./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound2.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_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/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_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/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_568da225-4911-4c91-814f-21f0e4538dc0/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 7f0424dbafec10d34a77570c428224cb0ba56b8b9f5906b463f2dcbc550354ee --- 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 02:18:29,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:18:29,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:18:29,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:18:29,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:18:29,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:18:29,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:18:29,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:18:29,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:18:29,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:18:29,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:18:29,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:18:29,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:18:29,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:18:29,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:18:29,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:18:29,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:18:29,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:18:29,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:18:29,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:18:29,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:18:29,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:18:29,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:18:29,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:18:29,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:18:29,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:18:29,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:18:29,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:18:29,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:18:29,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:18:29,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:18:29,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:18:29,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:18:29,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:18:29,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:18:29,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:18:29,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:18:29,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:18:29,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:18:29,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:18:29,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:18:29,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:18:29,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:18:29,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:18:29,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:18:29,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:18:29,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:18:29,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:18:29,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:18:29,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:18:29,627 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:18:29,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:18:29,628 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:18:29,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:18:29,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:18:29,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:18:29,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:18:29,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:18:29,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:18:29,630 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:18:29,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:18:29,631 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:18:29,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:18:29,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:18:29,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:18:29,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:18:29,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:18:29,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:18:29,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:18:29,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:18:29,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:18:29,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:18:29,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:18:29,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:18:29,634 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:18:29,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:18:29,635 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_568da225-4911-4c91-814f-21f0e4538dc0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f0424dbafec10d34a77570c428224cb0ba56b8b9f5906b463f2dcbc550354ee [2022-11-23 02:18:29,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:18:30,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:18:30,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:18:30,016 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:18:30,017 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:18:30,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound2.c [2022-11-23 02:18:33,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:18:33,380 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:18:33,381 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound2.c [2022-11-23 02:18:33,389 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/data/022da05df/957fc9e7cbbf4d148de14119bed757f6/FLAG263dd4487 [2022-11-23 02:18:33,415 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/data/022da05df/957fc9e7cbbf4d148de14119bed757f6 [2022-11-23 02:18:33,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:18:33,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:18:33,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:18:33,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:18:33,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:18:33,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7155dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33, skipping insertion in model container [2022-11-23 02:18:33,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:18:33,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:18:33,641 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_568da225-4911-4c91-814f-21f0e4538dc0/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound2.c[524,537] [2022-11-23 02:18:33,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:18:33,680 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:18:33,710 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_568da225-4911-4c91-814f-21f0e4538dc0/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound2.c[524,537] [2022-11-23 02:18:33,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:18:33,785 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:18:33,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33 WrapperNode [2022-11-23 02:18:33,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:18:33,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:18:33,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:18:33,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:18:33,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,833 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-11-23 02:18:33,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:18:33,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:18:33,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:18:33,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:18:33,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:18:33,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:18:33,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:18:33,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:18:33,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (1/1) ... [2022-11-23 02:18:33,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:18:33,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:33,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:18:33,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:18:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:18:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:18:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:18:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:18:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 02:18:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 02:18:34,067 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:18:34,069 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:18:34,264 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:18:34,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:18:34,271 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:18:34,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:18:34 BoogieIcfgContainer [2022-11-23 02:18:34,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:18:34,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:18:34,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:18:34,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:18:34,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:18:33" (1/3) ... [2022-11-23 02:18:34,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bacc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:18:34, skipping insertion in model container [2022-11-23 02:18:34,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:18:33" (2/3) ... [2022-11-23 02:18:34,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bacc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:18:34, skipping insertion in model container [2022-11-23 02:18:34,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:18:34" (3/3) ... [2022-11-23 02:18:34,289 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound2.c [2022-11-23 02:18:34,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:18:34,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:18:34,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:18:34,435 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;@2abd8982, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:18:34,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:18:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 02:18:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 02:18:34,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:34,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:34,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:34,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash -563977895, now seen corresponding path program 1 times [2022-11-23 02:18:34,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:34,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570010715] [2022-11-23 02:18:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:34,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:34,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570010715] [2022-11-23 02:18:34,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 02:18:34,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879129013] [2022-11-23 02:18:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:34,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:34,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:34,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:34,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:18:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:34,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 02:18:34,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:34,754 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 02:18:34,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:18:34,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879129013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:34,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:34,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:18:34,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829041957] [2022-11-23 02:18:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:34,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:18:34,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:34,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:18:34,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:18:34,834 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:34,859 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-11-23 02:18:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:18:34,862 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 02:18:34,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:34,871 INFO L225 Difference]: With dead ends: 43 [2022-11-23 02:18:34,872 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 02:18:34,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:18:34,879 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:34,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:18:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 02:18:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-23 02:18:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:18:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2022-11-23 02:18:34,925 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2022-11-23 02:18:34,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:34,926 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-11-23 02:18:34,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:34,926 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2022-11-23 02:18:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 02:18:34,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:34,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:34,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 02:18:35,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 02:18:35,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:35,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1986058659, now seen corresponding path program 1 times [2022-11-23 02:18:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:35,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100999702] [2022-11-23 02:18:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:35,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:35,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100999702] [2022-11-23 02:18:35,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 02:18:35,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030525258] [2022-11-23 02:18:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:35,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:35,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:35,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:35,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:18:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:35,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:18:35,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:35,367 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 02:18:35,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:18:35,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030525258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:35,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:35,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:18:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099167681] [2022-11-23 02:18:35,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:35,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:18:35,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:18:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:18:35,381 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:35,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:35,438 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2022-11-23 02:18:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:18:35,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 02:18:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:35,441 INFO L225 Difference]: With dead ends: 29 [2022-11-23 02:18:35,441 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 02:18:35,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:18:35,447 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:35,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:18:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 02:18:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 02:18:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:18:35,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-11-23 02:18:35,460 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 10 [2022-11-23 02:18:35,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:35,462 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-11-23 02:18:35,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-11-23 02:18:35,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 02:18:35,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:35,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:35,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:18:35,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:35,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:35,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:35,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1984271199, now seen corresponding path program 1 times [2022-11-23 02:18:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:35,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786256531] [2022-11-23 02:18:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:35,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:18:35,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247432964] [2022-11-23 02:18:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:35,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:35,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:35,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:35,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:18:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:35,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 02:18:35,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:36,069 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 02:18:36,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:18:36,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:36,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786256531] [2022-11-23 02:18:36,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:18:36,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247432964] [2022-11-23 02:18:36,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247432964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:36,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:36,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:18:36,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320326740] [2022-11-23 02:18:36,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:36,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:18:36,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:18:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:18:36,074 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:36,323 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2022-11-23 02:18:36,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:18:36,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 02:18:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:36,327 INFO L225 Difference]: With dead ends: 34 [2022-11-23 02:18:36,327 INFO L226 Difference]: Without dead ends: 32 [2022-11-23 02:18:36,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:18:36,331 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 50 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:36,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 51 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:18:36,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-23 02:18:36,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2022-11-23 02:18:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 02:18:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-23 02:18:36,345 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 10 [2022-11-23 02:18:36,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:36,345 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-23 02:18:36,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:18:36,346 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-23 02:18:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 02:18:36,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:36,347 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:36,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 02:18:36,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 02:18:36,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1194524114, now seen corresponding path program 1 times [2022-11-23 02:18:36,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:36,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737282256] [2022-11-23 02:18:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:36,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:36,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:18:36,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497357824] [2022-11-23 02:18:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:36,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:36,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:36,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:36,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:18:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:36,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 02:18:36,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:37,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:18:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:37,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:37,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737282256] [2022-11-23 02:18:37,369 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:18:37,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497357824] [2022-11-23 02:18:37,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497357824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:18:37,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:18:37,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2022-11-23 02:18:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107161972] [2022-11-23 02:18:37,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:18:37,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 02:18:37,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 02:18:37,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:18:37,377 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:18:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:37,945 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-11-23 02:18:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:18:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-23 02:18:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:37,949 INFO L225 Difference]: With dead ends: 47 [2022-11-23 02:18:37,949 INFO L226 Difference]: Without dead ends: 45 [2022-11-23 02:18:37,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-11-23 02:18:37,952 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 87 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:37,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 71 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:18:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-23 02:18:37,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2022-11-23 02:18:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 02:18:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-11-23 02:18:37,967 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2022-11-23 02:18:37,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:37,968 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-23 02:18:37,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:18:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-11-23 02:18:37,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 02:18:37,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:37,970 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:37,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:18:38,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:38,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:38,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1756733383, now seen corresponding path program 1 times [2022-11-23 02:18:38,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:38,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593456960] [2022-11-23 02:18:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:38,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:18:38,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477774403] [2022-11-23 02:18:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:38,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:38,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:38,194 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:38,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:18:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:38,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:18:38,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:38,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:18:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:38,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:38,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593456960] [2022-11-23 02:18:38,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:18:38,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477774403] [2022-11-23 02:18:38,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477774403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:18:38,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:18:38,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2022-11-23 02:18:38,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566039900] [2022-11-23 02:18:38,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:18:38,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:18:38,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:18:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:18:38,473 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:18:38,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:38,539 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2022-11-23 02:18:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:18:38,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-23 02:18:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:38,544 INFO L225 Difference]: With dead ends: 57 [2022-11-23 02:18:38,544 INFO L226 Difference]: Without dead ends: 47 [2022-11-23 02:18:38,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:18:38,550 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:38,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 89 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:18:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-23 02:18:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-11-23 02:18:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.303030303030303) internal successors, (43), 35 states have internal predecessors, (43), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 02:18:38,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2022-11-23 02:18:38,581 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 19 [2022-11-23 02:18:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:38,582 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2022-11-23 02:18:38,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:18:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2022-11-23 02:18:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 02:18:38,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:38,585 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:38,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:18:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:38,793 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:38,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:38,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1754945923, now seen corresponding path program 1 times [2022-11-23 02:18:38,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:38,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503028061] [2022-11-23 02:18:38,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:38,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:38,815 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:18:38,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731816969] [2022-11-23 02:18:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:38,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:38,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:38,817 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:38,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:18:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:38,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 02:18:38,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:39,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:18:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:18:41,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:41,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503028061] [2022-11-23 02:18:41,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:18:41,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731816969] [2022-11-23 02:18:41,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731816969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:18:41,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:18:41,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-23 02:18:41,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447970680] [2022-11-23 02:18:41,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:18:41,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 02:18:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 02:18:41,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:18:41,216 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:18:44,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:44,370 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2022-11-23 02:18:44,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:18:44,371 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-11-23 02:18:44,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:44,372 INFO L225 Difference]: With dead ends: 68 [2022-11-23 02:18:44,372 INFO L226 Difference]: Without dead ends: 66 [2022-11-23 02:18:44,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2022-11-23 02:18:44,376 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 221 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:44,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 58 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 02:18:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-23 02:18:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 49. [2022-11-23 02:18:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 38 states have internal predecessors, (46), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 02:18:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2022-11-23 02:18:44,398 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 19 [2022-11-23 02:18:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:44,399 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2022-11-23 02:18:44,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:18:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2022-11-23 02:18:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 02:18:44,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:44,406 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:44,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-23 02:18:44,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 02:18:44,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1942139802, now seen corresponding path program 1 times [2022-11-23 02:18:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:44,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828788559] [2022-11-23 02:18:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:44,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:18:44,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804121241] [2022-11-23 02:18:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:44,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:44,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:44,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:44,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:18:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:18:44,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 02:18:44,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:18:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:18:44,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:18:44,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:18:44,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828788559] [2022-11-23 02:18:44,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 02:18:44,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804121241] [2022-11-23 02:18:44,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804121241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:18:44,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:18:44,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:18:44,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339359314] [2022-11-23 02:18:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:18:44,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:18:44,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:18:44,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:18:44,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:18:44,796 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:18:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:18:44,985 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2022-11-23 02:18:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:18:44,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-11-23 02:18:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:18:44,988 INFO L225 Difference]: With dead ends: 68 [2022-11-23 02:18:44,988 INFO L226 Difference]: Without dead ends: 52 [2022-11-23 02:18:44,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:18:44,990 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:18:44,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 83 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:18:44,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-23 02:18:45,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2022-11-23 02:18:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 40 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 02:18:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2022-11-23 02:18:45,029 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 21 [2022-11-23 02:18:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:18:45,029 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2022-11-23 02:18:45,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 02:18:45,029 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2022-11-23 02:18:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 02:18:45,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:18:45,031 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:45,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:18:45,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 02:18:45,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:18:45,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:18:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash 55344605, now seen corresponding path program 2 times [2022-11-23 02:18:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:18:45,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058907730] [2022-11-23 02:18:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:18:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:18:45,248 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 02:18:45,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174821875] [2022-11-23 02:18:45,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:18:45,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:45,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:18:45,257 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:18:45,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:18:45,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:18:45,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-23 02:18:45,345 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:18:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:18:45,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:18:45,396 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:18:45,397 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 02:18:45,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:18:45,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:18:45,602 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:18:45,605 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:18:45,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:18:45 BoogieIcfgContainer [2022-11-23 02:18:45,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:18:45,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:18:45,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:18:45,636 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:18:45,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:18:34" (3/4) ... [2022-11-23 02:18:45,639 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 02:18:45,679 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:18:45,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:18:45,680 INFO L158 Benchmark]: Toolchain (without parser) took 12257.27ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 120.9MB in the beginning and 146.1MB in the end (delta: -25.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-23 02:18:45,681 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:18:45,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.71ms. Allocated memory is still 155.2MB. Free memory was 120.9MB in the beginning and 126.2MB in the end (delta: -5.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 02:18:45,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.24ms. Allocated memory is still 155.2MB. Free memory was 126.2MB in the beginning and 124.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:18:45,682 INFO L158 Benchmark]: Boogie Preprocessor took 28.74ms. Allocated memory is still 155.2MB. Free memory was 124.3MB in the beginning and 122.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:18:45,682 INFO L158 Benchmark]: RCFGBuilder took 409.35ms. Allocated memory is still 155.2MB. Free memory was 122.9MB in the beginning and 111.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 02:18:45,682 INFO L158 Benchmark]: TraceAbstraction took 11359.11ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 110.4MB in the beginning and 148.2MB in the end (delta: -37.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:18:45,683 INFO L158 Benchmark]: Witness Printer took 44.58ms. Allocated memory is still 186.6MB. Free memory was 148.2MB in the beginning and 146.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:18:45,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.71ms. Allocated memory is still 155.2MB. Free memory was 120.9MB in the beginning and 126.2MB in the end (delta: -5.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.24ms. Allocated memory is still 155.2MB. Free memory was 126.2MB in the beginning and 124.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.74ms. Allocated memory is still 155.2MB. Free memory was 124.3MB in the beginning and 122.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 409.35ms. Allocated memory is still 155.2MB. Free memory was 122.9MB in the beginning and 111.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11359.11ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 110.4MB in the beginning and 148.2MB in the end (delta: -37.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.58ms. Allocated memory is still 186.6MB. Free memory was 148.2MB in the beginning and 146.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) [L9] COND FALSE !(!cond) VAL [cond=1, counter=0, unknown-#in~cond-unknown=1] [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [a=4, b=4, counter=0, p=1, q=0, x=4, y=4] [L33] EXPR counter++ VAL [a=4, b=4, counter=1, counter++=0, p=1, q=0, x=4, y=4] [L33] COND TRUE counter++<2 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [counter=1, unknown-#in~cond-unknown=1] [L12] COND FALSE !(!(cond)) VAL [cond=1, counter=1, unknown-#in~cond-unknown=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=4, b=4, counter=1, p=1, q=0, x=4, y=4] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=4, b=4, counter=1, p=1, q=0, x=4, y=4] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=2, b=2, counter=1, p=4, q=0, x=4, y=4] [L33] EXPR counter++ VAL [a=2, b=2, counter=2, counter++=1, p=4, q=0, x=4, y=4] [L33] COND TRUE counter++<2 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [counter=2, unknown-#in~cond-unknown=1] [L12] COND FALSE !(!(cond)) VAL [cond=1, counter=2, unknown-#in~cond-unknown=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=2, b=2, counter=2, p=4, q=0, x=4, y=4] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=2, b=2, counter=2, p=4, q=0, x=4, y=4] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=1, b=1, counter=2, p=16, q=0, x=4, y=4] [L33] EXPR counter++ VAL [a=1, b=1, counter=3, counter++=2, p=16, q=0, x=4, y=4] [L33] COND FALSE !(counter++<2) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [counter=3, unknown-#in~cond-unknown=0] [L12] COND TRUE !(cond) VAL [cond=0, counter=3, unknown-#in~cond-unknown=0] [L14] reach_error() VAL [cond=0, counter=3, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.2s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 430 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 430 mSDsluCounter, 444 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 304 mSDsCounter, 141 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 552 IncrementalHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 141 mSolverCounterUnsat, 140 mSDtfsCounter, 552 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 105 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 42 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 148 ConstructedInterpolants, 1 QuantifiedInterpolants, 960 SizeOfPredicates, 24 NumberOfNonLiveVariables, 483 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 16/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-23 02:18:45,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_568da225-4911-4c91-814f-21f0e4538dc0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE