879 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2021-03-24 11:09:19,879 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 108 flow [2021-03-24 11:09:19,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,880 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:19,880 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:19,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:09:19,880 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:19,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1381579061, now seen corresponding path program 1 times [2021-03-24 11:09:19,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:19,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958373250] [2021-03-24 11:09:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:19,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:19,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:19,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:19,912 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:19,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:19,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958373250] [2021-03-24 11:09:19,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:19,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:09:19,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119373855] [2021-03-24 11:09:19,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:09:19,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:19,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:09:19,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:09:19,921 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 137 [2021-03-24 11:09:19,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:19,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 137 [2021-03-24 11:09:19,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:19,942 INFO L129 PetriNetUnfolder]: 30/111 cut-off events. [2021-03-24 11:09:19,942 INFO L130 PetriNetUnfolder]: For 102/470 co-relation queries the response was YES. [2021-03-24 11:09:19,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 111 events. 30/111 cut-off events. For 102/470 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 480 event pairs, 6 based on Foata normal form. 9/112 useless extension candidates. Maximal degree in co-relation 265. Up to 52 conditions per place. [2021-03-24 11:09:19,943 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 12 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2021-03-24 11:09:19,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 171 flow [2021-03-24 11:09:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2021-03-24 11:09:19,944 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8102189781021898 [2021-03-24 11:09:19,945 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 444 transitions. [2021-03-24 11:09:19,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 444 transitions. [2021-03-24 11:09:19,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:19,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 444 transitions. [2021-03-24 11:09:19,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,947 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,947 INFO L185 Difference]: Start difference. First operand has 43 places, 31 transitions, 108 flow. Second operand 4 states and 444 transitions. [2021-03-24 11:09:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 171 flow [2021-03-24 11:09:19,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 159 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 11:09:19,949 INFO L241 Difference]: Finished difference. Result has 45 places, 30 transitions, 113 flow [2021-03-24 11:09:19,949 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2021-03-24 11:09:19,949 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2021-03-24 11:09:19,949 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 113 flow [2021-03-24 11:09:19,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:19,950 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:19,950 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:19,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:09:19,950 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:19,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:19,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2130959821, now seen corresponding path program 1 times [2021-03-24 11:09:19,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:19,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572271716] [2021-03-24 11:09:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:19,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:19,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:19,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:20,009 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:20,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:20,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572271716] [2021-03-24 11:09:20,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:20,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:20,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572439070] [2021-03-24 11:09:20,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:20,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:20,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:20,017 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 11:09:20,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:20,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 11:09:20,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:20,029 INFO L129 PetriNetUnfolder]: 9/57 cut-off events. [2021-03-24 11:09:20,029 INFO L130 PetriNetUnfolder]: For 60/171 co-relation queries the response was YES. [2021-03-24 11:09:20,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 57 events. 9/57 cut-off events. For 60/171 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 153 event pairs, 3 based on Foata normal form. 6/62 useless extension candidates. Maximal degree in co-relation 127. Up to 22 conditions per place. [2021-03-24 11:09:20,029 INFO L132 encePairwiseOnDemand]: 134/137 looper letters, 10 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2021-03-24 11:09:20,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 156 flow [2021-03-24 11:09:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:09:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:09:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-03-24 11:09:20,034 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442822384428224 [2021-03-24 11:09:20,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-03-24 11:09:20,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-03-24 11:09:20,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:20,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-03-24 11:09:20,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,036 INFO L185 Difference]: Start difference. First operand has 45 places, 30 transitions, 113 flow. Second operand 3 states and 347 transitions. [2021-03-24 11:09:20,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 156 flow [2021-03-24 11:09:20,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 140 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 11:09:20,037 INFO L241 Difference]: Finished difference. Result has 44 places, 30 transitions, 110 flow [2021-03-24 11:09:20,037 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2021-03-24 11:09:20,037 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2021-03-24 11:09:20,038 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 110 flow [2021-03-24 11:09:20,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,038 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:20,038 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:20,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:09:20,038 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1812317452, now seen corresponding path program 1 times [2021-03-24 11:09:20,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:20,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850700044] [2021-03-24 11:09:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:20,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:20,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:20,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:20,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:20,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:20,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:20,111 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:20,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:20,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850700044] [2021-03-24 11:09:20,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:20,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:09:20,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910742383] [2021-03-24 11:09:20,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:09:20,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:20,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:09:20,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:09:20,121 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 137 [2021-03-24 11:09:20,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:20,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 137 [2021-03-24 11:09:20,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:20,144 INFO L129 PetriNetUnfolder]: 16/86 cut-off events. [2021-03-24 11:09:20,144 INFO L130 PetriNetUnfolder]: For 96/249 co-relation queries the response was YES. [2021-03-24 11:09:20,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 86 events. 16/86 cut-off events. For 96/249 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 344 event pairs, 3 based on Foata normal form. 7/90 useless extension candidates. Maximal degree in co-relation 195. Up to 33 conditions per place. [2021-03-24 11:09:20,145 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 9 selfloop transitions, 4 changer transitions 4/35 dead transitions. [2021-03-24 11:09:20,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 170 flow [2021-03-24 11:09:20,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2021-03-24 11:09:20,146 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8102189781021898 [2021-03-24 11:09:20,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 444 transitions. [2021-03-24 11:09:20,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 444 transitions. [2021-03-24 11:09:20,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:20,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 444 transitions. [2021-03-24 11:09:20,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,149 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,149 INFO L185 Difference]: Start difference. First operand has 44 places, 30 transitions, 110 flow. Second operand 4 states and 444 transitions. [2021-03-24 11:09:20,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 170 flow [2021-03-24 11:09:20,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:09:20,152 INFO L241 Difference]: Finished difference. Result has 47 places, 29 transitions, 118 flow [2021-03-24 11:09:20,152 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2021-03-24 11:09:20,152 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2021-03-24 11:09:20,153 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 118 flow [2021-03-24 11:09:20,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,153 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:20,153 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:20,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:09:20,153 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:20,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:20,159 INFO L82 PathProgramCache]: Analyzing trace with hash 34925400, now seen corresponding path program 1 times [2021-03-24 11:09:20,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:20,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781717146] [2021-03-24 11:09:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:20,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:20,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:20,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:20,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:20,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:20,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:20,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781717146] [2021-03-24 11:09:20,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:20,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:20,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770097183] [2021-03-24 11:09:20,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:20,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:20,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:20,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:20,215 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 137 [2021-03-24 11:09:20,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:20,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 137 [2021-03-24 11:09:20,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:20,236 INFO L129 PetriNetUnfolder]: 3/42 cut-off events. [2021-03-24 11:09:20,236 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2021-03-24 11:09:20,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 42 events. 3/42 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 2 based on Foata normal form. 2/43 useless extension candidates. Maximal degree in co-relation 84. Up to 13 conditions per place. [2021-03-24 11:09:20,237 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 1 selfloop transitions, 4 changer transitions 3/30 dead transitions. [2021-03-24 11:09:20,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 30 transitions, 137 flow [2021-03-24 11:09:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 488 transitions. [2021-03-24 11:09:20,238 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8905109489051095 [2021-03-24 11:09:20,238 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 488 transitions. [2021-03-24 11:09:20,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 488 transitions. [2021-03-24 11:09:20,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:20,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 488 transitions. [2021-03-24 11:09:20,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,242 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,242 INFO L185 Difference]: Start difference. First operand has 47 places, 29 transitions, 118 flow. Second operand 4 states and 488 transitions. [2021-03-24 11:09:20,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 30 transitions, 137 flow [2021-03-24 11:09:20,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 30 transitions, 118 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-24 11:09:20,244 INFO L241 Difference]: Finished difference. Result has 47 places, 27 transitions, 108 flow [2021-03-24 11:09:20,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2021-03-24 11:09:20,244 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2021-03-24 11:09:20,244 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 108 flow [2021-03-24 11:09:20,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,245 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:20,245 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:20,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:09:20,245 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:20,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:20,246 INFO L82 PathProgramCache]: Analyzing trace with hash -907986812, now seen corresponding path program 1 times [2021-03-24 11:09:20,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:20,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101332688] [2021-03-24 11:09:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:20,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:20,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:20,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:20,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:20,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:20,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:20,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101332688] [2021-03-24 11:09:20,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:20,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:20,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012955194] [2021-03-24 11:09:20,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:20,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:20,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:20,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:20,299 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 137 [2021-03-24 11:09:20,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:20,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 137 [2021-03-24 11:09:20,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:20,309 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-24 11:09:20,310 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-03-24 11:09:20,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 26 events. 0/26 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-24 11:09:20,310 INFO L132 encePairwiseOnDemand]: 133/137 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 11:09:20,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 26 transitions, 104 flow [2021-03-24 11:09:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:20,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 486 transitions. [2021-03-24 11:09:20,312 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8868613138686131 [2021-03-24 11:09:20,312 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 486 transitions. [2021-03-24 11:09:20,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 486 transitions. [2021-03-24 11:09:20,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:20,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 486 transitions. [2021-03-24 11:09:20,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,314 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,314 INFO L185 Difference]: Start difference. First operand has 47 places, 27 transitions, 108 flow. Second operand 4 states and 486 transitions. [2021-03-24 11:09:20,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 26 transitions, 104 flow [2021-03-24 11:09:20,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-03-24 11:09:20,315 INFO L241 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2021-03-24 11:09:20,315 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2021-03-24 11:09:20,316 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2021-03-24 11:09:20,316 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2021-03-24 11:09:20,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:20,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:09:20,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:09:20 BasicIcfg [2021-03-24 11:09:20,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:09:20,321 INFO L168 Benchmark]: Toolchain (without parser) took 2848.40 ms. Allocated memory was 350.2 MB in the beginning and 434.1 MB in the end (delta: 83.9 MB). Free memory was 313.4 MB in the beginning and 365.1 MB in the end (delta: -51.7 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:20,322 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 350.2 MB. Free memory is still 331.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:09:20,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.90 ms. Allocated memory is still 350.2 MB. Free memory was 313.1 MB in the beginning and 312.4 MB in the end (delta: 714.2 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:20,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.38 ms. Allocated memory is still 350.2 MB. Free memory was 312.4 MB in the beginning and 310.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:20,325 INFO L168 Benchmark]: Boogie Preprocessor took 20.33 ms. Allocated memory is still 350.2 MB. Free memory was 310.3 MB in the beginning and 308.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:20,325 INFO L168 Benchmark]: RCFGBuilder took 361.20 ms. Allocated memory is still 350.2 MB. Free memory was 308.2 MB in the beginning and 282.0 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:20,326 INFO L168 Benchmark]: TraceAbstraction took 2006.46 ms. Allocated memory was 350.2 MB in the beginning and 434.1 MB in the end (delta: 83.9 MB). Free memory was 280.9 MB in the beginning and 365.1 MB in the end (delta: -84.2 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:20,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 350.2 MB. Free memory is still 331.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 412.90 ms. Allocated memory is still 350.2 MB. Free memory was 313.1 MB in the beginning and 312.4 MB in the end (delta: 714.2 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.38 ms. Allocated memory is still 350.2 MB. Free memory was 312.4 MB in the beginning and 310.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.33 ms. Allocated memory is still 350.2 MB. Free memory was 310.3 MB in the beginning and 308.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 361.20 ms. Allocated memory is still 350.2 MB. Free memory was 308.2 MB in the beginning and 282.0 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2006.46 ms. Allocated memory was 350.2 MB in the beginning and 434.1 MB in the end (delta: 83.9 MB). Free memory was 280.9 MB in the beginning and 365.1 MB in the end (delta: -84.2 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1045.9ms, 85 PlacesBefore, 40 PlacesAfterwards, 73 TransitionsBefore, 27 TransitionsAfterwards, 1392 CoEnabledTransitionPairs, 4 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1076, positive: 1024, positive conditional: 0, positive unconditional: 1024, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 693, positive: 667, positive conditional: 0, positive unconditional: 667, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 693, positive: 667, positive conditional: 0, positive unconditional: 667, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1076, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 693, unknown conditional: 0, unknown unconditional: 693] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1920.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 236.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1096.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 35 SDslu, 28 SDs, 0 SdLazy, 54 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 36.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=6, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.5ms SsaConstructionTime, 130.9ms SatisfiabilityAnalysisTime, 317.3ms InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 786 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! Received shutdown request...