./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe024_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:20:30,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:20:30,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:20:30,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:20:30,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:20:30,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:20:30,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:20:30,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:20:30,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:20:30,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:20:30,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:20:30,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:20:30,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:20:30,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:20:30,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:20:30,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:20:30,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:20:30,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:20:30,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:20:30,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:20:30,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:20:30,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:20:30,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:20:30,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:20:30,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:20:30,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:20:30,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:20:30,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:20:30,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:20:30,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:20:30,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:20:30,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:20:30,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:20:30,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:20:30,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:20:30,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:20:30,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:20:30,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:20:30,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:20:30,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:20:30,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:20:30,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:20:30,804 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:20:30,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:20:30,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:20:30,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:20:30,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:20:30,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:20:30,814 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:20:30,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:20:30,815 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:20:30,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:20:30,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:20:30,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:20:30,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:20:30,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:20:30,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:20:30,817 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:20:30,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:20:30,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:20:30,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:20:30,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:20:30,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:20:30,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:20:30,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:20:30,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:20:30,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:20:30,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:20:30,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:20:30,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:20:30,820 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:20:30,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:20:30,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:20:30,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:20:30,823 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f830c559346dfed293d38cb3f451f57bf45496349320c2696ae4150a4c0c44e9 [2021-10-28 23:20:31,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:20:31,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:20:31,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:20:31,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:20:31,126 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:20:31,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/pthread-wmm/safe024_tso.i [2021-10-28 23:20:31,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/data/f19b294a5/5aad969e1fb84afb8bcbc469d3191dc6/FLAG5fc32ac3b [2021-10-28 23:20:31,767 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:20:31,767 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/sv-benchmarks/c/pthread-wmm/safe024_tso.i [2021-10-28 23:20:31,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/data/f19b294a5/5aad969e1fb84afb8bcbc469d3191dc6/FLAG5fc32ac3b [2021-10-28 23:20:32,080 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/data/f19b294a5/5aad969e1fb84afb8bcbc469d3191dc6 [2021-10-28 23:20:32,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:20:32,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:20:32,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:20:32,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:20:32,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:20:32,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7d3ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32, skipping insertion in model container [2021-10-28 23:20:32,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:20:32,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:20:32,340 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2021-10-28 23:20:32,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:20:32,599 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:20:32,612 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/sv-benchmarks/c/pthread-wmm/safe024_tso.i[945,958] [2021-10-28 23:20:32,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:20:32,716 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:20:32,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32 WrapperNode [2021-10-28 23:20:32,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:20:32,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:20:32,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:20:32,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:20:32,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:20:32,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:20:32,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:20:32,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:20:32,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:20:32,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:20:32,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:20:32,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:20:32,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (1/1) ... [2021-10-28 23:20:32,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:20:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:20:32,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:20:32,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:20:32,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:20:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:20:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:20:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:20:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 23:20:32,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 23:20:32,937 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 23:20:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 23:20:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 23:20:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 23:20:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:20:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:20:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:20:32,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:20:32,940 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:20:33,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:20:33,370 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 23:20:33,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:33 BoogieIcfgContainer [2021-10-28 23:20:33,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:20:33,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:20:33,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:20:33,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:20:33,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:20:32" (1/3) ... [2021-10-28 23:20:33,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ca119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:20:33, skipping insertion in model container [2021-10-28 23:20:33,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:20:32" (2/3) ... [2021-10-28 23:20:33,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ca119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:20:33, skipping insertion in model container [2021-10-28 23:20:33,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:33" (3/3) ... [2021-10-28 23:20:33,382 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2021-10-28 23:20:33,388 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:20:33,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:20:33,388 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:20:33,389 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:20:33,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,430 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,430 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,431 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,431 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,431 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,431 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,433 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,433 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,434 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,434 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,435 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,443 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,443 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,445 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,445 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,446 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,446 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,447 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,447 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,449 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,449 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,454 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,454 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,465 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,475 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:20:33,483 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 23:20:33,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:20:33,536 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:20:33,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 23:20:33,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2021-10-28 23:20:33,603 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-10-28 23:20:33,603 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:20:33,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-28 23:20:33,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2021-10-28 23:20:33,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2021-10-28 23:20:33,648 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2021-10-28 23:20:33,648 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:20:33,648 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:20:33,649 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:33,649 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:20:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2068302952, now seen corresponding path program 1 times [2021-10-28 23:20:33,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:33,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313995982] [2021-10-28 23:20:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:33,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:34,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:34,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313995982] [2021-10-28 23:20:34,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313995982] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:34,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:34,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:20:34,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824634475] [2021-10-28 23:20:34,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:20:34,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:20:34,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:20:34,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 85 [2021-10-28 23:20:34,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2021-10-28 23:20:34,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:20:34,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 85 [2021-10-28 23:20:34,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:20:34,344 INFO L129 PetriNetUnfolder]: 3/92 cut-off events. [2021-10-28 23:20:34,344 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:20:34,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 4/95 useless extension candidates. Maximal degree in co-relation 90. Up to 7 conditions per place. [2021-10-28 23:20:34,346 INFO L132 encePairwiseOnDemand]: 78/85 looper letters, 6 selfloop transitions, 2 changer transitions 11/79 dead transitions. [2021-10-28 23:20:34,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 203 flow [2021-10-28 23:20:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:20:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:20:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 679 transitions. [2021-10-28 23:20:34,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8875816993464052 [2021-10-28 23:20:34,371 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 679 transitions. [2021-10-28 23:20:34,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 679 transitions. [2021-10-28 23:20:34,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:20:34,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 679 transitions. [2021-10-28 23:20:34,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.44444444444444) internal successors, (679), 9 states have internal predecessors, (679), 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) [2021-10-28 23:20:34,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-10-28 23:20:34,405 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-10-28 23:20:34,406 INFO L186 Difference]: Start difference. First operand has 79 places, 70 transitions, 149 flow. Second operand 9 states and 679 transitions. [2021-10-28 23:20:34,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 203 flow [2021-10-28 23:20:34,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 200 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 23:20:34,419 INFO L242 Difference]: Finished difference. Result has 91 places, 68 transitions, 162 flow [2021-10-28 23:20:34,421 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2021-10-28 23:20:34,422 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2021-10-28 23:20:34,423 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 162 flow [2021-10-28 23:20:34,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2021-10-28 23:20:34,423 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:20:34,424 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:34,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:20:34,425 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:20:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash 909294711, now seen corresponding path program 1 times [2021-10-28 23:20:34,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:34,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936858035] [2021-10-28 23:20:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:34,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:34,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:34,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936858035] [2021-10-28 23:20:34,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936858035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:34,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:34,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:20:34,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696422526] [2021-10-28 23:20:34,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:20:34,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:20:34,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:20:34,717 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-28 23:20:34,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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) [2021-10-28 23:20:34,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:20:34,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-28 23:20:34,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:20:34,911 INFO L129 PetriNetUnfolder]: 4/89 cut-off events. [2021-10-28 23:20:34,911 INFO L130 PetriNetUnfolder]: For 17/24 co-relation queries the response was YES. [2021-10-28 23:20:34,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 89 events. 4/89 cut-off events. For 17/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 136. Up to 7 conditions per place. [2021-10-28 23:20:34,914 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 6 selfloop transitions, 4 changer transitions 12/80 dead transitions. [2021-10-28 23:20:34,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 80 transitions, 253 flow [2021-10-28 23:20:34,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:20:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:20:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 734 transitions. [2021-10-28 23:20:34,918 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8635294117647059 [2021-10-28 23:20:34,918 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 734 transitions. [2021-10-28 23:20:34,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 734 transitions. [2021-10-28 23:20:34,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:20:34,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 734 transitions. [2021-10-28 23:20:34,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.4) internal successors, (734), 10 states have internal predecessors, (734), 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) [2021-10-28 23:20:34,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-28 23:20:34,926 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-28 23:20:34,926 INFO L186 Difference]: Start difference. First operand has 91 places, 68 transitions, 162 flow. Second operand 10 states and 734 transitions. [2021-10-28 23:20:34,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 80 transitions, 253 flow [2021-10-28 23:20:34,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 219 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-10-28 23:20:34,932 INFO L242 Difference]: Finished difference. Result has 93 places, 68 transitions, 176 flow [2021-10-28 23:20:34,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=93, PETRI_TRANSITIONS=68} [2021-10-28 23:20:34,933 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 14 predicate places. [2021-10-28 23:20:34,933 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 68 transitions, 176 flow [2021-10-28 23:20:34,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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) [2021-10-28 23:20:34,935 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:20:34,936 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:34,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:20:34,936 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:20:34,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1604309580, now seen corresponding path program 1 times [2021-10-28 23:20:34,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:34,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132768171] [2021-10-28 23:20:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:34,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:35,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:35,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:35,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132768171] [2021-10-28 23:20:35,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132768171] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:35,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:35,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:20:35,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980255537] [2021-10-28 23:20:35,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:20:35,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:20:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:20:35,150 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-28 23:20:35,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 68 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-10-28 23:20:35,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:20:35,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-28 23:20:35,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:20:35,362 INFO L129 PetriNetUnfolder]: 91/289 cut-off events. [2021-10-28 23:20:35,362 INFO L130 PetriNetUnfolder]: For 47/48 co-relation queries the response was YES. [2021-10-28 23:20:35,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 289 events. 91/289 cut-off events. For 47/48 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1303 event pairs, 2 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 505. Up to 81 conditions per place. [2021-10-28 23:20:35,370 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 10 selfloop transitions, 6 changer transitions 19/93 dead transitions. [2021-10-28 23:20:35,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 296 flow [2021-10-28 23:20:35,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:20:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:20:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 676 transitions. [2021-10-28 23:20:35,374 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8836601307189542 [2021-10-28 23:20:35,374 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 676 transitions. [2021-10-28 23:20:35,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 676 transitions. [2021-10-28 23:20:35,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:20:35,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 676 transitions. [2021-10-28 23:20:35,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.11111111111111) internal successors, (676), 9 states have internal predecessors, (676), 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) [2021-10-28 23:20:35,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-10-28 23:20:35,382 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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) [2021-10-28 23:20:35,382 INFO L186 Difference]: Start difference. First operand has 93 places, 68 transitions, 176 flow. Second operand 9 states and 676 transitions. [2021-10-28 23:20:35,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 296 flow [2021-10-28 23:20:35,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 270 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-10-28 23:20:35,392 INFO L242 Difference]: Finished difference. Result has 91 places, 71 transitions, 206 flow [2021-10-28 23:20:35,393 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=206, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2021-10-28 23:20:35,393 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2021-10-28 23:20:35,393 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 206 flow [2021-10-28 23:20:35,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-10-28 23:20:35,394 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:20:35,395 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:35,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:20:35,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:20:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash -24123949, now seen corresponding path program 1 times [2021-10-28 23:20:35,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:35,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371929188] [2021-10-28 23:20:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:35,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:35,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:35,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371929188] [2021-10-28 23:20:35,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371929188] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:35,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:35,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:20:35,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891271266] [2021-10-28 23:20:35,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:20:35,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:20:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:20:35,581 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-28 23:20:35,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2021-10-28 23:20:35,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:20:35,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-28 23:20:35,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:20:35,752 INFO L129 PetriNetUnfolder]: 52/201 cut-off events. [2021-10-28 23:20:35,752 INFO L130 PetriNetUnfolder]: For 291/318 co-relation queries the response was YES. [2021-10-28 23:20:35,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 201 events. 52/201 cut-off events. For 291/318 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 691 event pairs, 0 based on Foata normal form. 13/212 useless extension candidates. Maximal degree in co-relation 547. Up to 75 conditions per place. [2021-10-28 23:20:35,754 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 10 selfloop transitions, 9 changer transitions 19/96 dead transitions. [2021-10-28 23:20:35,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 459 flow [2021-10-28 23:20:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:20:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:20:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 750 transitions. [2021-10-28 23:20:35,758 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2021-10-28 23:20:35,758 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 750 transitions. [2021-10-28 23:20:35,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 750 transitions. [2021-10-28 23:20:35,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:20:35,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 750 transitions. [2021-10-28 23:20:35,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:20:35,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-28 23:20:35,765 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-10-28 23:20:35,765 INFO L186 Difference]: Start difference. First operand has 91 places, 71 transitions, 206 flow. Second operand 10 states and 750 transitions. [2021-10-28 23:20:35,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 459 flow [2021-10-28 23:20:35,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 435 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-10-28 23:20:35,776 INFO L242 Difference]: Finished difference. Result has 97 places, 74 transitions, 274 flow [2021-10-28 23:20:35,776 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=97, PETRI_TRANSITIONS=74} [2021-10-28 23:20:35,777 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2021-10-28 23:20:35,777 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 74 transitions, 274 flow [2021-10-28 23:20:35,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2021-10-28 23:20:35,778 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:20:35,778 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:35,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:20:35,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:20:35,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash 615819224, now seen corresponding path program 1 times [2021-10-28 23:20:35,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:35,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377438261] [2021-10-28 23:20:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:35,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:35,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:35,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377438261] [2021-10-28 23:20:35,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377438261] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:35,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:35,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:20:35,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620399777] [2021-10-28 23:20:35,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:20:35,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:20:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:20:35,989 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-28 23:20:35,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 74 transitions, 274 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-10-28 23:20:35,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:20:35,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-28 23:20:35,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:20:36,190 INFO L129 PetriNetUnfolder]: 16/114 cut-off events. [2021-10-28 23:20:36,191 INFO L130 PetriNetUnfolder]: For 406/463 co-relation queries the response was YES. [2021-10-28 23:20:36,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 114 events. 16/114 cut-off events. For 406/463 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 211 event pairs, 0 based on Foata normal form. 16/129 useless extension candidates. Maximal degree in co-relation 331. Up to 30 conditions per place. [2021-10-28 23:20:36,192 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 4 selfloop transitions, 12 changer transitions 13/87 dead transitions. [2021-10-28 23:20:36,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 87 transitions, 458 flow [2021-10-28 23:20:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:20:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 23:20:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 812 transitions. [2021-10-28 23:20:36,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8684491978609625 [2021-10-28 23:20:36,197 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 812 transitions. [2021-10-28 23:20:36,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 812 transitions. [2021-10-28 23:20:36,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:20:36,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 812 transitions. [2021-10-28 23:20:36,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.81818181818181) internal successors, (812), 11 states have internal predecessors, (812), 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) [2021-10-28 23:20:36,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-10-28 23:20:36,206 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-10-28 23:20:36,206 INFO L186 Difference]: Start difference. First operand has 97 places, 74 transitions, 274 flow. Second operand 11 states and 812 transitions. [2021-10-28 23:20:36,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 87 transitions, 458 flow [2021-10-28 23:20:36,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 87 transitions, 359 flow, removed 39 selfloop flow, removed 10 redundant places. [2021-10-28 23:20:36,213 INFO L242 Difference]: Finished difference. Result has 99 places, 74 transitions, 260 flow [2021-10-28 23:20:36,214 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=260, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2021-10-28 23:20:36,214 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2021-10-28 23:20:36,214 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 260 flow [2021-10-28 23:20:36,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-10-28 23:20:36,215 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:20:36,215 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:36,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:20:36,215 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:20:36,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:36,216 INFO L85 PathProgramCache]: Analyzing trace with hash 67233634, now seen corresponding path program 1 times [2021-10-28 23:20:36,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:36,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536889074] [2021-10-28 23:20:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:36,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:36,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:36,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536889074] [2021-10-28 23:20:36,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536889074] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:36,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:36,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:20:36,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752154945] [2021-10-28 23:20:36,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:20:36,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:36,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:20:36,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:20:36,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-10-28 23:20:36,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 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) [2021-10-28 23:20:36,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:20:36,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-10-28 23:20:36,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:20:36,441 INFO L129 PetriNetUnfolder]: 10/120 cut-off events. [2021-10-28 23:20:36,444 INFO L130 PetriNetUnfolder]: For 130/140 co-relation queries the response was YES. [2021-10-28 23:20:36,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 120 events. 10/120 cut-off events. For 130/140 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 238 event pairs, 0 based on Foata normal form. 1/119 useless extension candidates. Maximal degree in co-relation 231. Up to 21 conditions per place. [2021-10-28 23:20:36,446 INFO L132 encePairwiseOnDemand]: 79/85 looper letters, 9 selfloop transitions, 1 changer transitions 5/79 dead transitions. [2021-10-28 23:20:36,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 79 transitions, 300 flow [2021-10-28 23:20:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:20:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 23:20:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 513 transitions. [2021-10-28 23:20:36,448 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8621848739495799 [2021-10-28 23:20:36,449 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 513 transitions. [2021-10-28 23:20:36,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 513 transitions. [2021-10-28 23:20:36,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:20:36,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 513 transitions. [2021-10-28 23:20:36,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2021-10-28 23:20:36,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 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) [2021-10-28 23:20:36,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 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) [2021-10-28 23:20:36,457 INFO L186 Difference]: Start difference. First operand has 99 places, 74 transitions, 260 flow. Second operand 7 states and 513 transitions. [2021-10-28 23:20:36,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 79 transitions, 300 flow [2021-10-28 23:20:36,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 79 transitions, 218 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-10-28 23:20:36,464 INFO L242 Difference]: Finished difference. Result has 91 places, 74 transitions, 191 flow [2021-10-28 23:20:36,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=191, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2021-10-28 23:20:36,465 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2021-10-28 23:20:36,465 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 191 flow [2021-10-28 23:20:36,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 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) [2021-10-28 23:20:36,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:20:36,467 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:20:36,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:20:36,468 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:20:36,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:20:36,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1905302522, now seen corresponding path program 2 times [2021-10-28 23:20:36,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:20:36,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34877095] [2021-10-28 23:20:36,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:20:36,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:20:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:20:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:20:36,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:20:36,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34877095] [2021-10-28 23:20:36,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34877095] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:20:36,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:20:36,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:20:36,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324551752] [2021-10-28 23:20:36,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:20:36,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:20:36,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:20:36,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:20:36,621 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-10-28 23:20:36,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 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) [2021-10-28 23:20:36,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:20:36,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-10-28 23:20:36,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:20:36,713 INFO L129 PetriNetUnfolder]: 9/115 cut-off events. [2021-10-28 23:20:36,713 INFO L130 PetriNetUnfolder]: For 6/13 co-relation queries the response was YES. [2021-10-28 23:20:36,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 115 events. 9/115 cut-off events. For 6/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 244 event pairs, 0 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 172. Up to 12 conditions per place. [2021-10-28 23:20:36,714 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2021-10-28 23:20:36,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 74 transitions, 220 flow [2021-10-28 23:20:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:20:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 23:20:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 552 transitions. [2021-10-28 23:20:36,717 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8117647058823529 [2021-10-28 23:20:36,717 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 552 transitions. [2021-10-28 23:20:36,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 552 transitions. [2021-10-28 23:20:36,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:20:36,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 552 transitions. [2021-10-28 23:20:36,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.0) internal successors, (552), 8 states have internal predecessors, (552), 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) [2021-10-28 23:20:36,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 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) [2021-10-28 23:20:36,726 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 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) [2021-10-28 23:20:36,727 INFO L186 Difference]: Start difference. First operand has 91 places, 74 transitions, 191 flow. Second operand 8 states and 552 transitions. [2021-10-28 23:20:36,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 74 transitions, 220 flow [2021-10-28 23:20:36,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 74 transitions, 213 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-28 23:20:36,731 INFO L242 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2021-10-28 23:20:36,731 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2021-10-28 23:20:36,731 INFO L334 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2021-10-28 23:20:36,731 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2021-10-28 23:20:36,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 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) [2021-10-28 23:20:36,734 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:20:36,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:20:36,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:20:36,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 23:20:36,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:20:36,739 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-10-28 23:20:36,743 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:20:36,744 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:20:36,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:20:36 BasicIcfg [2021-10-28 23:20:36,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:20:36,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:20:36,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:20:36,748 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:20:36,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:20:33" (3/4) ... [2021-10-28 23:20:36,751 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:20:36,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 23:20:36,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 23:20:36,757 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 23:20:36,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 23:20:36,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:20:36,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:20:36,765 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:20:36,824 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:20:36,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:20:36,826 INFO L168 Benchmark]: Toolchain (without parser) took 4739.59 ms. Allocated memory was 127.9 MB in the beginning and 161.5 MB in the end (delta: 33.6 MB). Free memory was 94.3 MB in the beginning and 64.7 MB in the end (delta: 29.6 MB). Peak memory consumption was 61.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:36,826 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 40.9 MB in the beginning and 40.9 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:36,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.81 ms. Allocated memory is still 127.9 MB. Free memory was 94.0 MB in the beginning and 94.8 MB in the end (delta: -753.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:36,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.80 ms. Allocated memory is still 127.9 MB. Free memory was 94.8 MB in the beginning and 92.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:36,828 INFO L168 Benchmark]: Boogie Preprocessor took 45.25 ms. Allocated memory is still 127.9 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:36,828 INFO L168 Benchmark]: RCFGBuilder took 533.77 ms. Allocated memory is still 127.9 MB. Free memory was 91.3 MB in the beginning and 78.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:36,829 INFO L168 Benchmark]: TraceAbstraction took 3371.83 ms. Allocated memory was 127.9 MB in the beginning and 161.5 MB in the end (delta: 33.6 MB). Free memory was 78.0 MB in the beginning and 67.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:36,829 INFO L168 Benchmark]: Witness Printer took 77.04 ms. Allocated memory is still 161.5 MB. Free memory was 67.8 MB in the beginning and 64.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:36,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 40.9 MB in the beginning and 40.9 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 630.81 ms. Allocated memory is still 127.9 MB. Free memory was 94.0 MB in the beginning and 94.8 MB in the end (delta: -753.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.80 ms. Allocated memory is still 127.9 MB. Free memory was 94.8 MB in the beginning and 92.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.25 ms. Allocated memory is still 127.9 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 533.77 ms. Allocated memory is still 127.9 MB. Free memory was 91.3 MB in the beginning and 78.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3371.83 ms. Allocated memory was 127.9 MB in the beginning and 161.5 MB in the end (delta: 33.6 MB). Free memory was 78.0 MB in the beginning and 67.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. * Witness Printer took 77.04 ms. Allocated memory is still 161.5 MB. Free memory was 67.8 MB in the beginning and 64.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 125 SDslu, 162 SDs, 0 SdLazy, 269 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=4, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 388 ConstructedInterpolants, 0 QuantifiedInterpolants, 1144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:20:36,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5bf7df-4214-4996-a5e2-98f1a0f81256/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...