./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test27-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test27-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS --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 78863f43fa37191b47f0d738bb1bc2018c82b38cb68dad85c455cdbd7fd69aa4 --- 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-4e7fbc6 [2022-11-23 03:18:43,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:18:43,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:18:43,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:18:43,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:18:43,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:18:43,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:18:43,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:18:43,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:18:43,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:18:43,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:18:43,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:18:43,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:18:43,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:18:43,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:18:43,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:18:43,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:18:43,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:18:43,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:18:43,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:18:43,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:18:43,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:18:43,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:18:43,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:18:43,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:18:43,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:18:43,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:18:43,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:18:43,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:18:43,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:18:43,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:18:43,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:18:43,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:18:43,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:18:43,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:18:43,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:18:43,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:18:43,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:18:43,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:18:43,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:18:43,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:18:43,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:18:43,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:18:43,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:18:43,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:18:43,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:18:43,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:18:43,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:18:43,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:18:43,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:18:43,548 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:18:43,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:18:43,549 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:18:43,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:18:43,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:18:43,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:18:43,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:18:43,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:18:43,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:18:43,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:18:43,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:18:43,552 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:18:43,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:18:43,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:18:43,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:18:43,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:18:43,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:18:43,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:18:43,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:18:43,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:18:43,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:18:43,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:18:43,555 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:18:43,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:18:43,556 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:18:43,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:18:43,556 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78863f43fa37191b47f0d738bb1bc2018c82b38cb68dad85c455cdbd7fd69aa4 [2022-11-23 03:18:43,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:18:43,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:18:43,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:18:43,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:18:43,872 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:18:43,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/ldv-regression/test27-1.c [2022-11-23 03:18:46,952 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:18:47,166 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:18:47,166 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/sv-benchmarks/c/ldv-regression/test27-1.c [2022-11-23 03:18:47,173 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/data/f490c3ee8/584497943aaa45daa59ccc518654596c/FLAGe8e6e9f08 [2022-11-23 03:18:47,189 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/data/f490c3ee8/584497943aaa45daa59ccc518654596c [2022-11-23 03:18:47,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:18:47,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:18:47,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:18:47,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:18:47,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:18:47,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217d68c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47, skipping insertion in model container [2022-11-23 03:18:47,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:18:47,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:18:47,410 WARN L237 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_8a049972-7994-4cec-bca7-27dbf12cd2c3/sv-benchmarks/c/ldv-regression/test27-1.c[1154,1167] [2022-11-23 03:18:47,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:18:47,429 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:18:47,473 WARN L237 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_8a049972-7994-4cec-bca7-27dbf12cd2c3/sv-benchmarks/c/ldv-regression/test27-1.c[1154,1167] [2022-11-23 03:18:47,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:18:47,493 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:18:47,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47 WrapperNode [2022-11-23 03:18:47,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:18:47,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:18:47,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:18:47,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:18:47,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,560 INFO L138 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2022-11-23 03:18:47,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:18:47,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:18:47,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:18:47,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:18:47,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,607 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:18:47,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:18:47,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:18:47,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:18:47,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (1/1) ... [2022-11-23 03:18:47,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:18:47,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:18:47,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:18:47,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:18:47,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 03:18:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:18:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:18:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 03:18:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:18:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:18:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:18:47,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:18:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:18:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:18:47,822 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:18:47,824 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:18:48,024 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:18:48,030 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:18:48,031 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 03:18:48,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:18:48 BoogieIcfgContainer [2022-11-23 03:18:48,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:18:48,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:18:48,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:18:48,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:18:48,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:18:47" (1/3) ... [2022-11-23 03:18:48,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5e2d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:18:48, skipping insertion in model container [2022-11-23 03:18:48,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:18:47" (2/3) ... [2022-11-23 03:18:48,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5e2d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:18:48, skipping insertion in model container [2022-11-23 03:18:48,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:18:48" (3/3) ... [2022-11-23 03:18:48,044 INFO L112 eAbstractionObserver]: Analyzing ICFG test27-1.c [2022-11-23 03:18:48,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:18:48,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:18:48,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:18:48,162 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;@6679b33f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:18:48,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:18:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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) [2022-11-23 03:18:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 03:18:48,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:18:48,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:48,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:18:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash -631347226, now seen corresponding path program 1 times [2022-11-23 03:18:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:18:48,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615670522] [2022-11-23 03:18:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:18:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:18:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:18:48,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:18:48,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615670522] [2022-11-23 03:18:48,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615670522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:18:48,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:18:48,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:18:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546927366] [2022-11-23 03:18:48,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:18:48,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:18:48,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:18:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:18:48,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:18:48,728 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-23 03:18:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:18:48,759 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2022-11-23 03:18:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:18:48,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-11-23 03:18:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:18:48,770 INFO L225 Difference]: With dead ends: 32 [2022-11-23 03:18:48,771 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 03:18:48,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:18:48,777 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:18:48,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:18:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 03:18:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-11-23 03:18:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-11-23 03:18:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-23 03:18:48,812 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2022-11-23 03:18:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:18:48,812 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-23 03:18:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-23 03:18:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-23 03:18:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 03:18:48,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:18:48,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:48,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:18:48,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:18:48,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1434190826, now seen corresponding path program 1 times [2022-11-23 03:18:48,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:18:48,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296498014] [2022-11-23 03:18:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:48,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:18:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:18:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:18:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:18:49,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296498014] [2022-11-23 03:18:49,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296498014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:18:49,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346883507] [2022-11-23 03:18:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:49,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:49,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:18:49,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:18:49,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:18:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:18:49,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:18:49,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:18:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:18:49,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:18:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:18:49,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346883507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:18:49,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:18:49,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 03:18:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605113343] [2022-11-23 03:18:49,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:18:49,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:18:49,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:18:49,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:18:49,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:18:49,242 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-23 03:18:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:18:49,284 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-23 03:18:49,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:18:49,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 13 [2022-11-23 03:18:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:18:49,286 INFO L225 Difference]: With dead ends: 29 [2022-11-23 03:18:49,286 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 03:18:49,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:18:49,288 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:18:49,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:18:49,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 03:18:49,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-23 03:18:49,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2022-11-23 03:18:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-23 03:18:49,293 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2022-11-23 03:18:49,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:18:49,294 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-23 03:18:49,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-23 03:18:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-23 03:18:49,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 03:18:49,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:18:49,295 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:49,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 03:18:49,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:49,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:18:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1444204464, now seen corresponding path program 2 times [2022-11-23 03:18:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:18:49,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959506655] [2022-11-23 03:18:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:49,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:18:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:18:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:18:49,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:18:49,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959506655] [2022-11-23 03:18:49,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959506655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:18:49,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283747855] [2022-11-23 03:18:49,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:18:49,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:49,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:18:49,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:18:49,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:18:49,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 03:18:49,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:18:49,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 03:18:49,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:18:50,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-23 03:18:50,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:18:50,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:18:50,300 INFO L321 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-23 03:18:50,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 114 [2022-11-23 03:18:50,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:18:50,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:18:50,418 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-23 03:18:50,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 110 [2022-11-23 03:18:50,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2022-11-23 03:18:50,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2022-11-23 03:18:50,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 03:18:50,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 03:18:50,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-23 03:18:50,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-23 03:18:50,684 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 03:18:50,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 03:18:50,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 13 [2022-11-23 03:18:50,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-23 03:18:50,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 16 [2022-11-23 03:18:50,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 03:18:50,928 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:18:50,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 105 [2022-11-23 03:18:50,997 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-23 03:18:50,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 79 [2022-11-23 03:18:51,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 03:18:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 03:18:51,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:18:51,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283747855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:18:51,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:18:51,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-23 03:18:51,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781820642] [2022-11-23 03:18:51,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:18:51,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:18:51,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:18:51,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:18:51,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:18:51,079 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-11-23 03:18:51,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:18:51,205 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-11-23 03:18:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:18:51,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 19 [2022-11-23 03:18:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:18:51,206 INFO L225 Difference]: With dead ends: 27 [2022-11-23 03:18:51,206 INFO L226 Difference]: Without dead ends: 22 [2022-11-23 03:18:51,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:18:51,208 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:18:51,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 26 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:18:51,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-23 03:18:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-23 03:18:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 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) [2022-11-23 03:18:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-23 03:18:51,214 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2022-11-23 03:18:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:18:51,214 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-23 03:18:51,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-11-23 03:18:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-23 03:18:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 03:18:51,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:18:51,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:51,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:18:51,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:51,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:18:51,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:51,422 INFO L85 PathProgramCache]: Analyzing trace with hash 903742421, now seen corresponding path program 1 times [2022-11-23 03:18:51,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:18:51,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841443724] [2022-11-23 03:18:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:51,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:18:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:18:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:18:51,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:18:51,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841443724] [2022-11-23 03:18:51,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841443724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:18:51,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312653914] [2022-11-23 03:18:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:51,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:51,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:18:51,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:18:51,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:18:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:18:51,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:18:51,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:18:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:18:51,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:18:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:18:51,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312653914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:18:51,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:18:51,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-23 03:18:51,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129033561] [2022-11-23 03:18:51,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:18:51,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:18:51,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:18:51,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:18:51,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:18:51,892 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2022-11-23 03:18:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:18:51,960 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-11-23 03:18:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:18:51,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 21 [2022-11-23 03:18:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:18:51,962 INFO L225 Difference]: With dead ends: 45 [2022-11-23 03:18:51,962 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 03:18:51,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:18:51,963 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:18:51,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 42 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:18:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 03:18:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-23 03:18:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 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) [2022-11-23 03:18:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-11-23 03:18:51,971 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 21 [2022-11-23 03:18:51,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:18:51,971 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-11-23 03:18:51,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2022-11-23 03:18:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-11-23 03:18:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 03:18:51,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:18:51,972 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:51,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 03:18:52,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:18:52,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:18:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash -926636855, now seen corresponding path program 2 times [2022-11-23 03:18:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:18:52,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327778533] [2022-11-23 03:18:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:18:52,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:18:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:19:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:19:03,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:19:03,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327778533] [2022-11-23 03:19:03,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327778533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:19:03,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691076618] [2022-11-23 03:19:03,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:19:03,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:19:03,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:19:03,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:19:03,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:19:04,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:19:04,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:19:04,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-23 03:19:04,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:19:04,127 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 03:19:04,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-23 03:19:04,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:04,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:04,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:04,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 39 [2022-11-23 03:19:04,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:04,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:04,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:04,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 46 [2022-11-23 03:19:04,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-23 03:19:04,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 46 [2022-11-23 03:19:04,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2022-11-23 03:19:04,539 INFO L321 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-11-23 03:19:04,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 77 [2022-11-23 03:19:04,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 03:19:04,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 52 [2022-11-23 03:19:04,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-23 03:19:04,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2022-11-23 03:19:04,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2022-11-23 03:19:04,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2022-11-23 03:19:04,712 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-11-23 03:19:04,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 227 treesize of output 116 [2022-11-23 03:19:04,721 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-23 03:19:04,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 31 [2022-11-23 03:19:04,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 03:19:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-23 03:19:04,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:19:04,963 INFO L321 Elim1Store]: treesize reduction 4, result has 93.0 percent of original size [2022-11-23 03:19:04,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2022-11-23 03:19:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-23 03:19:05,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691076618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:19:05,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:19:05,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7, 6] total 24 [2022-11-23 03:19:05,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008353743] [2022-11-23 03:19:05,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:19:05,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 03:19:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:19:05,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 03:19:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-11-23 03:19:05,028 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 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) [2022-11-23 03:19:06,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:19:06,656 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2022-11-23 03:19:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 03:19:06,656 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 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 33 [2022-11-23 03:19:06,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:19:06,657 INFO L225 Difference]: With dead ends: 45 [2022-11-23 03:19:06,657 INFO L226 Difference]: Without dead ends: 40 [2022-11-23 03:19:06,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=227, Invalid=1579, Unknown=0, NotChecked=0, Total=1806 [2022-11-23 03:19:06,659 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:19:06,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 58 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 03:19:06,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-23 03:19:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-23 03:19:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 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) [2022-11-23 03:19:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-11-23 03:19:06,670 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 33 [2022-11-23 03:19:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:19:06,670 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-11-23 03:19:06,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 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) [2022-11-23 03:19:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-11-23 03:19:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 03:19:06,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:19:06,672 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:19:06,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:19:06,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:19:06,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:19:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:19:06,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1546516264, now seen corresponding path program 3 times [2022-11-23 03:19:06,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:19:06,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671913393] [2022-11-23 03:19:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:19:06,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:19:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:19:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:19:17,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:19:17,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671913393] [2022-11-23 03:19:17,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671913393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:19:17,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569801228] [2022-11-23 03:19:17,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:19:17,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:19:17,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:19:17,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:19:17,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a049972-7994-4cec-bca7-27dbf12cd2c3/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:19:17,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 03:19:17,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:19:17,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-23 03:19:17,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:19:17,708 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-23 03:19:17,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 55 [2022-11-23 03:19:18,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:18,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:18,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:18,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 46 [2022-11-23 03:19:18,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:18,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:18,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 03:19:18,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 39 [2022-11-23 03:19:18,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-23 03:19:18,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-23 03:19:18,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 30 [2022-11-23 03:19:18,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 46 [2022-11-23 03:19:18,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2022-11-23 03:19:18,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2022-11-23 03:19:18,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-11-23 03:19:18,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-23 03:19:18,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-23 03:19:18,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-11-23 03:19:18,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 03:19:18,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-23 03:19:19,762 INFO L321 Elim1Store]: treesize reduction 159, result has 5.9 percent of original size [2022-11-23 03:19:19,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 13 case distinctions, treesize of input 519 treesize of output 294 [2022-11-23 03:19:19,818 INFO L321 Elim1Store]: treesize reduction 94, result has 10.5 percent of original size [2022-11-23 03:19:19,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 229 treesize of output 103 [2022-11-23 03:19:19,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2022-11-23 03:19:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-23 03:19:19,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:19:21,163 INFO L321 Elim1Store]: treesize reduction 34, result has 58.5 percent of original size [2022-11-23 03:19:21,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 14296 treesize of output 12975 [2022-11-23 03:19:21,920 INFO L321 Elim1Store]: treesize reduction 44, result has 54.6 percent of original size [2022-11-23 03:19:21,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 90400 treesize of output 73748 [2022-11-23 03:19:26,209 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:19:26,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 676799 treesize of output 667189 [2022-11-23 03:19:33,776 INFO L217 Elim1Store]: Index analysis took 144 ms [2022-11-23 03:19:39,182 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 262 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 03:19:39,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:19:39,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 4122676 treesize of output 4009530 [2022-11-23 03:19:53,872 WARN L233 SmtUtils]: Spent 14.65s on a formula simplification that was a NOOP. DAG size: 12807 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 03:20:08,260 WARN L233 SmtUtils]: Spent 14.33s on a formula simplification that was a NOOP. DAG size: 12802 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 03:20:09,336 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:20:09,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 4025056 treesize of output 3437548 [2022-11-23 03:20:24,008 WARN L233 SmtUtils]: Spent 14.62s on a formula simplification that was a NOOP. DAG size: 12803 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-23 03:20:37,418 INFO L217 Elim1Store]: Index analysis took 3297 ms