./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg --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 f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:37:57,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:37:57,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:37:57,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:37:57,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:37:57,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:37:57,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:37:57,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:37:57,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:37:57,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:37:57,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:37:57,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:37:57,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:37:57,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:37:57,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:37:57,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:37:57,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:37:57,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:37:57,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:37:57,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:37:57,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:37:57,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:37:57,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:37:57,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:37:57,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:37:57,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:37:57,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:37:57,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:37:57,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:37:57,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:37:57,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:37:57,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:37:57,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:37:57,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:37:57,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:37:57,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:37:57,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:37:57,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:37:57,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:37:57,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:37:57,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:37:57,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:37:57,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:37:57,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:37:57,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:37:57,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:37:57,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:37:57,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:37:57,196 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:37:57,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:37:57,197 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:37:57,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:37:57,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:37:57,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:37:57,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:37:57,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:37:57,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:37:57,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:37:57,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:37:57,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:37:57,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:37:57,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:37:57,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:37:57,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:37:57,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:37:57,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:37:57,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:37:57,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:37:57,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:37:57,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:37:57,206 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:37:57,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:37:57,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:37:57,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:37:57,207 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_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2021-10-28 09:37:57,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:37:57,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:37:57,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:37:57,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:37:57,483 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:37:57,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i [2021-10-28 09:37:57,570 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/data/f71ecb02f/0808c884ac324c19bc2a281626328c8e/FLAG59e946b45 [2021-10-28 09:37:58,165 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:37:58,166 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2021-10-28 09:37:58,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/data/f71ecb02f/0808c884ac324c19bc2a281626328c8e/FLAG59e946b45 [2021-10-28 09:37:58,442 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/data/f71ecb02f/0808c884ac324c19bc2a281626328c8e [2021-10-28 09:37:58,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:37:58,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:37:58,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:37:58,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:37:58,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:37:58,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:58" (1/1) ... [2021-10-28 09:37:58,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab8f80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:58, skipping insertion in model container [2021-10-28 09:37:58,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:58" (1/1) ... [2021-10-28 09:37:58,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:37:58,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:37:58,771 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2021-10-28 09:37:58,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:37:58,990 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:37:59,012 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2021-10-28 09:37:59,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:37:59,144 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:37:59,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59 WrapperNode [2021-10-28 09:37:59,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:37:59,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:37:59,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:37:59,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:37:59,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:37:59,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:37:59,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:37:59,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:37:59,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:37:59,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:37:59,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:37:59,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:37:59,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (1/1) ... [2021-10-28 09:37:59,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:37:59,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:59,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:37:59,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:37:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:37:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:37:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:37:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:37:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 09:37:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 09:37:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 09:37:59,395 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 09:37:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 09:37:59,395 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 09:37:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:37:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:37:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:37:59,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:37:59,397 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:37:59,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:37:59,754 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:37:59,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:59 BoogieIcfgContainer [2021-10-28 09:37:59,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:37:59,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:37:59,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:37:59,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:37:59,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:37:58" (1/3) ... [2021-10-28 09:37:59,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f442210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:59, skipping insertion in model container [2021-10-28 09:37:59,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:59" (2/3) ... [2021-10-28 09:37:59,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f442210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:59, skipping insertion in model container [2021-10-28 09:37:59,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:59" (3/3) ... [2021-10-28 09:37:59,775 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2021-10-28 09:37:59,781 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:37:59,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:37:59,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:37:59,782 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:37:59,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,852 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,852 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,858 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,858 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,860 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,860 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,867 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,867 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,877 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,881 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,883 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,897 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,897 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,897 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,898 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,900 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,901 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:37:59,904 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 09:37:59,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:37:59,972 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:37:59,972 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 09:37:59,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 81 transitions, 177 flow [2021-10-28 09:38:00,046 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-10-28 09:38:00,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:38:00,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-28 09:38:00,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 81 transitions, 177 flow [2021-10-28 09:38:00,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 66 transitions, 141 flow [2021-10-28 09:38:00,083 INFO L129 PetriNetUnfolder]: 1/65 cut-off events. [2021-10-28 09:38:00,083 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:38:00,083 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:00,084 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] [2021-10-28 09:38:00,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:38:00,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:00,091 INFO L85 PathProgramCache]: Analyzing trace with hash -500719295, now seen corresponding path program 1 times [2021-10-28 09:38:00,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:00,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556865839] [2021-10-28 09:38:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:00,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:00,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:00,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:00,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556865839] [2021-10-28 09:38:00,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556865839] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:00,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:00,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:38:00,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490313854] [2021-10-28 09:38:00,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:38:00,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:00,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:38:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:38:00,678 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 81 [2021-10-28 09:38:00,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:00,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 81 [2021-10-28 09:38:00,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:00,922 INFO L129 PetriNetUnfolder]: 3/80 cut-off events. [2021-10-28 09:38:00,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:38:00,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 80 events. 3/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 4/83 useless extension candidates. Maximal degree in co-relation 81. Up to 7 conditions per place. [2021-10-28 09:38:00,927 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 6 selfloop transitions, 2 changer transitions 11/75 dead transitions. [2021-10-28 09:38:00,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 195 flow [2021-10-28 09:38:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:38:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:38:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 643 transitions. [2021-10-28 09:38:00,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8820301783264746 [2021-10-28 09:38:00,960 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 643 transitions. [2021-10-28 09:38:00,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 643 transitions. [2021-10-28 09:38:00,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:00,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 643 transitions. [2021-10-28 09:38:00,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.44444444444444) internal successors, (643), 9 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:00,997 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,000 INFO L186 Difference]: Start difference. First operand has 75 places, 66 transitions, 141 flow. Second operand 9 states and 643 transitions. [2021-10-28 09:38:01,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 195 flow [2021-10-28 09:38:01,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 192 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:38:01,009 INFO L242 Difference]: Finished difference. Result has 87 places, 64 transitions, 154 flow [2021-10-28 09:38:01,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=154, PETRI_PLACES=87, PETRI_TRANSITIONS=64} [2021-10-28 09:38:01,013 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2021-10-28 09:38:01,013 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 64 transitions, 154 flow [2021-10-28 09:38:01,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:01,014 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] [2021-10-28 09:38:01,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:38:01,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:38:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2012879902, now seen corresponding path program 1 times [2021-10-28 09:38:01,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:01,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309352095] [2021-10-28 09:38:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:01,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:01,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:01,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309352095] [2021-10-28 09:38:01,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309352095] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:01,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:01,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:38:01,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424407743] [2021-10-28 09:38:01,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:01,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:01,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:01,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:01,293 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2021-10-28 09:38:01,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 64 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:01,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2021-10-28 09:38:01,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:01,740 INFO L129 PetriNetUnfolder]: 199/602 cut-off events. [2021-10-28 09:38:01,740 INFO L130 PetriNetUnfolder]: For 191/267 co-relation queries the response was YES. [2021-10-28 09:38:01,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 602 events. 199/602 cut-off events. For 191/267 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3553 event pairs, 23 based on Foata normal form. 17/602 useless extension candidates. Maximal degree in co-relation 1131. Up to 103 conditions per place. [2021-10-28 09:38:01,752 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 18 selfloop transitions, 9 changer transitions 44/121 dead transitions. [2021-10-28 09:38:01,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 456 flow [2021-10-28 09:38:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:38:01,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:38:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 893 transitions. [2021-10-28 09:38:01,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8480531813865148 [2021-10-28 09:38:01,757 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 893 transitions. [2021-10-28 09:38:01,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 893 transitions. [2021-10-28 09:38:01,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:01,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 893 transitions. [2021-10-28 09:38:01,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.6923076923077) internal successors, (893), 13 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,766 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,766 INFO L186 Difference]: Start difference. First operand has 87 places, 64 transitions, 154 flow. Second operand 13 states and 893 transitions. [2021-10-28 09:38:01,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 456 flow [2021-10-28 09:38:01,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 400 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-10-28 09:38:01,778 INFO L242 Difference]: Finished difference. Result has 96 places, 71 transitions, 233 flow [2021-10-28 09:38:01,779 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=233, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2021-10-28 09:38:01,779 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 21 predicate places. [2021-10-28 09:38:01,780 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 233 flow [2021-10-28 09:38:01,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:01,780 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:01,780 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] [2021-10-28 09:38:01,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:38:01,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:38:01,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:01,784 INFO L85 PathProgramCache]: Analyzing trace with hash 761073025, now seen corresponding path program 1 times [2021-10-28 09:38:01,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:01,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525154180] [2021-10-28 09:38:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:01,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:02,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:02,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525154180] [2021-10-28 09:38:02,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525154180] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:02,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:02,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:38:02,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298937924] [2021-10-28 09:38:02,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:02,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:02,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:02,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:02,024 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2021-10-28 09:38:02,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:02,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2021-10-28 09:38:02,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:02,325 INFO L129 PetriNetUnfolder]: 117/472 cut-off events. [2021-10-28 09:38:02,325 INFO L130 PetriNetUnfolder]: For 763/1136 co-relation queries the response was YES. [2021-10-28 09:38:02,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 472 events. 117/472 cut-off events. For 763/1136 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2791 event pairs, 1 based on Foata normal form. 18/480 useless extension candidates. Maximal degree in co-relation 1240. Up to 81 conditions per place. [2021-10-28 09:38:02,332 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 22 selfloop transitions, 12 changer transitions 40/124 dead transitions. [2021-10-28 09:38:02,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 124 transitions, 740 flow [2021-10-28 09:38:02,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:38:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 09:38:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 884 transitions. [2021-10-28 09:38:02,337 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2021-10-28 09:38:02,338 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 884 transitions. [2021-10-28 09:38:02,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 884 transitions. [2021-10-28 09:38:02,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:02,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 884 transitions. [2021-10-28 09:38:02,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.0) internal successors, (884), 13 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,348 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,348 INFO L186 Difference]: Start difference. First operand has 96 places, 71 transitions, 233 flow. Second operand 13 states and 884 transitions. [2021-10-28 09:38:02,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 124 transitions, 740 flow [2021-10-28 09:38:02,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 716 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-10-28 09:38:02,359 INFO L242 Difference]: Finished difference. Result has 108 places, 78 transitions, 373 flow [2021-10-28 09:38:02,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=373, PETRI_PLACES=108, PETRI_TRANSITIONS=78} [2021-10-28 09:38:02,360 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 33 predicate places. [2021-10-28 09:38:02,360 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 78 transitions, 373 flow [2021-10-28 09:38:02,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,361 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:02,361 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:02,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:38:02,362 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:38:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash -866932843, now seen corresponding path program 1 times [2021-10-28 09:38:02,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:02,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57210445] [2021-10-28 09:38:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:02,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:02,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:02,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57210445] [2021-10-28 09:38:02,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57210445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:02,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:02,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:38:02,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177181010] [2021-10-28 09:38:02,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:02,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:02,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 81 [2021-10-28 09:38:02,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 78 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:02,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 81 [2021-10-28 09:38:02,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:02,751 INFO L129 PetriNetUnfolder]: 31/278 cut-off events. [2021-10-28 09:38:02,752 INFO L130 PetriNetUnfolder]: For 1193/1526 co-relation queries the response was YES. [2021-10-28 09:38:02,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 278 events. 31/278 cut-off events. For 1193/1526 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1472 event pairs, 2 based on Foata normal form. 28/299 useless extension candidates. Maximal degree in co-relation 821. Up to 40 conditions per place. [2021-10-28 09:38:02,756 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 15 selfloop transitions, 5 changer transitions 17/97 dead transitions. [2021-10-28 09:38:02,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 97 transitions, 651 flow [2021-10-28 09:38:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:38:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:38:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 757 transitions. [2021-10-28 09:38:02,761 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8496071829405163 [2021-10-28 09:38:02,761 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 757 transitions. [2021-10-28 09:38:02,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 757 transitions. [2021-10-28 09:38:02,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:02,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 757 transitions. [2021-10-28 09:38:02,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.81818181818181) internal successors, (757), 11 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,772 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,772 INFO L186 Difference]: Start difference. First operand has 108 places, 78 transitions, 373 flow. Second operand 11 states and 757 transitions. [2021-10-28 09:38:02,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 97 transitions, 651 flow [2021-10-28 09:38:02,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 97 transitions, 583 flow, removed 34 selfloop flow, removed 3 redundant places. [2021-10-28 09:38:02,789 INFO L242 Difference]: Finished difference. Result has 114 places, 76 transitions, 346 flow [2021-10-28 09:38:02,789 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=96, 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=11, PETRI_FLOW=346, PETRI_PLACES=114, PETRI_TRANSITIONS=76} [2021-10-28 09:38:02,790 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 39 predicate places. [2021-10-28 09:38:02,790 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 76 transitions, 346 flow [2021-10-28 09:38:02,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:02,791 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:02,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:38:02,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:38:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1612672954, now seen corresponding path program 1 times [2021-10-28 09:38:02,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:02,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725501425] [2021-10-28 09:38:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:02,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:02,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:02,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725501425] [2021-10-28 09:38:02,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725501425] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:02,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:02,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:38:02,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297231793] [2021-10-28 09:38:02,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:02,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:02,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:02,969 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 81 [2021-10-28 09:38:02,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 76 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:02,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:02,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 81 [2021-10-28 09:38:02,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:03,139 INFO L129 PetriNetUnfolder]: 34/262 cut-off events. [2021-10-28 09:38:03,140 INFO L130 PetriNetUnfolder]: For 1554/1856 co-relation queries the response was YES. [2021-10-28 09:38:03,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 262 events. 34/262 cut-off events. For 1554/1856 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1340 event pairs, 8 based on Foata normal form. 16/272 useless extension candidates. Maximal degree in co-relation 876. Up to 48 conditions per place. [2021-10-28 09:38:03,143 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 9 selfloop transitions, 5 changer transitions 19/89 dead transitions. [2021-10-28 09:38:03,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 89 transitions, 577 flow [2021-10-28 09:38:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:38:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 09:38:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 485 transitions. [2021-10-28 09:38:03,148 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.855379188712522 [2021-10-28 09:38:03,148 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 485 transitions. [2021-10-28 09:38:03,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 485 transitions. [2021-10-28 09:38:03,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:03,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 485 transitions. [2021-10-28 09:38:03,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,156 INFO L186 Difference]: Start difference. First operand has 114 places, 76 transitions, 346 flow. Second operand 7 states and 485 transitions. [2021-10-28 09:38:03,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 89 transitions, 577 flow [2021-10-28 09:38:03,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 89 transitions, 480 flow, removed 42 selfloop flow, removed 18 redundant places. [2021-10-28 09:38:03,167 INFO L242 Difference]: Finished difference. Result has 98 places, 70 transitions, 277 flow [2021-10-28 09:38:03,167 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=277, PETRI_PLACES=98, PETRI_TRANSITIONS=70} [2021-10-28 09:38:03,168 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 23 predicate places. [2021-10-28 09:38:03,168 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 70 transitions, 277 flow [2021-10-28 09:38:03,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,169 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:03,169 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] [2021-10-28 09:38:03,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:38:03,170 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:38:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1334635296, now seen corresponding path program 1 times [2021-10-28 09:38:03,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:03,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527490392] [2021-10-28 09:38:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:03,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:03,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:03,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527490392] [2021-10-28 09:38:03,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527490392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:03,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:03,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:38:03,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290655554] [2021-10-28 09:38:03,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:38:03,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:38:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:38:03,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-10-28 09:38:03,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 70 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:03,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-10-28 09:38:03,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:03,614 INFO L129 PetriNetUnfolder]: 258/699 cut-off events. [2021-10-28 09:38:03,616 INFO L130 PetriNetUnfolder]: For 312/330 co-relation queries the response was YES. [2021-10-28 09:38:03,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 699 events. 258/699 cut-off events. For 312/330 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4627 event pairs, 9 based on Foata normal form. 25/669 useless extension candidates. Maximal degree in co-relation 1354. Up to 239 conditions per place. [2021-10-28 09:38:03,622 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 10 selfloop transitions, 6 changer transitions 19/95 dead transitions. [2021-10-28 09:38:03,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 397 flow [2021-10-28 09:38:03,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:38:03,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:38:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 640 transitions. [2021-10-28 09:38:03,626 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.877914951989026 [2021-10-28 09:38:03,626 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 640 transitions. [2021-10-28 09:38:03,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 640 transitions. [2021-10-28 09:38:03,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:03,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 640 transitions. [2021-10-28 09:38:03,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.11111111111111) internal successors, (640), 9 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,635 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,635 INFO L186 Difference]: Start difference. First operand has 98 places, 70 transitions, 277 flow. Second operand 9 states and 640 transitions. [2021-10-28 09:38:03,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 397 flow [2021-10-28 09:38:03,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 364 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-10-28 09:38:03,642 INFO L242 Difference]: Finished difference. Result has 101 places, 73 transitions, 300 flow [2021-10-28 09:38:03,642 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=101, PETRI_TRANSITIONS=73} [2021-10-28 09:38:03,643 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 26 predicate places. [2021-10-28 09:38:03,643 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 73 transitions, 300 flow [2021-10-28 09:38:03,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:03,644 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] [2021-10-28 09:38:03,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:38:03,644 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:38:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:03,645 INFO L85 PathProgramCache]: Analyzing trace with hash -954144770, now seen corresponding path program 1 times [2021-10-28 09:38:03,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:03,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609209844] [2021-10-28 09:38:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:03,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:03,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:03,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609209844] [2021-10-28 09:38:03,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609209844] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:03,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:03,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:38:03,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722339275] [2021-10-28 09:38:03,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:03,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:03,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:03,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:03,772 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-10-28 09:38:03,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 73 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:03,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:03,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-10-28 09:38:03,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:04,007 INFO L129 PetriNetUnfolder]: 130/419 cut-off events. [2021-10-28 09:38:04,008 INFO L130 PetriNetUnfolder]: For 828/927 co-relation queries the response was YES. [2021-10-28 09:38:04,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 419 events. 130/419 cut-off events. For 828/927 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2409 event pairs, 0 based on Foata normal form. 42/442 useless extension candidates. Maximal degree in co-relation 1439. Up to 193 conditions per place. [2021-10-28 09:38:04,012 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 6 selfloop transitions, 9 changer transitions 25/98 dead transitions. [2021-10-28 09:38:04,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 98 transitions, 553 flow [2021-10-28 09:38:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:38:04,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:38:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 710 transitions. [2021-10-28 09:38:04,016 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8765432098765432 [2021-10-28 09:38:04,017 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 710 transitions. [2021-10-28 09:38:04,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 710 transitions. [2021-10-28 09:38:04,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:04,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 710 transitions. [2021-10-28 09:38:04,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:04,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:04,024 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:04,024 INFO L186 Difference]: Start difference. First operand has 101 places, 73 transitions, 300 flow. Second operand 10 states and 710 transitions. [2021-10-28 09:38:04,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 98 transitions, 553 flow [2021-10-28 09:38:04,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 518 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-10-28 09:38:04,032 INFO L242 Difference]: Finished difference. Result has 106 places, 73 transitions, 326 flow [2021-10-28 09:38:04,033 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=326, PETRI_PLACES=106, PETRI_TRANSITIONS=73} [2021-10-28 09:38:04,033 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 31 predicate places. [2021-10-28 09:38:04,034 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 73 transitions, 326 flow [2021-10-28 09:38:04,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:04,034 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:38:04,034 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:04,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:38:04,035 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 09:38:04,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1351931023, now seen corresponding path program 1 times [2021-10-28 09:38:04,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:04,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047296980] [2021-10-28 09:38:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:04,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:04,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:04,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047296980] [2021-10-28 09:38:04,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047296980] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:04,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:04,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:38:04,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445878650] [2021-10-28 09:38:04,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:38:04,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:04,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:38:04,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:38:04,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-10-28 09:38:04,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 73 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:04,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:38:04,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-10-28 09:38:04,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:38:04,331 INFO L129 PetriNetUnfolder]: 25/195 cut-off events. [2021-10-28 09:38:04,331 INFO L130 PetriNetUnfolder]: For 752/869 co-relation queries the response was YES. [2021-10-28 09:38:04,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 195 events. 25/195 cut-off events. For 752/869 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 900 event pairs, 0 based on Foata normal form. 43/234 useless extension candidates. Maximal degree in co-relation 696. Up to 61 conditions per place. [2021-10-28 09:38:04,333 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2021-10-28 09:38:04,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 78 transitions, 458 flow [2021-10-28 09:38:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:38:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:38:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 765 transitions. [2021-10-28 09:38:04,337 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8585858585858586 [2021-10-28 09:38:04,337 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 765 transitions. [2021-10-28 09:38:04,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 765 transitions. [2021-10-28 09:38:04,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:38:04,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 765 transitions. [2021-10-28 09:38:04,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:04,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:04,346 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:04,346 INFO L186 Difference]: Start difference. First operand has 106 places, 73 transitions, 326 flow. Second operand 11 states and 765 transitions. [2021-10-28 09:38:04,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 78 transitions, 458 flow [2021-10-28 09:38:04,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 355 flow, removed 32 selfloop flow, removed 13 redundant places. [2021-10-28 09:38:04,352 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2021-10-28 09:38:04,353 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=83, 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=93, PETRI_TRANSITIONS=0} [2021-10-28 09:38:04,353 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2021-10-28 09:38:04,353 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2021-10-28 09:38:04,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:38:04,356 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:38:04,358 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:38:04,358 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:38:04,359 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:38:04,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:38:04,363 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:04,365 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:38:04,365 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:38:04,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:38:04 BasicIcfg [2021-10-28 09:38:04,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:38:04,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:38:04,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:38:04,370 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:38:04,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:59" (3/4) ... [2021-10-28 09:38:04,375 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:38:04,383 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 09:38:04,383 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 09:38:04,383 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 09:38:04,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 09:38:04,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:38:04,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:38:04,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:38:04,449 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:38:04,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:38:04,451 INFO L168 Benchmark]: Toolchain (without parser) took 6003.56 ms. Allocated memory was 134.2 MB in the beginning and 174.1 MB in the end (delta: 39.8 MB). Free memory was 97.9 MB in the beginning and 60.9 MB in the end (delta: 36.9 MB). Peak memory consumption was 74.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:04,452 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory was 59.9 MB in the beginning and 59.8 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:38:04,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.19 ms. Allocated memory is still 134.2 MB. Free memory was 97.6 MB in the beginning and 100.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:04,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.60 ms. Allocated memory is still 134.2 MB. Free memory was 100.6 MB in the beginning and 98.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:04,454 INFO L168 Benchmark]: Boogie Preprocessor took 58.98 ms. Allocated memory is still 134.2 MB. Free memory was 98.5 MB in the beginning and 97.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:04,455 INFO L168 Benchmark]: RCFGBuilder took 461.39 ms. Allocated memory is still 134.2 MB. Free memory was 97.1 MB in the beginning and 85.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:04,455 INFO L168 Benchmark]: TraceAbstraction took 4609.90 ms. Allocated memory was 134.2 MB in the beginning and 174.1 MB in the end (delta: 39.8 MB). Free memory was 84.5 MB in the beginning and 64.1 MB in the end (delta: 20.4 MB). Peak memory consumption was 62.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:04,456 INFO L168 Benchmark]: Witness Printer took 79.66 ms. Allocated memory is still 174.1 MB. Free memory was 64.1 MB in the beginning and 60.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:38:04,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory was 59.9 MB in the beginning and 59.8 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 697.19 ms. Allocated memory is still 134.2 MB. Free memory was 97.6 MB in the beginning and 100.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.60 ms. Allocated memory is still 134.2 MB. Free memory was 100.6 MB in the beginning and 98.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.98 ms. Allocated memory is still 134.2 MB. Free memory was 98.5 MB in the beginning and 97.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 461.39 ms. Allocated memory is still 134.2 MB. Free memory was 97.1 MB in the beginning and 85.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4609.90 ms. Allocated memory was 134.2 MB in the beginning and 174.1 MB in the end (delta: 39.8 MB). Free memory was 84.5 MB in the beginning and 64.1 MB in the end (delta: 20.4 MB). Peak memory consumption was 62.7 MB. Max. memory is 16.1 GB. * Witness Printer took 79.66 ms. Allocated memory is still 174.1 MB. Free memory was 64.1 MB in the beginning and 60.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 103 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: 4.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 215 SDslu, 320 SDs, 0 SdLazy, 336 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=3, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 1154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:38:04,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffb120e3-f850-4737-8e05-c1d77769acbe/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...