./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum60.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/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_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum60.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/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_616845b1-0a01-410a-95b0-f261fc42e4c5/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 6531e15623308e4078ac0600b5852029139b0fe65df20988c6e3b5d5367f33f6 --- 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 11:08:52,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:08:52,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:08:52,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:08:52,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:08:52,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:08:52,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:08:52,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:08:52,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:08:52,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:08:52,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:08:52,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:08:52,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:08:52,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:08:52,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:08:52,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:08:52,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:08:52,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:08:52,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:08:52,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:08:52,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:08:52,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:08:52,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:08:52,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:08:52,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:08:52,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:08:52,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:08:52,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:08:52,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:08:52,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:08:52,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:08:52,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:08:52,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:08:52,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:08:52,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:08:52,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:08:52,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:08:52,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:08:52,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:08:52,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:08:52,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:08:52,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:08:52,300 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:08:52,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:08:52,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:08:52,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:08:52,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:08:52,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:08:52,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:08:52,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:08:52,304 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:08:52,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:08:52,305 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:08:52,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:08:52,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:08:52,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:08:52,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:08:52,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:08:52,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:08:52,308 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:08:52,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:08:52,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:08:52,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:08:52,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:08:52,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:08:52,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:08:52,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:08:52,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:08:52,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:08:52,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:08:52,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:08:52,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:08:52,312 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:08:52,313 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:08:52,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:08:52,313 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_616845b1-0a01-410a-95b0-f261fc42e4c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6531e15623308e4078ac0600b5852029139b0fe65df20988c6e3b5d5367f33f6 [2022-11-16 11:08:52,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:08:52,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:08:52,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:08:52,728 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:08:52,729 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:08:52,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/reducercommutativity/rangesum60.i [2022-11-16 11:08:52,821 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/data/257a47e22/c33abbeea7a740deb0c2056be66e77ad/FLAG7b9c0214f [2022-11-16 11:08:53,360 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:08:53,361 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/sv-benchmarks/c/reducercommutativity/rangesum60.i [2022-11-16 11:08:53,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/data/257a47e22/c33abbeea7a740deb0c2056be66e77ad/FLAG7b9c0214f [2022-11-16 11:08:53,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/data/257a47e22/c33abbeea7a740deb0c2056be66e77ad [2022-11-16 11:08:53,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:08:53,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:08:53,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:08:53,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:08:53,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:08:53,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:08:53" (1/1) ... [2022-11-16 11:08:53,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fa5737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:53, skipping insertion in model container [2022-11-16 11:08:53,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:08:53" (1/1) ... [2022-11-16 11:08:53,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:08:53,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:08:53,981 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_616845b1-0a01-410a-95b0-f261fc42e4c5/sv-benchmarks/c/reducercommutativity/rangesum60.i[1465,1478] [2022-11-16 11:08:53,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:08:53,994 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:08:54,020 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_616845b1-0a01-410a-95b0-f261fc42e4c5/sv-benchmarks/c/reducercommutativity/rangesum60.i[1465,1478] [2022-11-16 11:08:54,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:08:54,037 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:08:54,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54 WrapperNode [2022-11-16 11:08:54,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:08:54,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:08:54,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:08:54,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:08:54,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,080 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-16 11:08:54,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:08:54,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:08:54,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:08:54,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:08:54,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,109 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:08:54,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:08:54,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:08:54,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:08:54,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (1/1) ... [2022-11-16 11:08:54,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:08:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:54,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:08:54,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:08:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:08:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:08:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:08:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:08:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:08:54,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:08:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:08:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2022-11-16 11:08:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2022-11-16 11:08:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:08:54,300 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:08:54,302 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:08:54,569 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:08:54,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:08:54,580 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:08:54,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:08:54 BoogieIcfgContainer [2022-11-16 11:08:54,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:08:54,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:08:54,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:08:54,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:08:54,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:08:53" (1/3) ... [2022-11-16 11:08:54,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547ca673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:08:54, skipping insertion in model container [2022-11-16 11:08:54,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:08:54" (2/3) ... [2022-11-16 11:08:54,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547ca673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:08:54, skipping insertion in model container [2022-11-16 11:08:54,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:08:54" (3/3) ... [2022-11-16 11:08:54,595 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum60.i [2022-11-16 11:08:54,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:08:54,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:08:54,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:08:54,694 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;@65450fd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:08:54,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:08:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:08:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:08:54,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:54,717 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:54,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:54,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:54,724 INFO L85 PathProgramCache]: Analyzing trace with hash -275565944, now seen corresponding path program 1 times [2022-11-16 11:08:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:54,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832613692] [2022-11-16 11:08:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:54,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:54,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832613692] [2022-11-16 11:08:54,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:54,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021355350] [2022-11-16 11:08:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:54,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:54,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:54,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:54,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:08:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:55,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:08:55,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:08:55,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:55,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021355350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:55,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:55,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:08:55,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219667058] [2022-11-16 11:08:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:55,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:08:55,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:55,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:08:55,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:08:55,313 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:08:55,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:55,361 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2022-11-16 11:08:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:08:55,366 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-11-16 11:08:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:55,386 INFO L225 Difference]: With dead ends: 52 [2022-11-16 11:08:55,386 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 11:08:55,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 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 11:08:55,405 INFO L413 NwaCegarLoop]: 34 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, 34 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 11:08:55,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:08:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 11:08:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-16 11:08:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:08:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-16 11:08:55,471 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 29 [2022-11-16 11:08:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:55,473 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-16 11:08:55,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:08:55,475 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-11-16 11:08:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:08:55,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:55,482 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:55,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:55,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:08:55,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1257002967, now seen corresponding path program 1 times [2022-11-16 11:08:55,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:55,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70141776] [2022-11-16 11:08:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:55,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:55,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:55,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70141776] [2022-11-16 11:08:55,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:55,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795351258] [2022-11-16 11:08:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:55,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:55,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:55,782 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:55,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:08:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:55,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:08:55,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:08:55,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:55,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795351258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:55,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:55,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:56,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823111393] [2022-11-16 11:08:56,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:56,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:56,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:56,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:56,006 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:08:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:56,047 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2022-11-16 11:08:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:56,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-11-16 11:08:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:56,055 INFO L225 Difference]: With dead ends: 46 [2022-11-16 11:08:56,056 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 11:08:56,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:56,059 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:56,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:08:56,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 11:08:56,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-16 11:08:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:08:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-11-16 11:08:56,077 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2022-11-16 11:08:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:56,078 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-11-16 11:08:56,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:08:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-11-16 11:08:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 11:08:56,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:56,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:56,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:56,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:56,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:56,291 INFO L85 PathProgramCache]: Analyzing trace with hash -653100523, now seen corresponding path program 1 times [2022-11-16 11:08:56,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:56,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650968693] [2022-11-16 11:08:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:56,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:56,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:56,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650968693] [2022-11-16 11:08:56,345 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:56,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829690743] [2022-11-16 11:08:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:56,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:56,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:56,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:56,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:08:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:56,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:08:56,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:08:56,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:56,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829690743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:56,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:56,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945195877] [2022-11-16 11:08:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:56,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:56,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:56,513 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:08:56,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:56,536 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2022-11-16 11:08:56,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:56,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-16 11:08:56,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:56,538 INFO L225 Difference]: With dead ends: 46 [2022-11-16 11:08:56,538 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 11:08:56,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:56,541 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:56,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:08:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 11:08:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-16 11:08:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:08:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-11-16 11:08:56,550 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 31 [2022-11-16 11:08:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:56,551 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-11-16 11:08:56,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:08:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-11-16 11:08:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 11:08:56,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:56,553 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:56,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:56,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:56,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1081404920, now seen corresponding path program 1 times [2022-11-16 11:08:56,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:56,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912259783] [2022-11-16 11:08:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:56,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912259783] [2022-11-16 11:08:56,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240811477] [2022-11-16 11:08:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:56,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:56,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:56,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:56,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:08:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:56,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:08:56,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:08:56,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:56,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240811477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:56,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:56,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:56,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800646575] [2022-11-16 11:08:56,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:56,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:56,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:56,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:56,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:56,989 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:08:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:57,007 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2022-11-16 11:08:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:57,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-11-16 11:08:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:57,018 INFO L225 Difference]: With dead ends: 44 [2022-11-16 11:08:57,019 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 11:08:57,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:57,021 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:57,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:08:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 11:08:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-16 11:08:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:08:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-11-16 11:08:57,034 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 40 [2022-11-16 11:08:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:57,038 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-11-16 11:08:57,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:08:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-11-16 11:08:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 11:08:57,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:57,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:57,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:57,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:57,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:57,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash -673301430, now seen corresponding path program 1 times [2022-11-16 11:08:57,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:57,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522848486] [2022-11-16 11:08:57,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:57,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:57,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:57,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522848486] [2022-11-16 11:08:57,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:08:57,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682153973] [2022-11-16 11:08:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:57,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:57,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:57,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:57,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:08:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:57,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:57,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 11:08:57,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:57,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682153973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:57,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:08:57,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:08:57,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048910058] [2022-11-16 11:08:57,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:57,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:57,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:57,469 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:08:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:57,495 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2022-11-16 11:08:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:57,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2022-11-16 11:08:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:57,502 INFO L225 Difference]: With dead ends: 55 [2022-11-16 11:08:57,502 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 11:08:57,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:08:57,504 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:57,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:08:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 11:08:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-11-16 11:08:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:08:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-16 11:08:57,522 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 42 [2022-11-16 11:08:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:57,522 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-16 11:08:57,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:08:57,523 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-16 11:08:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 11:08:57,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:57,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:57,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:57,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:57,738 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:57,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1042180377, now seen corresponding path program 1 times [2022-11-16 11:08:57,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:57,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399467374] [2022-11-16 11:08:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:57,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:57,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:08:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:57,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:08:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:08:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:08:57,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:57,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399467374] [2022-11-16 11:08:57,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399467374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:57,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127467204] [2022-11-16 11:08:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:57,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:57,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:57,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:57,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:08:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:58,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:58,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:08:58,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-16 11:08:58,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127467204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:58,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:08:58,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-16 11:08:58,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049953482] [2022-11-16 11:08:58,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:58,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:08:58,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:08:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:08:58,192 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 11:08:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:58,301 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2022-11-16 11:08:58,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:08:58,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2022-11-16 11:08:58,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:58,307 INFO L225 Difference]: With dead ends: 69 [2022-11-16 11:08:58,307 INFO L226 Difference]: Without dead ends: 42 [2022-11-16 11:08:58,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:08:58,309 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:58,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 70 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:08:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-16 11:08:58,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-11-16 11:08:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:08:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-11-16 11:08:58,329 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2022-11-16 11:08:58,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:58,330 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-11-16 11:08:58,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 11:08:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-11-16 11:08:58,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 11:08:58,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:58,333 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:58,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:58,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:58,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:58,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:58,534 INFO L85 PathProgramCache]: Analyzing trace with hash -604386836, now seen corresponding path program 2 times [2022-11-16 11:08:58,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:58,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618645598] [2022-11-16 11:08:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:58,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:08:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:58,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:08:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:58,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:08:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-16 11:08:58,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:58,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618645598] [2022-11-16 11:08:58,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618645598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:58,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665144900] [2022-11-16 11:08:58,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:08:58,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:58,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:58,737 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:58,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:08:58,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:08:58,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:08:58,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:08:58,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-16 11:08:58,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:08:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-16 11:08:59,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665144900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:08:59,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:08:59,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-16 11:08:59,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130905675] [2022-11-16 11:08:59,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:08:59,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:08:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:59,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:08:59,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:08:59,071 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 11:08:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:59,194 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2022-11-16 11:08:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:08:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-11-16 11:08:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:59,201 INFO L225 Difference]: With dead ends: 86 [2022-11-16 11:08:59,201 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 11:08:59,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:08:59,207 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:59,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 112 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:08:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 11:08:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2022-11-16 11:08:59,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:08:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-16 11:08:59,227 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 57 [2022-11-16 11:08:59,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:59,228 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-16 11:08:59,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 11:08:59,228 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-16 11:08:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 11:08:59,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:59,235 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:59,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:59,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:59,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:59,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:59,441 INFO L85 PathProgramCache]: Analyzing trace with hash 948362870, now seen corresponding path program 1 times [2022-11-16 11:08:59,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:59,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711494911] [2022-11-16 11:08:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:59,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:08:59,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659931407] [2022-11-16 11:08:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:59,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:59,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:59,516 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:59,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:08:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:59,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:08:59,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-16 11:08:59,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-16 11:09:00,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:00,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711494911] [2022-11-16 11:09:00,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:00,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659931407] [2022-11-16 11:09:00,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659931407] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:00,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:00,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-16 11:09:00,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903248976] [2022-11-16 11:09:00,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:00,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:09:00,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:00,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:09:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:09:00,184 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 11:09:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:00,327 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2022-11-16 11:09:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:09:00,328 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 78 [2022-11-16 11:09:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:00,329 INFO L225 Difference]: With dead ends: 103 [2022-11-16 11:09:00,329 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 11:09:00,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:09:00,331 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:00,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 106 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:09:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 11:09:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-16 11:09:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:09:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2022-11-16 11:09:00,342 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 78 [2022-11-16 11:09:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:00,342 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2022-11-16 11:09:00,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 11:09:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2022-11-16 11:09:00,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 11:09:00,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:00,344 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:00,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:00,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 11:09:00,551 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:00,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:00,552 INFO L85 PathProgramCache]: Analyzing trace with hash 468172686, now seen corresponding path program 2 times [2022-11-16 11:09:00,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:00,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775692321] [2022-11-16 11:09:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:00,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:00,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:00,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348612427] [2022-11-16 11:09:00,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:09:00,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:00,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:00,615 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:00,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:09:00,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:09:00,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:00,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:09:00,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-16 11:09:01,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-16 11:09:02,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:02,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775692321] [2022-11-16 11:09:02,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:02,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348612427] [2022-11-16 11:09:02,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348612427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:02,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:02,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-16 11:09:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099754605] [2022-11-16 11:09:02,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:02,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 11:09:02,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 11:09:02,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:09:02,464 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 48 states, 48 states have (on average 2.4791666666666665) internal successors, (119), 48 states have internal predecessors, (119), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 11:09:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:02,725 INFO L93 Difference]: Finished difference Result 151 states and 186 transitions. [2022-11-16 11:09:02,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 11:09:02,726 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.4791666666666665) internal successors, (119), 48 states have internal predecessors, (119), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 102 [2022-11-16 11:09:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:02,727 INFO L225 Difference]: With dead ends: 151 [2022-11-16 11:09:02,727 INFO L226 Difference]: Without dead ends: 123 [2022-11-16 11:09:02,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:09:02,732 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 46 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:02,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 236 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:09:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-16 11:09:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-11-16 11:09:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:09:02,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2022-11-16 11:09:02,756 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 102 [2022-11-16 11:09:02,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:02,757 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2022-11-16 11:09:02,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.4791666666666665) internal successors, (119), 48 states have internal predecessors, (119), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 11:09:02,757 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2022-11-16 11:09:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 11:09:02,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:02,759 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:02,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:02,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:02,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1075718590, now seen corresponding path program 3 times [2022-11-16 11:09:02,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:02,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030953259] [2022-11-16 11:09:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:02,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:03,095 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:03,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800625585] [2022-11-16 11:09:03,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:09:03,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:03,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:03,101 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:03,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:09:03,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:09:03,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:03,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:03,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 2190 trivial. 0 not checked. [2022-11-16 11:09:03,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2266 trivial. 0 not checked. [2022-11-16 11:09:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:03,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030953259] [2022-11-16 11:09:03,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:03,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800625585] [2022-11-16 11:09:03,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800625585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:03,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:03,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 11:09:03,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339044815] [2022-11-16 11:09:03,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:09:03,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:03,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:09:03,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:09:03,349 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:09:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:03,384 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2022-11-16 11:09:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:09:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 150 [2022-11-16 11:09:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:03,391 INFO L225 Difference]: With dead ends: 149 [2022-11-16 11:09:03,391 INFO L226 Difference]: Without dead ends: 129 [2022-11-16 11:09:03,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:09:03,393 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:03,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:09:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-16 11:09:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-11-16 11:09:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 124 states have internal predecessors, (129), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:09:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2022-11-16 11:09:03,423 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 150 [2022-11-16 11:09:03,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:03,427 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2022-11-16 11:09:03,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:09:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2022-11-16 11:09:03,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 11:09:03,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:03,439 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 9, 9, 6, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:03,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:03,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:09:03,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:03,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:03,646 INFO L85 PathProgramCache]: Analyzing trace with hash -379068284, now seen corresponding path program 4 times [2022-11-16 11:09:03,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:03,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038405452] [2022-11-16 11:09:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:03,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:03,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:03,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079778557] [2022-11-16 11:09:03,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:09:03,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:03,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:03,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:03,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:09:04,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:09:04,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:04,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 11:09:04,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 11:09:05,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 11:09:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:07,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038405452] [2022-11-16 11:09:07,962 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:09:07,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079778557] [2022-11-16 11:09:07,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079778557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:07,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:09:07,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 62 [2022-11-16 11:09:07,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151152892] [2022-11-16 11:09:07,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:07,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-16 11:09:07,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:07,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-16 11:09:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-11-16 11:09:07,967 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 62 states, 62 states have (on average 2.403225806451613) internal successors, (149), 62 states have internal predecessors, (149), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 11:09:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:09:08,228 INFO L93 Difference]: Finished difference Result 191 states and 216 transitions. [2022-11-16 11:09:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 11:09:08,229 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.403225806451613) internal successors, (149), 62 states have internal predecessors, (149), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 156 [2022-11-16 11:09:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:09:08,231 INFO L225 Difference]: With dead ends: 191 [2022-11-16 11:09:08,231 INFO L226 Difference]: Without dead ends: 157 [2022-11-16 11:09:08,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 216 SyntacticMatches, 34 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2022-11-16 11:09:08,236 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:09:08,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 262 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:09:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-16 11:09:08,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-11-16 11:09:08,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 152 states have (on average 1.0328947368421053) internal successors, (157), 152 states have internal predecessors, (157), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:09:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 163 transitions. [2022-11-16 11:09:08,261 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 163 transitions. Word has length 156 [2022-11-16 11:09:08,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:09:08,261 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 163 transitions. [2022-11-16 11:09:08,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.403225806451613) internal successors, (149), 62 states have internal predecessors, (149), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 11:09:08,262 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 163 transitions. [2022-11-16 11:09:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-16 11:09:08,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:09:08,267 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 9, 9, 6, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:08,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:09:08,474 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:09:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1942589664, now seen corresponding path program 5 times [2022-11-16 11:09:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:08,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740541994] [2022-11-16 11:09:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:08,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:09:08,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022835548] [2022-11-16 11:09:08,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:09:08,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:08,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:08,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:08,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:10:50,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2022-11-16 11:10:50,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:10:50,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:10:50,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3766 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 3686 trivial. 0 not checked. [2022-11-16 11:10:50,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3766 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 3716 trivial. 0 not checked. [2022-11-16 11:10:50,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:50,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740541994] [2022-11-16 11:10:50,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:10:50,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022835548] [2022-11-16 11:10:50,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022835548] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:50,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:10:50,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:10:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665058168] [2022-11-16 11:10:50,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:50,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:10:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:10:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:10:50,302 INFO L87 Difference]: Start difference. First operand 157 states and 163 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:10:50,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:50,343 INFO L93 Difference]: Finished difference Result 201 states and 222 transitions. [2022-11-16 11:10:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:10:50,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 184 [2022-11-16 11:10:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:50,345 INFO L225 Difference]: With dead ends: 201 [2022-11-16 11:10:50,346 INFO L226 Difference]: Without dead ends: 169 [2022-11-16 11:10:50,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:10:50,348 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:50,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 50 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:10:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-16 11:10:50,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-16 11:10:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 164 states have (on average 1.0548780487804879) internal successors, (173), 164 states have internal predecessors, (173), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:50,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 179 transitions. [2022-11-16 11:10:50,365 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 179 transitions. Word has length 184 [2022-11-16 11:10:50,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:50,366 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 179 transitions. [2022-11-16 11:10:50,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:10:50,366 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 179 transitions. [2022-11-16 11:10:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-16 11:10:50,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:50,370 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 21, 21, 15, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:50,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-16 11:10:50,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:50,589 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:50,590 INFO L85 PathProgramCache]: Analyzing trace with hash 853335264, now seen corresponding path program 6 times [2022-11-16 11:10:50,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:50,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022441468] [2022-11-16 11:10:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:50,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:50,669 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:10:50,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526287350] [2022-11-16 11:10:50,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:10:50,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:50,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:50,671 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:50,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:10:51,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-11-16 11:10:51,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:10:51,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:10:51,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 332 proven. 16 refuted. 0 times theorem prover too weak. 3976 trivial. 0 not checked. [2022-11-16 11:10:51,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4308 trivial. 0 not checked. [2022-11-16 11:10:51,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:51,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022441468] [2022-11-16 11:10:51,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:10:51,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526287350] [2022-11-16 11:10:51,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526287350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:51,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:10:51,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 11:10:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395785695] [2022-11-16 11:10:51,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:51,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:10:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:10:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:10:51,229 INFO L87 Difference]: Start difference. First operand 169 states and 179 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:10:51,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:51,277 INFO L93 Difference]: Finished difference Result 213 states and 235 transitions. [2022-11-16 11:10:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:10:51,277 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 220 [2022-11-16 11:10:51,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:51,279 INFO L225 Difference]: With dead ends: 213 [2022-11-16 11:10:51,279 INFO L226 Difference]: Without dead ends: 181 [2022-11-16 11:10:51,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:10:51,280 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:51,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:10:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-16 11:10:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-11-16 11:10:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 176 states have (on average 1.0511363636363635) internal successors, (185), 176 states have internal predecessors, (185), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 191 transitions. [2022-11-16 11:10:51,288 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 191 transitions. Word has length 220 [2022-11-16 11:10:51,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:51,289 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 191 transitions. [2022-11-16 11:10:51,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:10:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 191 transitions. [2022-11-16 11:10:51,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-16 11:10:51,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:51,293 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 21, 21, 15, 10, 10, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:51,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:51,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:51,501 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash -840128276, now seen corresponding path program 7 times [2022-11-16 11:10:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:51,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347808334] [2022-11-16 11:10:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:51,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:10:51,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828493776] [2022-11-16 11:10:51,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:10:51,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:51,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:51,586 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:51,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:10:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:51,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:10:51,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 157 proven. 7 refuted. 0 times theorem prover too weak. 4244 trivial. 0 not checked. [2022-11-16 11:10:51,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 37 proven. 337 refuted. 0 times theorem prover too weak. 4034 trivial. 0 not checked. [2022-11-16 11:10:52,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:52,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347808334] [2022-11-16 11:10:52,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:10:52,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828493776] [2022-11-16 11:10:52,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828493776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:52,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:10:52,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:10:52,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483511846] [2022-11-16 11:10:52,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:52,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:10:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:52,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:10:52,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:10:52,011 INFO L87 Difference]: Start difference. First operand 181 states and 191 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:10:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:52,051 INFO L93 Difference]: Finished difference Result 249 states and 274 transitions. [2022-11-16 11:10:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:10:52,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 232 [2022-11-16 11:10:52,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:52,054 INFO L225 Difference]: With dead ends: 249 [2022-11-16 11:10:52,054 INFO L226 Difference]: Without dead ends: 193 [2022-11-16 11:10:52,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:10:52,055 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:52,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 99 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:10:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-16 11:10:52,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-11-16 11:10:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.047872340425532) internal successors, (197), 188 states have internal predecessors, (197), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 203 transitions. [2022-11-16 11:10:52,065 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 203 transitions. Word has length 232 [2022-11-16 11:10:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:52,065 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 203 transitions. [2022-11-16 11:10:52,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:10:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 203 transitions. [2022-11-16 11:10:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-16 11:10:52,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:52,070 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 33, 33, 18, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:52,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:52,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:52,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:52,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1764241452, now seen corresponding path program 8 times [2022-11-16 11:10:52,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:52,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137679778] [2022-11-16 11:10:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:52,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:52,349 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:10:52,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766472330] [2022-11-16 11:10:52,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:10:52,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:52,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:52,352 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:52,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 11:10:52,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:10:52,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:10:52,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:10:52,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5398 backedges. 549 proven. 57 refuted. 0 times theorem prover too weak. 4792 trivial. 0 not checked. [2022-11-16 11:10:52,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5398 backedges. 93 proven. 835 refuted. 0 times theorem prover too weak. 4470 trivial. 0 not checked. [2022-11-16 11:10:53,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:53,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137679778] [2022-11-16 11:10:53,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:10:53,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766472330] [2022-11-16 11:10:53,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766472330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:53,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:10:53,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:10:53,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878709267] [2022-11-16 11:10:53,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:53,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:10:53,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:53,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:10:53,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:10:53,013 INFO L87 Difference]: Start difference. First operand 193 states and 203 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:10:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:53,090 INFO L93 Difference]: Finished difference Result 285 states and 314 transitions. [2022-11-16 11:10:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:10:53,091 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 268 [2022-11-16 11:10:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:53,092 INFO L225 Difference]: With dead ends: 285 [2022-11-16 11:10:53,093 INFO L226 Difference]: Without dead ends: 217 [2022-11-16 11:10:53,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:10:53,094 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:53,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 75 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:10:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-16 11:10:53,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-11-16 11:10:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 212 states have (on average 1.0424528301886793) internal successors, (221), 212 states have internal predecessors, (221), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 227 transitions. [2022-11-16 11:10:53,105 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 227 transitions. Word has length 268 [2022-11-16 11:10:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:53,106 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 227 transitions. [2022-11-16 11:10:53,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:10:53,106 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 227 transitions. [2022-11-16 11:10:53,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-16 11:10:53,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:53,113 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 57, 57, 42, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:53,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-16 11:10:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:10:53,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:53,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1339400532, now seen corresponding path program 9 times [2022-11-16 11:10:53,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:53,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127415033] [2022-11-16 11:10:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:53,397 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:10:53,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028651526] [2022-11-16 11:10:53,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:10:53,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:53,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:53,399 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:53,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 11:10:54,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-16 11:10:54,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:10:54,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:10:54,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8674 backedges. 896 proven. 40 refuted. 0 times theorem prover too weak. 7738 trivial. 0 not checked. [2022-11-16 11:10:54,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8674 backedges. 896 proven. 40 refuted. 0 times theorem prover too weak. 7738 trivial. 0 not checked. [2022-11-16 11:10:54,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:54,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127415033] [2022-11-16 11:10:54,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:10:54,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028651526] [2022-11-16 11:10:54,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028651526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:54,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:10:54,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:10:54,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016055382] [2022-11-16 11:10:54,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:54,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:10:54,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:54,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:10:54,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:10:54,588 INFO L87 Difference]: Start difference. First operand 217 states and 227 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:54,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:54,697 INFO L93 Difference]: Finished difference Result 333 states and 370 transitions. [2022-11-16 11:10:54,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:10:54,698 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 340 [2022-11-16 11:10:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:54,700 INFO L225 Difference]: With dead ends: 333 [2022-11-16 11:10:54,700 INFO L226 Difference]: Without dead ends: 241 [2022-11-16 11:10:54,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 664 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:10:54,701 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 57 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:54,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 122 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:10:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-16 11:10:54,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-16 11:10:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 236 states have (on average 1.0720338983050848) internal successors, (253), 236 states have internal predecessors, (253), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 259 transitions. [2022-11-16 11:10:54,715 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 259 transitions. Word has length 340 [2022-11-16 11:10:54,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:54,715 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 259 transitions. [2022-11-16 11:10:54,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:10:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 259 transitions. [2022-11-16 11:10:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-11-16 11:10:54,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:54,724 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 60, 60, 42, 39, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:54,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:54,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:10:54,938 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:54,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1389660628, now seen corresponding path program 10 times [2022-11-16 11:10:54,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:54,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844670557] [2022-11-16 11:10:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:55,032 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:10:55,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633320599] [2022-11-16 11:10:55,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:10:55,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:55,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:55,034 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:55,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 11:10:55,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:10:55,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:10:55,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:10:55,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13678 backedges. 6252 proven. 301 refuted. 0 times theorem prover too weak. 7125 trivial. 0 not checked. [2022-11-16 11:10:55,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 13678 backedges. 2802 proven. 2546 refuted. 0 times theorem prover too weak. 8330 trivial. 0 not checked. [2022-11-16 11:10:56,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:56,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844670557] [2022-11-16 11:10:56,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:10:56,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633320599] [2022-11-16 11:10:56,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633320599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:56,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:10:56,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 11:10:56,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106838699] [2022-11-16 11:10:56,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:56,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:10:56,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:10:56,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:10:56,253 INFO L87 Difference]: Start difference. First operand 241 states and 259 transitions. Second operand has 32 states, 32 states have (on average 3.78125) internal successors, (121), 32 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:10:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:56,432 INFO L93 Difference]: Finished difference Result 405 states and 458 transitions. [2022-11-16 11:10:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:10:56,433 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.78125) internal successors, (121), 32 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 412 [2022-11-16 11:10:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:56,437 INFO L225 Difference]: With dead ends: 405 [2022-11-16 11:10:56,437 INFO L226 Difference]: Without dead ends: 289 [2022-11-16 11:10:56,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:10:56,439 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:56,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 147 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:10:56,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-16 11:10:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-11-16 11:10:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 284 states have (on average 1.0598591549295775) internal successors, (301), 284 states have internal predecessors, (301), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 307 transitions. [2022-11-16 11:10:56,455 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 307 transitions. Word has length 412 [2022-11-16 11:10:56,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:56,455 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 307 transitions. [2022-11-16 11:10:56,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.78125) internal successors, (121), 32 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:10:56,456 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 307 transitions. [2022-11-16 11:10:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-11-16 11:10:56,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:56,468 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 90, 60, 60, 39, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:56,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:56,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:10:56,677 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:56,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:56,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1144607532, now seen corresponding path program 11 times [2022-11-16 11:10:56,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:56,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419741814] [2022-11-16 11:10:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:56,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:56,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:10:56,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96593229] [2022-11-16 11:10:56,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:10:56,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:56,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:56,753 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:56,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 11:10:57,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-11-16 11:10:57,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:10:57,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:10:57,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 28870 backedges. 12531 proven. 301 refuted. 0 times theorem prover too weak. 16038 trivial. 0 not checked. [2022-11-16 11:10:57,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 28870 backedges. 1261 proven. 4121 refuted. 0 times theorem prover too weak. 23488 trivial. 0 not checked. [2022-11-16 11:10:57,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:57,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419741814] [2022-11-16 11:10:57,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:10:57,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96593229] [2022-11-16 11:10:57,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96593229] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:57,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:10:57,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2022-11-16 11:10:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895273752] [2022-11-16 11:10:57,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:57,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:10:57,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:10:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:10:57,918 INFO L87 Difference]: Start difference. First operand 289 states and 307 transitions. Second operand has 32 states, 32 states have (on average 3.75) internal successors, (120), 32 states have internal predecessors, (120), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:10:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:58,162 INFO L93 Difference]: Finished difference Result 501 states and 570 transitions. [2022-11-16 11:10:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 11:10:58,162 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.75) internal successors, (120), 32 states have internal predecessors, (120), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 556 [2022-11-16 11:10:58,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:58,165 INFO L225 Difference]: With dead ends: 501 [2022-11-16 11:10:58,165 INFO L226 Difference]: Without dead ends: 337 [2022-11-16 11:10:58,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1078 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:10:58,167 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 120 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:58,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 74 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:10:58,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-16 11:10:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-11-16 11:10:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 332 states have (on average 1.0993975903614457) internal successors, (365), 332 states have internal predecessors, (365), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:10:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 371 transitions. [2022-11-16 11:10:58,180 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 371 transitions. Word has length 556 [2022-11-16 11:10:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:58,181 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 371 transitions. [2022-11-16 11:10:58,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.75) internal successors, (120), 32 states have internal predecessors, (120), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:10:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 371 transitions. [2022-11-16 11:10:58,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2022-11-16 11:10:58,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:58,188 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 90, 87, 60, 60, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:58,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:58,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:10:58,395 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:58,395 INFO L85 PathProgramCache]: Analyzing trace with hash 832504364, now seen corresponding path program 12 times [2022-11-16 11:10:58,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:58,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818171795] [2022-11-16 11:10:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:58,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:10:58,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105404930] [2022-11-16 11:10:58,493 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:10:58,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:58,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:58,495 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:58,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 11:11:00,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2022-11-16 11:11:00,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:11:00,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:11:00,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 50974 backedges. 21132 proven. 100 refuted. 0 times theorem prover too weak. 29742 trivial. 0 not checked. [2022-11-16 11:11:00,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:11:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 50974 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 50874 trivial. 0 not checked. [2022-11-16 11:11:00,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:00,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818171795] [2022-11-16 11:11:00,654 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:11:00,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105404930] [2022-11-16 11:11:00,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105404930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:11:00,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:11:00,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-16 11:11:00,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058756576] [2022-11-16 11:11:00,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:11:00,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:11:00,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:11:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:11:00,660 INFO L87 Difference]: Start difference. First operand 337 states and 371 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:11:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:00,782 INFO L93 Difference]: Finished difference Result 549 states and 625 transitions. [2022-11-16 11:11:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:11:00,783 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 700 [2022-11-16 11:11:00,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:00,788 INFO L225 Difference]: With dead ends: 549 [2022-11-16 11:11:00,788 INFO L226 Difference]: Without dead ends: 361 [2022-11-16 11:11:00,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1398 GetRequests, 1376 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:11:00,790 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:00,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 128 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:11:00,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-16 11:11:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-11-16 11:11:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 356 states have (on average 1.0926966292134832) internal successors, (389), 356 states have internal predecessors, (389), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:00,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 395 transitions. [2022-11-16 11:11:00,805 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 395 transitions. Word has length 700 [2022-11-16 11:11:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:00,806 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 395 transitions. [2022-11-16 11:11:00,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:11:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 395 transitions. [2022-11-16 11:11:00,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-11-16 11:11:00,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:00,813 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 90, 87, 60, 60, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:00,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:01,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:01,024 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 792981572, now seen corresponding path program 13 times [2022-11-16 11:11:01,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:01,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027006570] [2022-11-16 11:11:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:01,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:11:01,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741722529] [2022-11-16 11:11:01,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:11:01,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:01,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:01,116 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:01,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 11:11:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:01,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:11:01,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 51358 backedges. 13557 proven. 1365 refuted. 0 times theorem prover too weak. 36436 trivial. 0 not checked. [2022-11-16 11:11:02,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:11:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 51358 backedges. 2637 proven. 22495 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2022-11-16 11:11:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:03,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027006570] [2022-11-16 11:11:03,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:11:03,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741722529] [2022-11-16 11:11:03,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741722529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:11:03,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:11:03,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2022-11-16 11:11:03,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589511489] [2022-11-16 11:11:03,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:11:03,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 11:11:03,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:03,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 11:11:03,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:11:03,237 INFO L87 Difference]: Start difference. First operand 361 states and 395 transitions. Second operand has 33 states, 33 states have (on average 3.757575757575758) internal successors, (124), 33 states have internal predecessors, (124), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:11:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:03,383 INFO L93 Difference]: Finished difference Result 600 states and 670 transitions. [2022-11-16 11:11:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:11:03,384 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.757575757575758) internal successors, (124), 33 states have internal predecessors, (124), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 724 [2022-11-16 11:11:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:03,386 INFO L225 Difference]: With dead ends: 600 [2022-11-16 11:11:03,387 INFO L226 Difference]: Without dead ends: 364 [2022-11-16 11:11:03,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1446 GetRequests, 1384 SyntacticMatches, 31 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:11:03,390 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 31 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:03,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 123 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:11:03,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-16 11:11:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2022-11-16 11:11:03,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 359 states have (on average 1.0919220055710306) internal successors, (392), 359 states have internal predecessors, (392), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 398 transitions. [2022-11-16 11:11:03,414 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 398 transitions. Word has length 724 [2022-11-16 11:11:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:03,415 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 398 transitions. [2022-11-16 11:11:03,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.757575757575758) internal successors, (124), 33 states have internal predecessors, (124), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:11:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 398 transitions. [2022-11-16 11:11:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2022-11-16 11:11:03,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:03,422 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 60, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:03,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:03,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:03,628 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash -91827407, now seen corresponding path program 14 times [2022-11-16 11:11:03,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:03,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046784095] [2022-11-16 11:11:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:03,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:03,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:11:03,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912047395] [2022-11-16 11:11:03,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:11:03,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:03,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:03,721 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:03,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 11:11:04,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:11:04,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:11:04,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:11:04,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 52969 backedges. 21850 proven. 484 refuted. 0 times theorem prover too weak. 30635 trivial. 0 not checked. [2022-11-16 11:11:04,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:11:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 52969 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2022-11-16 11:11:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:05,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046784095] [2022-11-16 11:11:05,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:11:05,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912047395] [2022-11-16 11:11:05,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912047395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:11:05,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:11:05,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-16 11:11:05,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558676926] [2022-11-16 11:11:05,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:11:05,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 11:11:05,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:05,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 11:11:05,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:11:05,727 INFO L87 Difference]: Start difference. First operand 364 states and 398 transitions. Second operand has 48 states, 48 states have (on average 2.4791666666666665) internal successors, (119), 48 states have internal predecessors, (119), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:11:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:05,925 INFO L93 Difference]: Finished difference Result 603 states and 691 transitions. [2022-11-16 11:11:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 11:11:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.4791666666666665) internal successors, (119), 48 states have internal predecessors, (119), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 733 [2022-11-16 11:11:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:05,930 INFO L225 Difference]: With dead ends: 603 [2022-11-16 11:11:05,931 INFO L226 Difference]: Without dead ends: 412 [2022-11-16 11:11:05,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1464 GetRequests, 1418 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:11:05,933 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:05,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 78 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:11:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-16 11:11:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2022-11-16 11:11:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 407 states have (on average 1.0810810810810811) internal successors, (440), 407 states have internal predecessors, (440), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:11:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 446 transitions. [2022-11-16 11:11:05,951 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 446 transitions. Word has length 733 [2022-11-16 11:11:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:05,952 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 446 transitions. [2022-11-16 11:11:05,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.4791666666666665) internal successors, (119), 48 states have internal predecessors, (119), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:11:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 446 transitions. [2022-11-16 11:11:05,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2022-11-16 11:11:05,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:05,961 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 60, 46, 46, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:05,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:06,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:06,176 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:06,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1952749311, now seen corresponding path program 15 times [2022-11-16 11:11:06,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240452686] [2022-11-16 11:11:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:06,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:06,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:11:06,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735762572] [2022-11-16 11:11:06,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:11:06,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:06,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:06,302 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:06,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 11:21:23,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2022-11-16 11:21:23,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:21:23,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-16 11:21:23,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 54601 backedges. 21850 proven. 2116 refuted. 0 times theorem prover too weak. 30635 trivial. 0 not checked. [2022-11-16 11:21:24,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 54601 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 52485 trivial. 0 not checked. [2022-11-16 11:21:26,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:21:26,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240452686] [2022-11-16 11:21:26,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:21:26,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735762572] [2022-11-16 11:21:26,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735762572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:26,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:26,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 61 [2022-11-16 11:21:26,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273978546] [2022-11-16 11:21:26,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:26,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 11:21:26,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:21:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 11:21:26,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 11:21:26,616 INFO L87 Difference]: Start difference. First operand 412 states and 446 transitions. Second operand has 61 states, 61 states have (on average 2.4098360655737703) internal successors, (147), 61 states have internal predecessors, (147), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:21:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:26,831 INFO L93 Difference]: Finished difference Result 629 states and 706 transitions. [2022-11-16 11:21:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-16 11:21:26,831 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.4098360655737703) internal successors, (147), 61 states have internal predecessors, (147), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 781 [2022-11-16 11:21:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:26,835 INFO L225 Difference]: With dead ends: 629 [2022-11-16 11:21:26,835 INFO L226 Difference]: Without dead ends: 438 [2022-11-16 11:21:26,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1560 GetRequests, 1466 SyntacticMatches, 35 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 11:21:26,837 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:26,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 178 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:21:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-16 11:21:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2022-11-16 11:21:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 433 states have (on average 1.0762124711316396) internal successors, (466), 433 states have internal predecessors, (466), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:21:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 472 transitions. [2022-11-16 11:21:26,854 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 472 transitions. Word has length 781 [2022-11-16 11:21:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:26,855 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 472 transitions. [2022-11-16 11:21:26,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.4098360655737703) internal successors, (147), 61 states have internal predecessors, (147), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:21:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 472 transitions. [2022-11-16 11:21:26,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2022-11-16 11:21:26,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:26,864 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 60, 59, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:27,077 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forcibly destroying the process [2022-11-16 11:21:27,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 137 [2022-11-16 11:21:27,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:21:27,120 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:21:27,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:27,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1348616601, now seen corresponding path program 16 times [2022-11-16 11:21:27,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:21:27,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652377459] [2022-11-16 11:21:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:27,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:21:27,233 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:21:27,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405608527] [2022-11-16 11:21:27,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:21:27,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:21:27,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:21:27,236 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:21:27,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616845b1-0a01-410a-95b0-f261fc42e4c5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process