./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8 --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 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 --- 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-2329fc7 [2022-12-13 14:16:39,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:16:39,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:16:39,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:16:39,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:16:39,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:16:39,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:16:39,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:16:39,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:16:39,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:16:39,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:16:39,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:16:39,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:16:39,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:16:39,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:16:39,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:16:39,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:16:39,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:16:39,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:16:39,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:16:39,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:16:39,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:16:39,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:16:39,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:16:39,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:16:39,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:16:39,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:16:39,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:16:39,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:16:39,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:16:39,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:16:39,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:16:39,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:16:39,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:16:39,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:16:39,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:16:39,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:16:39,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:16:39,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:16:39,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:16:39,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:16:39,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:16:39,705 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:16:39,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:16:39,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:16:39,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:16:39,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:16:39,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:16:39,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:16:39,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:16:39,707 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:16:39,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:16:39,707 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:16:39,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:16:39,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:16:39,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:16:39,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:16:39,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:16:39,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:16:39,708 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:16:39,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:16:39,709 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:16:39,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:16:39,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:16:39,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:16:39,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:16:39,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:16:39,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:16:39,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:16:39,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:16:39,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:16:39,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:16:39,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:16:39,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:16:39,711 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:16:39,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:16:39,711 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:16:39,711 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_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 [2022-12-13 14:16:39,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:16:39,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:16:39,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:16:39,913 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:16:39,913 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:16:39,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2022-12-13 14:16:42,582 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:16:42,736 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:16:42,736 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2022-12-13 14:16:42,741 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/data/9a9a8bf83/4f0c0740f37a42ba86e83302e97f771e/FLAG9989552d1 [2022-12-13 14:16:42,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/data/9a9a8bf83/4f0c0740f37a42ba86e83302e97f771e [2022-12-13 14:16:42,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:16:42,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:16:42,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:16:42,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:16:42,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:16:42,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5747fd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42, skipping insertion in model container [2022-12-13 14:16:42,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:16:42,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:16:42,881 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_2fc490b9-473c-410b-8e2d-28dd170341fd/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2022-12-13 14:16:42,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:16:42,907 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:16:42,916 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_2fc490b9-473c-410b-8e2d-28dd170341fd/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2022-12-13 14:16:42,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:16:42,935 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:16:42,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42 WrapperNode [2022-12-13 14:16:42,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:16:42,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:16:42,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:16:42,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:16:42,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,961 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-12-13 14:16:42,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:16:42,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:16:42,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:16:42,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:16:42,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,976 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:16:42,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:16:42,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:16:42,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:16:42,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (1/1) ... [2022-12-13 14:16:42,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:16:42,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:43,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:16:43,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:16:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:16:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 14:16:43,034 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 14:16:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:16:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:16:43,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:16:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 14:16:43,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 14:16:43,086 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:16:43,088 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:16:43,232 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:16:43,236 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:16:43,236 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 14:16:43,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:16:43 BoogieIcfgContainer [2022-12-13 14:16:43,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:16:43,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:16:43,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:16:43,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:16:43,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:16:42" (1/3) ... [2022-12-13 14:16:43,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2825f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:16:43, skipping insertion in model container [2022-12-13 14:16:43,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:16:42" (2/3) ... [2022-12-13 14:16:43,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2825f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:16:43, skipping insertion in model container [2022-12-13 14:16:43,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:16:43" (3/3) ... [2022-12-13 14:16:43,244 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.c [2022-12-13 14:16:43,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:16:43,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:16:43,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:16:43,296 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;@991530d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:16:43,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:16:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-13 14:16:43,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 14:16:43,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:43,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:43,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:16:43,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:43,310 INFO L85 PathProgramCache]: Analyzing trace with hash -645822239, now seen corresponding path program 1 times [2022-12-13 14:16:43,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:43,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958783799] [2022-12-13 14:16:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:43,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:43,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:43,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958783799] [2022-12-13 14:16:43,401 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:16:43,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553492461] [2022-12-13 14:16:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:43,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:43,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:43,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:43,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:16:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:43,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 14:16:43,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:16:43,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:16:43,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553492461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:43,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:43,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:16:43,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89316593] [2022-12-13 14:16:43,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:43,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:16:43,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:16:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:16:43,523 INFO L87 Difference]: Start difference. First operand has 33 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:16:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:43,543 INFO L93 Difference]: Finished difference Result 63 states and 107 transitions. [2022-12-13 14:16:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:16:43,544 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-12-13 14:16:43,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:43,550 INFO L225 Difference]: With dead ends: 63 [2022-12-13 14:16:43,550 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 14:16:43,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:16:43,555 INFO L413 NwaCegarLoop]: 44 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, 44 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 [2022-12-13 14:16:43,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:16:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 14:16:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 14:16:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 14:16:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2022-12-13 14:16:43,582 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 19 [2022-12-13 14:16:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:43,583 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2022-12-13 14:16:43,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:16:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2022-12-13 14:16:43,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 14:16:43,584 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:43,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:43,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:16:43,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:43,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:16:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1757085840, now seen corresponding path program 1 times [2022-12-13 14:16:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:43,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558227213] [2022-12-13 14:16:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:43,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:44,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:16:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 14:16:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:16:44,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:44,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558227213] [2022-12-13 14:16:44,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558227213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:16:44,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:16:44,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:16:44,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043531629] [2022-12-13 14:16:44,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:16:44,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:16:44,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:44,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:16:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:16:44,228 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 14:16:46,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:16:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:50,277 INFO L93 Difference]: Finished difference Result 64 states and 94 transitions. [2022-12-13 14:16:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:16:50,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-12-13 14:16:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:50,279 INFO L225 Difference]: With dead ends: 64 [2022-12-13 14:16:50,279 INFO L226 Difference]: Without dead ends: 46 [2022-12-13 14:16:50,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:16:50,280 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:16:50,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 157 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-12-13 14:16:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-13 14:16:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-12-13 14:16:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 14:16:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2022-12-13 14:16:50,291 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 20 [2022-12-13 14:16:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:50,292 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2022-12-13 14:16:50,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 14:16:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2022-12-13 14:16:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 14:16:50,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:50,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:50,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:16:50,293 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:16:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:50,294 INFO L85 PathProgramCache]: Analyzing trace with hash -332038773, now seen corresponding path program 1 times [2022-12-13 14:16:50,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:16:50,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651684143] [2022-12-13 14:16:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:50,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:16:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:16:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 14:16:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:16:50,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:16:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651684143] [2022-12-13 14:16:50,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651684143] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:16:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708766239] [2022-12-13 14:16:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:50,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:16:50,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:16:50,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:16:50,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:16:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:50,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 14:16:50,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:16:50,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:16:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:16:50,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708766239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:16:50,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:16:50,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-13 14:16:50,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128547648] [2022-12-13 14:16:50,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:16:50,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 14:16:50,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:16:50,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 14:16:50,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:16:50,829 INFO L87 Difference]: Start difference. First operand 43 states and 60 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 14:16:57,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:16:59,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:02,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:05,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:08,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:08,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:17:08,309 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2022-12-13 14:17:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 14:17:08,310 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-12-13 14:17:08,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:17:08,311 INFO L225 Difference]: With dead ends: 124 [2022-12-13 14:17:08,311 INFO L226 Difference]: Without dead ends: 102 [2022-12-13 14:17:08,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-12-13 14:17:08,313 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 42 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:17:08,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 368 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 430 Invalid, 1 Unknown, 0 Unchecked, 17.3s Time] [2022-12-13 14:17:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-12-13 14:17:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 63. [2022-12-13 14:17:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 14:17:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2022-12-13 14:17:08,328 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 22 [2022-12-13 14:17:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:17:08,328 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2022-12-13 14:17:08,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 14:17:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2022-12-13 14:17:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 14:17:08,329 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:17:08,329 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:17:08,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:17:08,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:17:08,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:17:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:17:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1041809680, now seen corresponding path program 1 times [2022-12-13 14:17:08,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:17:08,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061875451] [2022-12-13 14:17:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:17:08,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:17:08,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:17:08,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430839101] [2022-12-13 14:17:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:17:08,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:17:08,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:17:08,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:17:08,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:17:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:17:08,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:17:08,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:17:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:17:08,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:17:18,009 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) (not (= (mod (* |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296))))) is different from false [2022-12-13 14:17:20,012 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) (not (= (mod (* |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296))))) is different from true [2022-12-13 14:17:20,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:17:20,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061875451] [2022-12-13 14:17:20,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:17:20,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430839101] [2022-12-13 14:17:20,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430839101] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:17:20,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:17:20,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-12-13 14:17:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395984554] [2022-12-13 14:17:20,014 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 14:17:20,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:17:20,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:17:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:17:20,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=68, Unknown=2, NotChecked=16, Total=110 [2022-12-13 14:17:20,015 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:17:23,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:17:25,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:17:27,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:17:29,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:17:31,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:17:33,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:35,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:38,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:17:40,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:42,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:17:45,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:47,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:49,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:17:50,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:17:50,085 INFO L93 Difference]: Finished difference Result 80 states and 109 transitions. [2022-12-13 14:17:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:17:50,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-12-13 14:17:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:17:50,088 INFO L225 Difference]: With dead ends: 80 [2022-12-13 14:17:50,088 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 14:17:50,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=37, Invalid=97, Unknown=2, NotChecked=20, Total=156 [2022-12-13 14:17:50,088 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:17:50,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 122 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 13 Unknown, 0 Unchecked, 30.0s Time] [2022-12-13 14:17:50,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 14:17:50,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-12-13 14:17:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 31 states have internal predecessors, (34), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 14:17:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 82 transitions. [2022-12-13 14:17:50,098 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 82 transitions. Word has length 30 [2022-12-13 14:17:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:17:50,098 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 82 transitions. [2022-12-13 14:17:50,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:17:50,098 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 82 transitions. [2022-12-13 14:17:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 14:17:50,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:17:50,098 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:17:50,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:17:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:17:50,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:17:50,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:17:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1015454531, now seen corresponding path program 1 times [2022-12-13 14:17:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:17:50,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139701120] [2022-12-13 14:17:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:17:50,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:17:50,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:17:50,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926564548] [2022-12-13 14:17:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:17:50,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:17:50,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:17:50,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:17:50,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:17:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:17:50,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:17:50,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:17:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:17:50,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:17:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:17:50,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:17:50,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139701120] [2022-12-13 14:17:50,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:17:50,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926564548] [2022-12-13 14:17:50,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926564548] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:17:50,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:17:50,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 14:17:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62915741] [2022-12-13 14:17:50,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:17:50,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 14:17:50,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:17:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 14:17:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:17:50,491 INFO L87 Difference]: Start difference. First operand 57 states and 82 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:17:53,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:17:55,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:17:57,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:18:01,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:18:05,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:18:09,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:18:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:18:09,630 INFO L93 Difference]: Finished difference Result 81 states and 114 transitions. [2022-12-13 14:18:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:18:09,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 29 [2022-12-13 14:18:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:18:09,632 INFO L225 Difference]: With dead ends: 81 [2022-12-13 14:18:09,632 INFO L226 Difference]: Without dead ends: 55 [2022-12-13 14:18:09,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:18:09,632 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 27 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:18:09,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 129 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 129 Invalid, 5 Unknown, 0 Unchecked, 19.1s Time] [2022-12-13 14:18:09,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-13 14:18:09,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2022-12-13 14:18:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 14:18:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 75 transitions. [2022-12-13 14:18:09,641 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 75 transitions. Word has length 29 [2022-12-13 14:18:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:18:09,642 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 75 transitions. [2022-12-13 14:18:09,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:18:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 75 transitions. [2022-12-13 14:18:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 14:18:09,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:18:09,642 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:18:09,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:18:09,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:18:09,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:18:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:18:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1797429611, now seen corresponding path program 1 times [2022-12-13 14:18:09,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:18:09,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287623239] [2022-12-13 14:18:09,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:18:09,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:18:09,849 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:18:09,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293071391] [2022-12-13 14:18:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:18:09,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:18:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:18:09,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:18:09,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:18:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:18:09,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 14:18:09,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:18:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 14:18:10,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:18:12,811 WARN L859 $PredicateComparison]: unable to prove that (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) is different from true [2022-12-13 14:18:17,414 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) 4294967296) (mod (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) 4294967296))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 12) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1| 4294967284) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296) 0))) is different from false [2022-12-13 14:18:19,418 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) 4294967296) (mod (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) 4294967296))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 12) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1| 4294967284) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296) 0))) is different from true [2022-12-13 14:18:19,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:18:19,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287623239] [2022-12-13 14:18:19,419 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:18:19,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293071391] [2022-12-13 14:18:19,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293071391] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:18:19,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:18:19,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-12-13 14:18:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424455530] [2022-12-13 14:18:19,419 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 14:18:19,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:18:19,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:18:19,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:18:19,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=55, Unknown=3, NotChecked=30, Total=110 [2022-12-13 14:18:19,420 INFO L87 Difference]: Start difference. First operand 53 states and 75 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:18:21,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:18:23,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:18:25,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:18:27,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:18:29,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:18:32,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:18:33,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:18:33,293 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2022-12-13 14:18:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:18:33,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-12-13 14:18:33,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:18:33,294 INFO L225 Difference]: With dead ends: 63 [2022-12-13 14:18:33,294 INFO L226 Difference]: Without dead ends: 61 [2022-12-13 14:18:33,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=35, Invalid=80, Unknown=3, NotChecked=38, Total=156 [2022-12-13 14:18:33,295 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:18:33,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 100 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 6 Unknown, 0 Unchecked, 13.8s Time] [2022-12-13 14:18:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-13 14:18:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-12-13 14:18:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 33 states have internal predecessors, (35), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 14:18:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2022-12-13 14:18:33,308 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 32 [2022-12-13 14:18:33,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:18:33,308 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2022-12-13 14:18:33,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:18:33,308 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2022-12-13 14:18:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 14:18:33,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:18:33,310 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:18:33,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:18:33,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 14:18:33,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:18:33,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:18:33,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1526883210, now seen corresponding path program 1 times [2022-12-13 14:18:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:18:33,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111078266] [2022-12-13 14:18:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:18:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:18:33,547 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:18:33,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720466022] [2022-12-13 14:18:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:18:33,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:18:33,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:18:33,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:18:33,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:18:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:18:33,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 14:18:33,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:18:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-13 14:18:34,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:18:43,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:18:43,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111078266] [2022-12-13 14:18:43,796 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:18:43,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720466022] [2022-12-13 14:18:43,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720466022] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:18:43,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:18:43,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-12-13 14:18:43,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009091360] [2022-12-13 14:18:43,796 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 14:18:43,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:18:43,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:18:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:18:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=291, Unknown=2, NotChecked=0, Total=342 [2022-12-13 14:18:43,798 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:18:48,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:18:50,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:18:52,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:18:56,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:18:58,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:19:00,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:19:03,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:19:05,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:19:07,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:19:08,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:19:11,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:19:13,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:19:13,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:19:13,134 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2022-12-13 14:19:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:19:13,134 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 55 [2022-12-13 14:19:13,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:19:13,135 INFO L225 Difference]: With dead ends: 88 [2022-12-13 14:19:13,135 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 14:19:13,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=77, Invalid=473, Unknown=2, NotChecked=0, Total=552 [2022-12-13 14:19:13,136 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 32 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:19:13,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 386 Invalid, 9 Unknown, 0 Unchecked, 29.2s Time] [2022-12-13 14:19:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 14:19:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2022-12-13 14:19:13,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 14:19:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2022-12-13 14:19:13,143 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 55 [2022-12-13 14:19:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:19:13,143 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2022-12-13 14:19:13,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:19:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2022-12-13 14:19:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 14:19:13,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:19:13,144 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:19:13,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:19:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:19:13,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:19:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:19:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash 657582233, now seen corresponding path program 2 times [2022-12-13 14:19:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:19:13,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243842227] [2022-12-13 14:19:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:19:13,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:19:13,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:19:13,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388705031] [2022-12-13 14:19:13,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:19:13,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:19:13,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:19:13,382 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:19:13,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:19:13,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:19:13,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:19:13,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 14:19:13,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:19:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 13 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 14:19:13,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:20:06,959 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:20:26,786 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:20:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 13 proven. 21 refuted. 3 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-13 14:20:32,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:20:32,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243842227] [2022-12-13 14:20:32,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:20:32,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388705031] [2022-12-13 14:20:32,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388705031] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:20:32,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:20:32,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2022-12-13 14:20:32,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884518656] [2022-12-13 14:20:32,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:20:32,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 14:20:32,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:20:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 14:20:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=341, Unknown=7, NotChecked=0, Total=420 [2022-12-13 14:20:32,586 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 18 states have internal predecessors, (39), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-13 14:20:35,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:20:37,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:20:38,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:20:49,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:20:51,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:20:54,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:20:56,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:20:58,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:01,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:06,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:14,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:15,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:19,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:22,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:24,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:27,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:30,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:32,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:34,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:36,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:38,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:40,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:43,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:45,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:48,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:49,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:51,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:53,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:21:59,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:21:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:21:59,566 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2022-12-13 14:21:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:21:59,567 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 18 states have internal predecessors, (39), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) Word has length 60 [2022-12-13 14:21:59,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:21:59,567 INFO L225 Difference]: With dead ends: 63 [2022-12-13 14:21:59,567 INFO L226 Difference]: Without dead ends: 61 [2022-12-13 14:21:59,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 59.2s TimeCoverageRelationStatistics Valid=91, Invalid=453, Unknown=8, NotChecked=0, Total=552 [2022-12-13 14:21:59,569 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 20 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 18 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:21:59,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 129 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 437 Invalid, 18 Unknown, 0 Unchecked, 77.6s Time] [2022-12-13 14:21:59,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-13 14:21:59,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-12-13 14:21:59,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 14:21:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2022-12-13 14:21:59,581 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 60 [2022-12-13 14:21:59,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:21:59,581 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2022-12-13 14:21:59,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 18 states have internal predecessors, (39), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-13 14:21:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2022-12-13 14:21:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 14:21:59,582 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:21:59,582 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:59,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 14:21:59,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:21:59,784 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:21:59,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:59,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1365029718, now seen corresponding path program 3 times [2022-12-13 14:21:59,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:59,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719538546] [2022-12-13 14:21:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:59,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:59,810 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:21:59,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965087948] [2022-12-13 14:21:59,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:21:59,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:21:59,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:21:59,811 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:21:59,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:22:00,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 14:22:00,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:22:00,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 14:22:00,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:22:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-12-13 14:22:00,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:22:07,079 WARN L859 $PredicateComparison]: unable to prove that (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 16 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| 15 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) is different from true [2022-12-13 14:22:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-12-13 14:22:52,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:52,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719538546] [2022-12-13 14:22:52,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:22:52,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965087948] [2022-12-13 14:22:52,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965087948] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:22:52,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:22:52,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-12-13 14:22:52,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018830459] [2022-12-13 14:22:52,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:22:52,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 14:22:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:22:52,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 14:22:52,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=159, Unknown=5, NotChecked=26, Total=240 [2022-12-13 14:22:52,997 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 14:22:54,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:22:56,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:22:58,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:02,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:07,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:09,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:11,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:13,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:15,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:22,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:25,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:27,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:32,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:35,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:37,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:39,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:41,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:43,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:45,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:23:48,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:24:02,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 14.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:24:06,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:24:08,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:24:11,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:24:14,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:24:16,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:24:18,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 14:24:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:24:20,404 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-12-13 14:24:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:24:20,405 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 65 [2022-12-13 14:24:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:24:20,405 INFO L225 Difference]: With dead ends: 59 [2022-12-13 14:24:20,405 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 14:24:20,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=64, Invalid=205, Unknown=7, NotChecked=30, Total=306 [2022-12-13 14:24:20,407 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 13 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 26 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 81.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:24:20,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 124 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 252 Invalid, 23 Unknown, 51 Unchecked, 81.4s Time] [2022-12-13 14:24:20,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 14:24:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 14:24:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:24:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 14:24:20,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2022-12-13 14:24:20,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:24:20,408 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 14:24:20,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-12-13 14:24:20,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 14:24:20,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 14:24:20,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 14:24:20,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 14:24:20,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 14:24:20,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 14:24:27,016 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2022-12-13 14:24:27,017 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-12-13 14:24:27,017 INFO L895 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 2) [2022-12-13 14:24:27,017 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2022-12-13 14:24:27,017 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 38 56) the Hoare annotation is: (let ((.cse3 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse1 (<= .cse3 2)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 (<= 1 .cse3) (= |ULTIMATE.start_main_~q~0#1| 4) .cse4) (and .cse0 (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) .cse2 .cse5 .cse4) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse1 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse5 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-12-13 14:24:27,017 INFO L899 garLoopResultBuilder]: For program point L44(lines 38 56) no Hoare annotation was computed. [2022-12-13 14:24:27,017 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 19 61) the Hoare annotation is: true [2022-12-13 14:24:27,017 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-12-13 14:24:27,017 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 14:24:27,017 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 14:24:27,018 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 0) .cse0 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (and (<= 1 (mod (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 4294967296)) (= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 2) .cse0 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))) [2022-12-13 14:24:27,018 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-12-13 14:24:27,018 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-12-13 14:24:27,018 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 14:24:27,018 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 0) .cse0 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (and (<= 1 (mod (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 4294967296)) (= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 2) .cse0 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))) [2022-12-13 14:24:27,018 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-12-13 14:24:27,018 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 14:24:27,018 INFO L895 garLoopResultBuilder]: At program point L38-1(lines 38 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) .cse0 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (let ((.cse1 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse1 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (<= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 2) (= |ULTIMATE.start_main_~n~0#1| .cse1) .cse0 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|))))) [2022-12-13 14:24:27,018 INFO L895 garLoopResultBuilder]: At program point L30-2(lines 30 35) the Hoare annotation is: (let ((.cse3 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (<= .cse3 2)) (.cse2 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 .cse1 .cse2 (<= 1 .cse3) (= |ULTIMATE.start_main_~q~0#1| 4) .cse4) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 1) .cse4)))) [2022-12-13 14:24:27,019 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2022-12-13 14:24:27,019 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-12-13 14:24:27,019 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse3 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse1 (<= .cse3 2)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 (<= 1 .cse3) (= |ULTIMATE.start_main_~q~0#1| 4) .cse4) (and .cse0 (<= (+ (* (div |ULTIMATE.start_main_~q~0#1| 4294967296) 4294967296) |ULTIMATE.start_main_~r~0#1| (* (div (+ |ULTIMATE.start_main_~q~0#1| (* 2 |ULTIMATE.start_main_~p~0#1|)) 4294967296) 4294967296) 1) (+ |ULTIMATE.start_main_~q~0#1| (* (div |ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296))) .cse2 .cse5 .cse4) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse1 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse5 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-12-13 14:24:27,019 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= .cse5 2)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 (<= 1 .cse5) (= |ULTIMATE.start_main_~q~0#1| 4) .cse3) (let ((.cse6 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (<= 1 (mod .cse6 4294967296)) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) .cse4 (= |ULTIMATE.start_main_~n~0#1| .cse6) .cse2 (= |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1|)))))) [2022-12-13 14:24:27,019 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2022-12-13 14:24:27,019 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-12-13 14:24:27,019 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2022-12-13 14:24:27,019 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-12-13 14:24:27,019 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-12-13 14:24:27,019 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-12-13 14:24:27,019 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-12-13 14:24:27,020 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-12-13 14:24:27,020 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2022-12-13 14:24:27,020 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-12-13 14:24:27,022 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2022-12-13 14:24:27,023 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:24:27,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:24:27 BoogieIcfgContainer [2022-12-13 14:24:27,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:24:27,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:24:27,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:24:27,033 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:24:27,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:16:43" (3/4) ... [2022-12-13 14:24:27,035 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:24:27,040 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-13 14:24:27,040 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-13 14:24:27,042 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-13 14:24:27,042 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 14:24:27,042 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 14:24:27,042 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 14:24:27,063 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:24:27,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:24:27,064 INFO L158 Benchmark]: Toolchain (without parser) took 464310.03ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 97.2MB in the beginning and 84.6MB in the end (delta: 12.5MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2022-12-13 14:24:27,064 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 102.5MB in the beginning and 102.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:24:27,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.96ms. Allocated memory is still 127.9MB. Free memory was 96.9MB in the beginning and 85.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 14:24:27,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.51ms. Allocated memory is still 127.9MB. Free memory was 85.5MB in the beginning and 84.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:24:27,065 INFO L158 Benchmark]: Boogie Preprocessor took 16.00ms. Allocated memory is still 127.9MB. Free memory was 83.6MB in the beginning and 82.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:24:27,065 INFO L158 Benchmark]: RCFGBuilder took 259.12ms. Allocated memory is still 127.9MB. Free memory was 82.4MB in the beginning and 68.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 14:24:27,065 INFO L158 Benchmark]: TraceAbstraction took 463793.41ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 68.1MB in the beginning and 87.8MB in the end (delta: -19.7MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. [2022-12-13 14:24:27,065 INFO L158 Benchmark]: Witness Printer took 30.62ms. Allocated memory is still 155.2MB. Free memory was 87.8MB in the beginning and 84.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 14:24:27,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 102.5MB in the beginning and 102.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.96ms. Allocated memory is still 127.9MB. Free memory was 96.9MB in the beginning and 85.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.51ms. Allocated memory is still 127.9MB. Free memory was 85.5MB in the beginning and 84.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.00ms. Allocated memory is still 127.9MB. Free memory was 83.6MB in the beginning and 82.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 259.12ms. Allocated memory is still 127.9MB. Free memory was 82.4MB in the beginning and 68.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 463793.41ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 68.1MB in the beginning and 87.8MB in the end (delta: -19.7MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. * Witness Printer took 30.62ms. Allocated memory is still 155.2MB. Free memory was 87.8MB in the beginning and 84.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 463.7s, OverallIterations: 9, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 290.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 mSolverCounterUnknown, 195 SdHoareTripleChecker+Valid, 274.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 1282 SdHoareTripleChecker+Invalid, 273.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 51 IncrementalHoareTripleChecker+Unchecked, 939 mSDsCounter, 280 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2016 IncrementalHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 280 mSolverCounterUnsat, 343 mSDtfsCounter, 2016 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 428 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 112.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, InterpolantAutomatonStates: 85, 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, 9 MinimizatonAttempts, 48 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 96 PreInvPairs, 129 NumberOfFragments, 666 HoareAnnotationTreeSize, 96 FomulaSimplifications, 110 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 16 FomulaSimplificationsInter, 1200 FormulaSimplificationTreeSizeReductionInter, 6.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 164.1s InterpolantComputationTime, 373 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 516 ConstructedInterpolants, 0 QuantifiedInterpolants, 4734 SizeOfPredicates, 18 NumberOfNonLiveVariables, 758 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 554/646 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((p == 0 && n % 4294967296 <= 2) && h == 0) && 1 <= n % 4294967296) && q == 4) && n == r) || ((((p == 0 && n % 4294967296 <= 2) && h == 0) && q == 1) && n == r) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((p == 0 && n % 4294967296 <= 2) && h == 0) && 1 <= n % 4294967296) && q == 4) && n == r) || ((((p == 0 && q / 4294967296 * 4294967296 + r + (q + 2 * p) / 4294967296 * 4294967296 + 1 <= q + r / 4294967296 * 4294967296) && h == 0) && q == 1) && n == r)) || (((((1 <= (q + r) % 4294967296 && p == q) && n % 4294967296 <= 2) && n == q + r) && q == 1) && h == q) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-13 14:24:27,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc490b9-473c-410b-8e2d-28dd170341fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE