./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8 --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 0a6d36c45579adaf3871b264b96aba9fa14294bc645c23d191a4e77c149500df --- 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-e04fb08 [2022-11-16 11:24:12,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:24:12,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:24:12,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:24:12,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:24:12,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:24:12,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:24:12,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:24:12,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:24:12,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:24:12,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:24:12,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:24:12,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:24:12,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:24:12,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:24:12,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:24:12,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:24:12,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:24:12,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:24:12,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:24:12,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:24:12,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:24:12,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:24:12,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:24:12,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:24:12,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:24:12,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:24:12,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:24:12,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:24:12,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:24:12,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:24:12,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:24:12,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:24:12,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:24:12,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:24:12,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:24:12,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:24:12,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:24:12,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:24:12,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:24:12,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:24:12,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:24:12,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:24:12,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:24:12,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:24:12,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:24:12,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:24:12,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:24:12,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:24:12,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:24:12,324 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:24:12,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:24:12,324 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:24:12,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:24:12,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:24:12,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:24:12,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:24:12,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:24:12,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:24:12,326 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:24:12,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:24:12,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:24:12,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:24:12,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:24:12,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:24:12,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:24:12,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:24:12,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:24:12,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:24:12,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:24:12,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:24:12,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:24:12,330 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:24:12,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:24:12,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:24:12,331 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_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a6d36c45579adaf3871b264b96aba9fa14294bc645c23d191a4e77c149500df [2022-11-16 11:24:12,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:24:12,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:24:12,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:24:12,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:24:12,615 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:24:12,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c [2022-11-16 11:24:12,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/data/8c9e1f1bd/3892a4ef653c4500993ce10377f934f1/FLAG163af7142 [2022-11-16 11:24:13,198 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:24:13,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c [2022-11-16 11:24:13,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/data/8c9e1f1bd/3892a4ef653c4500993ce10377f934f1/FLAG163af7142 [2022-11-16 11:24:13,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/data/8c9e1f1bd/3892a4ef653c4500993ce10377f934f1 [2022-11-16 11:24:13,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:24:13,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:24:13,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:24:13,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:24:13,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:24:13,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf2f52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13, skipping insertion in model container [2022-11-16 11:24:13,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:24:13,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:24:13,816 WARN L229 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_724399e2-ba23-483d-8c02-bdd3db315162/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c[489,502] [2022-11-16 11:24:13,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:24:13,844 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:24:13,855 WARN L229 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_724399e2-ba23-483d-8c02-bdd3db315162/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound10.c[489,502] [2022-11-16 11:24:13,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:24:13,878 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:24:13,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13 WrapperNode [2022-11-16 11:24:13,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:24:13,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:24:13,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:24:13,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:24:13,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,918 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2022-11-16 11:24:13,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:24:13,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:24:13,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:24:13,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:24:13,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,942 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:24:13,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:24:13,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:24:13,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:24:13,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (1/1) ... [2022-11-16 11:24:13,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:24:13,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:13,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:24:13,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:24:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:24:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:24:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:24:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:24:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:24:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:24:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:24:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:24:14,083 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:24:14,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:24:14,339 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:24:14,363 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:24:14,363 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:24:14,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:14 BoogieIcfgContainer [2022-11-16 11:24:14,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:24:14,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:24:14,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:24:14,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:24:14,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:24:13" (1/3) ... [2022-11-16 11:24:14,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6552a5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:14, skipping insertion in model container [2022-11-16 11:24:14,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:24:13" (2/3) ... [2022-11-16 11:24:14,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6552a5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:24:14, skipping insertion in model container [2022-11-16 11:24:14,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:14" (3/3) ... [2022-11-16 11:24:14,391 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound10.c [2022-11-16 11:24:14,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:24:14,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:24:14,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:24:14,518 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;@32b8ddc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:24:14,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:24:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:24:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:24:14,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:14,537 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:14,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1165920622, now seen corresponding path program 1 times [2022-11-16 11:24:14,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:14,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835291812] [2022-11-16 11:24:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:14,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:14,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:24:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:24:14,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:14,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835291812] [2022-11-16 11:24:14,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835291812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:14,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:14,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:24:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924187083] [2022-11-16 11:24:14,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:14,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:24:14,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:14,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:24:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:24:14,866 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:24:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:14,912 INFO L93 Difference]: Finished difference Result 57 states and 89 transitions. [2022-11-16 11:24:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:24:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-16 11:24:14,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:14,936 INFO L225 Difference]: With dead ends: 57 [2022-11-16 11:24:14,941 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 11:24:14,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:24:14,952 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:14,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:24:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 11:24:14,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-16 11:24:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:24:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2022-11-16 11:24:15,000 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 18 [2022-11-16 11:24:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:15,001 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-11-16 11:24:15,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:24:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2022-11-16 11:24:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:24:15,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:15,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:15,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:24:15,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash -542319922, now seen corresponding path program 1 times [2022-11-16 11:24:15,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:15,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961298743] [2022-11-16 11:24:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:24:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:24:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:24:15,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:15,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961298743] [2022-11-16 11:24:15,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961298743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:15,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:15,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:24:15,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912891841] [2022-11-16 11:24:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:15,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:24:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:15,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:24:15,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:15,259 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:24:15,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:15,333 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-11-16 11:24:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:24:15,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-16 11:24:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:15,335 INFO L225 Difference]: With dead ends: 38 [2022-11-16 11:24:15,335 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 11:24:15,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:24:15,337 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:15,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 87 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:24:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 11:24:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-16 11:24:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:24:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2022-11-16 11:24:15,347 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 19 [2022-11-16 11:24:15,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:15,348 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2022-11-16 11:24:15,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:24:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2022-11-16 11:24:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:24:15,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:15,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:15,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:24:15,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash -540651626, now seen corresponding path program 1 times [2022-11-16 11:24:15,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:15,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916240350] [2022-11-16 11:24:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:15,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:15,369 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:15,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128935315] [2022-11-16 11:24:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:15,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:15,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:15,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:15,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:24:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:15,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:24:15,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:24:15,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:15,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:15,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916240350] [2022-11-16 11:24:15,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:15,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128935315] [2022-11-16 11:24:15,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128935315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:15,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:15,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:24:15,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754880588] [2022-11-16 11:24:15,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:15,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:24:15,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:15,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:24:15,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:24:15,599 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:24:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:15,729 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2022-11-16 11:24:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-16 11:24:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:15,731 INFO L225 Difference]: With dead ends: 45 [2022-11-16 11:24:15,731 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 11:24:15,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:24:15,733 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 10 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:15,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 156 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:24:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 11:24:15,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-11-16 11:24:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 states have internal predecessors, (30), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 11:24:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2022-11-16 11:24:15,748 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 19 [2022-11-16 11:24:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:15,749 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2022-11-16 11:24:15,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:24:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2022-11-16 11:24:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:24:15,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:15,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:15,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:15,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:15,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:15,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash -276555716, now seen corresponding path program 1 times [2022-11-16 11:24:15,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:15,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152979910] [2022-11-16 11:24:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:15,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:15,973 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:15,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331157174] [2022-11-16 11:24:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:15,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:15,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:15,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:15,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:24:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:16,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:24:16,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:24:16,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:16,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:16,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152979910] [2022-11-16 11:24:16,222 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:16,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331157174] [2022-11-16 11:24:16,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331157174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:16,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:16,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:24:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741104218] [2022-11-16 11:24:16,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:24:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:24:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:24:16,225 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:24:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:16,390 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2022-11-16 11:24:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:24:16,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-16 11:24:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:16,392 INFO L225 Difference]: With dead ends: 49 [2022-11-16 11:24:16,392 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 11:24:16,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:24:16,393 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 36 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:16,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 140 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:24:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 11:24:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-11-16 11:24:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 11:24:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2022-11-16 11:24:16,407 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 24 [2022-11-16 11:24:16,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:16,407 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2022-11-16 11:24:16,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:24:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2022-11-16 11:24:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:24:16,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:16,409 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:16,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:16,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:16,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:16,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1836785898, now seen corresponding path program 1 times [2022-11-16 11:24:16,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:16,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188348795] [2022-11-16 11:24:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:16,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:16,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:16,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088060189] [2022-11-16 11:24:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:16,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:16,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:16,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:16,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:24:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:16,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:24:16,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:24:16,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:17,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:17,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188348795] [2022-11-16 11:24:17,077 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:17,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088060189] [2022-11-16 11:24:17,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088060189] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:17,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:17,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-16 11:24:17,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386506172] [2022-11-16 11:24:17,078 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:17,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:24:17,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:24:17,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:24:17,080 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 11:24:17,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:17,408 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2022-11-16 11:24:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:24:17,409 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-11-16 11:24:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:17,412 INFO L225 Difference]: With dead ends: 71 [2022-11-16 11:24:17,413 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 11:24:17,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:24:17,414 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:17,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 101 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:24:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 11:24:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-16 11:24:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 39 states have internal predecessors, (47), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 11:24:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2022-11-16 11:24:17,435 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 29 [2022-11-16 11:24:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:17,435 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2022-11-16 11:24:17,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 11:24:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2022-11-16 11:24:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 11:24:17,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:17,437 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:17,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:24:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:17,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1071030291, now seen corresponding path program 1 times [2022-11-16 11:24:17,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:17,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597013146] [2022-11-16 11:24:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:17,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:17,665 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:17,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125536771] [2022-11-16 11:24:17,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:17,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:17,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:17,667 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:17,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:24:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:17,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:24:17,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:24:17,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:24:17,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:17,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597013146] [2022-11-16 11:24:17,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:17,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125536771] [2022-11-16 11:24:17,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125536771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:24:17,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:24:17,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:24:17,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280002745] [2022-11-16 11:24:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:24:17,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:24:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:24:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:24:17,790 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 11:24:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:17,864 INFO L93 Difference]: Finished difference Result 83 states and 119 transitions. [2022-11-16 11:24:17,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:24:17,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2022-11-16 11:24:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:17,869 INFO L225 Difference]: With dead ends: 83 [2022-11-16 11:24:17,869 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 11:24:17,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:24:17,872 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:17,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 128 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:24:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 11:24:17,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2022-11-16 11:24:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 45 states have internal predecessors, (50), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 11:24:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2022-11-16 11:24:17,918 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 35 [2022-11-16 11:24:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:17,921 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2022-11-16 11:24:17,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 11:24:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2022-11-16 11:24:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 11:24:17,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:17,927 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:17,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:18,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:18,133 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1689492770, now seen corresponding path program 1 times [2022-11-16 11:24:18,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:18,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146332236] [2022-11-16 11:24:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:18,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:18,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:18,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367583262] [2022-11-16 11:24:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:18,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:18,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:18,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:18,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:24:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:18,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:24:18,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:24:18,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:24:18,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:18,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146332236] [2022-11-16 11:24:18,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:18,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367583262] [2022-11-16 11:24:18,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367583262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:18,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:18,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-16 11:24:18,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098454019] [2022-11-16 11:24:18,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:18,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:24:18,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:18,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:24:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:24:18,406 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-16 11:24:18,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:18,597 INFO L93 Difference]: Finished difference Result 218 states and 286 transitions. [2022-11-16 11:24:18,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:24:18,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 38 [2022-11-16 11:24:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:18,601 INFO L225 Difference]: With dead ends: 218 [2022-11-16 11:24:18,602 INFO L226 Difference]: Without dead ends: 196 [2022-11-16 11:24:18,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:24:18,605 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 63 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:18,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 166 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:24:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-16 11:24:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 190. [2022-11-16 11:24:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 119 states have internal predecessors, (132), 61 states have call successors, (61), 21 states have call predecessors, (61), 20 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-16 11:24:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2022-11-16 11:24:18,676 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 38 [2022-11-16 11:24:18,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:18,677 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2022-11-16 11:24:18,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-16 11:24:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2022-11-16 11:24:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 11:24:18,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:18,684 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:18,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:18,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:18,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:18,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1691161066, now seen corresponding path program 1 times [2022-11-16 11:24:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:18,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747577681] [2022-11-16 11:24:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:18,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:18,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:18,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499274770] [2022-11-16 11:24:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:18,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:18,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:18,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:18,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:24:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:18,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:24:18,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:24:19,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:19,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:19,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747577681] [2022-11-16 11:24:19,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:19,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499274770] [2022-11-16 11:24:19,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499274770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:19,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:24:19,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-11-16 11:24:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554527836] [2022-11-16 11:24:19,201 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:19,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:24:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:24:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:24:19,202 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:24:19,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:19,370 INFO L93 Difference]: Finished difference Result 204 states and 260 transitions. [2022-11-16 11:24:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:24:19,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2022-11-16 11:24:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:19,372 INFO L225 Difference]: With dead ends: 204 [2022-11-16 11:24:19,372 INFO L226 Difference]: Without dead ends: 199 [2022-11-16 11:24:19,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:24:19,373 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:19,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 107 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:24:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-16 11:24:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-11-16 11:24:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 117 states have (on average 1.205128205128205) internal successors, (141), 128 states have internal predecessors, (141), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-16 11:24:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 250 transitions. [2022-11-16 11:24:19,405 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 250 transitions. Word has length 38 [2022-11-16 11:24:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:19,405 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 250 transitions. [2022-11-16 11:24:19,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:24:19,406 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 250 transitions. [2022-11-16 11:24:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 11:24:19,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:19,408 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:19,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:19,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:19,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:19,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:19,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1925895455, now seen corresponding path program 1 times [2022-11-16 11:24:19,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:19,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757372950] [2022-11-16 11:24:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:19,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:19,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:19,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667248978] [2022-11-16 11:24:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:19,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:19,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:19,626 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:19,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:24:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:19,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:24:19,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:24:19,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:24:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:19,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757372950] [2022-11-16 11:24:19,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:19,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667248978] [2022-11-16 11:24:19,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667248978] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:19,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:19,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-11-16 11:24:19,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293840253] [2022-11-16 11:24:19,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:19,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:24:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:24:19,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:24:19,972 INFO L87 Difference]: Start difference. First operand 199 states and 250 transitions. Second operand has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 11:24:20,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:20,193 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2022-11-16 11:24:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:24:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 40 [2022-11-16 11:24:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:20,202 INFO L225 Difference]: With dead ends: 228 [2022-11-16 11:24:20,202 INFO L226 Difference]: Without dead ends: 212 [2022-11-16 11:24:20,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:24:20,206 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:20,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 111 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:24:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-16 11:24:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2022-11-16 11:24:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 127 states have (on average 1.1653543307086613) internal successors, (148), 138 states have internal predecessors, (148), 57 states have call successors, (57), 25 states have call predecessors, (57), 25 states have return successors, (53), 46 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-16 11:24:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 258 transitions. [2022-11-16 11:24:20,248 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 258 transitions. Word has length 40 [2022-11-16 11:24:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:20,249 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 258 transitions. [2022-11-16 11:24:20,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 11:24:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 258 transitions. [2022-11-16 11:24:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 11:24:20,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:20,251 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:20,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:20,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:20,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:20,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:20,457 INFO L85 PathProgramCache]: Analyzing trace with hash 968731240, now seen corresponding path program 2 times [2022-11-16 11:24:20,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:20,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003302434] [2022-11-16 11:24:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:20,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:20,467 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:20,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325587875] [2022-11-16 11:24:20,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:24:20,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:20,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:20,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:20,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:24:20,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:24:20,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:20,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 11:24:20,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 11:24:20,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 11:24:20,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:20,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003302434] [2022-11-16 11:24:20,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:20,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325587875] [2022-11-16 11:24:20,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325587875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:20,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:20,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-16 11:24:20,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412036943] [2022-11-16 11:24:20,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:20,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:24:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:24:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:24:20,978 INFO L87 Difference]: Start difference. First operand 210 states and 258 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-16 11:24:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:21,927 INFO L93 Difference]: Finished difference Result 249 states and 310 transitions. [2022-11-16 11:24:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:24:21,928 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 43 [2022-11-16 11:24:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:21,930 INFO L225 Difference]: With dead ends: 249 [2022-11-16 11:24:21,930 INFO L226 Difference]: Without dead ends: 225 [2022-11-16 11:24:21,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:24:21,932 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 36 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:21,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 147 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:24:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-16 11:24:21,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 206. [2022-11-16 11:24:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 141 states have internal predecessors, (150), 45 states have call successors, (45), 27 states have call predecessors, (45), 27 states have return successors, (41), 37 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-16 11:24:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 236 transitions. [2022-11-16 11:24:21,992 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 236 transitions. Word has length 43 [2022-11-16 11:24:21,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:21,992 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 236 transitions. [2022-11-16 11:24:21,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 states have internal predecessors, (32), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-16 11:24:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 236 transitions. [2022-11-16 11:24:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 11:24:21,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:21,994 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:22,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:22,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:24:22,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash -715006568, now seen corresponding path program 1 times [2022-11-16 11:24:22,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:22,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738474434] [2022-11-16 11:24:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:22,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:22,218 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:22,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253953028] [2022-11-16 11:24:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:22,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:22,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:22,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:22,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:24:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:24:22,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 11:24:22,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-16 11:24:22,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-16 11:24:22,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:22,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738474434] [2022-11-16 11:24:22,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:22,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253953028] [2022-11-16 11:24:22,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253953028] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:22,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:22,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2022-11-16 11:24:22,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113836667] [2022-11-16 11:24:22,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:22,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:24:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:22,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:24:22,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:24:22,824 INFO L87 Difference]: Start difference. First operand 206 states and 236 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-16 11:24:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:23,514 INFO L93 Difference]: Finished difference Result 218 states and 252 transitions. [2022-11-16 11:24:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:24:23,515 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 57 [2022-11-16 11:24:23,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:23,516 INFO L225 Difference]: With dead ends: 218 [2022-11-16 11:24:23,516 INFO L226 Difference]: Without dead ends: 191 [2022-11-16 11:24:23,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:24:23,518 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 37 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:23,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 254 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:24:23,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-16 11:24:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2022-11-16 11:24:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 124 states have (on average 1.1129032258064515) internal successors, (138), 128 states have internal predecessors, (138), 36 states have call successors, (36), 24 states have call predecessors, (36), 24 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-16 11:24:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 208 transitions. [2022-11-16 11:24:23,559 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 208 transitions. Word has length 57 [2022-11-16 11:24:23,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:23,560 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 208 transitions. [2022-11-16 11:24:23,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-16 11:24:23,560 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 208 transitions. [2022-11-16 11:24:23,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 11:24:23,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:23,562 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:23,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 11:24:23,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:24:23,769 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash 985491918, now seen corresponding path program 2 times [2022-11-16 11:24:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:23,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140231391] [2022-11-16 11:24:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:23,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:23,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:23,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284342939] [2022-11-16 11:24:23,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:24:23,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:23,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:23,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:24:23,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:24:23,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:23,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:24:23,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 266 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 11:24:24,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 50 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-16 11:24:24,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:24:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140231391] [2022-11-16 11:24:24,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:24:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284342939] [2022-11-16 11:24:24,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284342939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:24:24,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:24,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-16 11:24:24,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697788791] [2022-11-16 11:24:24,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:24,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:24:24,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:24:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:24:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:24:24,268 INFO L87 Difference]: Start difference. First operand 185 states and 208 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-11-16 11:24:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:24,692 INFO L93 Difference]: Finished difference Result 512 states and 601 transitions. [2022-11-16 11:24:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:24:24,692 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 95 [2022-11-16 11:24:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:24,695 INFO L225 Difference]: With dead ends: 512 [2022-11-16 11:24:24,695 INFO L226 Difference]: Without dead ends: 503 [2022-11-16 11:24:24,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:24:24,697 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:24,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 251 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:24:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-16 11:24:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-11-16 11:24:24,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 334 states have (on average 1.095808383233533) internal successors, (366), 344 states have internal predecessors, (366), 102 states have call successors, (102), 66 states have call predecessors, (102), 66 states have return successors, (100), 92 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-16 11:24:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 568 transitions. [2022-11-16 11:24:24,805 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 568 transitions. Word has length 95 [2022-11-16 11:24:24,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:24,805 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 568 transitions. [2022-11-16 11:24:24,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-11-16 11:24:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 568 transitions. [2022-11-16 11:24:24,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-16 11:24:24,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:24,810 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:24,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:25,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:24:25,015 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:24:25,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash 325062734, now seen corresponding path program 3 times [2022-11-16 11:24:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:24:25,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715663089] [2022-11-16 11:24:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:24:25,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:24:25,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:24:25,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632171419] [2022-11-16 11:24:25,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:24:25,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:25,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:24:25,039 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:24:25,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:24:25,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-11-16 11:24:25,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-16 11:24:25,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:24:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:24:25,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:24:25,390 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:24:25,391 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:24:25,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:25,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:24:25,602 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:25,605 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:24:25,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:24:25 BoogieIcfgContainer [2022-11-16 11:24:25,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:24:25,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:24:25,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:24:25,686 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:24:25,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:24:14" (3/4) ... [2022-11-16 11:24:25,689 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 11:24:25,802 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:24:25,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:24:25,803 INFO L158 Benchmark]: Toolchain (without parser) took 12215.92ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 108.0MB in the beginning and 174.5MB in the end (delta: -66.5MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. [2022-11-16 11:24:25,803 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:24:25,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.21ms. Allocated memory is still 140.5MB. Free memory was 107.7MB in the beginning and 116.4MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:24:25,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.71ms. Allocated memory is still 140.5MB. Free memory was 115.9MB in the beginning and 114.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:24:25,804 INFO L158 Benchmark]: Boogie Preprocessor took 24.51ms. Allocated memory is still 140.5MB. Free memory was 114.8MB in the beginning and 113.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:24:25,805 INFO L158 Benchmark]: RCFGBuilder took 420.55ms. Allocated memory is still 140.5MB. Free memory was 113.3MB in the beginning and 102.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:24:25,805 INFO L158 Benchmark]: TraceAbstraction took 11318.08ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 101.7MB in the beginning and 69.4MB in the end (delta: 32.3MB). Peak memory consumption was 100.5MB. Max. memory is 16.1GB. [2022-11-16 11:24:25,805 INFO L158 Benchmark]: Witness Printer took 116.20ms. Allocated memory is still 205.5MB. Free memory was 69.4MB in the beginning and 174.5MB in the end (delta: -105.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:24:25,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.21ms. Allocated memory is still 140.5MB. Free memory was 107.7MB in the beginning and 116.4MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.71ms. Allocated memory is still 140.5MB. Free memory was 115.9MB in the beginning and 114.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.51ms. Allocated memory is still 140.5MB. Free memory was 114.8MB in the beginning and 113.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 420.55ms. Allocated memory is still 140.5MB. Free memory was 113.3MB in the beginning and 102.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11318.08ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 101.7MB in the beginning and 69.4MB in the end (delta: 32.3MB). Peak memory consumption was 100.5MB. Max. memory is 16.1GB. * Witness Printer took 116.20ms. Allocated memory is still 205.5MB. Free memory was 69.4MB in the beginning and 174.5MB in the end (delta: -105.1MB). Peak memory consumption was 2.1MB. 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: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=12, y=1] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=12, y=1] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [a=12, b=1, counter=0, p=1, q=0, r=0, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=12, b=1, counter=1, counter++=0, p=1, q=0, r=0, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=11, b=1, counter=1, p=1, q=0, r=-1, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=11, b=1, counter=2, counter++=1, p=1, q=0, r=-1, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=10, b=1, counter=2, p=1, q=0, r=-2, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=10, b=1, counter=3, counter++=2, p=1, q=0, r=-2, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=9, b=1, counter=3, p=1, q=0, r=-3, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=9, b=1, counter=4, counter++=3, p=1, q=0, r=-3, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=8, b=1, counter=4, p=1, q=0, r=-4, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=8, b=1, counter=5, counter++=4, p=1, q=0, r=-4, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=7, b=1, counter=5, p=1, q=0, r=-5, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=7, b=1, counter=6, counter++=5, p=1, q=0, r=-5, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=6, b=1, counter=6, p=1, q=0, r=-6, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=6, b=1, counter=7, counter++=6, p=1, q=0, r=-6, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=5, b=1, counter=7, p=1, q=0, r=-7, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=5, b=1, counter=8, counter++=7, p=1, q=0, r=-7, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=4, b=1, counter=8, p=1, q=0, r=-8, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=4, b=1, counter=9, counter++=8, p=1, q=0, r=-8, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=3, b=1, counter=9, p=1, q=0, r=-9, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=3, b=1, counter=10, counter++=9, p=1, q=0, r=-9, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=2, b=1, counter=10, p=1, q=0, r=-10, s=1, x=12, y=1] [L34] EXPR counter++ VAL [a=2, b=1, counter=11, counter++=10, p=1, q=0, r=-10, s=1, x=12, y=1] [L34] COND FALSE !(counter++<10) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [\old(cond)=0, counter=11] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L13] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.1s, OverallIterations: 13, TraceHistogramMax: 31, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 403 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 363 mSDsluCounter, 1687 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1254 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1553 IncrementalHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 433 mSDtfsCounter, 1553 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 744 GetRequests, 617 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=503occurred in iteration=12, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 42 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 711 ConstructedInterpolants, 0 QuantifiedInterpolants, 2408 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1213 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 750/1139 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! [2022-11-16 11:24:25,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724399e2-ba23-483d-8c02-bdd3db315162/bin/uautomizer-tPACEb0tL8/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