./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro --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 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 --- 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-8393723 [2022-11-18 19:53:01,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:53:01,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:53:01,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:53:01,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:53:01,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:53:01,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:53:01,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:53:01,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:53:01,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:53:01,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:53:01,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:53:01,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:53:01,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:53:01,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:53:01,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:53:01,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:53:01,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:53:01,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:53:01,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:53:01,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:53:01,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:53:01,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:53:01,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:53:01,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:53:01,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:53:01,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:53:01,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:53:01,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:53:01,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:53:01,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:53:01,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:53:01,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:53:01,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:53:01,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:53:01,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:53:01,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:53:01,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:53:01,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:53:01,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:53:01,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:53:01,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:53:01,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:53:01,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:53:01,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:53:01,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:53:01,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:53:01,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:53:01,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:53:01,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:53:01,726 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:53:01,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:53:01,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:53:01,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:53:01,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:53:01,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:53:01,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:53:01,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:53:01,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:53:01,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:53:01,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:53:01,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:53:01,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:53:01,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:53:01,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:53:01,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:53:01,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:01,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:53:01,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:53:01,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:53:01,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:53:01,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:53:01,732 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:53:01,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:53:01,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:53:01,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 [2022-11-18 19:53:01,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:53:01,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:53:01,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:53:01,995 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:53:01,996 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:53:01,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2022-11-18 19:53:02,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/data/27d697c49/440c64923bd4493c98dd22bc8d797e12/FLAG992c92306 [2022-11-18 19:53:02,608 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:53:02,608 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2022-11-18 19:53:02,615 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/data/27d697c49/440c64923bd4493c98dd22bc8d797e12/FLAG992c92306 [2022-11-18 19:53:03,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/data/27d697c49/440c64923bd4493c98dd22bc8d797e12 [2022-11-18 19:53:03,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:53:03,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:53:03,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:03,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:53:03,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:53:03,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373751de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03, skipping insertion in model container [2022-11-18 19:53:03,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:53:03,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:53:03,187 WARN L234 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_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2022-11-18 19:53:03,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:03,208 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:53:03,240 WARN L234 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_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2022-11-18 19:53:03,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:03,258 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:53:03,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03 WrapperNode [2022-11-18 19:53:03,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:03,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:03,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:53:03,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:53:03,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,298 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-11-18 19:53:03,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:03,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:53:03,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:53:03,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:53:03,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,335 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:53:03,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:53:03,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:53:03,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:53:03,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (1/1) ... [2022-11-18 19:53:03,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:03,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:03,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:53:03,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:53:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:53:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:53:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:53:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:53:03,476 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:53:03,478 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:53:03,589 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:53:03,595 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:53:03,595 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:53:03,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:03 BoogieIcfgContainer [2022-11-18 19:53:03,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:53:03,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:53:03,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:53:03,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:53:03,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:53:03" (1/3) ... [2022-11-18 19:53:03,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc19622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:03, skipping insertion in model container [2022-11-18 19:53:03,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:03" (2/3) ... [2022-11-18 19:53:03,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc19622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:03, skipping insertion in model container [2022-11-18 19:53:03,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:03" (3/3) ... [2022-11-18 19:53:03,606 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond_1-2.c [2022-11-18 19:53:03,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:53:03,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:53:03,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:53:03,679 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;@21a25cff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:53:03,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:53:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:53:03,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:03,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:53:03,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2022-11-18 19:53:03,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:03,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268804231] [2022-11-18 19:53:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:03,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:03,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268804231] [2022-11-18 19:53:03,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268804231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:03,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:03,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:53:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808944018] [2022-11-18 19:53:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:53:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:53:03,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:53:03,882 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:03,895 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-11-18 19:53:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:53:03,898 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:53:03,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:03,906 INFO L225 Difference]: With dead ends: 20 [2022-11-18 19:53:03,906 INFO L226 Difference]: Without dead ends: 8 [2022-11-18 19:53:03,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:53:03,913 INFO L413 NwaCegarLoop]: 13 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, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:03,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:53:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-18 19:53:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-18 19:53:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-11-18 19:53:03,946 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-11-18 19:53:03,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:03,946 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-18 19:53:03,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-11-18 19:53:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:53:03,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:03,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:53:03,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:53:03,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2022-11-18 19:53:03,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:03,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347659735] [2022-11-18 19:53:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:03,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:04,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:04,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347659735] [2022-11-18 19:53:04,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347659735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:04,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:04,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:04,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268077312] [2022-11-18 19:53:04,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:04,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:04,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:04,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:04,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:04,176 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:04,217 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2022-11-18 19:53:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:04,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:53:04,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:04,220 INFO L225 Difference]: With dead ends: 14 [2022-11-18 19:53:04,220 INFO L226 Difference]: Without dead ends: 10 [2022-11-18 19:53:04,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:04,222 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:04,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:53:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-18 19:53:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-11-18 19:53:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-18 19:53:04,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-11-18 19:53:04,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:04,227 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-18 19:53:04,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-18 19:53:04,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:53:04,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:04,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:04,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:53:04,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:04,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:04,231 INFO L85 PathProgramCache]: Analyzing trace with hash 297538966, now seen corresponding path program 1 times [2022-11-18 19:53:04,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:04,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699982526] [2022-11-18 19:53:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:04,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:04,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:04,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699982526] [2022-11-18 19:53:04,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699982526] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:04,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892445250] [2022-11-18 19:53:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:04,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:04,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:04,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:04,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:53:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:04,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:53:04,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:04,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:04,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892445250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:04,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:04,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-18 19:53:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433993818] [2022-11-18 19:53:04,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:04,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:53:04,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:04,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:53:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:53:04,623 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:04,720 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2022-11-18 19:53:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:04,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:53:04,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:04,721 INFO L225 Difference]: With dead ends: 21 [2022-11-18 19:53:04,721 INFO L226 Difference]: Without dead ends: 17 [2022-11-18 19:53:04,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:04,723 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:04,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:53:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-18 19:53:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-18 19:53:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-18 19:53:04,729 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2022-11-18 19:53:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:04,729 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-18 19:53:04,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-18 19:53:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:53:04,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:04,730 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:04,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:04,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:04,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:04,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:04,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1979276421, now seen corresponding path program 2 times [2022-11-18 19:53:04,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:04,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351572681] [2022-11-18 19:53:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:04,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:05,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:05,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351572681] [2022-11-18 19:53:05,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351572681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:05,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172599862] [2022-11-18 19:53:05,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:05,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:05,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:05,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:05,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:53:05,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:05,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:05,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:53:05,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:05,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:05,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172599862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:05,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:05,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 19:53:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566935618] [2022-11-18 19:53:05,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:05,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:53:05,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:53:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:53:05,509 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:06,119 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2022-11-18 19:53:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:53:06,121 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:53:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:06,121 INFO L225 Difference]: With dead ends: 42 [2022-11-18 19:53:06,122 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 19:53:06,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:53:06,123 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:06,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 30 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:53:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 19:53:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2022-11-18 19:53:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-11-18 19:53:06,141 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2022-11-18 19:53:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:06,141 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-11-18 19:53:06,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:06,142 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-11-18 19:53:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 19:53:06,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:06,143 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:06,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:53:06,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:06,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1371031502, now seen corresponding path program 1 times [2022-11-18 19:53:06,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:06,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411470011] [2022-11-18 19:53:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:53:06,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:06,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411470011] [2022-11-18 19:53:06,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411470011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:06,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:06,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922054962] [2022-11-18 19:53:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:06,409 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:06,439 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2022-11-18 19:53:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 19:53:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:06,440 INFO L225 Difference]: With dead ends: 59 [2022-11-18 19:53:06,441 INFO L226 Difference]: Without dead ends: 44 [2022-11-18 19:53:06,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:06,442 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:06,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:53:06,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-18 19:53:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-11-18 19:53:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-11-18 19:53:06,459 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 20 [2022-11-18 19:53:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:06,459 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-11-18 19:53:06,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-11-18 19:53:06,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 19:53:06,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:06,461 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:06,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:53:06,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:06,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:06,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1632628134, now seen corresponding path program 1 times [2022-11-18 19:53:06,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:06,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382189380] [2022-11-18 19:53:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:06,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:06,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:06,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382189380] [2022-11-18 19:53:06,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382189380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:06,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268072451] [2022-11-18 19:53:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:06,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:06,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:53:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:06,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:53:06,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:06,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:07,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268072451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:07,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:07,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-11-18 19:53:07,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347896715] [2022-11-18 19:53:07,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:07,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:53:07,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:07,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:53:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:53:07,161 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:08,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:08,694 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2022-11-18 19:53:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:53:08,695 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 19:53:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:08,696 INFO L225 Difference]: With dead ends: 119 [2022-11-18 19:53:08,697 INFO L226 Difference]: Without dead ends: 115 [2022-11-18 19:53:08,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:53:08,698 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:08,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 33 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:53:08,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-18 19:53:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 58. [2022-11-18 19:53:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-11-18 19:53:08,746 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 20 [2022-11-18 19:53:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:08,747 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-11-18 19:53:08,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-11-18 19:53:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 19:53:08,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:08,748 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:08,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:08,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:53:08,949 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:08,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:08,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1066218333, now seen corresponding path program 3 times [2022-11-18 19:53:08,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:08,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397269583] [2022-11-18 19:53:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:08,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:09,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:09,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397269583] [2022-11-18 19:53:09,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397269583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:09,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843137262] [2022-11-18 19:53:09,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:53:09,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:09,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:09,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:09,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:53:09,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-18 19:53:09,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:09,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:53:09,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:09,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:09,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843137262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:09,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:09,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-18 19:53:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510913612] [2022-11-18 19:53:09,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:53:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:53:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:53:09,953 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:14,703 INFO L93 Difference]: Finished difference Result 201 states and 247 transitions. [2022-11-18 19:53:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:53:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 19:53:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:14,705 INFO L225 Difference]: With dead ends: 201 [2022-11-18 19:53:14,705 INFO L226 Difference]: Without dead ends: 197 [2022-11-18 19:53:14,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:53:14,707 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:14,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 45 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:53:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-18 19:53:14,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 82. [2022-11-18 19:53:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 81 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2022-11-18 19:53:14,734 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 26 [2022-11-18 19:53:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:14,735 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2022-11-18 19:53:14,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2022-11-18 19:53:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:53:14,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:14,737 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:14,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:14,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:53:14,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash -477339582, now seen corresponding path program 2 times [2022-11-18 19:53:14,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:14,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781197126] [2022-11-18 19:53:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:14,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-18 19:53:14,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:14,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781197126] [2022-11-18 19:53:14,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781197126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:14,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:14,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:14,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890586967] [2022-11-18 19:53:14,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:14,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:14,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:14,995 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:15,029 INFO L93 Difference]: Finished difference Result 117 states and 139 transitions. [2022-11-18 19:53:15,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:15,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 19:53:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:15,031 INFO L225 Difference]: With dead ends: 117 [2022-11-18 19:53:15,031 INFO L226 Difference]: Without dead ends: 86 [2022-11-18 19:53:15,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:15,032 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:15,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:53:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-18 19:53:15,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2022-11-18 19:53:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2022-11-18 19:53:15,061 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 36 [2022-11-18 19:53:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:15,061 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2022-11-18 19:53:15,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2022-11-18 19:53:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:53:15,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:15,063 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:15,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:53:15,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1804897185, now seen corresponding path program 2 times [2022-11-18 19:53:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:15,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256359165] [2022-11-18 19:53:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:15,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:15,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256359165] [2022-11-18 19:53:15,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256359165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:15,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296976815] [2022-11-18 19:53:15,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:15,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:15,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:15,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:15,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:53:15,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:15,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:15,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 19:53:15,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:15,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:16,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296976815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:16,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:16,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2022-11-18 19:53:16,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027121930] [2022-11-18 19:53:16,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:16,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:53:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:16,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:53:16,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=938, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:53:16,598 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:36,671 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2022-11-18 19:53:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 19:53:36,672 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-18 19:53:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:36,673 INFO L225 Difference]: With dead ends: 122 [2022-11-18 19:53:36,673 INFO L226 Difference]: Without dead ends: 118 [2022-11-18 19:53:36,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=986, Invalid=1770, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 19:53:36,675 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:36,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 66 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:53:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-18 19:53:36,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-11-18 19:53:36,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 117 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2022-11-18 19:53:36,708 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 38 [2022-11-18 19:53:36,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:36,709 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2022-11-18 19:53:36,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2022-11-18 19:53:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 19:53:36,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:36,711 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:36,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:36,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:36,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:36,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1301187105, now seen corresponding path program 4 times [2022-11-18 19:53:36,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:36,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109127518] [2022-11-18 19:53:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:37,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:37,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109127518] [2022-11-18 19:53:37,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109127518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:37,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462012136] [2022-11-18 19:53:37,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:53:37,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:37,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:37,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:53:37,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:53:37,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:37,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-18 19:53:37,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:38,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:39,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462012136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:39,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:39,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-18 19:53:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5827890] [2022-11-18 19:53:39,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:39,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 19:53:39,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:39,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 19:53:39,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=1682, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 19:53:39,433 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:18,183 INFO L93 Difference]: Finished difference Result 170 states and 195 transitions. [2022-11-18 19:55:18,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 19:55:18,185 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-18 19:55:18,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:18,186 INFO L225 Difference]: With dead ends: 170 [2022-11-18 19:55:18,186 INFO L226 Difference]: Without dead ends: 166 [2022-11-18 19:55:18,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 98.4s TimeCoverageRelationStatistics Valid=1748, Invalid=3222, Unknown=0, NotChecked=0, Total=4970 [2022-11-18 19:55:18,189 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:18,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 75 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:55:18,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-18 19:55:18,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-18 19:55:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.018181818181818) internal successors, (168), 165 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2022-11-18 19:55:18,220 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 50 [2022-11-18 19:55:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:18,221 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2022-11-18 19:55:18,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2022-11-18 19:55:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:55:18,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:18,223 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:18,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:18,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:18,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:18,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:18,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2069904727, now seen corresponding path program 3 times [2022-11-18 19:55:18,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:18,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481541327] [2022-11-18 19:55:18,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:18,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:20,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:20,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481541327] [2022-11-18 19:55:20,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481541327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:20,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330220523] [2022-11-18 19:55:20,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:55:20,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:20,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:20,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:20,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d2ebf3-9daa-4a94-a7a8-9805e8018a08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:55:22,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2022-11-18 19:55:22,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:55:22,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-18 19:55:22,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:22,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:31,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:31,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330220523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:31,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:31,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 40] total 76 [2022-11-18 19:55:31,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845748804] [2022-11-18 19:55:31,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:31,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-18 19:55:31,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-18 19:55:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1483, Invalid=4217, Unknown=0, NotChecked=0, Total=5700 [2022-11-18 19:55:31,210 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand has 76 states, 76 states have (on average 1.9473684210526316) internal successors, (148), 76 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:02:20,430 WARN L233 SmtUtils]: Spent 6.24m on a formula simplification that was a NOOP. DAG size: 219 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:02:25,363 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse1 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 99)) (.cse6 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 99)) (.cse3 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 99)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 99)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 99)) (.cse4 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 99)) (.cse8 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) 99)) (.cse24 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 99)) (.cse27 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 99)) (.cse28 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 99)) (.cse22 (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 99)) (.cse9 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 99)) (.cse23 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 99)) (.cse18 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) 99)) (.cse31 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) 99)) (.cse16 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) 99)) (.cse2 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 29) 4294967296) 99)) (.cse14 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 30) 4294967296) 99)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 31) 4294967296) 99)) (.cse25 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 99)) (.cse19 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 99)) (.cse29 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 99)) (.cse13 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 99)) (.cse5 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 99)) (.cse17 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 99)) (.cse26 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 99)) (.cse20 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) 99)) (.cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 99)) (.cse30 (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 99)) (.cse21 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 99)) (.cse10 (< (mod .cse11 4294967296) 99))) (and (or (not .cse0) .cse1) (or .cse2 (not .cse3)) (or (not .cse4) .cse5) (or (not .cse1) .cse6) (or (not .cse6) .cse7) (or (not .cse8) .cse9) (or .cse10 (< (mod (mod .cse11 2) 4294967296) 1)) (or .cse3 (not .cse7)) (or .cse12 (not .cse13)) (or (not .cse14) .cse15) (or .cse16 (not .cse17)) (or (not .cse18) .cse19) (or .cse20 (not .cse21)) (or (not .cse12) .cse4) (or (not .cse22) .cse23) (or .cse24 (not .cse25)) (or .cse8 (not .cse26)) (or (not .cse24) .cse27) (or .cse28 (not .cse27)) (or (not .cse28) .cse29) (or .cse30 (not .cse31)) (or (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 99) (= (mod (mod |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296))) (or .cse22 (not .cse9)) (or (not .cse23) .cse18) (or .cse31 (not .cse16)) (or (not .cse2) .cse14) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 32) 4294967296) 99) (not .cse15)) (or .cse25 (not .cse19)) (or (not .cse29) .cse13) (or (not .cse5) .cse17) (or .cse26 (not .cse20)) (or .cse0 (not .cse30)) (or .cse21 (not .cse10))))) is different from false [2022-11-18 20:07:52,385 WARN L233 SmtUtils]: Spent 4.96m on a formula simplification that was a NOOP. DAG size: 198 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:07:55,139 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 []