./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0 --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 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:11:18,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:11:18,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:11:18,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:11:18,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:11:18,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:11:18,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:11:18,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:11:18,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:11:18,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:11:18,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:11:18,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:11:18,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:11:18,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:11:18,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:11:18,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:11:18,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:11:18,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:11:18,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:11:18,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:11:18,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:11:18,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:11:18,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:11:18,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:11:18,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:11:18,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:11:18,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:11:18,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:11:18,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:11:18,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:11:18,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:11:18,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:11:18,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:11:18,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:11:18,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:11:18,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:11:18,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:11:18,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:11:18,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:11:18,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:11:18,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:11:18,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:11:18,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:11:18,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:11:18,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:11:18,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:11:18,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:11:18,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:11:18,477 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:11:18,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:11:18,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:11:18,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:11:18,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:11:18,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:11:18,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:11:18,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:11:18,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:11:18,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:11:18,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:11:18,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:11:18,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:11:18,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:11:18,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:11:18,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:11:18,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:11:18,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:11:18,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:11:18,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:11:18,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:11:18,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:11:18,483 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:11:18,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:11:18,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:11:18,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:11:18,484 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_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d [2021-11-22 15:11:18,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:11:18,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:11:18,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:11:18,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:11:18,855 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:11:18,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2021-11-22 15:11:18,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data/0d067b007/a4cd5334429d47dbb981598a0127d674/FLAGd8b421fe9 [2021-11-22 15:11:19,541 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:11:19,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2021-11-22 15:11:19,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data/0d067b007/a4cd5334429d47dbb981598a0127d674/FLAGd8b421fe9 [2021-11-22 15:11:19,868 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data/0d067b007/a4cd5334429d47dbb981598a0127d674 [2021-11-22 15:11:19,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:11:19,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:11:19,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:11:19,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:11:19,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:11:19,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:11:19" (1/1) ... [2021-11-22 15:11:19,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26049b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:19, skipping insertion in model container [2021-11-22 15:11:19,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:11:19" (1/1) ... [2021-11-22 15:11:19,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:11:19,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:11:20,112 WARN L230 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_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2021-11-22 15:11:20,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:11:20,149 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:11:20,162 WARN L230 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_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2021-11-22 15:11:20,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:11:20,188 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:11:20,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20 WrapperNode [2021-11-22 15:11:20,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:11:20,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:11:20,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:11:20,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:11:20,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,232 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 103 [2021-11-22 15:11:20,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:11:20,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:11:20,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:11:20,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:11:20,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:11:20,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:11:20,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:11:20,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:11:20,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (1/1) ... [2021-11-22 15:11:20,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:11:20,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:20,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:11:20,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:11:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:11:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:11:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:11:20,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:11:20,423 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:11:20,426 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:11:20,804 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:11:20,811 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:11:20,811 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:11:20,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:20 BoogieIcfgContainer [2021-11-22 15:11:20,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:11:20,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:11:20,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:11:20,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:11:20,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:11:19" (1/3) ... [2021-11-22 15:11:20,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fa84cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:11:20, skipping insertion in model container [2021-11-22 15:11:20,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:20" (2/3) ... [2021-11-22 15:11:20,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fa84cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:11:20, skipping insertion in model container [2021-11-22 15:11:20,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:20" (3/3) ... [2021-11-22 15:11:20,822 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound1.c [2021-11-22 15:11:20,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:11:20,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-22 15:11:20,923 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:11:20,939 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:11:20,939 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-22 15:11:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 42 states have (on average 1.619047619047619) internal successors, (68), 53 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:11:20,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:20,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:20,992 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:20,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:21,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-11-22 15:11:21,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628328231] [2021-11-22 15:11:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:21,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:21,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:21,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628328231] [2021-11-22 15:11:21,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628328231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:21,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:21,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:11:21,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875608463] [2021-11-22 15:11:21,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:21,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:11:21,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:21,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:11:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:11:21,241 INFO L87 Difference]: Start difference. First operand has 54 states, 42 states have (on average 1.619047619047619) internal successors, (68), 53 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:21,299 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2021-11-22 15:11:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:11:21,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:11:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:21,313 INFO L225 Difference]: With dead ends: 105 [2021-11-22 15:11:21,314 INFO L226 Difference]: Without dead ends: 50 [2021-11-22 15:11:21,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:11:21,323 INFO L933 BasicCegarLoop]: 54 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, 54 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 [2021-11-22 15:11:21,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:21,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-22 15:11:21,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-22 15:11:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-11-22 15:11:21,408 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 7 [2021-11-22 15:11:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:21,409 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-11-22 15:11:21,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-11-22 15:11:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:11:21,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:21,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:21,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:11:21,413 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:21,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:21,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-11-22 15:11:21,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:21,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799371661] [2021-11-22 15:11:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:21,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:21,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:21,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799371661] [2021-11-22 15:11:21,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799371661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:21,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:21,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:21,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413281061] [2021-11-22 15:11:21,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:21,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:21,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:21,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:21,627 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:21,768 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-11-22 15:11:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:11:21,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:11:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:21,770 INFO L225 Difference]: With dead ends: 51 [2021-11-22 15:11:21,770 INFO L226 Difference]: Without dead ends: 47 [2021-11-22 15:11:21,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:21,773 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 35 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:21,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 46 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:11:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-22 15:11:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-11-22 15:11:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 45 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-11-22 15:11:21,796 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 7 [2021-11-22 15:11:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:21,796 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-11-22 15:11:21,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-11-22 15:11:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:11:21,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:21,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:21,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:11:21,798 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:21,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-11-22 15:11:21,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:21,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878977943] [2021-11-22 15:11:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:21,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:21,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:21,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422831377] [2021-11-22 15:11:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:21,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:21,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:21,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:21,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:11:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:21,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:11:21,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:21,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:11:21,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:21,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878977943] [2021-11-22 15:11:21,988 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:21,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422831377] [2021-11-22 15:11:21,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422831377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:21,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:21,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:21,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041161407] [2021-11-22 15:11:21,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:21,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:21,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:21,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:21,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:21,992 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:22,130 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-11-22 15:11:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:11:22,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:11:22,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:22,134 INFO L225 Difference]: With dead ends: 88 [2021-11-22 15:11:22,134 INFO L226 Difference]: Without dead ends: 86 [2021-11-22 15:11:22,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:22,136 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:22,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 79 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:11:22,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-22 15:11:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 50. [2021-11-22 15:11:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-11-22 15:11:22,149 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-11-22 15:11:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:22,149 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-11-22 15:11:22,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-11-22 15:11:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:11:22,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:22,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:22,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:22,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:22,371 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:22,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-11-22 15:11:22,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:22,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201967094] [2021-11-22 15:11:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:22,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:22,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:22,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977742271] [2021-11-22 15:11:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:22,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:22,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:22,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:22,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:11:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:22,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:11:22,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:22,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:11:22,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201967094] [2021-11-22 15:11:22,497 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:22,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977742271] [2021-11-22 15:11:22,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977742271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:22,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:22,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:22,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662636371] [2021-11-22 15:11:22,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:22,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:22,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:22,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:22,499 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:27,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:11:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:27,613 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2021-11-22 15:11:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:11:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:11:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:27,615 INFO L225 Difference]: With dead ends: 75 [2021-11-22 15:11:27,615 INFO L226 Difference]: Without dead ends: 71 [2021-11-22 15:11:27,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:27,617 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:27,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-22 15:11:27,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-22 15:11:27,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2021-11-22 15:11:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:27,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-11-22 15:11:27,632 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 11 [2021-11-22 15:11:27,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:27,633 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-11-22 15:11:27,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-11-22 15:11:27,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:11:27,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:27,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:27,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:27,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:27,859 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:27,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2021-11-22 15:11:27,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:27,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280385455] [2021-11-22 15:11:27,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:27,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:27,870 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:27,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477391693] [2021-11-22 15:11:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:27,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:27,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:27,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:27,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:11:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:27,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:11:27,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:28,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:11:28,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280385455] [2021-11-22 15:11:28,055 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477391693] [2021-11-22 15:11:28,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477391693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:28,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:28,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:28,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905627642] [2021-11-22 15:11:28,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:28,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:28,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:28,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:28,058 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:28,174 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-11-22 15:11:28,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:11:28,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:11:28,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:28,176 INFO L225 Difference]: With dead ends: 83 [2021-11-22 15:11:28,176 INFO L226 Difference]: Without dead ends: 59 [2021-11-22 15:11:28,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:28,177 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:28,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 77 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:11:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-22 15:11:28,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-11-22 15:11:28,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.183673469387755) internal successors, (58), 57 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-11-22 15:11:28,187 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 13 [2021-11-22 15:11:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:28,188 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-11-22 15:11:28,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-11-22 15:11:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 15:11:28,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:28,189 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:28,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-22 15:11:28,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:28,411 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash -562887643, now seen corresponding path program 1 times [2021-11-22 15:11:28,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:28,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984830342] [2021-11-22 15:11:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:28,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:28,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:28,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437429090] [2021-11-22 15:11:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:28,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:28,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:28,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:28,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:11:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:28,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:11:28,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:28,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:28,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:28,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984830342] [2021-11-22 15:11:28,757 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:28,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437429090] [2021-11-22 15:11:28,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437429090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:28,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:11:28,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-22 15:11:28,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454952316] [2021-11-22 15:11:28,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:28,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:11:28,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:11:28,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:11:28,761 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:29,134 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2021-11-22 15:11:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:11:29,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-22 15:11:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:29,136 INFO L225 Difference]: With dead ends: 94 [2021-11-22 15:11:29,136 INFO L226 Difference]: Without dead ends: 88 [2021-11-22 15:11:29,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:11:29,138 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 151 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:29,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 77 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:11:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-22 15:11:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 52. [2021-11-22 15:11:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-11-22 15:11:29,149 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 21 [2021-11-22 15:11:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:29,150 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-11-22 15:11:29,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-11-22 15:11:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:11:29,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:29,151 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:29,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:29,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:29,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:29,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:29,383 INFO L85 PathProgramCache]: Analyzing trace with hash 231010472, now seen corresponding path program 1 times [2021-11-22 15:11:29,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:29,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200943042] [2021-11-22 15:11:29,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:29,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:29,392 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:29,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882721418] [2021-11-22 15:11:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:29,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:29,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:29,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:29,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:11:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:29,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:11:29,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:29,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:29,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:29,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200943042] [2021-11-22 15:11:29,696 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:29,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882721418] [2021-11-22 15:11:29,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882721418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:29,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:11:29,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-22 15:11:29,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085240284] [2021-11-22 15:11:29,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:29,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:11:29,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:11:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:11:29,699 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:29,948 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-11-22 15:11:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:11:29,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 15:11:29,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:29,952 INFO L225 Difference]: With dead ends: 88 [2021-11-22 15:11:29,952 INFO L226 Difference]: Without dead ends: 86 [2021-11-22 15:11:29,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:11:29,954 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 64 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:29,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 121 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:11:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-22 15:11:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 58. [2021-11-22 15:11:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 57 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-11-22 15:11:29,966 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 23 [2021-11-22 15:11:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:29,967 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-11-22 15:11:29,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-11-22 15:11:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 15:11:29,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:29,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:30,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:30,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:30,195 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1337079349, now seen corresponding path program 1 times [2021-11-22 15:11:30,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:30,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098173070] [2021-11-22 15:11:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:30,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:30,204 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:30,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469785485] [2021-11-22 15:11:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:30,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:30,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:30,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:11:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:30,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 15:11:30,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:30,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:30,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:30,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098173070] [2021-11-22 15:11:30,761 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:30,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469785485] [2021-11-22 15:11:30,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469785485] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:30,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:11:30,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-22 15:11:30,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607340185] [2021-11-22 15:11:30,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:30,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:11:30,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:30,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:11:30,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:11:30,765 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:31,050 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2021-11-22 15:11:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:11:31,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 15:11:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:31,051 INFO L225 Difference]: With dead ends: 80 [2021-11-22 15:11:31,051 INFO L226 Difference]: Without dead ends: 62 [2021-11-22 15:11:31,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:11:31,053 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 70 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:31,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 63 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:11:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-22 15:11:31,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2021-11-22 15:11:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.069767441860465) internal successors, (46), 45 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-11-22 15:11:31,063 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 25 [2021-11-22 15:11:31,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:31,064 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-11-22 15:11:31,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:31,064 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-11-22 15:11:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:11:31,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:31,065 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:31,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:31,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-22 15:11:31,287 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1554386438, now seen corresponding path program 1 times [2021-11-22 15:11:31,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:31,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220878306] [2021-11-22 15:11:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:31,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:31,296 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:31,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018627348] [2021-11-22 15:11:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:31,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:31,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:31,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:31,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:11:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:31,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 15:11:31,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:31,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:32,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:32,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220878306] [2021-11-22 15:11:32,255 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:32,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018627348] [2021-11-22 15:11:32,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018627348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:32,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:11:32,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-22 15:11:32,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519008990] [2021-11-22 15:11:32,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:32,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:11:32,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:11:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:11:32,259 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:32,660 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-11-22 15:11:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:11:32,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 15:11:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:32,661 INFO L225 Difference]: With dead ends: 62 [2021-11-22 15:11:32,661 INFO L226 Difference]: Without dead ends: 60 [2021-11-22 15:11:32,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:11:32,663 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:32,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 69 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 83 Invalid, 0 Unknown, 19 Unchecked, 0.3s Time] [2021-11-22 15:11:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-22 15:11:32,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-11-22 15:11:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-11-22 15:11:32,674 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 33 [2021-11-22 15:11:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:32,675 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-11-22 15:11:32,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-11-22 15:11:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 15:11:32,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:32,677 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:32,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-22 15:11:32,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:32,891 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:32,892 INFO L85 PathProgramCache]: Analyzing trace with hash 883410237, now seen corresponding path program 1 times [2021-11-22 15:11:32,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:32,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101457795] [2021-11-22 15:11:32,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:32,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:32,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:32,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610886927] [2021-11-22 15:11:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:32,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:32,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:32,900 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:32,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 15:11:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:32,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 15:11:32,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:33,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:33,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:33,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101457795] [2021-11-22 15:11:33,874 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:33,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610886927] [2021-11-22 15:11:33,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610886927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:33,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:11:33,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-22 15:11:33,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79967826] [2021-11-22 15:11:33,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:33,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:11:33,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:33,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:11:33,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:11:33,880 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:34,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:34,055 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-11-22 15:11:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:11:34,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-22 15:11:34,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:34,056 INFO L225 Difference]: With dead ends: 60 [2021-11-22 15:11:34,056 INFO L226 Difference]: Without dead ends: 52 [2021-11-22 15:11:34,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:11:34,057 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:34,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 122 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2021-11-22 15:11:34,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-22 15:11:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-22 15:11:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-11-22 15:11:34,068 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 35 [2021-11-22 15:11:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:34,068 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-11-22 15:11:34,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-11-22 15:11:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 15:11:34,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:34,070 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:34,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:34,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 15:11:34,271 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1510028987, now seen corresponding path program 2 times [2021-11-22 15:11:34,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:34,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732385318] [2021-11-22 15:11:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:34,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:34,281 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:34,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967936967] [2021-11-22 15:11:34,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:11:34,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:34,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:34,283 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:34,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 15:11:34,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:11:34,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:11:34,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-22 15:11:34,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:34,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:35,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:35,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732385318] [2021-11-22 15:11:35,159 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:35,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967936967] [2021-11-22 15:11:35,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967936967] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:35,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:11:35,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-22 15:11:35,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949598166] [2021-11-22 15:11:35,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:35,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:11:35,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:35,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:11:35,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:11:35,163 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:35,938 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2021-11-22 15:11:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 15:11:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-22 15:11:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:35,940 INFO L225 Difference]: With dead ends: 127 [2021-11-22 15:11:35,940 INFO L226 Difference]: Without dead ends: 125 [2021-11-22 15:11:35,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:11:35,941 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 225 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:35,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 101 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:11:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-22 15:11:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 94. [2021-11-22 15:11:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 91 states have (on average 1.065934065934066) internal successors, (97), 93 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2021-11-22 15:11:35,975 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 35 [2021-11-22 15:11:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:35,976 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2021-11-22 15:11:35,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2021-11-22 15:11:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 15:11:35,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:35,983 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:36,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:36,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-22 15:11:36,207 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1785723981, now seen corresponding path program 2 times [2021-11-22 15:11:36,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:36,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331473386] [2021-11-22 15:11:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:36,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:36,213 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:36,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889037890] [2021-11-22 15:11:36,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:11:36,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:36,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:36,215 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:36,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 15:11:36,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:11:36,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:11:36,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-22 15:11:36,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:37,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:11:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:37,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:37,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331473386] [2021-11-22 15:11:37,590 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:37,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889037890] [2021-11-22 15:11:37,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889037890] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:11:37,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:11:37,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-22 15:11:37,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234357856] [2021-11-22 15:11:37,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:11:37,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:11:37,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:37,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:11:37,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:11:37,593 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:39,193 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2021-11-22 15:11:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:11:39,194 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-22 15:11:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:39,195 INFO L225 Difference]: With dead ends: 118 [2021-11-22 15:11:39,195 INFO L226 Difference]: Without dead ends: 116 [2021-11-22 15:11:39,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:11:39,197 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 264 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:39,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 104 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 15:11:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-22 15:11:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2021-11-22 15:11:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 101 states have (on average 1.0693069306930694) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2021-11-22 15:11:39,239 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 45 [2021-11-22 15:11:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:39,239 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2021-11-22 15:11:39,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2021-11-22 15:11:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-22 15:11:39,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:39,241 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:39,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:39,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:39,445 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:11:39,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:39,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1906014512, now seen corresponding path program 2 times [2021-11-22 15:11:39,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:39,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011553428] [2021-11-22 15:11:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:39,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:39,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:39,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395503640] [2021-11-22 15:11:39,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:11:39,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:39,479 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:39,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 15:11:39,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 15:11:39,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:11:39,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-22 15:11:39,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-22 15:11:49,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:11:49,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:49,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011553428] [2021-11-22 15:11:49,363 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:49,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395503640] [2021-11-22 15:11:49,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395503640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:49,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:49,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 15:11:49,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834231048] [2021-11-22 15:11:49,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:49,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:11:49,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:49,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:11:49,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=141, Unknown=1, NotChecked=0, Total=182 [2021-11-22 15:11:49,365 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:57,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:12:00,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:12:01,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:12:03,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:12:05,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:12:07,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:12:10,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:12:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:11,898 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2021-11-22 15:12:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:12:11,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-22 15:12:11,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:11,899 INFO L225 Difference]: With dead ends: 104 [2021-11-22 15:12:11,899 INFO L226 Difference]: Without dead ends: 94 [2021-11-22 15:12:11,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=110, Invalid=269, Unknown=1, NotChecked=0, Total=380 [2021-11-22 15:12:11,901 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 64 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 54 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:11,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 21 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 87 Invalid, 3 Unknown, 0 Unchecked, 18.1s Time] [2021-11-22 15:12:11,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-22 15:12:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-11-22 15:12:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:11,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-11-22 15:12:11,925 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 47 [2021-11-22 15:12:11,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:11,925 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-11-22 15:12:11,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-11-22 15:12:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 15:12:11,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:11,927 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:11,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:12,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-22 15:12:12,143 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:12:12,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:12,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1971107993, now seen corresponding path program 3 times [2021-11-22 15:12:12,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:12:12,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592307126] [2021-11-22 15:12:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:12,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:12:12,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:12:12,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836919765] [2021-11-22 15:12:12,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:12:12,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:12:12,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:12,161 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:12:12,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 15:12:12,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-22 15:12:12,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:12:12,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 15:12:12,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:34,963 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-22 15:12:34,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:12:34,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592307126] [2021-11-22 15:12:34,963 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:12:34,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836919765] [2021-11-22 15:12:34,964 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-22 15:12:34,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:34,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-22 15:12:34,964 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-22 15:12:34,964 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-22 15:12:34,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-22 15:12:34,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-11-22 15:12:34,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-11-22 15:12:34,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-11-22 15:12:34,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-11-22 15:12:34,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-11-22 15:12:34,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-11-22 15:12:34,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-11-22 15:12:34,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-11-22 15:12:34,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-11-22 15:12:34,976 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-11-22 15:12:34,976 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-11-22 15:12:34,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:35,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:12:35,183 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:35,186 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:12:35,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:12:35 BoogieIcfgContainer [2021-11-22 15:12:35,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:12:35,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:12:35,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:12:35,216 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:12:35,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:20" (3/4) ... [2021-11-22 15:12:35,220 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 15:12:35,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:12:35,221 INFO L158 Benchmark]: Toolchain (without parser) took 75347.67ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 65.3MB in the beginning and 93.9MB in the end (delta: -28.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:12:35,221 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:12:35,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.59ms. Allocated memory is still 98.6MB. Free memory was 65.1MB in the beginning and 72.5MB in the end (delta: -7.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:12:35,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.41ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 70.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:12:35,223 INFO L158 Benchmark]: Boogie Preprocessor took 27.85ms. Allocated memory is still 98.6MB. Free memory was 70.7MB in the beginning and 69.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:12:35,223 INFO L158 Benchmark]: RCFGBuilder took 552.03ms. Allocated memory is still 98.6MB. Free memory was 69.4MB in the beginning and 57.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:12:35,224 INFO L158 Benchmark]: TraceAbstraction took 74399.79ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 57.6MB in the beginning and 95.0MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:12:35,224 INFO L158 Benchmark]: Witness Printer took 4.96ms. Allocated memory is still 125.8MB. Free memory was 95.0MB in the beginning and 93.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:12:35,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.59ms. Allocated memory is still 98.6MB. Free memory was 65.1MB in the beginning and 72.5MB in the end (delta: -7.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.41ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 70.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.85ms. Allocated memory is still 98.6MB. Free memory was 70.7MB in the beginning and 69.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 552.03ms. Allocated memory is still 98.6MB. Free memory was 69.4MB in the beginning and 57.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 74399.79ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 57.6MB in the beginning and 95.0MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.96ms. Allocated memory is still 125.8MB. Free memory was 95.0MB in the beginning and 93.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] short a; [L24] long long n, x, y, z; [L25] a = __VERIFIER_nondet_ushort() [L26] CALL assume_abort_if_not(a>=0 && a<=1) [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(a>=0 && a<=1) [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(z == 6 * n + 6) [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND FALSE !(!(cond)) [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L36] CALL __VERIFIER_assert(x == n * n * n) [L15] COND FALSE !(!(cond)) [L36] RET __VERIFIER_assert(x == n * n * n) [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L15] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L15] COND FALSE !(!(cond)) [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(z == 6 * n + 6) [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND FALSE !(!(cond)) [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L36] CALL __VERIFIER_assert(x == n * n * n) [L15] COND FALSE !(!(cond)) [L36] RET __VERIFIER_assert(x == n * n * n) [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L15] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L15] COND FALSE !(!(cond)) [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(z == 6 * n + 6) [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND FALSE !(!(cond)) [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L36] CALL __VERIFIER_assert(x == n * n * n) [L15] COND FALSE !(!(cond)) [L36] RET __VERIFIER_assert(x == n * n * n) [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L15] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L15] COND FALSE !(!(cond)) [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(z == 6 * n + 6) [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND FALSE !(!(cond)) [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L36] CALL __VERIFIER_assert(x == n * n * n) [L15] COND FALSE !(!(cond)) [L36] RET __VERIFIER_assert(x == n * n * n) [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L15] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L15] COND FALSE !(!(cond)) [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(z == 6 * n + 6) [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND FALSE !(!(cond)) [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L36] CALL __VERIFIER_assert(x == n * n * n) [L15] COND FALSE !(!(cond)) [L36] RET __VERIFIER_assert(x == n * n * n) [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L15] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L15] COND FALSE !(!(cond)) [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(z == 6 * n + 6) [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND FALSE !(!(cond)) [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L36] CALL __VERIFIER_assert(x == n * n * n) [L15] COND FALSE !(!(cond)) [L36] RET __VERIFIER_assert(x == n * n * n) [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L15] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L15] COND FALSE !(!(cond)) [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(z == 6 * n + 6) [L35] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND FALSE !(!(cond)) [L35] RET __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L36] CALL __VERIFIER_assert(x == n * n * n) [L15] COND FALSE !(!(cond)) [L36] RET __VERIFIER_assert(x == n * n * n) [L37] CALL __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L15] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(y*z - 18*x - 12*y + 2*z - 6 == 0) [L38] CALL __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L15] COND FALSE !(!(cond)) [L38] RET __VERIFIER_assert((z*z) - 12*y - 6*z + 12 == 0) [L39] COND TRUE !(n <= a) [L48] CALL __VERIFIER_assert(z == 6*n + 6) [L15] COND FALSE !(!(cond)) [L48] RET __VERIFIER_assert(z == 6*n + 6) [L49] CALL __VERIFIER_assert(6*a*x - x*z + 12*x == 0) [L15] COND TRUE !(cond) [L17] reach_error() - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 74.3s, OverallIterations: 14, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 32.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 1001 SdHoareTripleChecker+Valid, 25.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1001 mSDsluCounter, 1017 SdHoareTripleChecker+Invalid, 25.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 37 IncrementalHoareTripleChecker+Unchecked, 672 mSDsCounter, 309 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1156 IncrementalHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 309 mSolverCounterUnsat, 345 mSDtfsCounter, 1156 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 556 GetRequests, 424 SyntacticMatches, 8 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=12, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 174 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 37.8s InterpolantComputationTime, 404 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 508 ConstructedInterpolants, 24 QuantifiedInterpolants, 7764 SizeOfPredicates, 60 NumberOfNonLiveVariables, 1154 ConjunctsInSsa, 221 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 36/240 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0 --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 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:12:37,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:12:37,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:12:37,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:12:37,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:12:37,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:12:37,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:12:37,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:12:37,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:12:37,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:12:37,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:12:37,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:12:37,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:12:37,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:12:37,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:12:37,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:12:37,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:12:37,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:12:37,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:12:37,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:12:37,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:12:37,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:12:37,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:12:37,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:12:37,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:12:37,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:12:37,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:12:37,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:12:37,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:12:37,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:12:37,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:12:37,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:12:37,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:12:37,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:12:37,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:12:37,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:12:37,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:12:37,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:12:37,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:12:37,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:12:37,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:12:37,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 15:12:37,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:12:37,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:12:37,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:12:37,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:12:37,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:12:37,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:12:37,719 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:12:37,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:12:37,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:12:37,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:12:37,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:12:37,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:12:37,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:12:37,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:12:37,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:12:37,721 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 15:12:37,721 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 15:12:37,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:12:37,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:12:37,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:12:37,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:12:37,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:12:37,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:12:37,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:12:37,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:12:37,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:12:37,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:12:37,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:12:37,724 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 15:12:37,724 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 15:12:37,724 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:12:37,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:12:37,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:12:37,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:12:37,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 15:12:37,725 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d [2021-11-22 15:12:38,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:12:38,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:12:38,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:12:38,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:12:38,185 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:12:38,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2021-11-22 15:12:38,263 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data/3197d15eb/610ea89b60594eb38a74b6a01f8af3f7/FLAG0e0afb6b8 [2021-11-22 15:12:38,817 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:12:38,827 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2021-11-22 15:12:38,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data/3197d15eb/610ea89b60594eb38a74b6a01f8af3f7/FLAG0e0afb6b8 [2021-11-22 15:12:39,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/data/3197d15eb/610ea89b60594eb38a74b6a01f8af3f7 [2021-11-22 15:12:39,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:12:39,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:12:39,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:12:39,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:12:39,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:12:39,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6daa8c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39, skipping insertion in model container [2021-11-22 15:12:39,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:12:39,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:12:39,449 WARN L230 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_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2021-11-22 15:12:39,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:12:39,530 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:12:39,553 WARN L230 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_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2021-11-22 15:12:39,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:12:39,618 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:12:39,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39 WrapperNode [2021-11-22 15:12:39,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:12:39,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:12:39,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:12:39,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:12:39,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,696 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 103 [2021-11-22 15:12:39,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:12:39,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:12:39,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:12:39,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:12:39,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:12:39,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:12:39,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:12:39,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:12:39,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (1/1) ... [2021-11-22 15:12:39,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:12:39,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:12:39,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:12:39,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:12:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:12:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 15:12:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:12:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:12:39,941 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:12:39,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:12:41,962 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:12:41,970 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:12:41,970 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:12:41,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:12:41 BoogieIcfgContainer [2021-11-22 15:12:41,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:12:41,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:12:41,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:12:41,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:12:41,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:12:39" (1/3) ... [2021-11-22 15:12:41,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e5e76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:12:41, skipping insertion in model container [2021-11-22 15:12:41,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:12:39" (2/3) ... [2021-11-22 15:12:41,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e5e76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:12:41, skipping insertion in model container [2021-11-22 15:12:41,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:12:41" (3/3) ... [2021-11-22 15:12:41,983 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound1.c [2021-11-22 15:12:41,990 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:12:41,990 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-22 15:12:42,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:12:42,091 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:12:42,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-22 15:12:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 42 states have (on average 1.619047619047619) internal successors, (68), 53 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:12:42,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:42,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:42,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:12:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-11-22 15:12:42,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:12:42,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918986781] [2021-11-22 15:12:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:42,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:12:42,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:12:42,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:12:42,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 15:12:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:42,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 15:12:42,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:42,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:42,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:12:42,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918986781] [2021-11-22 15:12:42,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918986781] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:42,264 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:42,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 15:12:42,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677962663] [2021-11-22 15:12:42,267 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:42,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:12:42,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:12:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:12:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:12:42,306 INFO L87 Difference]: Start difference. First operand has 54 states, 42 states have (on average 1.619047619047619) internal successors, (68), 53 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:42,327 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2021-11-22 15:12:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:12:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:12:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:42,337 INFO L225 Difference]: With dead ends: 105 [2021-11-22 15:12:42,337 INFO L226 Difference]: Without dead ends: 50 [2021-11-22 15:12:42,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:12:42,344 INFO L933 BasicCegarLoop]: 54 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, 54 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 [2021-11-22 15:12:42,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:12:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-22 15:12:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-22 15:12:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-11-22 15:12:42,381 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 7 [2021-11-22 15:12:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:42,382 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-11-22 15:12:42,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-11-22 15:12:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:12:42,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:42,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:42,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:42,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:12:42,595 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:12:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-11-22 15:12:42,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:12:42,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858972568] [2021-11-22 15:12:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:42,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:12:42,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:12:42,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:12:42,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 15:12:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:42,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:12:42,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:42,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:42,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:12:42,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858972568] [2021-11-22 15:12:42,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858972568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:42,858 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:42,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:12:42,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977521719] [2021-11-22 15:12:42,859 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:42,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:12:42,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:12:42,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:12:42,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:12:42,861 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:45,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:12:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:46,553 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2021-11-22 15:12:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:12:46,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:12:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:46,564 INFO L225 Difference]: With dead ends: 92 [2021-11-22 15:12:46,565 INFO L226 Difference]: Without dead ends: 88 [2021-11-22 15:12:46,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:12:46,567 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 104 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:46,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 74 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-22 15:12:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-22 15:12:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 46. [2021-11-22 15:12:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 45 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-11-22 15:12:46,580 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 7 [2021-11-22 15:12:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:46,581 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-11-22 15:12:46,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-11-22 15:12:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:12:46,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:46,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:46,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:46,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:12:46,793 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:12:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-11-22 15:12:46,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:12:46,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425645571] [2021-11-22 15:12:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:46,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:12:46,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:12:46,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:12:46,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 15:12:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:46,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:12:46,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:47,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:48,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:12:48,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425645571] [2021-11-22 15:12:48,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425645571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:48,526 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:48,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:12:48,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168281812] [2021-11-22 15:12:48,526 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:48,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:12:48,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:12:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:12:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:12:48,528 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:12:51,725 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-11-22 15:12:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:12:51,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:12:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:12:51,747 INFO L225 Difference]: With dead ends: 88 [2021-11-22 15:12:51,747 INFO L226 Difference]: Without dead ends: 86 [2021-11-22 15:12:51,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:12:51,750 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:12:51,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 125 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-22 15:12:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-22 15:12:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 50. [2021-11-22 15:12:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-11-22 15:12:51,767 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-11-22 15:12:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:12:51,768 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-11-22 15:12:51,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:12:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-11-22 15:12:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:12:51,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:12:51,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:12:51,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:12:51,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:12:51,983 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:12:51,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:12:51,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-11-22 15:12:51,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:12:51,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527632369] [2021-11-22 15:12:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:12:51,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:12:51,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:12:51,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:12:51,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 15:12:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:12:52,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:12:52,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:12:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:52,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:12:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:12:55,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:12:55,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527632369] [2021-11-22 15:12:55,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527632369] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:12:55,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:12:55,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:12:55,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593695843] [2021-11-22 15:12:55,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:12:55,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:12:55,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:12:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:12:55,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:12:55,719 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:00,325 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-11-22 15:13:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:13:00,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:13:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:00,351 INFO L225 Difference]: With dead ends: 86 [2021-11-22 15:13:00,351 INFO L226 Difference]: Without dead ends: 82 [2021-11-22 15:13:00,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:13:00,353 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 59 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:00,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 83 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-22 15:13:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-22 15:13:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2021-11-22 15:13:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-11-22 15:13:00,367 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 11 [2021-11-22 15:13:00,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:00,367 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-11-22 15:13:00,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-11-22 15:13:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:13:00,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:00,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:00,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:13:00,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:13:00,569 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:13:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2021-11-22 15:13:00,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:13:00,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35586076] [2021-11-22 15:13:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:00,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:13:00,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:13:00,572 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:13:00,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 15:13:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:00,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:13:00,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:00,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:13:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:03,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:13:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35586076] [2021-11-22 15:13:03,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35586076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:13:03,425 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:13:03,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:13:03,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230526473] [2021-11-22 15:13:03,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:13:03,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:13:03,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:13:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:13:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:13:03,428 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:14,107 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2021-11-22 15:13:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:13:14,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:13:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:14,110 INFO L225 Difference]: With dead ends: 120 [2021-11-22 15:13:14,110 INFO L226 Difference]: Without dead ends: 94 [2021-11-22 15:13:14,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:13:14,112 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 46 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:14,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 119 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2021-11-22 15:13:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-22 15:13:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2021-11-22 15:13:14,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 79 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2021-11-22 15:13:14,137 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 13 [2021-11-22 15:13:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:14,137 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2021-11-22 15:13:14,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2021-11-22 15:13:14,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 15:13:14,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:14,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:14,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-22 15:13:14,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:13:14,367 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:13:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash -562887643, now seen corresponding path program 1 times [2021-11-22 15:13:14,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:13:14,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795743951] [2021-11-22 15:13:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:14,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:13:14,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:13:14,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:13:14,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 15:13:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:14,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:13:14,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:15,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:13:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:20,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:13:20,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795743951] [2021-11-22 15:13:20,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795743951] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:13:20,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:13:20,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-22 15:13:20,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196125937] [2021-11-22 15:13:20,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:13:20,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:13:20,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:13:20,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:13:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:13:20,495 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:25,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:27,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:32,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:34,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:37,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:40,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:42,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:48,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:50,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:13:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:13:57,016 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2021-11-22 15:13:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:13:57,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-22 15:13:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:13:57,039 INFO L225 Difference]: With dead ends: 174 [2021-11-22 15:13:57,039 INFO L226 Difference]: Without dead ends: 166 [2021-11-22 15:13:57,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:13:57,041 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 132 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 96 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:13:57,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 172 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 147 Invalid, 9 Unknown, 0 Unchecked, 30.1s Time] [2021-11-22 15:13:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-22 15:13:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 94. [2021-11-22 15:13:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 85 states have (on average 1.2) internal successors, (102), 93 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2021-11-22 15:13:57,069 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 21 [2021-11-22 15:13:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:13:57,070 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2021-11-22 15:13:57,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:13:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2021-11-22 15:13:57,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:13:57,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:13:57,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:13:57,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-22 15:13:57,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:13:57,287 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:13:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:13:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash 231010472, now seen corresponding path program 1 times [2021-11-22 15:13:57,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:13:57,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272937322] [2021-11-22 15:13:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:13:57,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:13:57,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:13:57,290 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:13:57,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 15:13:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:13:57,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:13:57,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:13:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:13:58,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:14:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:08,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:14:08,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272937322] [2021-11-22 15:14:08,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272937322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:14:08,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:14:08,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-22 15:14:08,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644239963] [2021-11-22 15:14:08,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:14:08,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:14:08,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:14:08,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:14:08,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:14:08,432 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:14,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:14:14,825 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2021-11-22 15:14:14,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:14:14,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 15:14:14,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:14:14,827 INFO L225 Difference]: With dead ends: 102 [2021-11-22 15:14:14,827 INFO L226 Difference]: Without dead ends: 100 [2021-11-22 15:14:14,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:14:14,829 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 48 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:14:14,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 153 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-22 15:14:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-22 15:14:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2021-11-22 15:14:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 85 states have (on average 1.188235294117647) internal successors, (101), 93 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2021-11-22 15:14:14,851 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 23 [2021-11-22 15:14:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:14:14,852 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2021-11-22 15:14:14,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:14:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2021-11-22 15:14:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:14:14,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:14:14,854 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:14:14,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-22 15:14:15,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:14:15,071 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:14:15,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:14:15,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1554386438, now seen corresponding path program 1 times [2021-11-22 15:14:15,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:14:15,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887082109] [2021-11-22 15:14:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:14:15,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:14:15,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:14:15,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:14:15,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-22 15:14:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:14:15,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 15:14:15,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:14:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:14:17,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:15:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:08,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:15:08,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887082109] [2021-11-22 15:15:08,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887082109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:15:08,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:15:08,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-22 15:15:08,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998565227] [2021-11-22 15:15:08,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:15:08,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:15:08,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:15:08,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:15:08,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:15:08,059 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:14,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:15:16,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:15:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:21,685 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2021-11-22 15:15:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:15:21,687 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 15:15:21,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:21,688 INFO L225 Difference]: With dead ends: 100 [2021-11-22 15:15:21,688 INFO L226 Difference]: Without dead ends: 98 [2021-11-22 15:15:21,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2021-11-22 15:15:21,690 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 163 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 72 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:21,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 126 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 154 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2021-11-22 15:15:21,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-22 15:15:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-11-22 15:15:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 93 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2021-11-22 15:15:21,719 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 33 [2021-11-22 15:15:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:21,720 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2021-11-22 15:15:21,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2021-11-22 15:15:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 15:15:21,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:21,722 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:21,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:15:21,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:15:21,939 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:15:21,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash 883410237, now seen corresponding path program 1 times [2021-11-22 15:15:21,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:15:21,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409865414] [2021-11-22 15:15:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:15:21,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:15:21,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:15:21,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:15:21,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-22 15:15:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:15:22,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:15:22,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:15:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:24,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:15:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:33,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:15:33,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409865414] [2021-11-22 15:15:33,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409865414] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:15:33,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:15:33,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-22 15:15:33,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572667083] [2021-11-22 15:15:33,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:15:33,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:15:33,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:15:33,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:15:33,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:15:33,140 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:40,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:15:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:15:44,918 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2021-11-22 15:15:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 15:15:44,932 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-22 15:15:44,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:15:44,933 INFO L225 Difference]: With dead ends: 124 [2021-11-22 15:15:44,934 INFO L226 Difference]: Without dead ends: 122 [2021-11-22 15:15:44,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2021-11-22 15:15:44,935 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 339 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 148 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:15:44,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 195 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 197 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-22 15:15:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-22 15:15:44,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 100. [2021-11-22 15:15:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 91 states have (on average 1.164835164835165) internal successors, (106), 99 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2021-11-22 15:15:44,955 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 35 [2021-11-22 15:15:44,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:15:44,955 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2021-11-22 15:15:44,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:15:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2021-11-22 15:15:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 15:15:44,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:15:44,957 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-22 15:15:44,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:15:45,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:15:45,171 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:15:45,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:15:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1510028987, now seen corresponding path program 2 times [2021-11-22 15:15:45,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:15:45,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692977644] [2021-11-22 15:15:45,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:15:45,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:15:45,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:15:45,174 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:15:45,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-22 15:15:45,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:15:45,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:15:45,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:15:45,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:15:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:15:46,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:16:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:16:05,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:16:05,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692977644] [2021-11-22 15:16:05,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692977644] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:16:05,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:16:05,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-22 15:16:05,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131708671] [2021-11-22 15:16:05,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:16:05,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:16:05,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:16:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:16:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:16:05,530 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:16:13,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:16:18,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:16:21,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:16:23,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:16:26,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:16:30,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:16:33,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:16:38,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:16:41,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:16:44,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:17:01,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:17:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:17:02,742 INFO L93 Difference]: Finished difference Result 234 states and 238 transitions. [2021-11-22 15:17:02,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 15:17:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-22 15:17:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:17:02,772 INFO L225 Difference]: With dead ends: 234 [2021-11-22 15:17:02,772 INFO L226 Difference]: Without dead ends: 204 [2021-11-22 15:17:02,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:17:02,774 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 235 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 172 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:17:02,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 209 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 250 Invalid, 8 Unknown, 0 Unchecked, 39.4s Time] [2021-11-22 15:17:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-22 15:17:02,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 116. [2021-11-22 15:17:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 107 states have (on average 1.158878504672897) internal successors, (124), 115 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2021-11-22 15:17:02,794 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 35 [2021-11-22 15:17:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:17:02,794 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2021-11-22 15:17:02,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:02,794 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2021-11-22 15:17:02,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 15:17:02,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:17:02,796 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:17:02,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:17:03,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:17:03,002 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 15:17:03,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:17:03,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1785723981, now seen corresponding path program 2 times [2021-11-22 15:17:03,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:17:03,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913455272] [2021-11-22 15:17:03,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:17:03,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:17:03,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:17:03,005 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:17:03,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ee8b7fe-a4a0-4b52-951e-0a9d9af8f183/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-22 15:17:03,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:17:03,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:17:03,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 15:17:03,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:17:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:17:15,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:17:37,048 WARN L838 $PredicateComparison]: unable to prove that (or (= (_ bv0 64) (bvadd (bvmul |c_ULTIMATE.start_main_~x~0#1| ((_ sign_extend 32) (bvmul ((_ sign_extend 16) |c_ULTIMATE.start_main_~a~0#1|) (_ bv6 32)))) (bvneg (bvmul |c_ULTIMATE.start_main_~x~0#1| (bvadd (bvmul (_ bv6 64) |c_ULTIMATE.start_main_~n~0#1|) (_ bv6 64)))) (bvmul (_ bv12 64) |c_ULTIMATE.start_main_~x~0#1|))) (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (_ bv0 64) (bvadd (bvmul (_ bv72 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (bvneg (bvadd (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64)))) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (_ bv48 64)))))) is different from false [2021-11-22 15:17:58,292 WARN L838 $PredicateComparison]: unable to prove that (or (= (_ bv0 64) (let ((.cse0 (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|))) (bvadd (bvneg (bvmul .cse0 (bvadd (bvmul (_ bv6 64) |c_ULTIMATE.start_main_~n~0#1|) (_ bv6 64)))) (bvmul ((_ sign_extend 32) (bvmul ((_ sign_extend 16) |c_ULTIMATE.start_main_~a~0#1|) (_ bv6 32))) |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) (bvmul (_ bv12 64) .cse0)))) (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (_ bv0 64) (bvadd (bvmul (_ bv72 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (bvneg (bvadd (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64)))) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (_ bv48 64)))))) is different from false [2021-11-22 15:18:44,603 WARN L227 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:19:59,011 WARN L227 SmtUtils]: Spent 7.22s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:21:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 13 times theorem prover too weak. 0 trivial. 16 not checked. [2021-11-22 15:21:04,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:04,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913455272] [2021-11-22 15:21:04,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913455272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:21:04,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:21:04,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-11-22 15:21:04,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178850664] [2021-11-22 15:21:04,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:21:04,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-22 15:21:04,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:04,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-22 15:21:04,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=427, Unknown=7, NotChecked=90, Total=650 [2021-11-22 15:21:04,537 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:28,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:21:30,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:21:43,811 WARN L227 SmtUtils]: Spent 11.52s on a formula simplification. DAG size of input: 58 DAG size of output: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:21:46,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:22:02,647 WARN L227 SmtUtils]: Spent 15.66s on a formula simplification. DAG size of input: 55 DAG size of output: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:22:29,307 WARN L227 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 44 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:22:31,387 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ sign_extend 16) |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse5 (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (.cse1 ((_ sign_extend 32) (bvmul .cse4 (_ bv6 32))))) (let ((.cse2 (bvmul .cse1 |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (.cse3 (bvmul (_ bv12 64) .cse5))) (and (or (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (bvadd (bvmul (_ bv144 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (_ bv156 64) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvneg (bvadd (_ bv72 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64))))) (_ bv0 64)))) (= (_ bv0 64) (bvadd (bvneg (bvmul (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~n~0#1| (_ bv1 64)))) (bvmul .cse0 .cse0 .cse0)) (bvadd (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv6 64)) (_ bv12 64)))) (bvmul (_ bv3 64) (bvmul .cse1 |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) .cse2 (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvmul (_ bv36 64) |c_ULTIMATE.start_main_~n~0#1|) (bvmul (_ bv3 64) (bvmul .cse1 |c_ULTIMATE.start_main_~n~0#1|)) .cse3 .cse1 (_ bv12 64))) (not (bvsle |c_ULTIMATE.start_main_~n~0#1| ((_ sign_extend 32) .cse4)))) (or (= (_ bv0 64) (bvadd (bvneg (bvmul .cse5 (bvadd (bvmul (_ bv6 64) |c_ULTIMATE.start_main_~n~0#1|) (_ bv6 64)))) .cse2 .cse3)) (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (_ bv0 64) (bvadd (bvmul (_ bv72 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (bvneg (bvadd (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64)))) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (_ bv48 64)))))))))) is different from false [2021-11-22 15:23:09,752 WARN L227 SmtUtils]: Spent 16.32s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:23:11,841 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ sign_extend 16) |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse3 ((_ sign_extend 32) (bvmul .cse4 (_ bv6 32))))) (let ((.cse0 (= (_ bv0 64) (bvadd (bvmul |c_ULTIMATE.start_main_~x~0#1| .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~x~0#1| (bvadd (bvmul (_ bv6 64) |c_ULTIMATE.start_main_~n~0#1|) (_ bv6 64)))) (bvmul (_ bv12 64) |c_ULTIMATE.start_main_~x~0#1|)))) (.cse1 (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (_ bv0 64) (bvadd (bvmul (_ bv72 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (bvneg (bvadd (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64)))) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (_ bv48 64))))))) (and (or .cse0 .cse1) (or (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (bvadd (bvmul (_ bv144 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (_ bv156 64) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvneg (bvadd (_ bv72 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64))))) (_ bv0 64)))) (= (_ bv0 64) (bvadd (bvneg (bvmul (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~n~0#1| (_ bv1 64)))) (bvmul .cse2 .cse2 .cse2)) (bvadd (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv6 64)) (_ bv12 64)))) (bvmul (_ bv3 64) (bvmul .cse3 |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvmul .cse3 |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvmul (_ bv36 64) |c_ULTIMATE.start_main_~n~0#1|) (bvmul (_ bv3 64) (bvmul .cse3 |c_ULTIMATE.start_main_~n~0#1|)) (bvmul (_ bv12 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) .cse3 (_ bv12 64))) (not (bvsle |c_ULTIMATE.start_main_~n~0#1| ((_ sign_extend 32) .cse4)))) (or (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) .cse0 .cse1))))) is different from false [2021-11-22 15:23:13,925 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ sign_extend 16) |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse3 ((_ sign_extend 32) (bvmul .cse4 (_ bv6 32))))) (let ((.cse0 (= (_ bv0 64) (bvadd (bvmul |c_ULTIMATE.start_main_~x~0#1| .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~x~0#1| (bvadd (bvmul (_ bv6 64) |c_ULTIMATE.start_main_~n~0#1|) (_ bv6 64)))) (bvmul (_ bv12 64) |c_ULTIMATE.start_main_~x~0#1|)))) (.cse1 (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (_ bv0 64) (bvadd (bvmul (_ bv72 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (bvneg (bvadd (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64)))) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (_ bv48 64))))))) (and (or .cse0 .cse1) (or (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (bvadd (bvmul (_ bv144 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (_ bv156 64) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvneg (bvadd (_ bv72 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64))))) (_ bv0 64)))) (= (_ bv0 64) (bvadd (bvneg (bvmul (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~n~0#1| (_ bv1 64)))) (bvmul .cse2 .cse2 .cse2)) (bvadd (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv6 64)) (_ bv12 64)))) (bvmul (_ bv3 64) (bvmul .cse3 |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvmul .cse3 |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvmul (_ bv36 64) |c_ULTIMATE.start_main_~n~0#1|) (bvmul (_ bv3 64) (bvmul .cse3 |c_ULTIMATE.start_main_~n~0#1|)) (bvmul (_ bv12 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) .cse3 (_ bv12 64))) (not (bvsle |c_ULTIMATE.start_main_~n~0#1| ((_ sign_extend 32) .cse4)))) (or (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) .cse0 .cse1))))) is different from true [2021-11-22 15:23:16,018 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ sign_extend 16) |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse0 ((_ sign_extend 32) (bvmul .cse2 (_ bv6 32))))) (and (or (= (_ bv0 64) (bvadd (bvmul |c_ULTIMATE.start_main_~x~0#1| .cse0) (bvneg (bvmul |c_ULTIMATE.start_main_~x~0#1| (bvadd (bvmul (_ bv6 64) |c_ULTIMATE.start_main_~n~0#1|) (_ bv6 64)))) (bvmul (_ bv12 64) |c_ULTIMATE.start_main_~x~0#1|))) (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (_ bv0 64) (bvadd (bvmul (_ bv72 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (bvneg (bvadd (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64)))) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (_ bv48 64)))))) (or (forall ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 64))) (not (= (bvadd (bvmul (_ bv144 64) |c_ULTIMATE.start_main_~n~0#1|) (bvneg (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv12 64))) (_ bv156 64) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvneg (bvadd (_ bv72 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv36 64))))) (_ bv0 64)))) (= (_ bv0 64) (bvadd (bvneg (bvmul (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~n~0#1| (_ bv1 64)))) (bvmul .cse1 .cse1 .cse1)) (bvadd (bvmul |c_ULTIMATE.start_main_~n~0#1| (_ bv6 64)) (_ bv12 64)))) (bvmul (_ bv3 64) (bvmul .cse0 |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvmul .cse0 |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|) (bvmul (_ bv36 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) (bvmul (_ bv36 64) |c_ULTIMATE.start_main_~n~0#1|) (bvmul (_ bv3 64) (bvmul .cse0 |c_ULTIMATE.start_main_~n~0#1|)) (bvmul (_ bv12 64) (bvmul |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1|)) .cse0 (_ bv12 64))) (not (bvsle |c_ULTIMATE.start_main_~n~0#1| ((_ sign_extend 32) .cse2))))))) is different from false [2021-11-22 15:23:57,568 WARN L227 SmtUtils]: Spent 13.23s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:24:40,468 WARN L227 SmtUtils]: Spent 11.66s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)