./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be --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 d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:02:55,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:02:55,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:02:55,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:02:55,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:02:55,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:02:55,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:02:55,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:02:55,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:02:55,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:02:55,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:02:55,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:02:55,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:02:55,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:02:55,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:02:55,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:02:55,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:02:55,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:02:55,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:02:55,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:02:55,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:02:55,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:02:55,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:02:55,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:02:55,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:02:55,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:02:55,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:02:55,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:02:55,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:02:55,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:02:55,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:02:55,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:02:55,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:02:55,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:02:55,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:02:55,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:02:55,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:02:55,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:02:55,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:02:55,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:02:55,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:02:55,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:02:55,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:02:55,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:02:55,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:02:55,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:02:55,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:02:55,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:02:55,679 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:02:55,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:02:55,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:02:55,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:02:55,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:02:55,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:02:55,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:02:55,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:02:55,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:02:55,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:02:55,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:02:55,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:02:55,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:02:55,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:02:55,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:02:55,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:02:55,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:02:55,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:02:55,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:02:55,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:02:55,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:02:55,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:02:55,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:02:55,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:02:55,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:02:55,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:02:55,686 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_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d [2021-10-21 20:02:56,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:02:56,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:02:56,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:02:56,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:02:56,086 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:02:56,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-wmm/safe001_tso.i [2021-10-21 20:02:56,175 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/data/a3c5fc530/a18f9141cf564ea88218a3f097c71f08/FLAG35e2af557 [2021-10-21 20:02:56,928 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:02:56,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/sv-benchmarks/c/pthread-wmm/safe001_tso.i [2021-10-21 20:02:56,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/data/a3c5fc530/a18f9141cf564ea88218a3f097c71f08/FLAG35e2af557 [2021-10-21 20:02:57,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/data/a3c5fc530/a18f9141cf564ea88218a3f097c71f08 [2021-10-21 20:02:57,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:02:57,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:02:57,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:57,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:02:57,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:02:57,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:57" (1/1) ... [2021-10-21 20:02:57,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53624f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:57, skipping insertion in model container [2021-10-21 20:02:57,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:57" (1/1) ... [2021-10-21 20:02:57,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:02:57,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:02:57,485 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_f525c89e-1fa4-42d3-8f77-018999cba8fd/sv-benchmarks/c/pthread-wmm/safe001_tso.i[945,958] [2021-10-21 20:02:57,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:57,842 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:02:57,863 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_f525c89e-1fa4-42d3-8f77-018999cba8fd/sv-benchmarks/c/pthread-wmm/safe001_tso.i[945,958] [2021-10-21 20:02:57,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:58,012 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:02:58,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58 WrapperNode [2021-10-21 20:02:58,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:58,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:58,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:02:58,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:02:58,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:58,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:02:58,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:02:58,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:02:58,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:02:58,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:02:58,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:02:58,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:02:58,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (1/1) ... [2021-10-21 20:02:58,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:02:58,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:58,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:58,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:02:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:02:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 20:02:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:02:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:02:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-21 20:02:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-21 20:02:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-21 20:02:58,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-21 20:02:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-21 20:02:58,309 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-21 20:02:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:02:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 20:02:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:02:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:02:58,312 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 20:02:58,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:02:58,821 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 20:02:58,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:58 BoogieIcfgContainer [2021-10-21 20:02:58,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:02:58,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:02:58,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:02:58,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:02:58,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:02:57" (1/3) ... [2021-10-21 20:02:58,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c596ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:02:58, skipping insertion in model container [2021-10-21 20:02:58,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:58" (2/3) ... [2021-10-21 20:02:58,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c596ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:02:58, skipping insertion in model container [2021-10-21 20:02:58,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:58" (3/3) ... [2021-10-21 20:02:58,838 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2021-10-21 20:02:58,845 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 20:02:58,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:02:58,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:02:58,852 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 20:02:58,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,918 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,918 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,918 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,920 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,920 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,923 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,927 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,927 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,930 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,931 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,932 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,932 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,935 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,935 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,943 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,944 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,944 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,945 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,946 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,947 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,947 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,947 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,949 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,950 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,960 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,961 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,984 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,985 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,993 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,996 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,996 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:58,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:02:59,003 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-21 20:02:59,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:02:59,108 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 [2021-10-21 20:02:59,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 20:02:59,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-10-21 20:02:59,250 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-10-21 20:02:59,253 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:02:59,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-10-21 20:02:59,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-10-21 20:02:59,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-10-21 20:02:59,337 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-10-21 20:02:59,337 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:02:59,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:02:59,339 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] [2021-10-21 20:02:59,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:02:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:59,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1496974853, now seen corresponding path program 1 times [2021-10-21 20:02:59,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:59,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543189156] [2021-10-21 20:02:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:59,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:00,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:00,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543189156] [2021-10-21 20:03:00,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543189156] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:00,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:00,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:03:00,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057276227] [2021-10-21 20:03:00,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:03:00,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:00,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:03:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:03:00,208 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 83 [2021-10-21 20:03:00,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:00,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:03:00,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 83 [2021-10-21 20:03:00,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:03:00,475 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2021-10-21 20:03:00,480 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-21 20:03:00,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 82 events. 3/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 4/85 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2021-10-21 20:03:00,485 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 6 selfloop transitions, 2 changer transitions 11/77 dead transitions. [2021-10-21 20:03:00,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 199 flow [2021-10-21 20:03:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:03:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 20:03:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 661 transitions. [2021-10-21 20:03:00,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8848728246318608 [2021-10-21 20:03:00,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 661 transitions. [2021-10-21 20:03:00,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 661 transitions. [2021-10-21 20:03:00,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:00,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 661 transitions. [2021-10-21 20:03:00,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.44444444444444) internal successors, (661), 9 states have internal predecessors, (661), 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) [2021-10-21 20:03:00,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2021-10-21 20:03:00,567 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2021-10-21 20:03:00,570 INFO L186 Difference]: Start difference. First operand has 77 places, 68 transitions, 145 flow. Second operand 9 states and 661 transitions. [2021-10-21 20:03:00,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 199 flow [2021-10-21 20:03:00,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-21 20:03:00,587 INFO L242 Difference]: Finished difference. Result has 89 places, 66 transitions, 158 flow [2021-10-21 20:03:00,590 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=158, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2021-10-21 20:03:00,591 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2021-10-21 20:03:00,592 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 158 flow [2021-10-21 20:03:00,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:00,593 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:03:00,594 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:00,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:03:00,595 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:03:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1052122532, now seen corresponding path program 1 times [2021-10-21 20:03:00,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:00,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065529776] [2021-10-21 20:03:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:00,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:00,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:00,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065529776] [2021-10-21 20:03:00,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065529776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:00,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:00,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:03:00,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979369809] [2021-10-21 20:03:00,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:03:00,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:00,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:03:00,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:03:00,988 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-10-21 20:03:00,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 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) [2021-10-21 20:03:00,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:03:00,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-10-21 20:03:00,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:03:01,390 INFO L129 PetriNetUnfolder]: 51/206 cut-off events. [2021-10-21 20:03:01,391 INFO L130 PetriNetUnfolder]: For 53/101 co-relation queries the response was YES. [2021-10-21 20:03:01,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 206 events. 51/206 cut-off events. For 53/101 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 772 event pairs, 11 based on Foata normal form. 6/204 useless extension candidates. Maximal degree in co-relation 370. Up to 43 conditions per place. [2021-10-21 20:03:01,401 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 13 selfloop transitions, 5 changer transitions 27/99 dead transitions. [2021-10-21 20:03:01,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 337 flow [2021-10-21 20:03:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:03:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 20:03:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 717 transitions. [2021-10-21 20:03:01,409 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.863855421686747 [2021-10-21 20:03:01,409 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 717 transitions. [2021-10-21 20:03:01,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 717 transitions. [2021-10-21 20:03:01,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:01,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 717 transitions. [2021-10-21 20:03:01,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.7) internal successors, (717), 10 states have internal predecessors, (717), 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) [2021-10-21 20:03:01,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2021-10-21 20:03:01,421 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2021-10-21 20:03:01,422 INFO L186 Difference]: Start difference. First operand has 89 places, 66 transitions, 158 flow. Second operand 10 states and 717 transitions. [2021-10-21 20:03:01,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 337 flow [2021-10-21 20:03:01,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 99 transitions, 303 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-10-21 20:03:01,437 INFO L242 Difference]: Finished difference. Result has 91 places, 68 transitions, 196 flow [2021-10-21 20:03:01,438 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2021-10-21 20:03:01,438 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2021-10-21 20:03:01,439 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 196 flow [2021-10-21 20:03:01,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 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) [2021-10-21 20:03:01,442 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:03:01,443 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] [2021-10-21 20:03:01,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:03:01,443 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:03:01,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:01,444 INFO L82 PathProgramCache]: Analyzing trace with hash -12126335, now seen corresponding path program 1 times [2021-10-21 20:03:01,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:01,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262902022] [2021-10-21 20:03:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:01,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:01,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:01,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262902022] [2021-10-21 20:03:01,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262902022] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:01,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:01,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:03:01,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336367619] [2021-10-21 20:03:01,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:03:01,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:01,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:03:01,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:03:01,670 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-10-21 20:03:01,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:01,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:03:01,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-10-21 20:03:01,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:03:02,102 INFO L129 PetriNetUnfolder]: 92/405 cut-off events. [2021-10-21 20:03:02,102 INFO L130 PetriNetUnfolder]: For 479/631 co-relation queries the response was YES. [2021-10-21 20:03:02,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 405 events. 92/405 cut-off events. For 479/631 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2332 event pairs, 5 based on Foata normal form. 12/412 useless extension candidates. Maximal degree in co-relation 934. Up to 61 conditions per place. [2021-10-21 20:03:02,109 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 24 selfloop transitions, 10 changer transitions 32/116 dead transitions. [2021-10-21 20:03:02,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 116 transitions, 576 flow [2021-10-21 20:03:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:03:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 20:03:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 886 transitions. [2021-10-21 20:03:02,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8211306765523633 [2021-10-21 20:03:02,115 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 886 transitions. [2021-10-21 20:03:02,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 886 transitions. [2021-10-21 20:03:02,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:02,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 886 transitions. [2021-10-21 20:03:02,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.15384615384616) internal successors, (886), 13 states have internal predecessors, (886), 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) [2021-10-21 20:03:02,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2021-10-21 20:03:02,126 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2021-10-21 20:03:02,126 INFO L186 Difference]: Start difference. First operand has 91 places, 68 transitions, 196 flow. Second operand 13 states and 886 transitions. [2021-10-21 20:03:02,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 116 transitions, 576 flow [2021-10-21 20:03:02,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 116 transitions, 521 flow, removed 22 selfloop flow, removed 5 redundant places. [2021-10-21 20:03:02,137 INFO L242 Difference]: Finished difference. Result has 104 places, 74 transitions, 287 flow [2021-10-21 20:03:02,137 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=287, PETRI_PLACES=104, PETRI_TRANSITIONS=74} [2021-10-21 20:03:02,137 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 27 predicate places. [2021-10-21 20:03:02,138 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 74 transitions, 287 flow [2021-10-21 20:03:02,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:02,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:03:02,139 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] [2021-10-21 20:03:02,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:03:02,140 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:03:02,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:02,140 INFO L82 PathProgramCache]: Analyzing trace with hash -140892255, now seen corresponding path program 1 times [2021-10-21 20:03:02,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:02,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220119274] [2021-10-21 20:03:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:02,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:02,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:02,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220119274] [2021-10-21 20:03:02,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220119274] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:02,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:02,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:03:02,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631907230] [2021-10-21 20:03:02,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:03:02,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:02,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:03:02,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:03:02,331 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-10-21 20:03:02,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 74 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-10-21 20:03:02,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:03:02,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-10-21 20:03:02,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:03:02,519 INFO L129 PetriNetUnfolder]: 54/266 cut-off events. [2021-10-21 20:03:02,520 INFO L130 PetriNetUnfolder]: For 931/987 co-relation queries the response was YES. [2021-10-21 20:03:02,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 266 events. 54/266 cut-off events. For 931/987 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1186 event pairs, 19 based on Foata normal form. 7/270 useless extension candidates. Maximal degree in co-relation 840. Up to 63 conditions per place. [2021-10-21 20:03:02,544 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 9 selfloop transitions, 4 changer transitions 22/98 dead transitions. [2021-10-21 20:03:02,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 537 flow [2021-10-21 20:03:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:03:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 20:03:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2021-10-21 20:03:02,549 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8862115127175368 [2021-10-21 20:03:02,549 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 662 transitions. [2021-10-21 20:03:02,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 662 transitions. [2021-10-21 20:03:02,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:02,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 662 transitions. [2021-10-21 20:03:02,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 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) [2021-10-21 20:03:02,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2021-10-21 20:03:02,557 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2021-10-21 20:03:02,558 INFO L186 Difference]: Start difference. First operand has 104 places, 74 transitions, 287 flow. Second operand 9 states and 662 transitions. [2021-10-21 20:03:02,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 537 flow [2021-10-21 20:03:02,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 509 flow, removed 14 selfloop flow, removed 3 redundant places. [2021-10-21 20:03:02,571 INFO L242 Difference]: Finished difference. Result has 107 places, 76 transitions, 321 flow [2021-10-21 20:03:02,572 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=321, PETRI_PLACES=107, PETRI_TRANSITIONS=76} [2021-10-21 20:03:02,572 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 30 predicate places. [2021-10-21 20:03:02,572 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 76 transitions, 321 flow [2021-10-21 20:03:02,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-10-21 20:03:02,573 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:03:02,574 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:02,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:03:02,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:03:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1098235450, now seen corresponding path program 1 times [2021-10-21 20:03:02,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:02,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658990425] [2021-10-21 20:03:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:02,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:02,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:02,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658990425] [2021-10-21 20:03:02,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658990425] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:02,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:02,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:03:02,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69087550] [2021-10-21 20:03:02,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:03:02,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:02,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:03:02,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:03:02,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-10-21 20:03:02,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 76 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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) [2021-10-21 20:03:02,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:03:02,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-10-21 20:03:02,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:03:02,904 INFO L129 PetriNetUnfolder]: 30/231 cut-off events. [2021-10-21 20:03:02,904 INFO L130 PetriNetUnfolder]: For 996/1131 co-relation queries the response was YES. [2021-10-21 20:03:02,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 231 events. 30/231 cut-off events. For 996/1131 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1064 event pairs, 12 based on Foata normal form. 11/240 useless extension candidates. Maximal degree in co-relation 723. Up to 40 conditions per place. [2021-10-21 20:03:02,908 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 9 selfloop transitions, 4 changer transitions 21/89 dead transitions. [2021-10-21 20:03:02,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 89 transitions, 519 flow [2021-10-21 20:03:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:03:02,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 20:03:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 494 transitions. [2021-10-21 20:03:02,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8502581755593803 [2021-10-21 20:03:02,912 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 494 transitions. [2021-10-21 20:03:02,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 494 transitions. [2021-10-21 20:03:02,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:02,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 494 transitions. [2021-10-21 20:03:02,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 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) [2021-10-21 20:03:02,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-10-21 20:03:02,918 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-10-21 20:03:02,918 INFO L186 Difference]: Start difference. First operand has 107 places, 76 transitions, 321 flow. Second operand 7 states and 494 transitions. [2021-10-21 20:03:02,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 89 transitions, 519 flow [2021-10-21 20:03:02,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 89 transitions, 475 flow, removed 20 selfloop flow, removed 7 redundant places. [2021-10-21 20:03:02,932 INFO L242 Difference]: Finished difference. Result has 104 places, 67 transitions, 240 flow [2021-10-21 20:03:02,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=104, PETRI_TRANSITIONS=67} [2021-10-21 20:03:02,933 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 27 predicate places. [2021-10-21 20:03:02,933 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 67 transitions, 240 flow [2021-10-21 20:03:02,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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) [2021-10-21 20:03:02,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:03:02,934 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] [2021-10-21 20:03:02,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:03:02,935 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:03:02,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:02,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1610045188, now seen corresponding path program 1 times [2021-10-21 20:03:02,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:02,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358888270] [2021-10-21 20:03:02,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:02,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:03,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:03,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358888270] [2021-10-21 20:03:03,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358888270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:03,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:03,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:03:03,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126118119] [2021-10-21 20:03:03,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:03:03,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:03,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:03:03,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:03:03,082 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-10-21 20:03:03,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 67 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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) [2021-10-21 20:03:03,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:03:03,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-10-21 20:03:03,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:03:03,223 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2021-10-21 20:03:03,223 INFO L130 PetriNetUnfolder]: For 335/355 co-relation queries the response was YES. [2021-10-21 20:03:03,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 119 events. 7/119 cut-off events. For 335/355 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 297 event pairs, 6 based on Foata normal form. 7/125 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2021-10-21 20:03:03,226 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 10 selfloop transitions, 2 changer transitions 8/74 dead transitions. [2021-10-21 20:03:03,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 74 transitions, 331 flow [2021-10-21 20:03:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:03:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-21 20:03:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 556 transitions. [2021-10-21 20:03:03,230 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8373493975903614 [2021-10-21 20:03:03,230 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 556 transitions. [2021-10-21 20:03:03,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 556 transitions. [2021-10-21 20:03:03,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:03,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 556 transitions. [2021-10-21 20:03:03,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.5) internal successors, (556), 8 states have internal predecessors, (556), 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) [2021-10-21 20:03:03,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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) [2021-10-21 20:03:03,238 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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) [2021-10-21 20:03:03,239 INFO L186 Difference]: Start difference. First operand has 104 places, 67 transitions, 240 flow. Second operand 8 states and 556 transitions. [2021-10-21 20:03:03,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 74 transitions, 331 flow [2021-10-21 20:03:03,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 74 transitions, 272 flow, removed 20 selfloop flow, removed 14 redundant places. [2021-10-21 20:03:03,246 INFO L242 Difference]: Finished difference. Result has 99 places, 66 transitions, 205 flow [2021-10-21 20:03:03,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=205, PETRI_PLACES=99, PETRI_TRANSITIONS=66} [2021-10-21 20:03:03,247 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2021-10-21 20:03:03,247 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 66 transitions, 205 flow [2021-10-21 20:03:03,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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) [2021-10-21 20:03:03,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:03:03,248 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] [2021-10-21 20:03:03,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:03:03,249 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:03:03,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:03,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2107816948, now seen corresponding path program 2 times [2021-10-21 20:03:03,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:03,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304142046] [2021-10-21 20:03:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:03,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:03,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:03,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304142046] [2021-10-21 20:03:03,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304142046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:03,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:03,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:03:03,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071057562] [2021-10-21 20:03:03,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:03:03,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:03,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:03:03,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:03:03,387 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-21 20:03:03,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 66 transitions, 205 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) [2021-10-21 20:03:03,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:03:03,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-21 20:03:03,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:03:03,602 INFO L129 PetriNetUnfolder]: 102/329 cut-off events. [2021-10-21 20:03:03,602 INFO L130 PetriNetUnfolder]: For 190/191 co-relation queries the response was YES. [2021-10-21 20:03:03,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 329 events. 102/329 cut-off events. For 190/191 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1605 event pairs, 21 based on Foata normal form. 8/329 useless extension candidates. Maximal degree in co-relation 628. Up to 86 conditions per place. [2021-10-21 20:03:03,607 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 9 selfloop transitions, 5 changer transitions 21/91 dead transitions. [2021-10-21 20:03:03,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 91 transitions, 325 flow [2021-10-21 20:03:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:03:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 20:03:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 658 transitions. [2021-10-21 20:03:03,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8808567603748326 [2021-10-21 20:03:03,612 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 658 transitions. [2021-10-21 20:03:03,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 658 transitions. [2021-10-21 20:03:03,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:03,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 658 transitions. [2021-10-21 20:03:03,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.11111111111111) internal successors, (658), 9 states have internal predecessors, (658), 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) [2021-10-21 20:03:03,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2021-10-21 20:03:03,620 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2021-10-21 20:03:03,621 INFO L186 Difference]: Start difference. First operand has 99 places, 66 transitions, 205 flow. Second operand 9 states and 658 transitions. [2021-10-21 20:03:03,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 91 transitions, 325 flow [2021-10-21 20:03:03,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 291 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-10-21 20:03:03,627 INFO L242 Difference]: Finished difference. Result has 98 places, 68 transitions, 221 flow [2021-10-21 20:03:03,627 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=221, PETRI_PLACES=98, PETRI_TRANSITIONS=68} [2021-10-21 20:03:03,628 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2021-10-21 20:03:03,628 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 68 transitions, 221 flow [2021-10-21 20:03:03,629 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) [2021-10-21 20:03:03,629 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:03:03,629 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:03,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:03:03,630 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:03:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:03,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1413919193, now seen corresponding path program 1 times [2021-10-21 20:03:03,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:03,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759499244] [2021-10-21 20:03:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:03,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:03,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:03,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759499244] [2021-10-21 20:03:03,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759499244] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:03,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:03,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:03:03,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372180112] [2021-10-21 20:03:03,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:03:03,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:03:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:03:03,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-21 20:03:03,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 68 transitions, 221 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2021-10-21 20:03:03,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:03:03,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-21 20:03:03,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:03:03,962 INFO L129 PetriNetUnfolder]: 45/184 cut-off events. [2021-10-21 20:03:03,962 INFO L130 PetriNetUnfolder]: For 264/297 co-relation queries the response was YES. [2021-10-21 20:03:03,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 184 events. 45/184 cut-off events. For 264/297 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 644 event pairs, 3 based on Foata normal form. 10/192 useless extension candidates. Maximal degree in co-relation 535. Up to 64 conditions per place. [2021-10-21 20:03:03,964 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 5 selfloop transitions, 7 changer transitions 25/93 dead transitions. [2021-10-21 20:03:03,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 472 flow [2021-10-21 20:03:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:03:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 20:03:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 729 transitions. [2021-10-21 20:03:03,969 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8783132530120482 [2021-10-21 20:03:03,969 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 729 transitions. [2021-10-21 20:03:03,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 729 transitions. [2021-10-21 20:03:03,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:03,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 729 transitions. [2021-10-21 20:03:03,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.9) internal successors, (729), 10 states have internal predecessors, (729), 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) [2021-10-21 20:03:03,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2021-10-21 20:03:03,978 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2021-10-21 20:03:03,978 INFO L186 Difference]: Start difference. First operand has 98 places, 68 transitions, 221 flow. Second operand 10 states and 729 transitions. [2021-10-21 20:03:03,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 472 flow [2021-10-21 20:03:03,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 449 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-10-21 20:03:03,984 INFO L242 Difference]: Finished difference. Result has 104 places, 68 transitions, 247 flow [2021-10-21 20:03:03,984 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=247, PETRI_PLACES=104, PETRI_TRANSITIONS=68} [2021-10-21 20:03:03,985 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 27 predicate places. [2021-10-21 20:03:03,985 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 68 transitions, 247 flow [2021-10-21 20:03:03,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2021-10-21 20:03:03,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:03:03,986 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:03,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:03:03,987 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:03:03,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:03,987 INFO L82 PathProgramCache]: Analyzing trace with hash 159521666, now seen corresponding path program 1 times [2021-10-21 20:03:03,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:03,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049151616] [2021-10-21 20:03:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:03,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:04,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:04,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049151616] [2021-10-21 20:03:04,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049151616] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:04,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:04,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:03:04,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653475669] [2021-10-21 20:03:04,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:03:04,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:03:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:03:04,135 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-10-21 20:03:04,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 68 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:04,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:03:04,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-10-21 20:03:04,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:03:04,306 INFO L129 PetriNetUnfolder]: 4/77 cut-off events. [2021-10-21 20:03:04,307 INFO L130 PetriNetUnfolder]: For 167/185 co-relation queries the response was YES. [2021-10-21 20:03:04,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 77 events. 4/77 cut-off events. For 167/185 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 96 event pairs, 0 based on Foata normal form. 6/83 useless extension candidates. Maximal degree in co-relation 191. Up to 13 conditions per place. [2021-10-21 20:03:04,308 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2021-10-21 20:03:04,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 71 transitions, 337 flow [2021-10-21 20:03:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:03:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-21 20:03:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 782 transitions. [2021-10-21 20:03:04,312 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8565169769989047 [2021-10-21 20:03:04,313 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 782 transitions. [2021-10-21 20:03:04,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 782 transitions. [2021-10-21 20:03:04,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:04,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 782 transitions. [2021-10-21 20:03:04,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 71.0909090909091) internal successors, (782), 11 states have internal predecessors, (782), 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) [2021-10-21 20:03:04,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 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) [2021-10-21 20:03:04,321 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 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) [2021-10-21 20:03:04,321 INFO L186 Difference]: Start difference. First operand has 104 places, 68 transitions, 247 flow. Second operand 11 states and 782 transitions. [2021-10-21 20:03:04,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 71 transitions, 337 flow [2021-10-21 20:03:04,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 71 transitions, 264 flow, removed 26 selfloop flow, removed 14 redundant places. [2021-10-21 20:03:04,325 INFO L242 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-10-21 20:03:04,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-10-21 20:03:04,326 INFO L334 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2021-10-21 20:03:04,326 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-10-21 20:03:04,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:04,330 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:03:04,331 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 20:03:04,331 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 20:03:04,332 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 20:03:04,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:03:04,342 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 20:03:04,342 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:03:04,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:03:04 BasicIcfg [2021-10-21 20:03:04,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:03:04,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:03:04,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:03:04,347 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:03:04,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:58" (3/4) ... [2021-10-21 20:03:04,351 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:03:04,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-21 20:03:04,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-21 20:03:04,360 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-21 20:03:04,367 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-21 20:03:04,368 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:03:04,368 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:03:04,369 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:03:04,451 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:03:04,451 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:03:04,454 INFO L168 Benchmark]: Toolchain (without parser) took 7349.06 ms. Allocated memory was 109.1 MB in the beginning and 176.2 MB in the end (delta: 67.1 MB). Free memory was 66.2 MB in the beginning and 72.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 60.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:04,455 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 109.1 MB. Free memory is still 83.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:03:04,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 909.09 ms. Allocated memory is still 109.1 MB. Free memory was 66.1 MB in the beginning and 74.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:04,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.04 ms. Allocated memory is still 109.1 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:04,457 INFO L168 Benchmark]: Boogie Preprocessor took 60.00 ms. Allocated memory is still 109.1 MB. Free memory was 72.0 MB in the beginning and 70.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:03:04,458 INFO L168 Benchmark]: RCFGBuilder took 649.12 ms. Allocated memory is still 109.1 MB. Free memory was 70.8 MB in the beginning and 58.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:04,458 INFO L168 Benchmark]: TraceAbstraction took 5518.50 ms. Allocated memory was 109.1 MB in the beginning and 176.2 MB in the end (delta: 67.1 MB). Free memory was 57.9 MB in the beginning and 75.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:04,459 INFO L168 Benchmark]: Witness Printer took 104.74 ms. Allocated memory is still 176.2 MB. Free memory was 75.6 MB in the beginning and 72.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:04,462 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 109.1 MB. Free memory is still 83.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 909.09 ms. Allocated memory is still 109.1 MB. Free memory was 66.1 MB in the beginning and 74.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.04 ms. Allocated memory is still 109.1 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.00 ms. Allocated memory is still 109.1 MB. Free memory was 72.0 MB in the beginning and 70.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 649.12 ms. Allocated memory is still 109.1 MB. Free memory was 70.8 MB in the beginning and 58.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5518.50 ms. Allocated memory was 109.1 MB in the beginning and 176.2 MB in the end (delta: 67.1 MB). Free memory was 57.9 MB in the beginning and 75.6 MB in the end (delta: -17.6 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. * Witness Printer took 104.74 ms. Allocated memory is still 176.2 MB. Free memory was 75.6 MB in the beginning and 72.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 62.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5248.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2577.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 165.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 99 SDtfs, 220 SDslu, 298 SDs, 0 SdLazy, 352 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 383.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1212.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=321occurred in iteration=4, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.0ms SsaConstructionTime, 319.7ms SatisfiabilityAnalysisTime, 1705.0ms InterpolantComputationTime, 486 NumberOfCodeBlocks, 486 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 477 ConstructedInterpolants, 0 QuantifiedInterpolants, 1535 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2021-10-21 20:03:04,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f525c89e-1fa4-42d3-8f77-018999cba8fd/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...