./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/prodbin-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/prodbin-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77bbfba272f7904e5efe099569a5ed86d54de3fd07a8ce9d48301467c5048e30 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:56:46,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:56:46,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:56:46,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:56:46,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:56:46,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:56:46,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:56:46,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:56:46,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:56:46,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:56:46,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:56:46,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:56:46,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:56:46,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:56:46,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:56:46,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:56:46,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:56:46,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:56:46,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:56:46,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:56:46,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:56:46,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:56:46,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:56:46,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:56:46,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:56:46,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:56:46,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:56:46,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:56:46,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:56:46,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:56:46,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:56:46,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:56:46,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:56:46,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:56:46,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:56:46,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:56:46,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:56:46,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:56:46,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:56:46,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:56:46,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:56:46,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:56:46,690 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:56:46,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:56:46,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:56:46,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:56:46,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:56:46,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:56:46,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:56:46,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:56:46,694 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:56:46,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:56:46,695 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:56:46,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:56:46,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:56:46,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:56:46,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:56:46,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:56:46,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:56:46,697 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:56:46,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:56:46,698 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:56:46,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:56:46,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:56:46,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:56:46,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:56:46,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:56:46,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:56:46,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:56:46,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:56:46,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:56:46,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:56:46,702 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:56:46,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:56:46,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:56:46,703 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_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77bbfba272f7904e5efe099569a5ed86d54de3fd07a8ce9d48301467c5048e30 [2022-11-16 11:56:47,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:56:47,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:56:47,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:56:47,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:56:47,115 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:56:47,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench/prodbin-ll.c [2022-11-16 11:56:47,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/data/9c6269063/c20302c123144ac69049e9ea6c5336f8/FLAG0c9ae16af [2022-11-16 11:56:47,780 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:56:47,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/sv-benchmarks/c/nla-digbench/prodbin-ll.c [2022-11-16 11:56:47,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/data/9c6269063/c20302c123144ac69049e9ea6c5336f8/FLAG0c9ae16af [2022-11-16 11:56:48,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/data/9c6269063/c20302c123144ac69049e9ea6c5336f8 [2022-11-16 11:56:48,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:56:48,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:56:48,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:48,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:56:48,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:56:48,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cc89a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48, skipping insertion in model container [2022-11-16 11:56:48,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:56:48,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:56:48,430 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/sv-benchmarks/c/nla-digbench/prodbin-ll.c[537,550] [2022-11-16 11:56:48,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:48,458 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:56:48,474 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/sv-benchmarks/c/nla-digbench/prodbin-ll.c[537,550] [2022-11-16 11:56:48,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:48,499 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:56:48,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48 WrapperNode [2022-11-16 11:56:48,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:48,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:48,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:56:48,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:56:48,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,544 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-11-16 11:56:48,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:48,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:56:48,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:56:48,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:56:48,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,571 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:56:48,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:56:48,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:56:48,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:56:48,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (1/1) ... [2022-11-16 11:56:48,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:56:48,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:48,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:56:48,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:56:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:56:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:56:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:56:48,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:56:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:56:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:56:48,777 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:56:48,781 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:56:48,949 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:56:48,958 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:56:48,958 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:56:48,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:48 BoogieIcfgContainer [2022-11-16 11:56:48,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:56:48,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:56:48,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:56:48,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:56:48,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:56:48" (1/3) ... [2022-11-16 11:56:48,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b36ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:48, skipping insertion in model container [2022-11-16 11:56:48,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:48" (2/3) ... [2022-11-16 11:56:48,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b36ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:48, skipping insertion in model container [2022-11-16 11:56:48,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:48" (3/3) ... [2022-11-16 11:56:48,976 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll.c [2022-11-16 11:56:49,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:56:49,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:56:49,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:56:49,097 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;@4391657, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:56:49,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:56:49,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:56:49,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:56:49,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:49,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:49,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:49,124 INFO L85 PathProgramCache]: Analyzing trace with hash -589251586, now seen corresponding path program 1 times [2022-11-16 11:56:49,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:49,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116919574] [2022-11-16 11:56:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:49,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:49,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:49,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116919574] [2022-11-16 11:56:49,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 11:56:49,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461477033] [2022-11-16 11:56:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:49,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:49,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:49,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:49,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:56:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:49,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:56:49,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:56:49,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:56:49,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461477033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:49,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:49,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:56:49,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872601021] [2022-11-16 11:56:49,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:49,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:56:49,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:56:49,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:56:49,472 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:49,524 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2022-11-16 11:56:49,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:56:49,527 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:56:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:49,552 INFO L225 Difference]: With dead ends: 37 [2022-11-16 11:56:49,552 INFO L226 Difference]: Without dead ends: 16 [2022-11-16 11:56:49,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:56:49,569 INFO L413 NwaCegarLoop]: 22 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, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:49,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:56:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-16 11:56:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-16 11:56:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:56:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-16 11:56:49,633 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-11-16 11:56:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:49,633 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-16 11:56:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-16 11:56:49,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:56:49,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:49,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:49,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:56:49,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:56:49,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:49,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1187543236, now seen corresponding path program 1 times [2022-11-16 11:56:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:49,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270752966] [2022-11-16 11:56:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:49,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:56:49,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079603889] [2022-11-16 11:56:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:49,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:49,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:49,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:49,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:56:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:49,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:56:49,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:56:50,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:56:50,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:50,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270752966] [2022-11-16 11:56:50,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:56:50,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079603889] [2022-11-16 11:56:50,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079603889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:50,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:50,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:56:50,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549694350] [2022-11-16 11:56:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:50,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:56:50,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:50,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:56:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:56:50,177 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:50,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:50,378 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-11-16 11:56:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:56:50,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:56:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:50,381 INFO L225 Difference]: With dead ends: 32 [2022-11-16 11:56:50,381 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 11:56:50,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:56:50,383 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:50,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:56:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 11:56:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-11-16 11:56:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:56:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-16 11:56:50,422 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2022-11-16 11:56:50,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:50,422 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-16 11:56:50,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:56:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-16 11:56:50,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:56:50,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:50,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:50,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:50,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:50,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:50,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1566145315, now seen corresponding path program 1 times [2022-11-16 11:56:50,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:50,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810065643] [2022-11-16 11:56:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:50,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:50,662 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:56:50,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48983935] [2022-11-16 11:56:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:50,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:50,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:50,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:50,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:56:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:50,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:56:50,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:56:51,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:56:58,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:58,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810065643] [2022-11-16 11:56:58,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:56:58,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48983935] [2022-11-16 11:56:58,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48983935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:56:58,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:56:58,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2022-11-16 11:56:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980765664] [2022-11-16 11:56:58,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:58,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:56:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:56:58,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2022-11-16 11:56:58,672 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:57:01,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:57:13,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:57:15,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:57:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:15,897 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-11-16 11:57:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:57:15,898 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-16 11:57:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:15,901 INFO L225 Difference]: With dead ends: 42 [2022-11-16 11:57:15,901 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 11:57:15,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=84, Invalid=333, Unknown=3, NotChecked=0, Total=420 [2022-11-16 11:57:15,904 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:15,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 63 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 180 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2022-11-16 11:57:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 11:57:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2022-11-16 11:57:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:57:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-11-16 11:57:15,919 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 18 [2022-11-16 11:57:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:15,920 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-11-16 11:57:15,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:57:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-11-16 11:57:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:57:15,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:15,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:15,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:57:16,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 11:57:16,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash 208862047, now seen corresponding path program 1 times [2022-11-16 11:57:16,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:16,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018574339] [2022-11-16 11:57:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:16,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:16,148 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:57:16,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659123636] [2022-11-16 11:57:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:16,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:16,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:16,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:16,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:57:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:16,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:57:16,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:16,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:17,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:17,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018574339] [2022-11-16 11:57:17,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:57:17,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659123636] [2022-11-16 11:57:17,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659123636] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:17,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:57:17,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:57:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911800537] [2022-11-16 11:57:17,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:17,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:57:17,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:17,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:57:17,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:57:17,313 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:57:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:18,845 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-11-16 11:57:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:57:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-16 11:57:18,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:18,848 INFO L225 Difference]: With dead ends: 66 [2022-11-16 11:57:18,848 INFO L226 Difference]: Without dead ends: 59 [2022-11-16 11:57:18,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:57:18,850 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 74 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:18,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 60 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:57:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-16 11:57:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2022-11-16 11:57:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:57:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2022-11-16 11:57:18,869 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 18 [2022-11-16 11:57:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:18,869 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2022-11-16 11:57:18,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:57:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2022-11-16 11:57:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:57:18,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:18,872 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:18,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:19,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:19,079 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1499753556, now seen corresponding path program 1 times [2022-11-16 11:57:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:19,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671501699] [2022-11-16 11:57:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:19,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:19,093 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:57:19,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390780034] [2022-11-16 11:57:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:19,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:19,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:19,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:19,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:57:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:19,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:57:19,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:57:19,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:57:19,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:19,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671501699] [2022-11-16 11:57:19,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:57:19,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390780034] [2022-11-16 11:57:19,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390780034] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:19,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:57:19,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-11-16 11:57:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788492717] [2022-11-16 11:57:19,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:19,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:57:19,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:19,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:57:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:57:19,438 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:57:21,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:57:23,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:57:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:57:23,608 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2022-11-16 11:57:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:57:23,609 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-11-16 11:57:23,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:57:23,611 INFO L225 Difference]: With dead ends: 54 [2022-11-16 11:57:23,611 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 11:57:23,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:57:23,613 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:57:23,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 70 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 11:57:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 11:57:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-16 11:57:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 38 states have internal predecessors, (41), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:57:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-11-16 11:57:23,629 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 24 [2022-11-16 11:57:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:57:23,630 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-11-16 11:57:23,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:57:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-11-16 11:57:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 11:57:23,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:57:23,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:23,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:23,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:23,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:57:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:23,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1993243494, now seen corresponding path program 1 times [2022-11-16 11:57:23,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:23,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494562093] [2022-11-16 11:57:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:23,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:57:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919587297] [2022-11-16 11:57:23,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:23,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:23,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:23,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:23,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:57:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:23,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:57:23,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:57:24,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:57:46,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:46,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494562093] [2022-11-16 11:57:46,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:57:46,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919587297] [2022-11-16 11:57:46,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919587297] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:46,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:57:46,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2022-11-16 11:57:46,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596208105] [2022-11-16 11:57:46,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:46,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:57:46,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:46,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:57:46,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=215, Unknown=5, NotChecked=0, Total=272 [2022-11-16 11:57:46,288 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:57:47,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:57:53,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:57:58,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:01,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:03,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:10,744 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 68 DAG size of output: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:58:12,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:13,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:15,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:17,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:19,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:26,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:27,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:29,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:36,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:58:52,193 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 63 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:58:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:58:55,120 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2022-11-16 11:58:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:58:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 27 [2022-11-16 11:58:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:58:55,122 INFO L225 Difference]: With dead ends: 91 [2022-11-16 11:58:55,123 INFO L226 Difference]: Without dead ends: 89 [2022-11-16 11:58:55,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=144, Invalid=604, Unknown=8, NotChecked=0, Total=756 [2022-11-16 11:58:55,124 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 23 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:58:55,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 116 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 245 Invalid, 8 Unknown, 0 Unchecked, 30.6s Time] [2022-11-16 11:58:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-16 11:58:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2022-11-16 11:58:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 70 states have internal predecessors, (77), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:58:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2022-11-16 11:58:55,164 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 27 [2022-11-16 11:58:55,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:58:55,164 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2022-11-16 11:58:55,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:58:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2022-11-16 11:58:55,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 11:58:55,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:58:55,166 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:55,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:58:55,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:58:55,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:58:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash -238703295, now seen corresponding path program 2 times [2022-11-16 11:58:55,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:55,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141782699] [2022-11-16 11:58:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:55,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:55,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:58:55,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966883483] [2022-11-16 11:58:55,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:58:55,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:58:55,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:58:55,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:58:55,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:58:55,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:58:55,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:58:55,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 11:58:55,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:59:01,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:59:06,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:06,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141782699] [2022-11-16 11:59:06,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:59:06,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966883483] [2022-11-16 11:59:06,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966883483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:06,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:59:06,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 23 [2022-11-16 11:59:06,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539729161] [2022-11-16 11:59:06,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:06,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:59:06,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:06,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:59:06,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=422, Unknown=2, NotChecked=0, Total=506 [2022-11-16 11:59:06,854 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:59:18,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:59:19,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:59:20,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:59:24,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:24,555 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2022-11-16 11:59:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:59:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 36 [2022-11-16 11:59:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:24,557 INFO L225 Difference]: With dead ends: 121 [2022-11-16 11:59:24,558 INFO L226 Difference]: Without dead ends: 119 [2022-11-16 11:59:24,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=251, Invalid=1228, Unknown=3, NotChecked=0, Total=1482 [2022-11-16 11:59:24,559 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:24,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 99 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 322 Invalid, 1 Unknown, 23 Unchecked, 5.2s Time] [2022-11-16 11:59:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-16 11:59:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2022-11-16 11:59:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 95 states have internal predecessors, (105), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 11:59:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2022-11-16 11:59:24,591 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 36 [2022-11-16 11:59:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:24,592 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2022-11-16 11:59:24,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:59:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2022-11-16 11:59:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:59:24,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:24,594 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:24,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:24,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:24,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash 648870724, now seen corresponding path program 3 times [2022-11-16 11:59:24,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:24,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688128875] [2022-11-16 11:59:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:24,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:59:24,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879090924] [2022-11-16 11:59:24,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:59:24,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:24,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:24,817 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:59:24,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:59:24,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:59:24,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:59:24,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:59:24,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:59:25,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 11:59:26,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:26,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688128875] [2022-11-16 11:59:26,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:59:26,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879090924] [2022-11-16 11:59:26,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879090924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:26,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:59:26,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2022-11-16 11:59:26,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706999179] [2022-11-16 11:59:26,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:26,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:59:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:59:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:59:26,352 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:59:27,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:27,068 INFO L93 Difference]: Finished difference Result 118 states and 139 transitions. [2022-11-16 11:59:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:59:27,068 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 45 [2022-11-16 11:59:27,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:27,069 INFO L225 Difference]: With dead ends: 118 [2022-11-16 11:59:27,069 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 11:59:27,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:59:27,072 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:27,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 51 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 90 Invalid, 0 Unknown, 35 Unchecked, 0.2s Time] [2022-11-16 11:59:27,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 11:59:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 11:59:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-16 11:59:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 11:59:27,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2022-11-16 11:59:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:27,074 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:59:27,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:59:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:59:27,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 11:59:27,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:59:27,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:27,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:27,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 11:59:33,629 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 130 DAG size of output: 51 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:59:41,265 WARN L233 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 134 DAG size of output: 51 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-16 11:59:41,280 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse4 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (or (and .cse0 .cse1 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) (exists ((|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| Int) (|aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52| Int)) (let ((.cse6 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| 2))) (let ((.cse3 (+ .cse6 (* 2 |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|)) (.cse2 (+ .cse6 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|))) (and (<= 0 .cse2) (<= 0 (+ (* 2 |ULTIMATE.start_main_~y~0#1|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|)) (< .cse3 2) (not (= .cse3 1)) (<= 0 .cse3) (< .cse2 2) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| 2) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|) (= .cse4 (let ((.cse5 (div |ULTIMATE.start_main_~x~0#1| 2))) (+ |ULTIMATE.start_main_~z~0#1| (* 2 (* .cse5 |ULTIMATE.start_main_~y~0#1|)) (* .cse5 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|) (* 2 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| .cse5)))))))))) (and .cse0 (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse1 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse4) (= |ULTIMATE.start_main_~z~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-11-16 11:59:41,280 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 11:59:41,280 INFO L899 garLoopResultBuilder]: For program point L33-1(lines 32 43) no Hoare annotation was computed. [2022-11-16 11:59:41,281 INFO L902 garLoopResultBuilder]: At program point L46(lines 20 47) the Hoare annotation is: true [2022-11-16 11:59:41,281 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2022-11-16 11:59:41,281 INFO L899 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2022-11-16 11:59:41,281 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 11:59:41,281 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 43) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse4 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (or (and .cse0 .cse1 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) (exists ((|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| Int) (|aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52| Int)) (let ((.cse6 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| 2))) (let ((.cse3 (+ .cse6 (* 2 |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|)) (.cse2 (+ .cse6 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|))) (and (<= 0 .cse2) (<= 0 (+ (* 2 |ULTIMATE.start_main_~y~0#1|) |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|)) (< .cse3 2) (not (= .cse3 1)) (<= 0 .cse3) (< .cse2 2) (< |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| 2) (<= 0 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|) (= .cse4 (let ((.cse5 (div |ULTIMATE.start_main_~x~0#1| 2))) (+ |ULTIMATE.start_main_~z~0#1| (* 2 (* .cse5 |ULTIMATE.start_main_~y~0#1|)) (* .cse5 |aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63|) (* 2 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63| .cse5)))))))))) (and .cse0 (<= 0 |ULTIMATE.start_main_~y~0#1|) .cse1 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse4) (= |ULTIMATE.start_main_~z~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-11-16 11:59:41,281 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 11:59:41,282 INFO L895 garLoopResultBuilder]: At program point L32-3(lines 32 43) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0) (= |ULTIMATE.start_main_~z~0#1| .cse0))) [2022-11-16 11:59:41,282 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 11:59:41,282 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-11-16 11:59:41,282 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 40) no Hoare annotation was computed. [2022-11-16 11:59:41,282 INFO L899 garLoopResultBuilder]: For program point L37-2(lines 37 40) no Hoare annotation was computed. [2022-11-16 11:59:41,282 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2022-11-16 11:59:41,282 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2022-11-16 11:59:41,282 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2022-11-16 11:59:41,282 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2022-11-16 11:59:41,282 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2022-11-16 11:59:41,282 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-11-16 11:59:41,287 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-11-16 11:59:41,290 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:59:41,305 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,306 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,307 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,307 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,307 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,307 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,308 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,308 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,308 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,308 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,308 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,309 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,309 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,309 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,309 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,309 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,310 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,310 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,318 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,319 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,319 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,319 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,319 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,319 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,320 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,320 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,320 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,320 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,321 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,321 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,321 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,321 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,321 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,322 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,322 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,322 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:59:41 BoogieIcfgContainer [2022-11-16 11:59:41,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:59:41,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:59:41,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:59:41,326 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:59:41,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:48" (3/4) ... [2022-11-16 11:59:41,330 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:59:41,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 11:59:41,339 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-16 11:59:41,339 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 11:59:41,339 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:59:41,340 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:59:41,361 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((cond == 1 && 1 <= b) && x % 2 == 0) && (\exists aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 : int, aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 : int, aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52 : int :: (((((((0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 && 0 <= 2 * y + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 < 2) && !(aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 == 1)) && 0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 < 2) && aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 < 2) && 0 <= aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63) && a * b == z + 2 * (x / 2 * y) + x / 2 * aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 + 2 * (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * (x / 2)))) || (((((cond == 1 && 0 <= y) && 1 <= b) && z + x * y == a * b) && z == 0) && a == x) [2022-11-16 11:59:41,369 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:59:41,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:59:41,370 INFO L158 Benchmark]: Toolchain (without parser) took 173194.36ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 96.1MB in the beginning and 143.1MB in the end (delta: -46.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:59:41,370 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory is still 112.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:59:41,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.97ms. Allocated memory is still 140.5MB. Free memory was 96.0MB in the beginning and 113.8MB in the end (delta: -17.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:59:41,371 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.05ms. Allocated memory is still 140.5MB. Free memory was 113.8MB in the beginning and 112.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:59:41,371 INFO L158 Benchmark]: Boogie Preprocessor took 28.82ms. Allocated memory is still 140.5MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:59:41,371 INFO L158 Benchmark]: RCFGBuilder took 385.53ms. Allocated memory is still 140.5MB. Free memory was 111.2MB in the beginning and 101.2MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:59:41,372 INFO L158 Benchmark]: TraceAbstraction took 172361.70ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 100.2MB in the beginning and 145.2MB in the end (delta: -45.0MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB. [2022-11-16 11:59:41,372 INFO L158 Benchmark]: Witness Printer took 43.42ms. Allocated memory is still 182.5MB. Free memory was 145.2MB in the beginning and 143.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:59:41,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 140.5MB. Free memory is still 112.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.97ms. Allocated memory is still 140.5MB. Free memory was 96.0MB in the beginning and 113.8MB in the end (delta: -17.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.05ms. Allocated memory is still 140.5MB. Free memory was 113.8MB in the beginning and 112.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.82ms. Allocated memory is still 140.5MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.53ms. Allocated memory is still 140.5MB. Free memory was 111.2MB in the beginning and 101.2MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 172361.70ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 100.2MB in the beginning and 145.2MB in the end (delta: -45.0MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB. * Witness Printer took 43.42ms. Allocated memory is still 182.5MB. Free memory was 145.2MB in the beginning and 143.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 172.2s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 110.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 14.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 mSolverCounterUnknown, 300 SdHoareTripleChecker+Valid, 50.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 297 mSDsluCounter, 523 SdHoareTripleChecker+Invalid, 49.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 58 IncrementalHoareTripleChecker+Unchecked, 418 mSDsCounter, 154 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1136 IncrementalHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 154 mSolverCounterUnsat, 105 mSDtfsCounter, 1136 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 405 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 93.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=7, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 26 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 26 PreInvPairs, 56 NumberOfFragments, 269 HoareAnnotationTreeSize, 26 FomulaSimplifications, 83 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 4722 FormulaSimplificationTreeSizeReductionInter, 13.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 44.7s InterpolantComputationTime, 195 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 340 ConstructedInterpolants, 3 QuantifiedInterpolants, 3528 SizeOfPredicates, 33 NumberOfNonLiveVariables, 612 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 224/290 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant [2022-11-16 11:59:41,387 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,387 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,387 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,387 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,388 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,388 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,388 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,388 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,388 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,388 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,389 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,389 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,389 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,389 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,389 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,389 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,390 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,390 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,395 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,397 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,397 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,397 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,397 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,397 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,398 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,398 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,398 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,398 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,398 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52,QUANTIFIED] [2022-11-16 11:59:41,399 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,399 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,404 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,404 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,405 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,406 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] [2022-11-16 11:59:41,410 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63,QUANTIFIED] Derived loop invariant: (((cond == 1 && 1 <= b) && x % 2 == 0) && (\exists aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 : int, aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 : int, aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52 : int :: (((((((0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 && 0 <= 2 * y + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 < 2) && !(aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 == 1)) && 0 <= aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + 2 * aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63) && aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * 2 + aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 < 2) && aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 < 2) && 0 <= aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63) && a * b == z + 2 * (x / 2 * y) + x / 2 * aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 + 2 * (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_45_41_52_63 * (x / 2)))) || (((((cond == 1 && 0 <= y) && 1 <= b) && z + x * y == a * b) && z == 0) && a == x) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 11:59:41,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf3c1a7-949d-41fb-8949-c543424d4204/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE