./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN --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 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:28:09,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:09,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:09,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:09,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:09,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:09,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:09,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:09,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:09,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:09,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:09,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:09,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:09,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:09,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:09,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:09,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:09,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:09,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:09,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:09,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:09,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:09,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:09,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:09,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:09,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:09,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:09,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:09,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:09,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:09,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:09,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:09,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:09,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:09,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:09,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:09,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:09,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:09,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:09,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:09,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:09,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:28:09,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:09,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:09,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:09,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:09,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:09,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:09,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:09,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:09,607 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:09,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:09,608 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:28:09,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:09,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:28:09,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:09,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:28:09,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:09,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:28:09,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:28:09,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:28:09,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:09,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:28:09,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:09,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:09,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:09,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:09,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:09,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:09,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:28:09,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:28:09,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:28:09,614 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:28:09,614 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:28:09,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:28:09,615 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_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 [2022-11-20 09:28:09,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:09,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:09,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:09,933 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:09,934 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:09,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2022-11-20 09:28:12,983 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:13,153 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:13,154 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2022-11-20 09:28:13,161 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/data/e128301cf/94d18da79567455fb029b6c7e933d068/FLAG52a2d5a33 [2022-11-20 09:28:13,177 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/data/e128301cf/94d18da79567455fb029b6c7e933d068 [2022-11-20 09:28:13,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:13,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:13,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:13,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:13,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:13,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119a8c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13, skipping insertion in model container [2022-11-20 09:28:13,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:13,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:13,353 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2022-11-20 09:28:13,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:13,374 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:13,385 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2022-11-20 09:28:13,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:13,402 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:13,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13 WrapperNode [2022-11-20 09:28:13,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:13,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:13,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:13,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:13,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,431 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-11-20 09:28:13,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:13,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:13,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:13,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:13,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,471 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:13,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:13,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:13,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:13,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (1/1) ... [2022-11-20 09:28:13,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:13,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:13,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:13,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:13,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:28:13,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:13,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:13,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:28:13,613 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:13,615 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:13,721 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:13,727 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:13,727 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:28:13,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:13 BoogieIcfgContainer [2022-11-20 09:28:13,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:13,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:13,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:13,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:13,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:13" (1/3) ... [2022-11-20 09:28:13,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6d2177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:13, skipping insertion in model container [2022-11-20 09:28:13,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:13" (2/3) ... [2022-11-20 09:28:13,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6d2177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:13, skipping insertion in model container [2022-11-20 09:28:13,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:13" (3/3) ... [2022-11-20 09:28:13,763 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond_1-2.c [2022-11-20 09:28:13,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:13,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:28:13,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:13,884 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@289eb2fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:13,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:28:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2022-11-20 09:28:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:28:13,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:13,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:28:13,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:13,900 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2022-11-20 09:28:13,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:13,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511275790] [2022-11-20 09:28:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:13,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:14,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511275790] [2022-11-20 09:28:14,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511275790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:14,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:14,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:14,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238381894] [2022-11-20 09:28:14,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:14,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:28:14,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:14,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:28:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:28:14,117 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-20 09:28:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:14,132 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-11-20 09:28:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:28:14,134 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-20 09:28:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:14,143 INFO L225 Difference]: With dead ends: 20 [2022-11-20 09:28:14,143 INFO L226 Difference]: Without dead ends: 8 [2022-11-20 09:28:14,146 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:28:14,150 INFO L413 NwaCegarLoop]: 13 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, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:14,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-20 09:28:14,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-20 09:28:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-20 09:28:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-11-20 09:28:14,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-11-20 09:28:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:14,191 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-20 09:28:14,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-20 09:28:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-11-20 09:28:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 09:28:14,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:14,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 09:28:14,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:14,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:14,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:14,194 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2022-11-20 09:28:14,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:14,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294000096] [2022-11-20 09:28:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:14,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:14,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:14,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294000096] [2022-11-20 09:28:14,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294000096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:14,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:14,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:14,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348608624] [2022-11-20 09:28:14,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:14,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:14,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:14,383 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 09:28:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:14,422 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2022-11-20 09:28:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:14,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-20 09:28:14,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:14,425 INFO L225 Difference]: With dead ends: 14 [2022-11-20 09:28:14,425 INFO L226 Difference]: Without dead ends: 10 [2022-11-20 09:28:14,433 INFO L412 NwaCegarLoop]: 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 [2022-11-20 09:28:14,434 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:14,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:14,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-20 09:28:14,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-11-20 09:28:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2022-11-20 09:28:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-20 09:28:14,449 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-11-20 09:28:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:14,450 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-20 09:28:14,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 09:28:14,450 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-20 09:28:14,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 09:28:14,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:14,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:14,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:28:14,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:14,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:14,453 INFO L85 PathProgramCache]: Analyzing trace with hash 297538966, now seen corresponding path program 1 times [2022-11-20 09:28:14,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:14,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505103215] [2022-11-20 09:28:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:14,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:14,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:14,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505103215] [2022-11-20 09:28:14,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505103215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:14,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995074139] [2022-11-20 09:28:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:14,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:14,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:14,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:14,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:28:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:28:14,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:14,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:14,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995074139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:14,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:14,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-20 09:28:14,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580474194] [2022-11-20 09:28:14,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:14,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:14,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:14,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:14,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:14,857 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2022-11-20 09:28:14,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:14,941 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2022-11-20 09:28:14,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:14,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 8 [2022-11-20 09:28:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:14,943 INFO L225 Difference]: With dead ends: 21 [2022-11-20 09:28:14,943 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 09:28:14,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:28:14,945 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:14,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:28:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 09:28:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-20 09:28:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-20 09:28:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-20 09:28:14,952 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2022-11-20 09:28:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:14,952 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-20 09:28:14,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2022-11-20 09:28:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-20 09:28:14,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 09:28:14,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:14,954 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:14,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:15,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:15,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:15,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:15,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1979276421, now seen corresponding path program 2 times [2022-11-20 09:28:15,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:15,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608213416] [2022-11-20 09:28:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:15,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:15,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:15,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608213416] [2022-11-20 09:28:15,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608213416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:15,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409423748] [2022-11-20 09:28:15,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:15,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:15,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:15,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:15,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:28:15,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:28:15,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:15,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:28:15,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:15,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:15,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409423748] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:15,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:15,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-20 09:28:15,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711858232] [2022-11-20 09:28:15,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:15,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:28:15,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:15,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:28:15,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:28:15,820 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 09:28:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:16,368 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2022-11-20 09:28:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:28:16,370 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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 14 [2022-11-20 09:28:16,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:16,371 INFO L225 Difference]: With dead ends: 42 [2022-11-20 09:28:16,371 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 09:28:16,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:16,373 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:16,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 30 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:28:16,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 09:28:16,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2022-11-20 09:28:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2022-11-20 09:28:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-11-20 09:28:16,384 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2022-11-20 09:28:16,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:16,385 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-11-20 09:28:16,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 09:28:16,386 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-11-20 09:28:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:28:16,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:16,389 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:16,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:16,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:16,594 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:16,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1371031502, now seen corresponding path program 1 times [2022-11-20 09:28:16,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:16,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726820389] [2022-11-20 09:28:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:16,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 09:28:16,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:16,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726820389] [2022-11-20 09:28:16,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726820389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:16,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:16,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199411890] [2022-11-20 09:28:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:16,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:16,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:16,640 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 09:28:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:16,664 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2022-11-20 09:28:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 20 [2022-11-20 09:28:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:16,666 INFO L225 Difference]: With dead ends: 59 [2022-11-20 09:28:16,666 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 09:28:16,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:16,668 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:16,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:16,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 09:28:16,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-11-20 09:28:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 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) [2022-11-20 09:28:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-11-20 09:28:16,684 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 20 [2022-11-20 09:28:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:16,685 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-11-20 09:28:16,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-20 09:28:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-11-20 09:28:16,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:28:16,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:16,686 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:16,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:28:16,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:16,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1632628134, now seen corresponding path program 1 times [2022-11-20 09:28:16,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:16,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239483874] [2022-11-20 09:28:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:16,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:16,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239483874] [2022-11-20 09:28:16,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239483874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116240815] [2022-11-20 09:28:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:16,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:16,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:16,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:28:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:16,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 09:28:16,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:17,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:17,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116240815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:17,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:17,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-11-20 09:28:17,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691734993] [2022-11-20 09:28:17,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:17,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 09:28:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:17,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 09:28:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:28:17,295 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 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) [2022-11-20 09:28:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:18,861 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2022-11-20 09:28:18,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:28:18,862 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 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 20 [2022-11-20 09:28:18,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:18,863 INFO L225 Difference]: With dead ends: 119 [2022-11-20 09:28:18,863 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 09:28:18,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2022-11-20 09:28:18,865 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:18,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 33 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:28:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 09:28:18,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 58. [2022-11-20 09:28:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 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) [2022-11-20 09:28:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-11-20 09:28:18,903 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 20 [2022-11-20 09:28:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:18,904 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-11-20 09:28:18,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 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) [2022-11-20 09:28:18,904 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-11-20 09:28:18,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:28:18,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:18,907 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:18,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:19,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:19,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:19,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1066218333, now seen corresponding path program 3 times [2022-11-20 09:28:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:19,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208459902] [2022-11-20 09:28:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:19,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:19,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208459902] [2022-11-20 09:28:19,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208459902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:19,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216034628] [2022-11-20 09:28:19,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:28:19,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:19,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:19,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:28:19,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 09:28:19,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:19,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:28:19,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:19,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:20,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216034628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:20,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:20,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-20 09:28:20,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720757484] [2022-11-20 09:28:20,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:20,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 09:28:20,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:20,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 09:28:20,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2022-11-20 09:28:20,087 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 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) [2022-11-20 09:28:25,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:25,331 INFO L93 Difference]: Finished difference Result 201 states and 247 transitions. [2022-11-20 09:28:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 09:28:25,332 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 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) Word has length 26 [2022-11-20 09:28:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:25,333 INFO L225 Difference]: With dead ends: 201 [2022-11-20 09:28:25,334 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 09:28:25,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 09:28:25,335 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:25,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 45 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 09:28:25,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 09:28:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 82. [2022-11-20 09:28:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 81 states have internal predecessors, (105), 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) [2022-11-20 09:28:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2022-11-20 09:28:25,364 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 26 [2022-11-20 09:28:25,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:25,364 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2022-11-20 09:28:25,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 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) [2022-11-20 09:28:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2022-11-20 09:28:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:28:25,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:25,366 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:25,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:25,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 09:28:25,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash -477339582, now seen corresponding path program 2 times [2022-11-20 09:28:25,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:25,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481758730] [2022-11-20 09:28:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-20 09:28:25,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:25,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481758730] [2022-11-20 09:28:25,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481758730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:25,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:25,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:28:25,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619214791] [2022-11-20 09:28:25,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:25,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:28:25,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:25,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:28:25,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:25,622 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2022-11-20 09:28:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:25,677 INFO L93 Difference]: Finished difference Result 117 states and 139 transitions. [2022-11-20 09:28:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:28:25,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 36 [2022-11-20 09:28:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:25,680 INFO L225 Difference]: With dead ends: 117 [2022-11-20 09:28:25,680 INFO L226 Difference]: Without dead ends: 86 [2022-11-20 09:28:25,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:28:25,683 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:25,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:28:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-20 09:28:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2022-11-20 09:28:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 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) [2022-11-20 09:28:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2022-11-20 09:28:25,728 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 36 [2022-11-20 09:28:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:25,729 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2022-11-20 09:28:25,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2022-11-20 09:28:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2022-11-20 09:28:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 09:28:25,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:25,736 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:25,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:28:25,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:25,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:25,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1804897185, now seen corresponding path program 2 times [2022-11-20 09:28:25,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:25,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685205291] [2022-11-20 09:28:25,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:26,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:26,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685205291] [2022-11-20 09:28:26,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685205291] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:26,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086881270] [2022-11-20 09:28:26,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:26,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:26,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:26,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:26,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:28:26,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:28:26,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:26,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 09:28:26,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:26,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:27,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086881270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:27,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:27,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2022-11-20 09:28:27,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698124474] [2022-11-20 09:28:27,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:27,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 09:28:27,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:27,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 09:28:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=938, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 09:28:27,320 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 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) [2022-11-20 09:28:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:50,144 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2022-11-20 09:28:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 09:28:50,145 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 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 38 [2022-11-20 09:28:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:50,146 INFO L225 Difference]: With dead ends: 122 [2022-11-20 09:28:50,146 INFO L226 Difference]: Without dead ends: 118 [2022-11-20 09:28:50,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=986, Invalid=1770, Unknown=0, NotChecked=0, Total=2756 [2022-11-20 09:28:50,148 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:50,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 66 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 09:28:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-20 09:28:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-11-20 09:28:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 117 states have internal predecessors, (120), 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) [2022-11-20 09:28:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2022-11-20 09:28:50,180 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 38 [2022-11-20 09:28:50,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:50,181 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2022-11-20 09:28:50,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 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) [2022-11-20 09:28:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2022-11-20 09:28:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 09:28:50,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:50,183 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:50,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:50,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:50,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:50,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:50,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1301187105, now seen corresponding path program 4 times [2022-11-20 09:28:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:50,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221625463] [2022-11-20 09:28:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:50,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:51,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:51,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221625463] [2022-11-20 09:28:51,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221625463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:51,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122424773] [2022-11-20 09:28:51,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:28:51,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:51,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:51,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:51,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:28:51,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:28:51,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:51,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 09:28:51,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:51,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:52,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122424773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:52,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:52,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-20 09:28:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697881152] [2022-11-20 09:28:52,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:52,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 09:28:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 09:28:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=1682, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 09:28:52,915 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 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) [2022-11-20 09:30:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:41,717 INFO L93 Difference]: Finished difference Result 170 states and 195 transitions. [2022-11-20 09:30:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 09:30:41,718 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 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 50 [2022-11-20 09:30:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:41,719 INFO L225 Difference]: With dead ends: 170 [2022-11-20 09:30:41,719 INFO L226 Difference]: Without dead ends: 166 [2022-11-20 09:30:41,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 108.5s TimeCoverageRelationStatistics Valid=1748, Invalid=3222, Unknown=0, NotChecked=0, Total=4970 [2022-11-20 09:30:41,721 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:41,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 75 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 09:30:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-20 09:30:41,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-20 09:30:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.018181818181818) internal successors, (168), 165 states have internal predecessors, (168), 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) [2022-11-20 09:30:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2022-11-20 09:30:41,764 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 50 [2022-11-20 09:30:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:41,764 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2022-11-20 09:30:41,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 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) [2022-11-20 09:30:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2022-11-20 09:30:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 09:30:41,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:41,766 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:41,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:41,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:30:41,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2069904727, now seen corresponding path program 3 times [2022-11-20 09:30:41,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:41,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068902070] [2022-11-20 09:30:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:41,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:43,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:43,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068902070] [2022-11-20 09:30:43,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068902070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:43,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006518015] [2022-11-20 09:30:43,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:30:43,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:43,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:43,649 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:43,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2d978d8-e532-4fde-87f1-a7af53925d81/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:30:46,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2022-11-20 09:30:46,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:46,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-20 09:30:46,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:46,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:30:54,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006518015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:54,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:54,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 40] total 76 [2022-11-20 09:30:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924660645] [2022-11-20 09:30:54,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:54,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-20 09:30:54,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-20 09:30:54,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1483, Invalid=4217, Unknown=0, NotChecked=0, Total=5700 [2022-11-20 09:30:54,932 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand has 76 states, 76 states have (on average 1.9473684210526316) internal successors, (148), 76 states have internal predecessors, (148), 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) [2022-11-20 09:38:00,449 WARN L233 SmtUtils]: Spent 6.52m on a formula simplification that was a NOOP. DAG size: 219 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:38:02,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:38:04,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:38:08,255 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse1 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 99)) (.cse6 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 99)) (.cse3 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 99)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 99)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 99)) (.cse4 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 99)) (.cse8 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) 99)) (.cse24 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 99)) (.cse27 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 99)) (.cse28 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 99)) (.cse22 (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 99)) (.cse9 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 99)) (.cse23 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 99)) (.cse18 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) 99)) (.cse31 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) 99)) (.cse16 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) 99)) (.cse2 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 29) 4294967296) 99)) (.cse14 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 30) 4294967296) 99)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 31) 4294967296) 99)) (.cse25 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 99)) (.cse19 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 99)) (.cse29 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 99)) (.cse13 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 99)) (.cse5 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 99)) (.cse17 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 99)) (.cse26 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 99)) (.cse20 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) 99)) (.cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 99)) (.cse30 (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 99)) (.cse21 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 99)) (.cse10 (< (mod .cse11 4294967296) 99))) (and (or (not .cse0) .cse1) (or .cse2 (not .cse3)) (or (not .cse4) .cse5) (or (not .cse1) .cse6) (or (not .cse6) .cse7) (or (not .cse8) .cse9) (or .cse10 (< (mod (mod .cse11 2) 4294967296) 1)) (or .cse3 (not .cse7)) (or .cse12 (not .cse13)) (or (not .cse14) .cse15) (or .cse16 (not .cse17)) (or (not .cse18) .cse19) (or .cse20 (not .cse21)) (or (not .cse12) .cse4) (or (not .cse22) .cse23) (or .cse24 (not .cse25)) (or .cse8 (not .cse26)) (or (not .cse24) .cse27) (or .cse28 (not .cse27)) (or (not .cse28) .cse29) (or .cse30 (not .cse31)) (or (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 99) (= (mod (mod |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296))) (or .cse22 (not .cse9)) (or (not .cse23) .cse18) (or .cse31 (not .cse16)) (or (not .cse2) .cse14) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 32) 4294967296) 99) (not .cse15)) (or .cse25 (not .cse19)) (or (not .cse29) .cse13) (or (not .cse5) .cse17) (or .cse26 (not .cse20)) (or .cse0 (not .cse30)) (or .cse21 (not .cse10))))) is different from false [2022-11-20 09:38:10,298 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (+ |c_ULTIMATE.start_main_~x~0#1| 1))) (let ((.cse1 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 99)) (.cse6 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 99)) (.cse3 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 99)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 99)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 99)) (.cse4 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 99)) (.cse8 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) 99)) (.cse24 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 99)) (.cse27 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 99)) (.cse28 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 99)) (.cse22 (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 99)) (.cse9 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 99)) (.cse23 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 99)) (.cse18 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) 99)) (.cse31 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) 99)) (.cse16 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) 99)) (.cse2 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 29) 4294967296) 99)) (.cse14 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 30) 4294967296) 99)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 31) 4294967296) 99)) (.cse25 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 99)) (.cse19 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 99)) (.cse29 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 99)) (.cse13 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 99)) (.cse5 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 99)) (.cse17 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 99)) (.cse26 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 99)) (.cse20 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) 99)) (.cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 99)) (.cse30 (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 99)) (.cse21 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 99)) (.cse10 (< (mod .cse11 4294967296) 99))) (and (or (not .cse0) .cse1) (or .cse2 (not .cse3)) (or (not .cse4) .cse5) (or (not .cse1) .cse6) (or (not .cse6) .cse7) (or (not .cse8) .cse9) (or .cse10 (< (mod (mod .cse11 2) 4294967296) 1)) (or .cse3 (not .cse7)) (or .cse12 (not .cse13)) (or (not .cse14) .cse15) (or .cse16 (not .cse17)) (or (not .cse18) .cse19) (or .cse20 (not .cse21)) (or (not .cse12) .cse4) (or (not .cse22) .cse23) (or .cse24 (not .cse25)) (or .cse8 (not .cse26)) (or (not .cse24) .cse27) (or .cse28 (not .cse27)) (or (not .cse28) .cse29) (or .cse30 (not .cse31)) (or .cse22 (not .cse9)) (or (not .cse23) .cse18) (or .cse31 (not .cse16)) (or (not .cse2) .cse14) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 32) 4294967296) 99) (not .cse15)) (or .cse25 (not .cse19)) (or (not .cse29) .cse13) (or (not .cse5) .cse17) (or .cse26 (not .cse20)) (or .cse0 (not .cse30)) (or .cse21 (not .cse10))))) is different from false [2022-11-20 09:38:12,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:38:15,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:38:18,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []