./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label22.c --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_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/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_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/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_3140b7a9-a2ed-4236-90be-b3a9afac856f/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 4813005008457a5d4e6ae5277d71ca9796b28c553541eb8e67cfaf33286f04c4 --- 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 11:01:47,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:01:47,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:01:47,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:01:47,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:01:47,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:01:47,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:01:47,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:01:47,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:01:47,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:01:47,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:01:47,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:01:47,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:01:47,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:01:47,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:01:47,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:01:47,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:01:47,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:01:47,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:01:47,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:01:47,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:01:47,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:01:47,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:01:47,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:01:47,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:01:47,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:01:47,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:01:47,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:01:47,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:01:47,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:01:47,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:01:47,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:01:47,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:01:47,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:01:47,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:01:47,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:01:47,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:01:47,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:01:47,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:01:47,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:01:47,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:01:47,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:01:47,543 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:01:47,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:01:47,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:01:47,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:01:47,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:01:47,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:01:47,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:01:47,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:01:47,546 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:01:47,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:01:47,547 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:01:47,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:01:47,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:01:47,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:01:47,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:01:47,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:01:47,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:01:47,549 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:01:47,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:01:47,549 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:01:47,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:01:47,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:01:47,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:01:47,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:01:47,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:01:47,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:01:47,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:01:47,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:01:47,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:01:47,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:01:47,553 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:01:47,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:01:47,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:01:47,554 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_3140b7a9-a2ed-4236-90be-b3a9afac856f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4813005008457a5d4e6ae5277d71ca9796b28c553541eb8e67cfaf33286f04c4 [2022-10-17 11:01:47,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:01:47,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:01:47,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:01:47,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:01:47,887 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:01:47,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem17_label22.c [2022-10-17 11:01:47,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/data/7c11aa330/138e44684ead4033b8a7462fec8da814/FLAG509a03104 [2022-10-17 11:01:48,862 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:01:48,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/sv-benchmarks/c/eca-rers2012/Problem17_label22.c [2022-10-17 11:01:48,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/data/7c11aa330/138e44684ead4033b8a7462fec8da814/FLAG509a03104 [2022-10-17 11:01:48,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/data/7c11aa330/138e44684ead4033b8a7462fec8da814 [2022-10-17 11:01:48,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:01:48,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:01:48,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:01:48,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:01:48,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:01:48,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:01:48" (1/1) ... [2022-10-17 11:01:48,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5869e6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:48, skipping insertion in model container [2022-10-17 11:01:48,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:01:48" (1/1) ... [2022-10-17 11:01:48,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:01:49,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:01:49,421 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_3140b7a9-a2ed-4236-90be-b3a9afac856f/sv-benchmarks/c/eca-rers2012/Problem17_label22.c[7589,7602] [2022-10-17 11:01:50,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:01:50,281 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:01:50,330 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_3140b7a9-a2ed-4236-90be-b3a9afac856f/sv-benchmarks/c/eca-rers2012/Problem17_label22.c[7589,7602] [2022-10-17 11:01:50,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:01:50,827 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:01:50,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50 WrapperNode [2022-10-17 11:01:50,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:01:50,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:01:50,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:01:50,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:01:50,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:50,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,307 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-10-17 11:01:51,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:01:51,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:01:51,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:01:51,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:01:51,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:01:51,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:01:51,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:01:51,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:01:51,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (1/1) ... [2022-10-17 11:01:51,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:01:51,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:01:51,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:01:51,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3140b7a9-a2ed-4236-90be-b3a9afac856f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:01:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:01:51,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:01:51,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:01:51,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:01:51,965 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:01:51,968 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:01:57,198 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:01:57,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:01:57,218 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 11:01:57,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:01:57 BoogieIcfgContainer [2022-10-17 11:01:57,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:01:57,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:01:57,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:01:57,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:01:57,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:01:48" (1/3) ... [2022-10-17 11:01:57,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363bf73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:01:57, skipping insertion in model container [2022-10-17 11:01:57,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:01:50" (2/3) ... [2022-10-17 11:01:57,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363bf73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:01:57, skipping insertion in model container [2022-10-17 11:01:57,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:01:57" (3/3) ... [2022-10-17 11:01:57,234 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label22.c [2022-10-17 11:01:57,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:01:57,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:01:57,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:01:57,352 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;@12561135, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:01:57,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:01:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 11:01:57,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 11:01:57,373 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:01:57,374 INFO L195 NwaCegarLoop]: 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] [2022-10-17 11:01:57,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:01:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:01:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2122806209, now seen corresponding path program 1 times [2022-10-17 11:01:57,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:01:57,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147188156] [2022-10-17 11:01:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:01:57,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:01:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:01:57,893 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 11:01:57,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:01:57,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147188156] [2022-10-17 11:01:57,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147188156] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:01:57,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:01:57,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:01:57,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235251886] [2022-10-17 11:01:57,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:01:57,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:01:57,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:01:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:01:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:01:57,954 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 11:02:02,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:02:02,367 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2022-10-17 11:02:02,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:02,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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) Word has length 51 [2022-10-17 11:02:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:02:02,394 INFO L225 Difference]: With dead ends: 1667 [2022-10-17 11:02:02,395 INFO L226 Difference]: Without dead ends: 998 [2022-10-17 11:02:02,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:02,405 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 494 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:02:02,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-10-17 11:02:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-10-17 11:02:02,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2022-10-17 11:02:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 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 11:02:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2022-10-17 11:02:02,507 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 51 [2022-10-17 11:02:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:02:02,508 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2022-10-17 11:02:02,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 11:02:02,509 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2022-10-17 11:02:02,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-10-17 11:02:02,514 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:02:02,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:02:02,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:02:02,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:02:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash 857069701, now seen corresponding path program 1 times [2022-10-17 11:02:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:02,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632299502] [2022-10-17 11:02:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:02,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:02,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:02,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632299502] [2022-10-17 11:02:02,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632299502] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:02,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:02,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:02:02,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525772192] [2022-10-17 11:02:02,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:02:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:02,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:02,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:02,871 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 11:02:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:02:06,278 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2022-10-17 11:02:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:06,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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) Word has length 116 [2022-10-17 11:02:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:02:06,291 INFO L225 Difference]: With dead ends: 2841 [2022-10-17 11:02:06,292 INFO L226 Difference]: Without dead ends: 1861 [2022-10-17 11:02:06,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:06,305 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-17 11:02:06,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-17 11:02:06,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2022-10-17 11:02:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2022-10-17 11:02:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 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 11:02:06,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2022-10-17 11:02:06,381 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 116 [2022-10-17 11:02:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:02:06,385 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2022-10-17 11:02:06,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 11:02:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2022-10-17 11:02:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-10-17 11:02:06,402 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:02:06,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:06,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:02:06,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:02:06,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:06,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1183690640, now seen corresponding path program 1 times [2022-10-17 11:02:06,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:06,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205397811] [2022-10-17 11:02:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:06,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:07,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:07,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205397811] [2022-10-17 11:02:07,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205397811] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:07,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:07,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:02:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917150952] [2022-10-17 11:02:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:07,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:02:07,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:07,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:07,148 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 11:02:11,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:02:11,210 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2022-10-17 11:02:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:11,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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) Word has length 156 [2022-10-17 11:02:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:02:11,227 INFO L225 Difference]: With dead ends: 4591 [2022-10-17 11:02:11,227 INFO L226 Difference]: Without dead ends: 2736 [2022-10-17 11:02:11,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:11,231 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-10-17 11:02:11,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-10-17 11:02:11,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-10-17 11:02:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2022-10-17 11:02:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 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 11:02:11,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2022-10-17 11:02:11,302 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 156 [2022-10-17 11:02:11,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:02:11,303 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2022-10-17 11:02:11,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 11:02:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2022-10-17 11:02:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-10-17 11:02:11,307 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:02:11,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:11,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:02:11,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:02:11,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:11,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1073477439, now seen corresponding path program 1 times [2022-10-17 11:02:11,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:11,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868442840] [2022-10-17 11:02:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:11,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:11,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:11,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868442840] [2022-10-17 11:02:11,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868442840] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:11,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:11,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:02:11,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958049986] [2022-10-17 11:02:11,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:11,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:02:11,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:11,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:11,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:11,516 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 11:02:14,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:02:14,636 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2022-10-17 11:02:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:14,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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) Word has length 162 [2022-10-17 11:02:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:02:14,672 INFO L225 Difference]: With dead ends: 6709 [2022-10-17 11:02:14,673 INFO L226 Difference]: Without dead ends: 3995 [2022-10-17 11:02:14,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:14,694 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:02:14,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-10-17 11:02:14,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-10-17 11:02:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2022-10-17 11:02:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 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 11:02:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2022-10-17 11:02:14,843 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 162 [2022-10-17 11:02:14,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:02:14,845 INFO L495 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2022-10-17 11:02:14,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 11:02:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2022-10-17 11:02:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-10-17 11:02:14,850 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:02:14,850 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:02:14,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:02:14,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:02:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2067055148, now seen corresponding path program 1 times [2022-10-17 11:02:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:14,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600684762] [2022-10-17 11:02:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:15,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:15,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600684762] [2022-10-17 11:02:15,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600684762] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:15,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:15,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:02:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445590630] [2022-10-17 11:02:15,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:15,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:02:15,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:02:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:02:15,551 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 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)