./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL --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 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:56:26,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:56:26,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:56:26,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:56:26,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:56:26,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:56:26,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:56:26,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:56:26,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:56:26,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:56:26,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:56:27,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:56:27,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:56:27,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:56:27,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:56:27,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:56:27,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:56:27,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:56:27,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:56:27,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:56:27,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:56:27,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:56:27,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:56:27,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:56:27,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:56:27,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:56:27,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:56:27,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:56:27,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:56:27,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:56:27,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:56:27,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:56:27,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:56:27,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:56:27,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:56:27,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:56:27,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:56:27,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:56:27,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:56:27,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:56:27,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:56:27,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:56:27,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:56:27,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:56:27,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:56:27,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:56:27,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:56:27,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:56:27,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:56:27,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:56:27,128 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:56:27,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:56:27,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:56:27,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:56:27,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:56:27,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:56:27,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:56:27,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:56:27,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:56:27,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:56:27,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:56:27,133 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:56:27,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:56:27,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:56:27,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:56:27,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:56:27,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:56:27,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:56:27,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:56:27,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:56:27,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:56:27,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:56:27,139 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:56:27,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:56:27,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:56:27,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:56:27,140 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_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28abced7878c2be916ea5a54f12b603c21b6525f16f4a0aadbf776b589e0bc49 [2021-11-19 04:56:27,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:56:27,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:56:27,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:56:27,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:56:27,467 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:56:27,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/pthread-wmm/safe004_tso.i [2021-11-19 04:56:27,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/data/61dccad5a/630314afeaae405da1e0fae59bbdfd89/FLAGf3efd9a54 [2021-11-19 04:56:28,164 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:56:28,164 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/sv-benchmarks/c/pthread-wmm/safe004_tso.i [2021-11-19 04:56:28,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/data/61dccad5a/630314afeaae405da1e0fae59bbdfd89/FLAGf3efd9a54 [2021-11-19 04:56:28,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/data/61dccad5a/630314afeaae405da1e0fae59bbdfd89 [2021-11-19 04:56:28,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:56:28,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:56:28,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:56:28,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:56:28,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:56:28,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:28" (1/1) ... [2021-11-19 04:56:28,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ca6057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:28, skipping insertion in model container [2021-11-19 04:56:28,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:28" (1/1) ... [2021-11-19 04:56:28,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:56:28,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:56:28,773 WARN L230 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_d2b1cf35-408f-4ceb-a737-1c01fce31703/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2021-11-19 04:56:28,969 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:56:28,978 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:56:28,992 WARN L230 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_d2b1cf35-408f-4ceb-a737-1c01fce31703/sv-benchmarks/c/pthread-wmm/safe004_tso.i[945,958] [2021-11-19 04:56:29,047 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:56:29,103 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:56:29,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29 WrapperNode [2021-11-19 04:56:29,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:56:29,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:56:29,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:56:29,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:56:29,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,199 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-11-19 04:56:29,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:56:29,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:56:29,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:56:29,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:56:29,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:56:29,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:56:29,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:56:29,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:56:29,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (1/1) ... [2021-11-19 04:56:29,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:56:29,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:56:29,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:56:29,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:56:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:56:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 04:56:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:56:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:56:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:56:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-19 04:56:29,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-19 04:56:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-19 04:56:29,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-19 04:56:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-19 04:56:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-19 04:56:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:56:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 04:56:29,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:56:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:56:29,360 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 04:56:29,547 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:56:29,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:56:29,836 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:56:29,846 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:56:29,846 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 04:56:29,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:29 BoogieIcfgContainer [2021-11-19 04:56:29,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:56:29,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:56:29,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:56:29,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:56:29,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:56:28" (1/3) ... [2021-11-19 04:56:29,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31883993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:29, skipping insertion in model container [2021-11-19 04:56:29,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:29" (2/3) ... [2021-11-19 04:56:29,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31883993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:29, skipping insertion in model container [2021-11-19 04:56:29,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:29" (3/3) ... [2021-11-19 04:56:29,861 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2021-11-19 04:56:29,868 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 04:56:29,868 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:56:29,869 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:56:29,883 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 04:56:29,918 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,919 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,919 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,919 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,919 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,919 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,920 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,920 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,920 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,921 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,921 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,921 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,922 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,922 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,922 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,922 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,922 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,923 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,923 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,923 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,924 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,924 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,924 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,924 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,925 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,925 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,925 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,925 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,926 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,926 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,926 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,926 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,927 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,927 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,927 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,927 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,931 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,932 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,932 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,932 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,936 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,936 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,937 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,937 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,938 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,938 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,939 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,939 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 04:56:29,940 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-19 04:56:29,998 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:56:30,006 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 [2021-11-19 04:56:30,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 04:56:30,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2021-11-19 04:56:30,085 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2021-11-19 04:56:30,086 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-19 04:56:30,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 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. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-11-19 04:56:30,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2021-11-19 04:56:30,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2021-11-19 04:56:30,129 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-11-19 04:56:30,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-19 04:56:30,129 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:56:30,130 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] [2021-11-19 04:56:30,131 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:56:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1258848663, now seen corresponding path program 1 times [2021-11-19 04:56:30,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:30,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744177513] [2021-11-19 04:56:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:30,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:30,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:56:30,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744177513] [2021-11-19 04:56:30,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744177513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:30,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:30,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:56:30,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491738668] [2021-11-19 04:56:30,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:30,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:56:30,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:56:30,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:56:30,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:56:30,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-11-19 04:56:30,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2021-11-19 04:56:30,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:56:30,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-11-19 04:56:30,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:56:31,548 INFO L129 PetriNetUnfolder]: 530/1189 cut-off events. [2021-11-19 04:56:31,548 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-11-19 04:56:31,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 1189 events. 530/1189 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7034 event pairs, 38 based on Foata normal form. 41/1180 useless extension candidates. Maximal degree in co-relation 2030. Up to 249 conditions per place. [2021-11-19 04:56:31,578 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 25 selfloop transitions, 7 changer transitions 56/142 dead transitions. [2021-11-19 04:56:31,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 469 flow [2021-11-19 04:56:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 04:56:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-19 04:56:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2021-11-19 04:56:31,614 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8267117497886729 [2021-11-19 04:56:31,615 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2021-11-19 04:56:31,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2021-11-19 04:56:31,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:56:31,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2021-11-19 04:56:31,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 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) [2021-11-19 04:56:31,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-19 04:56:31,657 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-19 04:56:31,659 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 978 transitions. [2021-11-19 04:56:31,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 469 flow [2021-11-19 04:56:31,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 466 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-19 04:56:31,674 INFO L242 Difference]: Finished difference. Result has 104 places, 78 transitions, 252 flow [2021-11-19 04:56:31,677 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=252, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2021-11-19 04:56:31,681 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2021-11-19 04:56:31,682 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 252 flow [2021-11-19 04:56:31,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2021-11-19 04:56:31,683 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:56:31,684 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] [2021-11-19 04:56:31,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:56:31,685 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:56:31,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash -787276515, now seen corresponding path program 1 times [2021-11-19 04:56:31,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:31,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931746518] [2021-11-19 04:56:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:31,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:31,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:56:31,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931746518] [2021-11-19 04:56:31,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931746518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:31,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:31,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 04:56:31,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570528642] [2021-11-19 04:56:31,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:31,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:56:31,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:56:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:56:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:56:31,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-11-19 04:56:31,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 252 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2021-11-19 04:56:31,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:56:31,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-11-19 04:56:31,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:56:32,347 INFO L129 PetriNetUnfolder]: 303/837 cut-off events. [2021-11-19 04:56:32,347 INFO L130 PetriNetUnfolder]: For 1964/3248 co-relation queries the response was YES. [2021-11-19 04:56:32,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 837 events. 303/837 cut-off events. For 1964/3248 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4856 event pairs, 14 based on Foata normal form. 24/830 useless extension candidates. Maximal degree in co-relation 2756. Up to 295 conditions per place. [2021-11-19 04:56:32,363 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 22 selfloop transitions, 10 changer transitions 65/151 dead transitions. [2021-11-19 04:56:32,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 151 transitions, 982 flow [2021-11-19 04:56:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 04:56:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-19 04:56:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 820 transitions. [2021-11-19 04:56:32,368 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8191808191808192 [2021-11-19 04:56:32,368 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 820 transitions. [2021-11-19 04:56:32,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 820 transitions. [2021-11-19 04:56:32,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:56:32,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 820 transitions. [2021-11-19 04:56:32,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.54545454545455) internal successors, (820), 11 states have internal predecessors, (820), 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) [2021-11-19 04:56:32,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2021-11-19 04:56:32,378 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2021-11-19 04:56:32,378 INFO L186 Difference]: Start difference. First operand has 104 places, 78 transitions, 252 flow. Second operand 11 states and 820 transitions. [2021-11-19 04:56:32,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 151 transitions, 982 flow [2021-11-19 04:56:32,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 151 transitions, 959 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-11-19 04:56:32,402 INFO L242 Difference]: Finished difference. Result has 109 places, 79 transitions, 306 flow [2021-11-19 04:56:32,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=306, PETRI_PLACES=109, PETRI_TRANSITIONS=79} [2021-11-19 04:56:32,404 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 26 predicate places. [2021-11-19 04:56:32,404 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 79 transitions, 306 flow [2021-11-19 04:56:32,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 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) [2021-11-19 04:56:32,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:56:32,406 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] [2021-11-19 04:56:32,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:56:32,406 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:56:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:32,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1290802364, now seen corresponding path program 1 times [2021-11-19 04:56:32,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:32,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367357014] [2021-11-19 04:56:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:32,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:32,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:56:32,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367357014] [2021-11-19 04:56:32,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367357014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:32,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:32,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:56:32,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245332218] [2021-11-19 04:56:32,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:32,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:56:32,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:56:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:56:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:56:32,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-11-19 04:56:32,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 79 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 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) [2021-11-19 04:56:32,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:56:32,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-11-19 04:56:32,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:56:32,960 INFO L129 PetriNetUnfolder]: 121/373 cut-off events. [2021-11-19 04:56:32,960 INFO L130 PetriNetUnfolder]: For 1775/2238 co-relation queries the response was YES. [2021-11-19 04:56:32,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 373 events. 121/373 cut-off events. For 1775/2238 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1547 event pairs, 21 based on Foata normal form. 11/367 useless extension candidates. Maximal degree in co-relation 1465. Up to 136 conditions per place. [2021-11-19 04:56:32,967 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 22 selfloop transitions, 7 changer transitions 37/120 dead transitions. [2021-11-19 04:56:32,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 120 transitions, 854 flow [2021-11-19 04:56:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:56:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-19 04:56:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2021-11-19 04:56:32,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8054945054945055 [2021-11-19 04:56:32,972 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2021-11-19 04:56:32,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2021-11-19 04:56:32,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:56:32,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2021-11-19 04:56:32,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 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) [2021-11-19 04:56:32,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-19 04:56:32,981 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-19 04:56:32,982 INFO L186 Difference]: Start difference. First operand has 109 places, 79 transitions, 306 flow. Second operand 10 states and 733 transitions. [2021-11-19 04:56:32,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 120 transitions, 854 flow [2021-11-19 04:56:32,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 120 transitions, 691 flow, removed 60 selfloop flow, removed 9 redundant places. [2021-11-19 04:56:33,001 INFO L242 Difference]: Finished difference. Result has 110 places, 78 transitions, 279 flow [2021-11-19 04:56:33,002 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=279, PETRI_PLACES=110, PETRI_TRANSITIONS=78} [2021-11-19 04:56:33,005 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2021-11-19 04:56:33,006 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 78 transitions, 279 flow [2021-11-19 04:56:33,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 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) [2021-11-19 04:56:33,007 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:56:33,010 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] [2021-11-19 04:56:33,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:56:33,011 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:56:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 402305550, now seen corresponding path program 1 times [2021-11-19 04:56:33,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:33,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087824240] [2021-11-19 04:56:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:33,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:33,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:56:33,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087824240] [2021-11-19 04:56:33,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087824240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:33,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:33,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 04:56:33,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691878564] [2021-11-19 04:56:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:33,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:56:33,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:56:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:56:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:56:33,256 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-11-19 04:56:33,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 78 transitions, 279 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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) [2021-11-19 04:56:33,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:56:33,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-11-19 04:56:33,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:56:33,544 INFO L129 PetriNetUnfolder]: 51/272 cut-off events. [2021-11-19 04:56:33,544 INFO L130 PetriNetUnfolder]: For 625/793 co-relation queries the response was YES. [2021-11-19 04:56:33,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 272 events. 51/272 cut-off events. For 625/793 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1109 event pairs, 2 based on Foata normal form. 13/278 useless extension candidates. Maximal degree in co-relation 807. Up to 61 conditions per place. [2021-11-19 04:56:33,547 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 19 selfloop transitions, 5 changer transitions 42/119 dead transitions. [2021-11-19 04:56:33,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 119 transitions, 745 flow [2021-11-19 04:56:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 04:56:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-19 04:56:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 944 transitions. [2021-11-19 04:56:33,553 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.797971259509721 [2021-11-19 04:56:33,553 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 944 transitions. [2021-11-19 04:56:33,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 944 transitions. [2021-11-19 04:56:33,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:56:33,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 944 transitions. [2021-11-19 04:56:33,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.61538461538461) internal successors, (944), 13 states have internal predecessors, (944), 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) [2021-11-19 04:56:33,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-19 04:56:33,583 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2021-11-19 04:56:33,584 INFO L186 Difference]: Start difference. First operand has 110 places, 78 transitions, 279 flow. Second operand 13 states and 944 transitions. [2021-11-19 04:56:33,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 119 transitions, 745 flow [2021-11-19 04:56:33,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 119 transitions, 660 flow, removed 35 selfloop flow, removed 11 redundant places. [2021-11-19 04:56:33,595 INFO L242 Difference]: Finished difference. Result has 114 places, 72 transitions, 234 flow [2021-11-19 04:56:33,595 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=234, PETRI_PLACES=114, PETRI_TRANSITIONS=72} [2021-11-19 04:56:33,597 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 31 predicate places. [2021-11-19 04:56:33,597 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 72 transitions, 234 flow [2021-11-19 04:56:33,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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) [2021-11-19 04:56:33,600 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:56:33,600 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] [2021-11-19 04:56:33,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:56:33,601 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:56:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:33,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1840499910, now seen corresponding path program 1 times [2021-11-19 04:56:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:33,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456992092] [2021-11-19 04:56:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:33,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:33,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:56:33,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456992092] [2021-11-19 04:56:33,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456992092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:33,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:33,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:56:33,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506435658] [2021-11-19 04:56:33,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:33,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:56:33,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:56:33,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:56:33,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:56:33,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-19 04:56:33,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 72 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:56:33,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:56:33,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-19 04:56:33,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:56:33,959 INFO L129 PetriNetUnfolder]: 94/321 cut-off events. [2021-11-19 04:56:33,960 INFO L130 PetriNetUnfolder]: For 119/121 co-relation queries the response was YES. [2021-11-19 04:56:33,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 321 events. 94/321 cut-off events. For 119/121 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1524 event pairs, 11 based on Foata normal form. 8/323 useless extension candidates. Maximal degree in co-relation 594. Up to 86 conditions per place. [2021-11-19 04:56:33,963 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 13 selfloop transitions, 5 changer transitions 21/98 dead transitions. [2021-11-19 04:56:33,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 98 transitions, 366 flow [2021-11-19 04:56:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:56:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-19 04:56:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2021-11-19 04:56:33,967 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2021-11-19 04:56:33,967 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2021-11-19 04:56:33,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2021-11-19 04:56:33,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:56:33,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2021-11-19 04:56:33,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 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) [2021-11-19 04:56:33,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-11-19 04:56:33,976 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2021-11-19 04:56:33,976 INFO L186 Difference]: Start difference. First operand has 114 places, 72 transitions, 234 flow. Second operand 9 states and 707 transitions. [2021-11-19 04:56:33,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 98 transitions, 366 flow [2021-11-19 04:56:33,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 312 flow, removed 18 selfloop flow, removed 18 redundant places. [2021-11-19 04:56:33,981 INFO L242 Difference]: Finished difference. Result has 101 places, 74 transitions, 230 flow [2021-11-19 04:56:33,981 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=101, PETRI_TRANSITIONS=74} [2021-11-19 04:56:33,984 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 18 predicate places. [2021-11-19 04:56:33,985 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 74 transitions, 230 flow [2021-11-19 04:56:33,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:56:33,985 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:56:33,985 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:33,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:56:33,986 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:56:33,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1430023985, now seen corresponding path program 1 times [2021-11-19 04:56:33,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:33,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484550534] [2021-11-19 04:56:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:33,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:34,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:56:34,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484550534] [2021-11-19 04:56:34,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484550534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:34,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:34,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:56:34,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216419832] [2021-11-19 04:56:34,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:34,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:56:34,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:56:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:56:34,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:56:34,139 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-19 04:56:34,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 74 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2021-11-19 04:56:34,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:56:34,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-19 04:56:34,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:56:34,298 INFO L129 PetriNetUnfolder]: 43/194 cut-off events. [2021-11-19 04:56:34,298 INFO L130 PetriNetUnfolder]: For 252/273 co-relation queries the response was YES. [2021-11-19 04:56:34,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 194 events. 43/194 cut-off events. For 252/273 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 682 event pairs, 0 based on Foata normal form. 9/201 useless extension candidates. Maximal degree in co-relation 508. Up to 65 conditions per place. [2021-11-19 04:56:34,300 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 9 selfloop transitions, 7 changer transitions 25/100 dead transitions. [2021-11-19 04:56:34,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 493 flow [2021-11-19 04:56:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:56:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-19 04:56:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 783 transitions. [2021-11-19 04:56:34,304 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8604395604395605 [2021-11-19 04:56:34,304 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 783 transitions. [2021-11-19 04:56:34,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 783 transitions. [2021-11-19 04:56:34,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:56:34,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 783 transitions. [2021-11-19 04:56:34,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.3) internal successors, (783), 10 states have internal predecessors, (783), 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) [2021-11-19 04:56:34,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-19 04:56:34,311 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2021-11-19 04:56:34,311 INFO L186 Difference]: Start difference. First operand has 101 places, 74 transitions, 230 flow. Second operand 10 states and 783 transitions. [2021-11-19 04:56:34,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 493 flow [2021-11-19 04:56:34,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 462 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-11-19 04:56:34,316 INFO L242 Difference]: Finished difference. Result has 105 places, 74 transitions, 248 flow [2021-11-19 04:56:34,316 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=248, PETRI_PLACES=105, PETRI_TRANSITIONS=74} [2021-11-19 04:56:34,317 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 22 predicate places. [2021-11-19 04:56:34,317 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 74 transitions, 248 flow [2021-11-19 04:56:34,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2021-11-19 04:56:34,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-19 04:56:34,318 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:34,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:56:34,319 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 04:56:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:56:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash 193546508, now seen corresponding path program 1 times [2021-11-19 04:56:34,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:56:34,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336300017] [2021-11-19 04:56:34,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:56:34,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:56:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:56:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:56:34,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:56:34,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336300017] [2021-11-19 04:56:34,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336300017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:56:34,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:56:34,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 04:56:34,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736054771] [2021-11-19 04:56:34,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:56:34,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:56:34,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:56:34,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:56:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:56:34,459 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-11-19 04:56:34,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 74 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2021-11-19 04:56:34,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-19 04:56:34,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-11-19 04:56:34,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-19 04:56:34,615 INFO L129 PetriNetUnfolder]: 5/87 cut-off events. [2021-11-19 04:56:34,616 INFO L130 PetriNetUnfolder]: For 185/207 co-relation queries the response was YES. [2021-11-19 04:56:34,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 87 events. 5/87 cut-off events. For 185/207 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 205. Up to 14 conditions per place. [2021-11-19 04:56:34,617 INFO L132 encePairwiseOnDemand]: 82/91 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2021-11-19 04:56:34,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 77 transitions, 356 flow [2021-11-19 04:56:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 04:56:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-19 04:56:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 841 transitions. [2021-11-19 04:56:34,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8401598401598401 [2021-11-19 04:56:34,621 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 841 transitions. [2021-11-19 04:56:34,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 841 transitions. [2021-11-19 04:56:34,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-19 04:56:34,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 841 transitions. [2021-11-19 04:56:34,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.45454545454545) internal successors, (841), 11 states have internal predecessors, (841), 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) [2021-11-19 04:56:34,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2021-11-19 04:56:34,630 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 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) [2021-11-19 04:56:34,630 INFO L186 Difference]: Start difference. First operand has 105 places, 74 transitions, 248 flow. Second operand 11 states and 841 transitions. [2021-11-19 04:56:34,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 77 transitions, 356 flow [2021-11-19 04:56:34,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 77 transitions, 291 flow, removed 23 selfloop flow, removed 10 redundant places. [2021-11-19 04:56:34,633 INFO L242 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2021-11-19 04:56:34,633 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2021-11-19 04:56:34,634 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2021-11-19 04:56:34,634 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2021-11-19 04:56:34,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2021-11-19 04:56:34,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-19 04:56:34,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-19 04:56:34,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-19 04:56:34,639 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-19 04:56:34,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 04:56:34,646 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:56:34,648 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-19 04:56:34,649 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:56:34,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:56:34 BasicIcfg [2021-11-19 04:56:34,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:56:34,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:56:34,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:56:34,654 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:56:34,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:29" (3/4) ... [2021-11-19 04:56:34,658 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 04:56:34,667 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-19 04:56:34,668 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-19 04:56:34,668 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-19 04:56:34,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-19 04:56:34,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-19 04:56:34,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 04:56:34,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 04:56:34,727 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 04:56:34,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:56:34,728 INFO L158 Benchmark]: Toolchain (without parser) took 6256.06ms. Allocated memory was 98.6MB in the beginning and 159.4MB in the end (delta: 60.8MB). Free memory was 62.9MB in the beginning and 108.4MB in the end (delta: -45.5MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2021-11-19 04:56:34,729 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory was 52.1MB in the beginning and 52.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:56:34,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.67ms. Allocated memory is still 98.6MB. Free memory was 62.7MB in the beginning and 61.9MB in the end (delta: 821.2kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 04:56:34,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.44ms. Allocated memory is still 98.6MB. Free memory was 61.9MB in the beginning and 60.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:56:34,730 INFO L158 Benchmark]: Boogie Preprocessor took 52.89ms. Allocated memory is still 98.6MB. Free memory was 60.1MB in the beginning and 58.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:56:34,730 INFO L158 Benchmark]: RCFGBuilder took 594.55ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 58.5MB in the beginning and 107.3MB in the end (delta: -48.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-11-19 04:56:34,731 INFO L158 Benchmark]: TraceAbstraction took 4801.18ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 106.8MB in the beginning and 111.5MB in the end (delta: -4.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-11-19 04:56:34,731 INFO L158 Benchmark]: Witness Printer took 72.94ms. Allocated memory is still 159.4MB. Free memory was 111.5MB in the beginning and 108.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 04:56:34,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory was 52.1MB in the beginning and 52.1MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 626.67ms. Allocated memory is still 98.6MB. Free memory was 62.7MB in the beginning and 61.9MB in the end (delta: 821.2kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.44ms. Allocated memory is still 98.6MB. Free memory was 61.9MB in the beginning and 60.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.89ms. Allocated memory is still 98.6MB. Free memory was 60.1MB in the beginning and 58.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 594.55ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 58.5MB in the beginning and 107.3MB in the end (delta: -48.9MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4801.18ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 106.8MB in the beginning and 111.5MB in the end (delta: -4.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 72.94ms. Allocated memory is still 159.4MB. Free memory was 111.5MB in the beginning and 108.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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, 114 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: 4.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 312 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 494 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 445 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 424 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 118 mSDtfsCounter, 424 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=306occurred in iteration=2, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 1935 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! [2021-11-19 04:56:34,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b1cf35-408f-4ceb-a737-1c01fce31703/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE