./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a --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 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 --- 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-b5237d8 [2022-11-21 16:25:10,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:25:10,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:25:10,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:25:10,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:25:10,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:25:10,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:25:10,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:25:10,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:25:10,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:25:10,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:25:10,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:25:10,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:25:10,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:25:10,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:25:10,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:25:10,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:25:10,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:25:10,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:25:10,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:25:10,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:25:10,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:25:10,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:25:10,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:25:10,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:25:10,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:25:10,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:25:10,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:25:10,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:25:10,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:25:10,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:25:10,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:25:10,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:25:10,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:25:10,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:25:10,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:25:10,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:25:10,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:25:10,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:25:10,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:25:10,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:25:10,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:25:10,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:25:10,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:25:10,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:25:10,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:25:10,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:25:10,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:25:10,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:25:10,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:25:10,264 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:25:10,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:25:10,265 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:25:10,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:25:10,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:25:10,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:25:10,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:25:10,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:25:10,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:25:10,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:25:10,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:25:10,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:25:10,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:25:10,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:25:10,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:25:10,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:25:10,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:25:10,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:25:10,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:25:10,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:25:10,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:25:10,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:25:10,271 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:25:10,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:25:10,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:25:10,272 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_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 [2022-11-21 16:25:10,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:25:10,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:25:10,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:25:10,646 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:25:10,647 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:25:10,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2022-11-21 16:25:14,206 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:25:14,440 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:25:14,441 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2022-11-21 16:25:14,449 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/data/5c6c6a239/303fb07b132c43dabc80a66ec1617470/FLAGa70f26c07 [2022-11-21 16:25:14,472 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/data/5c6c6a239/303fb07b132c43dabc80a66ec1617470 [2022-11-21 16:25:14,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:25:14,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:25:14,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:25:14,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:25:14,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:25:14,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30941d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14, skipping insertion in model container [2022-11-21 16:25:14,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:25:14,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:25:14,754 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c[597,610] [2022-11-21 16:25:14,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:25:14,811 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:25:14,830 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c[597,610] [2022-11-21 16:25:14,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:25:14,868 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:25:14,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14 WrapperNode [2022-11-21 16:25:14,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:25:14,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:25:14,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:25:14,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:25:14,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,905 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-11-21 16:25:14,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:25:14,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:25:14,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:25:14,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:25:14,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:25:14,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:25:14,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:25:14,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:25:14,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (1/1) ... [2022-11-21 16:25:14,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:25:14,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:14,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:25:15,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:25:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:25:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:25:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:25:15,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:25:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-21 16:25:15,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-21 16:25:15,128 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:25:15,129 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:25:15,311 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:25:15,318 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:25:15,318 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:25:15,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:25:15 BoogieIcfgContainer [2022-11-21 16:25:15,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:25:15,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:25:15,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:25:15,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:25:15,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:25:14" (1/3) ... [2022-11-21 16:25:15,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29976124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:25:15, skipping insertion in model container [2022-11-21 16:25:15,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:14" (2/3) ... [2022-11-21 16:25:15,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29976124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:25:15, skipping insertion in model container [2022-11-21 16:25:15,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:25:15" (3/3) ... [2022-11-21 16:25:15,332 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound5.c [2022-11-21 16:25:15,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:25:15,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:25:15,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:25:15,411 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;@2ac68810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:25:15,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:25:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 16:25:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 16:25:15,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:25:15,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:15,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:25:15,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:15,431 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2022-11-21 16:25:15,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:15,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346268124] [2022-11-21 16:25:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:15,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:15,557 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:25:15,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20980338] [2022-11-21 16:25:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:15,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:15,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:15,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:25:15,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:25:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:15,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:25:15,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:25:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:16,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:25:16,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:16,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346268124] [2022-11-21 16:25:16,025 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:25:16,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20980338] [2022-11-21 16:25:16,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20980338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:25:16,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:25:16,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:25:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135255976] [2022-11-21 16:25:16,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:25:16,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:25:16,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:25:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:25:16,088 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:25:16,273 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2022-11-21 16:25:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:25:16,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-21 16:25:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:25:16,287 INFO L225 Difference]: With dead ends: 54 [2022-11-21 16:25:16,287 INFO L226 Difference]: Without dead ends: 25 [2022-11-21 16:25:16,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:25:16,296 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:25:16,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:25:16,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-21 16:25:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-21 16:25:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 16:25:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-21 16:25:16,347 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2022-11-21 16:25:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:25:16,347 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-21 16:25:16,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:25:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-21 16:25:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 16:25:16,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:25:16,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:16,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:25:16,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 16:25:16,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:25:16,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:16,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2022-11-21 16:25:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:16,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557497831] [2022-11-21 16:25:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:16,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:16,590 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:25:16,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880102094] [2022-11-21 16:25:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:16,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:16,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:25:16,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:25:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:16,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 16:25:16,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:25:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:17,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:25:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:17,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:17,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557497831] [2022-11-21 16:25:17,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:25:17,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880102094] [2022-11-21 16:25:17,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880102094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:25:17,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:25:17,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-21 16:25:17,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707115907] [2022-11-21 16:25:17,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:25:17,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:25:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:25:17,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:25:17,553 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 16:25:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:25:18,138 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-11-21 16:25:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:25:18,139 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-21 16:25:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:25:18,140 INFO L225 Difference]: With dead ends: 41 [2022-11-21 16:25:18,141 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 16:25:18,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:25:18,143 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:25:18,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 64 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 16:25:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 16:25:18,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-11-21 16:25:18,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 16:25:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-11-21 16:25:18,154 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2022-11-21 16:25:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:25:18,155 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-11-21 16:25:18,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 16:25:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-11-21 16:25:18,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 16:25:18,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:25:18,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:18,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:25:18,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-21 16:25:18,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:25:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:18,365 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2022-11-21 16:25:18,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:18,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030134727] [2022-11-21 16:25:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:18,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:18,378 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:25:18,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827528524] [2022-11-21 16:25:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:18,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:18,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:25:18,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:25:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:18,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:25:18,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:25:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:18,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:25:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:18,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:18,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030134727] [2022-11-21 16:25:18,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:25:18,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827528524] [2022-11-21 16:25:18,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827528524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:25:18,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:25:18,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-21 16:25:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655208777] [2022-11-21 16:25:18,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:25:18,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:25:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:18,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:25:18,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:25:18,542 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 16:25:18,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:25:18,650 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-11-21 16:25:18,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:25:18,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-11-21 16:25:18,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:25:18,655 INFO L225 Difference]: With dead ends: 73 [2022-11-21 16:25:18,655 INFO L226 Difference]: Without dead ends: 67 [2022-11-21 16:25:18,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:25:18,660 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:25:18,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 106 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:25:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-21 16:25:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2022-11-21 16:25:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-21 16:25:18,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-11-21 16:25:18,697 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2022-11-21 16:25:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:25:18,700 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-11-21 16:25:18,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 16:25:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-11-21 16:25:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:25:18,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:25:18,702 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:18,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:25:18,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:18,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:25:18,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:18,909 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2022-11-21 16:25:18,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:18,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470849255] [2022-11-21 16:25:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:18,925 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:25:18,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014159584] [2022-11-21 16:25:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:18,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:18,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:18,927 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:25:18,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:25:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:19,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-21 16:25:19,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:25:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:25:19,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:25:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:25:19,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:19,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470849255] [2022-11-21 16:25:19,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:25:19,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014159584] [2022-11-21 16:25:19,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014159584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:25:19,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:25:19,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2022-11-21 16:25:19,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65738136] [2022-11-21 16:25:19,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:25:19,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 16:25:19,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:19,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 16:25:19,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-11-21 16:25:19,879 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-21 16:25:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:25:21,104 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-11-21 16:25:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-21 16:25:21,106 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2022-11-21 16:25:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:25:21,107 INFO L225 Difference]: With dead ends: 65 [2022-11-21 16:25:21,108 INFO L226 Difference]: Without dead ends: 57 [2022-11-21 16:25:21,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2022-11-21 16:25:21,110 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 69 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:25:21,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 78 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 16:25:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-21 16:25:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2022-11-21 16:25:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-21 16:25:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-11-21 16:25:21,137 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 25 [2022-11-21 16:25:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:25:21,142 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-11-21 16:25:21,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-21 16:25:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-11-21 16:25:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-21 16:25:21,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:25:21,144 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:21,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:25:21,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:21,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:25:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2022-11-21 16:25:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:21,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237201172] [2022-11-21 16:25:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:21,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:21,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:25:21,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561390475] [2022-11-21 16:25:21,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:21,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:21,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:21,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:25:21,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:25:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:25:21,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:25:21,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:25:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:25:21,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:25:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 16:25:21,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:21,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237201172] [2022-11-21 16:25:21,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:25:21,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561390475] [2022-11-21 16:25:21,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561390475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:25:21,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:25:21,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2022-11-21 16:25:21,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45727838] [2022-11-21 16:25:21,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:25:21,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:25:21,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:25:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:25:21,689 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 16:25:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:25:21,790 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-11-21 16:25:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:25:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2022-11-21 16:25:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:25:21,794 INFO L225 Difference]: With dead ends: 66 [2022-11-21 16:25:21,794 INFO L226 Difference]: Without dead ends: 60 [2022-11-21 16:25:21,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:25:21,798 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:25:21,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 86 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:25:21,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-21 16:25:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-21 16:25:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-21 16:25:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2022-11-21 16:25:21,836 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 49 [2022-11-21 16:25:21,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:25:21,837 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2022-11-21 16:25:21,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 16:25:21,837 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2022-11-21 16:25:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-21 16:25:21,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:25:21,841 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:21,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:25:22,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:22,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:25:22,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:22,048 INFO L85 PathProgramCache]: Analyzing trace with hash -185688227, now seen corresponding path program 2 times [2022-11-21 16:25:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:22,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780319189] [2022-11-21 16:25:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:22,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:22,072 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:25:22,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756719880] [2022-11-21 16:25:22,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:25:22,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:22,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:22,077 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:25:22,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:25:22,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:25:22,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:25:22,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-21 16:25:22,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:25:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 71 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 16:25:22,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:25:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 71 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 16:25:25,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:25:25,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780319189] [2022-11-21 16:25:25,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 16:25:25,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756719880] [2022-11-21 16:25:25,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756719880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:25:25,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:25:25,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2022-11-21 16:25:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084688925] [2022-11-21 16:25:25,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:25:25,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-21 16:25:25,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:25:25,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-21 16:25:25,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 16:25:25,358 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 33 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 32 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-21 16:25:27,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:25:27,163 INFO L93 Difference]: Finished difference Result 120 states and 134 transitions. [2022-11-21 16:25:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 16:25:27,164 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 32 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 59 [2022-11-21 16:25:27,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:25:27,165 INFO L225 Difference]: With dead ends: 120 [2022-11-21 16:25:27,165 INFO L226 Difference]: Without dead ends: 112 [2022-11-21 16:25:27,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=269, Invalid=1623, Unknown=0, NotChecked=0, Total=1892 [2022-11-21 16:25:27,167 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:25:27,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 182 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 16:25:27,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-21 16:25:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2022-11-21 16:25:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 80 states have (on average 1.125) internal successors, (90), 80 states have internal predecessors, (90), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-21 16:25:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2022-11-21 16:25:27,193 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 59 [2022-11-21 16:25:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:25:27,193 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2022-11-21 16:25:27,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 32 states have internal predecessors, (72), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-21 16:25:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2022-11-21 16:25:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-21 16:25:27,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:25:27,195 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:25:27,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:25:27,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 16:25:27,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:25:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:25:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash 494370143, now seen corresponding path program 1 times [2022-11-21 16:25:27,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:25:27,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908893600] [2022-11-21 16:25:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:25:27,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 16:25:27,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318447005] [2022-11-21 16:25:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:25:27,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:27,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:27,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:25:27,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:25:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:25:27,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:25:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:25:27,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:25:27,576 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:25:27,577 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 16:25:27,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:25:27,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:25:27,796 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-21 16:25:27,800 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:25:27,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:25:27 BoogieIcfgContainer [2022-11-21 16:25:27,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:25:27,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:25:27,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:25:27,856 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:25:27,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:25:15" (3/4) ... [2022-11-21 16:25:27,858 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 16:25:27,915 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:25:27,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:25:27,916 INFO L158 Benchmark]: Toolchain (without parser) took 13435.56ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 106.7MB in the beginning and 66.3MB in the end (delta: 40.4MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2022-11-21 16:25:27,916 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 151.0MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:25:27,917 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.21ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 96.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:25:27,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.40ms. Allocated memory is still 151.0MB. Free memory was 96.0MB in the beginning and 94.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:25:27,918 INFO L158 Benchmark]: Boogie Preprocessor took 36.44ms. Allocated memory is still 151.0MB. Free memory was 94.3MB in the beginning and 93.5MB in the end (delta: 797.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:25:27,918 INFO L158 Benchmark]: RCFGBuilder took 377.13ms. Allocated memory is still 151.0MB. Free memory was 93.2MB in the beginning and 83.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:25:27,918 INFO L158 Benchmark]: TraceAbstraction took 12530.79ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 82.3MB in the beginning and 70.5MB in the end (delta: 11.8MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2022-11-21 16:25:27,920 INFO L158 Benchmark]: Witness Printer took 60.50ms. Allocated memory is still 182.5MB. Free memory was 70.5MB in the beginning and 66.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:25:27,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 151.0MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.21ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 96.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.40ms. Allocated memory is still 151.0MB. Free memory was 96.0MB in the beginning and 94.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.44ms. Allocated memory is still 151.0MB. Free memory was 94.3MB in the beginning and 93.5MB in the end (delta: 797.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 377.13ms. Allocated memory is still 151.0MB. Free memory was 93.2MB in the beginning and 83.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12530.79ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 82.3MB in the beginning and 70.5MB in the end (delta: 11.8MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. * Witness Printer took 60.50ms. Allocated memory is still 182.5MB. Free memory was 70.5MB in the beginning and 66.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=-7, x=0, X=9, Y=1, y=0] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-7, X=9, x=0, Y=1, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-7, x=0, X=9, x=0, x=0, y=0, Y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=-7, x=0, x=0, x=0, X=9, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-7, x=0, x=0, x=0, X=9, y=0, Y=1] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=1, v=-5, x=0, x=0, x=0, X=9, Y=1, y=0] [L45] x++ VAL [counter=1, v=-5, x=1, x=0, x=0, X=9, y=0, Y=1] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-5, x=0, x=0, X=9, x=1, y=0, Y=1] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-5, x=0, X=9, x=1, x=1, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-5, x=0, x=1, x=1, X=9, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-5, x=1, x=0, X=9, x=1, y=0, Y=1] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-3, x=1, x=1, X=9, x=0, y=0, Y=1] [L45] x++ VAL [counter=2, v=-3, x=1, x=0, X=9, x=2, y=0, Y=1] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-3, x=2, X=9, x=1, x=0, y=0, Y=1] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-3, X=9, x=2, x=0, x=2, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=-3, x=0, X=9, x=2, x=2, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-3, x=2, X=9, x=0, x=2, y=0, Y=1] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-1, x=2, x=0, x=2, X=9, Y=1, y=0] [L45] x++ VAL [counter=3, v=-1, x=2, x=0, X=9, x=3, y=0, Y=1] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-1, x=2, x=3, x=0, X=9, Y=1, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-1, x=3, x=3, x=0, X=9, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=-1, X=9, x=3, x=0, x=3, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-1, x=3, x=3, X=9, x=0, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=1, x=3, x=0, x=3, X=9, y=0, Y=1] [L45] x++ VAL [counter=4, v=1, x=4, x=3, x=0, X=9, Y=1, y=0] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=1, x=4, x=0, X=9, x=3, Y=1, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=1, X=9, x=0, x=4, x=4, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=1, x=4, X=9, x=4, x=0, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=1, x=4, X=9, x=0, x=4, Y=1, y=0] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=5, v=-15, X=9, x=4, x=0, x=4, y=1, Y=1] [L45] x++ VAL [counter=5, v=-15, x=0, X=9, x=5, x=4, Y=1, y=1] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-15, X=9, x=4, x=5, x=0, y=1, Y=1] [L31] COND FALSE !(counter++<5) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=6, v=-15, x=5, x=5, x=5, X=9, Y=1, y=1] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=6] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=6] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.4s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 252 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 251 mSDsluCounter, 580 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 487 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1414 IncrementalHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 93 mSDtfsCounter, 1414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 379 GetRequests, 249 SyntacticMatches, 6 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=6, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 2636 SizeOfPredicates, 30 NumberOfNonLiveVariables, 636 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 164/434 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-21 16:25:27,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d015d4e-4ab1-4493-b58f-c53e1ddc0bba/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE