./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8 --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 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff --- 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-e04fb08 [2022-11-16 12:18:05,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:18:05,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:18:05,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:18:05,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:18:05,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:18:05,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:18:05,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:18:05,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:18:05,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:18:05,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:18:05,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:18:05,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:18:05,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:18:05,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:18:05,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:18:05,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:18:05,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:18:05,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:18:05,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:18:05,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:18:05,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:18:05,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:18:05,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:18:05,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:18:05,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:18:05,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:18:05,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:18:05,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:18:05,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:18:05,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:18:05,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:18:05,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:18:05,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:18:05,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:18:05,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:18:05,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:18:05,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:18:05,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:18:05,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:18:05,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:18:05,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:18:05,645 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:18:05,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:18:05,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:18:05,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:18:05,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:18:05,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:18:05,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:18:05,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:18:05,649 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:18:05,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:18:05,650 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:18:05,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:18:05,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:18:05,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:18:05,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:18:05,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:18:05,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:18:05,652 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:18:05,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:18:05,652 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:18:05,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:18:05,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:18:05,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:18:05,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:18:05,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:05,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:18:05,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:18:05,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:18:05,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:18:05,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:18:05,657 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:18:05,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:18:05,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:18:05,658 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_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4221a6bcee4165c3049aa9b16a70613c9e290b9c0a4ff35026a6f2dcff16f9ff [2022-11-16 12:18:05,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:18:06,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:18:06,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:18:06,040 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:18:06,041 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:18:06,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2022-11-16 12:18:06,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/data/2270b7cea/9970b24d10114c65923addf523017127/FLAGe74de3f64 [2022-11-16 12:18:06,766 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:18:06,767 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2022-11-16 12:18:06,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/data/2270b7cea/9970b24d10114c65923addf523017127/FLAGe74de3f64 [2022-11-16 12:18:07,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/data/2270b7cea/9970b24d10114c65923addf523017127 [2022-11-16 12:18:07,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:18:07,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:18:07,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:07,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:18:07,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:18:07,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66efab02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07, skipping insertion in model container [2022-11-16 12:18:07,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:18:07,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:18:07,370 WARN L229 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_06896d69-d5cc-42f5-ae4f-affd0781a173/sv-benchmarks/c/weaver/chl-match-trans.wvr.c[2954,2967] [2022-11-16 12:18:07,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:07,386 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:18:07,414 WARN L229 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_06896d69-d5cc-42f5-ae4f-affd0781a173/sv-benchmarks/c/weaver/chl-match-trans.wvr.c[2954,2967] [2022-11-16 12:18:07,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:07,432 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:18:07,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07 WrapperNode [2022-11-16 12:18:07,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:07,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:07,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:18:07,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:18:07,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,499 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 202 [2022-11-16 12:18:07,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:07,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:18:07,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:18:07,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:18:07,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:18:07,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:18:07,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:18:07,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:18:07,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (1/1) ... [2022-11-16 12:18:07,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:07,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:07,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:18:07,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06896d69-d5cc-42f5-ae4f-affd0781a173/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:18:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:18:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:18:07,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:18:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:18:07,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:18:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:18:07,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:18:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:18:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:18:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:18:07,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:18:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:18:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:18:07,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:18:07,647 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:18:07,815 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:18:07,816 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:18:08,474 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:18:08,495 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:18:08,495 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:18:08,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:08 BoogieIcfgContainer [2022-11-16 12:18:08,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:18:08,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:18:08,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:18:08,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:18:08,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:18:07" (1/3) ... [2022-11-16 12:18:08,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32130ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:08, skipping insertion in model container [2022-11-16 12:18:08,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:07" (2/3) ... [2022-11-16 12:18:08,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32130ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:18:08, skipping insertion in model container [2022-11-16 12:18:08,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:18:08" (3/3) ... [2022-11-16 12:18:08,515 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2022-11-16 12:18:08,527 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:18:08,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:18:08,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:18:08,540 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:18:08,793 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:18:08,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 281 transitions, 586 flow [2022-11-16 12:18:08,995 INFO L130 PetriNetUnfolder]: 13/278 cut-off events. [2022-11-16 12:18:08,996 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:18:09,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 278 events. 13/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 408 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2022-11-16 12:18:09,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 281 transitions, 586 flow [2022-11-16 12:18:09,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 267 transitions, 552 flow [2022-11-16 12:18:09,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:18:09,034 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;@2fadcb25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:18:09,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:18:09,158 INFO L130 PetriNetUnfolder]: 13/266 cut-off events. [2022-11-16 12:18:09,159 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:18:09,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:09,160 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:09,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:18:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1578198430, now seen corresponding path program 1 times [2022-11-16 12:18:09,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:09,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443623067] [2022-11-16 12:18:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:09,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:15,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:15,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443623067] [2022-11-16 12:18:15,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443623067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:15,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:15,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-11-16 12:18:15,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595324664] [2022-11-16 12:18:15,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:15,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-16 12:18:15,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:15,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-16 12:18:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 12:18:15,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 281 [2022-11-16 12:18:15,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 267 transitions, 552 flow. Second operand has 43 states, 43 states have (on average 162.46511627906978) internal successors, (6986), 43 states have internal predecessors, (6986), 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) [2022-11-16 12:18:15,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:15,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 281 [2022-11-16 12:18:15,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:18:52,642 INFO L130 PetriNetUnfolder]: 36422/80694 cut-off events. [2022-11-16 12:18:52,642 INFO L131 PetriNetUnfolder]: For 2977/2977 co-relation queries the response was YES. [2022-11-16 12:18:52,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139031 conditions, 80694 events. 36422/80694 cut-off events. For 2977/2977 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 869666 event pairs, 1829 based on Foata normal form. 8618/86203 useless extension candidates. Maximal degree in co-relation 138519. Up to 5475 conditions per place. [2022-11-16 12:18:53,368 INFO L137 encePairwiseOnDemand]: 210/281 looper letters, 2234 selfloop transitions, 88 changer transitions 50/2519 dead transitions. [2022-11-16 12:18:53,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 2519 transitions, 9974 flow [2022-11-16 12:18:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-16 12:18:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-11-16 12:18:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 14740 transitions. [2022-11-16 12:18:53,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6994068801897984 [2022-11-16 12:18:53,441 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 14740 transitions. [2022-11-16 12:18:53,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 14740 transitions. [2022-11-16 12:18:53,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:18:53,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 14740 transitions. [2022-11-16 12:18:53,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 196.53333333333333) internal successors, (14740), 75 states have internal predecessors, (14740), 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) [2022-11-16 12:18:53,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 281.0) internal successors, (21356), 76 states have internal predecessors, (21356), 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) [2022-11-16 12:18:53,589 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 281.0) internal successors, (21356), 76 states have internal predecessors, (21356), 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) [2022-11-16 12:18:53,591 INFO L175 Difference]: Start difference. First operand has 264 places, 267 transitions, 552 flow. Second operand 75 states and 14740 transitions. [2022-11-16 12:18:53,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 2519 transitions, 9974 flow [2022-11-16 12:18:53,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 2519 transitions, 9846 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:18:53,685 INFO L231 Difference]: Finished difference. Result has 386 places, 321 transitions, 1072 flow [2022-11-16 12:18:53,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=1072, PETRI_PLACES=386, PETRI_TRANSITIONS=321} [2022-11-16 12:18:53,692 INFO L288 CegarLoopForPetriNet]: 264 programPoint places, 122 predicate places. [2022-11-16 12:18:53,693 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 321 transitions, 1072 flow [2022-11-16 12:18:53,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 162.46511627906978) internal successors, (6986), 43 states have internal predecessors, (6986), 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) [2022-11-16 12:18:53,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:18:53,697 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:18:53,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:18:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 592791826, now seen corresponding path program 2 times [2022-11-16 12:18:53,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:53,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121687586] [2022-11-16 12:18:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:53,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:00,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:00,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121687586] [2022-11-16 12:19:00,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121687586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:00,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:00,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-11-16 12:19:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409239375] [2022-11-16 12:19:00,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:00,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-16 12:19:00,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:00,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-16 12:19:00,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 12:19:00,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 281 [2022-11-16 12:19:00,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 321 transitions, 1072 flow. Second operand has 43 states, 43 states have (on average 162.46511627906978) internal successors, (6986), 43 states have internal predecessors, (6986), 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) [2022-11-16 12:19:00,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:00,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 281 [2022-11-16 12:19:00,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand