./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G --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 5ad780effdbe313ff13ad5bc7233d50356fbf06f53a57c18cd85a4aa46126eb2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:40:16,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:40:16,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:40:16,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:40:16,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:40:16,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:40:16,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:40:16,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:40:16,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:40:16,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:40:16,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:40:16,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:40:16,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:40:16,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:40:16,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:40:16,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:40:16,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:40:16,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:40:16,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:40:16,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:40:16,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:40:16,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:40:16,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:40:16,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:40:16,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:40:16,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:40:16,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:40:16,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:40:16,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:40:16,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:40:16,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:40:16,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:40:16,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:40:16,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:40:16,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:40:16,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:40:16,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:40:16,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:40:16,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:40:16,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:40:16,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:40:16,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:40:16,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:40:16,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:40:16,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:40:16,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:40:16,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:40:16,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:40:16,465 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:40:16,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:40:16,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:40:16,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:40:16,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:40:16,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:40:16,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:40:16,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:40:16,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:40:16,469 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:40:16,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:40:16,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:40:16,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:40:16,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:40:16,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:40:16,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:40:16,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:40:16,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:40:16,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:40:16,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:40:16,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:40:16,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:40:16,474 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:40:16,476 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:40:16,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:40:16,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:40:16,477 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_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ad780effdbe313ff13ad5bc7233d50356fbf06f53a57c18cd85a4aa46126eb2 [2021-11-23 13:40:16,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:40:16,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:40:16,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:40:16,948 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:40:16,949 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:40:16,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/loops-crafted-1/nested5-2.c [2021-11-23 13:40:17,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/data/540e92320/3754cc283dd046648adbd3c81ceffcbd/FLAG782838203 [2021-11-23 13:40:17,735 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:40:17,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/sv-benchmarks/c/loops-crafted-1/nested5-2.c [2021-11-23 13:40:17,750 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/data/540e92320/3754cc283dd046648adbd3c81ceffcbd/FLAG782838203 [2021-11-23 13:40:18,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/data/540e92320/3754cc283dd046648adbd3c81ceffcbd [2021-11-23 13:40:18,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:40:18,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:40:18,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:40:18,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:40:18,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:40:18,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf6c277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18, skipping insertion in model container [2021-11-23 13:40:18,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:40:18,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:40:18,363 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_58d59e4f-d236-44cf-9315-cfefcb5f0969/sv-benchmarks/c/loops-crafted-1/nested5-2.c[321,334] [2021-11-23 13:40:18,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:40:18,401 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:40:18,418 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_58d59e4f-d236-44cf-9315-cfefcb5f0969/sv-benchmarks/c/loops-crafted-1/nested5-2.c[321,334] [2021-11-23 13:40:18,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:40:18,461 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:40:18,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18 WrapperNode [2021-11-23 13:40:18,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:40:18,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:40:18,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:40:18,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:40:18,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,513 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2021-11-23 13:40:18,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:40:18,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:40:18,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:40:18,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:40:18,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:40:18,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:40:18,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:40:18,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:40:18,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (1/1) ... [2021-11-23 13:40:18,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:40:18,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:18,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:40:18,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:40:18,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:40:18,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:40:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:40:18,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:40:18,770 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:40:18,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:40:19,007 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:40:19,016 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:40:19,017 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 13:40:19,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:19 BoogieIcfgContainer [2021-11-23 13:40:19,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:40:19,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:40:19,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:40:19,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:40:19,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:40:18" (1/3) ... [2021-11-23 13:40:19,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69df0838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:40:19, skipping insertion in model container [2021-11-23 13:40:19,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:40:18" (2/3) ... [2021-11-23 13:40:19,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69df0838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:40:19, skipping insertion in model container [2021-11-23 13:40:19,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:40:19" (3/3) ... [2021-11-23 13:40:19,035 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-2.c [2021-11-23 13:40:19,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:40:19,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:40:19,115 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:40:19,123 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 [2021-11-23 13:40:19,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:40:19,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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) [2021-11-23 13:40:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:40:19,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:19,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:19,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:40:19,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:19,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1296464707, now seen corresponding path program 1 times [2021-11-23 13:40:19,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:19,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205430264] [2021-11-23 13:40:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:19,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:19,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:19,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205430264] [2021-11-23 13:40:19,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205430264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:40:19,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:40:19,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:40:19,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137050292] [2021-11-23 13:40:19,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:40:19,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:40:19,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:40:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:40:19,669 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-11-23 13:40:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:19,732 INFO L93 Difference]: Finished difference Result 53 states and 82 transitions. [2021-11-23 13:40:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:40:19,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 10 [2021-11-23 13:40:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:40:19,751 INFO L225 Difference]: With dead ends: 53 [2021-11-23 13:40:19,753 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 13:40:19,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:40:19,769 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:40:19,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 42 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:40:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 13:40:19,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2021-11-23 13:40:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 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) [2021-11-23 13:40:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-23 13:40:19,821 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2021-11-23 13:40:19,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:40:19,822 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-23 13:40:19,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-11-23 13:40:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-23 13:40:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:40:19,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:19,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:19,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:40:19,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:40:19,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash -308834241, now seen corresponding path program 1 times [2021-11-23 13:40:19,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:19,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809540689] [2021-11-23 13:40:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:19,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:19,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:19,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809540689] [2021-11-23 13:40:19,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809540689] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:40:19,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43277116] [2021-11-23 13:40:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:19,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:40:19,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:19,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:40:19,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:40:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:20,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:40:20,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:40:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:20,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:40:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:20,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43277116] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:40:20,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:40:20,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 13:40:20,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480098113] [2021-11-23 13:40:20,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:40:20,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:40:20,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:20,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:40:20,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:40:20,247 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2021-11-23 13:40:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:20,330 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2021-11-23 13:40:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:40:20,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 12 [2021-11-23 13:40:20,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:40:20,332 INFO L225 Difference]: With dead ends: 47 [2021-11-23 13:40:20,333 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 13:40:20,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:40:20,336 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:40:20,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 58 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:40:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 13:40:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2021-11-23 13:40:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2021-11-23 13:40:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-23 13:40:20,346 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2021-11-23 13:40:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:40:20,347 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-23 13:40:20,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2021-11-23 13:40:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-23 13:40:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:40:20,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:20,349 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:20,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:40:20,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:40:20,563 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:40:20,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash 83697605, now seen corresponding path program 2 times [2021-11-23 13:40:20,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:20,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766237766] [2021-11-23 13:40:20,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:20,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:20,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:20,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766237766] [2021-11-23 13:40:20,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766237766] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:40:20,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083598343] [2021-11-23 13:40:20,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:40:20,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:40:20,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:20,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:40:20,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:40:20,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:40:20,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:40:20,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:40:20,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:40:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:21,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:40:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:21,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083598343] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:40:21,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:40:21,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-23 13:40:21,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943064829] [2021-11-23 13:40:21,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:40:21,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 13:40:21,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 13:40:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:40:21,235 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-11-23 13:40:21,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:40:21,798 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2021-11-23 13:40:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:40:21,801 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 18 [2021-11-23 13:40:21,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:40:21,802 INFO L225 Difference]: With dead ends: 65 [2021-11-23 13:40:21,803 INFO L226 Difference]: Without dead ends: 43 [2021-11-23 13:40:21,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:40:21,806 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 29 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:40:21,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 145 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:40:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-23 13:40:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2021-11-23 13:40:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 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) [2021-11-23 13:40:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-23 13:40:21,824 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 18 [2021-11-23 13:40:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:40:21,824 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-23 13:40:21,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-11-23 13:40:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-23 13:40:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 13:40:21,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:40:21,827 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:40:21,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:40:22,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:40:22,051 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:40:22,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:40:22,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1185224367, now seen corresponding path program 3 times [2021-11-23 13:40:22,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:40:22,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588265583] [2021-11-23 13:40:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:40:22,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:40:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:40:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:22,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:40:22,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588265583] [2021-11-23 13:40:22,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588265583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:40:22,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582265355] [2021-11-23 13:40:22,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 13:40:22,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:40:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:40:22,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:40:22,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:40:22,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-23 13:40:22,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:40:22,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 13:40:22,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:40:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:22,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:40:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:40:23,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582265355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:40:23,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:40:23,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 27 [2021-11-23 13:40:23,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604475449] [2021-11-23 13:40:23,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:40:23,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-23 13:40:23,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:40:23,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-23 13:40:23,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2021-11-23 13:40:23,911 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 27 states have internal predecessors, (56), 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) [2021-11-23 13:41:39,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:41:39,366 INFO L93 Difference]: Finished difference Result 159 states and 199 transitions. [2021-11-23 13:41:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-23 13:41:39,367 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 27 states have internal predecessors, (56), 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 30 [2021-11-23 13:41:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:41:39,370 INFO L225 Difference]: With dead ends: 159 [2021-11-23 13:41:39,370 INFO L226 Difference]: Without dead ends: 125 [2021-11-23 13:41:39,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 75.2s TimeCoverageRelationStatistics Valid=1070, Invalid=2460, Unknown=10, NotChecked=0, Total=3540 [2021-11-23 13:41:39,375 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 138 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:41:39,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 327 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:41:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-23 13:41:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 62. [2021-11-23 13:41:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.098360655737705) internal successors, (67), 61 states have internal predecessors, (67), 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) [2021-11-23 13:41:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2021-11-23 13:41:39,392 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 30 [2021-11-23 13:41:39,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:41:39,392 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2021-11-23 13:41:39,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 27 states have internal predecessors, (56), 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) [2021-11-23 13:41:39,393 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2021-11-23 13:41:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 13:41:39,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:41:39,396 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:41:39,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:41:39,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:41:39,601 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:41:39,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:41:39,602 INFO L85 PathProgramCache]: Analyzing trace with hash -29907351, now seen corresponding path program 4 times [2021-11-23 13:41:39,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:41:39,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372876754] [2021-11-23 13:41:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:41:39,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:41:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:41:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:40,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:41:40,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372876754] [2021-11-23 13:41:40,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372876754] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:41:40,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200011805] [2021-11-23 13:41:40,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 13:41:40,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:41:40,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:41:40,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:41:40,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:41:40,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 13:41:40,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:41:40,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 13:41:40,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:41:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:40,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:41:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:41:42,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200011805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:41:42,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:41:42,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-11-23 13:41:42,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819880541] [2021-11-23 13:41:42,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:41:42,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-23 13:41:42,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:41:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-23 13:41:42,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=1682, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 13:41:42,500 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 49 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) [2021-11-23 13:44:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:26,182 INFO L93 Difference]: Finished difference Result 175 states and 212 transitions. [2021-11-23 13:44:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-23 13:44:26,184 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 49 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) Word has length 54 [2021-11-23 13:44:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:26,186 INFO L225 Difference]: With dead ends: 175 [2021-11-23 13:44:26,186 INFO L226 Difference]: Without dead ends: 115 [2021-11-23 13:44:26,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 164.6s TimeCoverageRelationStatistics Valid=1742, Invalid=3222, Unknown=6, NotChecked=0, Total=4970 [2021-11-23 13:44:26,205 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 65 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:26,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 577 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:44:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-23 13:44:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2021-11-23 13:44:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 states have internal predecessors, (112), 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) [2021-11-23 13:44:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2021-11-23 13:44:26,230 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 54 [2021-11-23 13:44:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:26,231 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2021-11-23 13:44:26,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 49 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) [2021-11-23 13:44:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2021-11-23 13:44:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-23 13:44:26,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:26,237 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:26,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-23 13:44:26,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:44:26,451 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1528182631, now seen corresponding path program 5 times [2021-11-23 13:44:26,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:26,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997450406] [2021-11-23 13:44:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:26,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:28,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:28,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997450406] [2021-11-23 13:44:28,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997450406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:44:28,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099164272] [2021-11-23 13:44:28,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 13:44:28,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:44:28,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:44:28,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:44:28,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58d59e4f-d236-44cf-9315-cfefcb5f0969/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:48:49,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-11-23 13:48:49,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:48:49,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-23 13:48:49,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:48:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:48:50,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:48:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:48:56,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099164272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:48:56,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:48:56,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2021-11-23 13:48:56,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624867025] [2021-11-23 13:48:56,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:48:56,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-23 13:48:56,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:48:56,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-23 13:48:56,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2494, Invalid=6818, Unknown=0, NotChecked=0, Total=9312 [2021-11-23 13:48:56,263 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 97 states have internal predecessors, (198), 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) [2021-11-23 13:49:00,874 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 18) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 43) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 25) 4294967296) 268435455) (< (mod (+ 5 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 34) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 28) 4294967296) 268435455) (< (mod (+ 46 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 33) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 17) 4294967296) 268435455) (< (mod (+ 3 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 31 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 21 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 12) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 11) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 45) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 38) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 9 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 39) 4294967296) 268435455) (< (mod (+ 35 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 36) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 27) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 13) 4294967296) 268435455) (< (mod (+ 29 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 15) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~v~0#1| 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455)) is different from false [2021-11-23 13:50:27,708 WARN L227 SmtUtils]: Spent 32.02s on a formula simplification. DAG size of input: 188 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:50:29,729 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 18) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 43) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 25) 4294967296) 268435455) (< (mod (+ 5 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 34) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 33) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 17) 4294967296) 268435455) (< (mod (+ 3 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 31 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 21 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 12) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 11) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 45) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 38) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 9 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 39) 4294967296) 268435455) (< (mod (+ 35 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 36) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 27) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 13) 4294967296) 268435455) (< (mod (+ 29 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 15) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~v~0#1| 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455)) is different from false [2021-11-23 13:51:55,909 WARN L227 SmtUtils]: Spent 25.79s on a formula simplification. DAG size of input: 184 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:51:57,926 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 18) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 43) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 25) 4294967296) 268435455) (< (mod (+ 5 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 34) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 33) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 17) 4294967296) 268435455) (< (mod (+ 3 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 31 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 21 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 12) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 11) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 38) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 9 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 39) 4294967296) 268435455) (< (mod (+ 35 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 36) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 27) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 13) 4294967296) 268435455) (< (mod (+ 29 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~v~0#1| 15) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~v~0#1| 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~v~0#1|) 4294967296) 268435455)) is different from false [2021-11-23 13:53:16,737 WARN L227 SmtUtils]: Spent 20.75s on a formula simplification. DAG size of input: 180 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:54:40,497 WARN L227 SmtUtils]: Spent 23.99s on a formula simplification. DAG size of input: 178 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)