./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ --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 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:43:01,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:43:01,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:43:01,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:43:01,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:43:01,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:43:01,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:43:01,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:43:01,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:43:01,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:43:01,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:43:01,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:43:01,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:43:01,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:43:01,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:43:01,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:43:01,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:43:01,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:43:01,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:43:01,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:43:01,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:43:01,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:43:01,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:43:01,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:43:01,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:43:01,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:43:01,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:43:01,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:43:01,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:43:01,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:43:01,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:43:01,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:43:01,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:43:01,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:43:01,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:43:01,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:43:01,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:43:01,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:43:01,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:43:01,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:43:01,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:43:01,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:43:01,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:43:01,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:43:01,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:43:01,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:43:01,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:43:01,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:43:01,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:43:01,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:43:01,746 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:43:01,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:43:01,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:43:01,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:43:01,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:43:01,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:43:01,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:43:01,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:43:01,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:43:01,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:43:01,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:43:01,750 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:43:01,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:43:01,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:43:01,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:43:01,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:43:01,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:01,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:43:01,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:43:01,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:43:01,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:43:01,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:43:01,754 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:43:01,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:43:01,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:43:01,755 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_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 [2022-10-17 10:43:02,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:43:02,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:43:02,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:43:02,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:43:02,080 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:43:02,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2022-10-17 10:43:02,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/data/7428b0a19/3c6c8ecb14d8461b89c9b180ea030e9b/FLAGc0a87b4f0 [2022-10-17 10:43:02,895 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:43:02,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2022-10-17 10:43:02,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/data/7428b0a19/3c6c8ecb14d8461b89c9b180ea030e9b/FLAGc0a87b4f0 [2022-10-17 10:43:03,082 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/data/7428b0a19/3c6c8ecb14d8461b89c9b180ea030e9b [2022-10-17 10:43:03,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:43:03,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:43:03,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:03,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:43:03,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:43:03,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:03" (1/1) ... [2022-10-17 10:43:03,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3096d855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:03, skipping insertion in model container [2022-10-17 10:43:03,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:03" (1/1) ... [2022-10-17 10:43:03,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:43:03,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:43:03,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i[949,962] [2022-10-17 10:43:03,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:03,843 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:43:03,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i[949,962] [2022-10-17 10:43:03,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:04,039 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:43:04,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04 WrapperNode [2022-10-17 10:43:04,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:04,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:04,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:43:04,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:43:04,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,177 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 730 [2022-10-17 10:43:04,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:04,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:43:04,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:43:04,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:43:04,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,263 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:43:04,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:43:04,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:43:04,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:43:04,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (1/1) ... [2022-10-17 10:43:04,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:04,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:04,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:43:04,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31e2a44-859f-44c5-a491-b4396589f434/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:43:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:43:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:43:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:43:04,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:43:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:43:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:43:04,461 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:43:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:43:04,463 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:43:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:43:04,463 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:43:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:43:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:43:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:43:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:43:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:43:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:43:04,467 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:43:04,708 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:43:04,725 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:43:06,007 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:43:07,327 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:43:07,327 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:43:07,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:07 BoogieIcfgContainer [2022-10-17 10:43:07,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:43:07,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:43:07,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:43:07,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:43:07,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:43:03" (1/3) ... [2022-10-17 10:43:07,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab07139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:07, skipping insertion in model container [2022-10-17 10:43:07,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:04" (2/3) ... [2022-10-17 10:43:07,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab07139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:07, skipping insertion in model container [2022-10-17 10:43:07,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:07" (3/3) ... [2022-10-17 10:43:07,348 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_tso.oepc.i [2022-10-17 10:43:07,360 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:43:07,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:43:07,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-10-17 10:43:07,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:43:07,530 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:43:07,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 157 transitions, 334 flow [2022-10-17 10:43:07,749 INFO L130 PetriNetUnfolder]: 2/153 cut-off events. [2022-10-17 10:43:07,749 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:43:07,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 2/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-10-17 10:43:07,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 157 transitions, 334 flow [2022-10-17 10:43:07,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 153 transitions, 318 flow [2022-10-17 10:43:07,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:43:07,783 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c6da414, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:43:07,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-10-17 10:43:07,814 INFO L130 PetriNetUnfolder]: 0/96 cut-off events. [2022-10-17 10:43:07,814 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:43:07,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:07,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:07,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:43:07,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1971041437, now seen corresponding path program 1 times [2022-10-17 10:43:07,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:07,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810809916] [2022-10-17 10:43:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:07,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:08,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:08,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810809916] [2022-10-17 10:43:08,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810809916] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:08,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:08,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:43:08,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100820077] [2022-10-17 10:43:08,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:08,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:43:08,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:08,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:43:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:43:08,881 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 157 [2022-10-17 10:43:08,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 153 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2022-10-17 10:43:08,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:08,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 157 [2022-10-17 10:43:08,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:09,907 INFO L130 PetriNetUnfolder]: 280/1697 cut-off events. [2022-10-17 10:43:09,908 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-10-17 10:43:09,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 1697 events. 280/1697 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 14218 event pairs, 186 based on Foata normal form. 54/1613 useless extension candidates. Maximal degree in co-relation 2099. Up to 377 conditions per place. [2022-10-17 10:43:09,943 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 22 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2022-10-17 10:43:09,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 157 transitions, 377 flow [2022-10-17 10:43:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:43:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:43:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-10-17 10:43:09,970 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9341825902335457 [2022-10-17 10:43:09,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-10-17 10:43:09,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-10-17 10:43:09,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:09,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-10-17 10:43:09,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2022-10-17 10:43:09,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2022-10-17 10:43:10,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2022-10-17 10:43:10,002 INFO L175 Difference]: Start difference. First operand has 164 places, 153 transitions, 318 flow. Second operand 3 states and 440 transitions. [2022-10-17 10:43:10,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 157 transitions, 377 flow [2022-10-17 10:43:10,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 157 transitions, 372 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:43:10,018 INFO L231 Difference]: Finished difference. Result has 160 places, 149 transitions, 310 flow [2022-10-17 10:43:10,021 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=160, PETRI_TRANSITIONS=149} [2022-10-17 10:43:10,026 INFO L287 CegarLoopForPetriNet]: 164 programPoint places, -4 predicate places. [2022-10-17 10:43:10,027 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 149 transitions, 310 flow [2022-10-17 10:43:10,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2022-10-17 10:43:10,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:10,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:10,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:43:10,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:43:10,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:10,031 INFO L85 PathProgramCache]: Analyzing trace with hash 325979700, now seen corresponding path program 1 times [2022-10-17 10:43:10,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:10,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798635736] [2022-10-17 10:43:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:10,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:10,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798635736] [2022-10-17 10:43:10,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798635736] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:10,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:10,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:43:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707368771] [2022-10-17 10:43:10,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:10,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:43:10,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:43:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:43:10,411 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 157 [2022-10-17 10:43:10,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 149 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2022-10-17 10:43:10,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:10,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 157 [2022-10-17 10:43:10,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:10,989 INFO L130 PetriNetUnfolder]: 221/811 cut-off events. [2022-10-17 10:43:10,989 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-10-17 10:43:10,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 811 events. 221/811 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4606 event pairs, 44 based on Foata normal form. 0/765 useless extension candidates. Maximal degree in co-relation 1150. Up to 268 conditions per place. [2022-10-17 10:43:11,001 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 20 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2022-10-17 10:43:11,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 155 transitions, 368 flow [2022-10-17 10:43:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:43:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:43:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-10-17 10:43:11,005 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.921443736730361 [2022-10-17 10:43:11,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-10-17 10:43:11,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-10-17 10:43:11,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:11,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-10-17 10:43:11,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2022-10-17 10:43:11,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2022-10-17 10:43:11,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2022-10-17 10:43:11,013 INFO L175 Difference]: Start difference. First operand has 160 places, 149 transitions, 310 flow. Second operand 3 states and 434 transitions. [2022-10-17 10:43:11,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 155 transitions, 368 flow [2022-10-17 10:43:11,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 155 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:43:11,024 INFO L231 Difference]: Finished difference. Result has 159 places, 148 transitions, 308 flow [2022-10-17 10:43:11,025 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=159, PETRI_TRANSITIONS=148} [2022-10-17 10:43:11,026 INFO L287 CegarLoopForPetriNet]: 164 programPoint places, -5 predicate places. [2022-10-17 10:43:11,027 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 148 transitions, 308 flow [2022-10-17 10:43:11,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2022-10-17 10:43:11,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:11,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:11,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:43:11,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:43:11,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:11,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2140422950, now seen corresponding path program 1 times [2022-10-17 10:43:11,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:11,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820226266] [2022-10-17 10:43:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:11,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:11,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:11,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820226266] [2022-10-17 10:43:11,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820226266] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:11,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:11,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:43:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894621567] [2022-10-17 10:43:11,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:11,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:43:11,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:43:11,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:43:11,751 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 157 [2022-10-17 10:43:11,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 148 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-10-17 10:43:11,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:11,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 157 [2022-10-17 10:43:11,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:13,268 INFO L130 PetriNetUnfolder]: 745/2151 cut-off events. [2022-10-17 10:43:13,268 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-10-17 10:43:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 2151 events. 745/2151 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16342 event pairs, 137 based on Foata normal form. 0/2095 useless extension candidates. Maximal degree in co-relation 3338. Up to 449 conditions per place. [2022-10-17 10:43:13,289 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 24 selfloop transitions, 2 changer transitions 62/202 dead transitions. [2022-10-17 10:43:13,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 202 transitions, 572 flow [2022-10-17 10:43:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:43:13,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:43:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1256 transitions. [2022-10-17 10:43:13,297 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-10-17 10:43:13,297 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1256 transitions. [2022-10-17 10:43:13,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1256 transitions. [2022-10-17 10:43:13,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:13,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1256 transitions. [2022-10-17 10:43:13,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.55555555555554) internal successors, (1256), 9 states have internal predecessors, (1256), 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) [2022-10-17 10:43:13,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 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) [2022-10-17 10:43:13,311 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 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) [2022-10-17 10:43:13,312 INFO L175 Difference]: Start difference. First operand has 159 places, 148 transitions, 308 flow. Second operand 9 states and 1256 transitions. [2022-10-17 10:43:13,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 202 transitions, 572 flow [2022-10-17 10:43:13,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 202 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:43:13,322 INFO L231 Difference]: Finished difference. Result has 172 places, 134 transitions, 296 flow [2022-10-17 10:43:13,323 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=296, PETRI_PLACES=172, PETRI_TRANSITIONS=134} [2022-10-17 10:43:13,326 INFO L287 CegarLoopForPetriNet]: 164 programPoint places, 8 predicate places. [2022-10-17 10:43:13,327 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 134 transitions, 296 flow [2022-10-17 10:43:13,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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) [2022-10-17 10:43:13,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:13,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:13,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:43:13,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:43:13,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1374810071, now seen corresponding path program 1 times [2022-10-17 10:43:13,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:13,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858473643] [2022-10-17 10:43:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:13,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:13,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:13,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858473643] [2022-10-17 10:43:13,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858473643] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:13,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:13,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:43:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393683538] [2022-10-17 10:43:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:13,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:43:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:43:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:43:13,890 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 157 [2022-10-17 10:43:13,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 134 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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) [2022-10-17 10:43:13,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:13,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 157 [2022-10-17 10:43:13,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:14,838 INFO L130 PetriNetUnfolder]: 371/892 cut-off events. [2022-10-17 10:43:14,838 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-10-17 10:43:14,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 892 events. 371/892 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4998 event pairs, 86 based on Foata normal form. 20/877 useless extension candidates. Maximal degree in co-relation 1667. Up to 308 conditions per place. [2022-10-17 10:43:14,849 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 24 selfloop transitions, 2 changer transitions 31/171 dead transitions. [2022-10-17 10:43:14,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 171 transitions, 507 flow [2022-10-17 10:43:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:43:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:43:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1238 transitions. [2022-10-17 10:43:14,855 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8761500353857041 [2022-10-17 10:43:14,856 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1238 transitions. [2022-10-17 10:43:14,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1238 transitions. [2022-10-17 10:43:14,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:14,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1238 transitions. [2022-10-17 10:43:14,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.55555555555554) internal successors, (1238), 9 states have internal predecessors, (1238), 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) [2022-10-17 10:43:14,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 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) [2022-10-17 10:43:14,875 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 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) [2022-10-17 10:43:14,875 INFO L175 Difference]: Start difference. First operand has 172 places, 134 transitions, 296 flow. Second operand 9 states and 1238 transitions. [2022-10-17 10:43:14,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 171 transitions, 507 flow [2022-10-17 10:43:14,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 171 transitions, 473 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-10-17 10:43:14,888 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 300 flow [2022-10-17 10:43:14,897 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2022-10-17 10:43:14,898 INFO L287 CegarLoopForPetriNet]: 164 programPoint places, -5 predicate places. [2022-10-17 10:43:14,899 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 300 flow [2022-10-17 10:43:14,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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) [2022-10-17 10:43:14,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:14,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:14,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:43:14,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:43:14,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2106036995, now seen corresponding path program 1 times [2022-10-17 10:43:14,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:14,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610926573] [2022-10-17 10:43:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:16,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:16,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610926573] [2022-10-17 10:43:16,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610926573] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:16,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:16,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:43:16,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752686009] [2022-10-17 10:43:16,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:16,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:43:16,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:16,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:43:16,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:43:16,157 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 157 [2022-10-17 10:43:16,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 300 flow. Second operand has 9 states, 9 states have (on average 127.22222222222223) internal successors, (1145), 9 states have internal predecessors, (1145), 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) [2022-10-17 10:43:16,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:16,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 157 [2022-10-17 10:43:16,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:18,618 INFO L130 PetriNetUnfolder]: 1492/3175 cut-off events. [2022-10-17 10:43:18,619 INFO L131 PetriNetUnfolder]: For 604/604 co-relation queries the response was YES. [2022-10-17 10:43:18,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6273 conditions, 3175 events. 1492/3175 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 22553 event pairs, 600 based on Foata normal form. 48/3057 useless extension candidates. Maximal degree in co-relation 6186. Up to 879 conditions per place. [2022-10-17 10:43:18,660 INFO L137 encePairwiseOnDemand]: 145/157 looper letters, 55 selfloop transitions, 14 changer transitions 56/233 dead transitions. [2022-10-17 10:43:18,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 233 transitions, 819 flow [2022-10-17 10:43:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:43:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:43:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2003 transitions. [2022-10-17 10:43:18,670 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8505307855626327 [2022-10-17 10:43:18,671 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2003 transitions. [2022-10-17 10:43:18,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2003 transitions. [2022-10-17 10:43:18,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:18,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2003 transitions. [2022-10-17 10:43:18,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 133.53333333333333) internal successors, (2003), 15 states have internal predecessors, (2003), 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) [2022-10-17 10:43:18,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 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) [2022-10-17 10:43:18,691 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 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) [2022-10-17 10:43:18,692 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 300 flow. Second operand 15 states and 2003 transitions. [2022-10-17 10:43:18,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 233 transitions, 819 flow [2022-10-17 10:43:18,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 233 transitions, 761 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-10-17 10:43:18,729 INFO L231 Difference]: Finished difference. Result has 172 places, 144 transitions, 385 flow [2022-10-17 10:43:18,729 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=385, PETRI_PLACES=172, PETRI_TRANSITIONS=144} [2022-10-17 10:43:18,732 INFO L287 CegarLoopForPetriNet]: 164 programPoint places, 8 predicate places. [2022-10-17 10:43:18,733 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 144 transitions, 385 flow [2022-10-17 10:43:18,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 127.22222222222223) internal successors, (1145), 9 states have internal predecessors, (1145), 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) [2022-10-17 10:43:18,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:18,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:18,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:43:18,735 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:43:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1716040752, now seen corresponding path program 1 times [2022-10-17 10:43:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:18,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508753457] [2022-10-17 10:43:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:19,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:19,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508753457] [2022-10-17 10:43:19,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508753457] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:19,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:19,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:43:19,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106651648] [2022-10-17 10:43:19,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:19,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:43:19,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:43:19,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:43:19,506 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 157 [2022-10-17 10:43:19,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 144 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 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) [2022-10-17 10:43:19,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:19,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 157 [2022-10-17 10:43:19,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:26,464 INFO L130 PetriNetUnfolder]: 10936/17904 cut-off events. [2022-10-17 10:43:26,465 INFO L131 PetriNetUnfolder]: For 3891/3891 co-relation queries the response was YES. [2022-10-17 10:43:26,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38956 conditions, 17904 events. 10936/17904 cut-off events. For 3891/3891 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 141303 event pairs, 654 based on Foata normal form. 0/17442 useless extension candidates. Maximal degree in co-relation 38864. Up to 6247 conditions per place. [2022-10-17 10:43:26,660 INFO L137 encePairwiseOnDemand]: 146/157 looper letters, 64 selfloop transitions, 8 changer transitions 70/256 dead transitions. [2022-10-17 10:43:26,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 256 transitions, 1026 flow [2022-10-17 10:43:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:43:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1384 transitions. [2022-10-17 10:43:26,668 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8815286624203822 [2022-10-17 10:43:26,668 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1384 transitions. [2022-10-17 10:43:26,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1384 transitions. [2022-10-17 10:43:26,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:26,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1384 transitions. [2022-10-17 10:43:26,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 138.4) internal successors, (1384), 10 states have internal predecessors, (1384), 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) [2022-10-17 10:43:26,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 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) [2022-10-17 10:43:26,683 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 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) [2022-10-17 10:43:26,684 INFO L175 Difference]: Start difference. First operand has 172 places, 144 transitions, 385 flow. Second operand 10 states and 1384 transitions. [2022-10-17 10:43:26,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 256 transitions, 1026 flow [2022-10-17 10:43:26,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 256 transitions, 1008 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-10-17 10:43:26,757 INFO L231 Difference]: Finished difference. Result has 169 places, 149 transitions, 441 flow [2022-10-17 10:43:26,757 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=169, PETRI_TRANSITIONS=149} [2022-10-17 10:43:26,758 INFO L287 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2022-10-17 10:43:26,759 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 149 transitions, 441 flow [2022-10-17 10:43:26,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 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) [2022-10-17 10:43:26,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:26,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:26,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:43:26,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:43:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:26,762 INFO L85 PathProgramCache]: Analyzing trace with hash -960565605, now seen corresponding path program 1 times [2022-10-17 10:43:26,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:26,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165813109] [2022-10-17 10:43:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:26,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165813109] [2022-10-17 10:43:27,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165813109] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:27,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:27,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:43:27,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90499727] [2022-10-17 10:43:27,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:27,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:43:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:27,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:43:27,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:43:27,499 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 157 [2022-10-17 10:43:27,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 149 transitions, 441 flow. Second operand has 7 states, 7 states have (on average 128.71428571428572) internal successors, (901), 7 states have internal predecessors, (901), 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) [2022-10-17 10:43:27,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:27,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 157 [2022-10-17 10:43:27,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand