./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/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_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/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_05ec9841-c556-45cd-b4c3-09e4533950fe/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 96b71e4fe20331af08d1b5394215c6ca1c246124118142d0900823a256b0e31d --- 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 11:25:38,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:25:38,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:25:38,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:25:38,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:25:38,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:25:38,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:25:38,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:25:38,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:25:38,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:25:38,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:25:38,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:25:38,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:25:38,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:25:38,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:25:38,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:25:38,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:25:38,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:25:38,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:25:38,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:25:38,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:25:38,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:25:38,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:25:38,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:25:38,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:25:38,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:25:38,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:25:38,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:25:38,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:25:38,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:25:38,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:25:38,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:25:38,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:25:38,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:25:38,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:25:38,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:25:38,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:25:38,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:25:38,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:25:38,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:25:38,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:25:38,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:25:38,528 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:25:38,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:25:38,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:25:38,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:25:38,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:25:38,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:25:38,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:25:38,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:25:38,531 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:25:38,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:25:38,532 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:25:38,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:25:38,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:25:38,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:25:38,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:25:38,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:25:38,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:25:38,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:25:38,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:25:38,533 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:25:38,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:25:38,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:25:38,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:25:38,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:25:38,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:25:38,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:25:38,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:25:38,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:25:38,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:25:38,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:25:38,548 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:25:38,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:25:38,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:25:38,549 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_05ec9841-c556-45cd-b4c3-09e4533950fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96b71e4fe20331af08d1b5394215c6ca1c246124118142d0900823a256b0e31d [2022-11-16 11:25:38,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:25:38,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:25:38,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:25:38,829 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:25:38,830 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:25:38,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2022-11-16 11:25:38,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/data/29b322f53/dd92231909364b7794c06b6f89ee5688/FLAGb0c8aac15 [2022-11-16 11:25:39,350 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:25:39,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2022-11-16 11:25:39,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/data/29b322f53/dd92231909364b7794c06b6f89ee5688/FLAGb0c8aac15 [2022-11-16 11:25:39,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/data/29b322f53/dd92231909364b7794c06b6f89ee5688 [2022-11-16 11:25:39,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:25:39,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:25:39,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:25:39,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:25:39,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:25:39,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:25:39" (1/1) ... [2022-11-16 11:25:39,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa395fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:39, skipping insertion in model container [2022-11-16 11:25:39,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:25:39" (1/1) ... [2022-11-16 11:25:39,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:25:39,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:25:39,977 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_05ec9841-c556-45cd-b4c3-09e4533950fe/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c[524,537] [2022-11-16 11:25:39,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:25:40,007 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:25:40,019 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_05ec9841-c556-45cd-b4c3-09e4533950fe/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound10.c[524,537] [2022-11-16 11:25:40,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:25:40,050 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:25:40,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40 WrapperNode [2022-11-16 11:25:40,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:25:40,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:25:40,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:25:40,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:25:40,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,083 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2022-11-16 11:25:40,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:25:40,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:25:40,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:25:40,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:25:40,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:25:40,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:25:40,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:25:40,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:25:40,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (1/1) ... [2022-11-16 11:25:40,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:25:40,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:40,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:25:40,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:25:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:25:40,192 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:25:40,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:25:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:25:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:25:40,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:25:40,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:25:40,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:25:40,252 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:25:40,254 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:25:40,389 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:25:40,395 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:25:40,396 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:25:40,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:40 BoogieIcfgContainer [2022-11-16 11:25:40,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:25:40,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:25:40,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:25:40,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:25:40,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:25:39" (1/3) ... [2022-11-16 11:25:40,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550f53fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:25:40, skipping insertion in model container [2022-11-16 11:25:40,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:25:40" (2/3) ... [2022-11-16 11:25:40,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550f53fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:25:40, skipping insertion in model container [2022-11-16 11:25:40,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:40" (3/3) ... [2022-11-16 11:25:40,407 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound10.c [2022-11-16 11:25:40,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:25:40,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:25:40,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:25:40,502 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;@1ab7d81a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:25:40,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:25:40,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:25:40,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:25:40,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:40,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:40,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:40,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times [2022-11-16 11:25:40,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:40,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182992176] [2022-11-16 11:25:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:40,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:40,655 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:40,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199550821] [2022-11-16 11:25:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:40,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:40,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:40,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:25:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:40,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:25:40,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:25:40,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:25:40,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:40,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182992176] [2022-11-16 11:25:40,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:40,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199550821] [2022-11-16 11:25:40,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199550821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:40,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:40,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:25:40,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129411978] [2022-11-16 11:25:40,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:40,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:25:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:40,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:25:40,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:25:40,897 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:25:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:40,917 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-11-16 11:25:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:25:40,920 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-16 11:25:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:40,928 INFO L225 Difference]: With dead ends: 47 [2022-11-16 11:25:40,942 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 11:25:40,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 11:25:40,949 INFO L413 NwaCegarLoop]: 29 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, 29 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 11:25:40,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:25:40,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 11:25:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 11:25:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:25:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-16 11:25:40,988 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2022-11-16 11:25:40,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:40,989 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-16 11:25:40,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:25:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-16 11:25:40,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:25:40,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:40,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:41,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:41,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 11:25:41,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:41,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1345709874, now seen corresponding path program 1 times [2022-11-16 11:25:41,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:41,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840376540] [2022-11-16 11:25:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:41,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:41,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:41,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844639999] [2022-11-16 11:25:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:41,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:41,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:41,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:41,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:25:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:41,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:25:41,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:25:41,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:25:41,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:41,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840376540] [2022-11-16 11:25:41,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:41,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844639999] [2022-11-16 11:25:41,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844639999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:41,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:41,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:25:41,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609653162] [2022-11-16 11:25:41,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:41,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:25:41,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:41,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:25:41,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:41,437 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:25:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:41,467 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-11-16 11:25:41,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:25:41,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-16 11:25:41,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:41,469 INFO L225 Difference]: With dead ends: 30 [2022-11-16 11:25:41,469 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 11:25:41,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:25:41,471 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:41,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:25:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 11:25:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-16 11:25:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:25:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-16 11:25:41,479 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2022-11-16 11:25:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:41,480 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-16 11:25:41,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:25:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-16 11:25:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:25:41,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:41,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:41,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:25:41,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:41,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:41,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:41,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1347497334, now seen corresponding path program 1 times [2022-11-16 11:25:41,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:41,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910903118] [2022-11-16 11:25:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:41,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:41,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:41,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46480765] [2022-11-16 11:25:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:41,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:41,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:41,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:41,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:25:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:41,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:25:41,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:25:42,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:25:42,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:42,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910903118] [2022-11-16 11:25:42,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:42,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46480765] [2022-11-16 11:25:42,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46480765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:25:42,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:25:42,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:25:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539190910] [2022-11-16 11:25:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:25:42,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:25:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:42,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:25:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:25:42,164 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:25:43,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:43,497 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-11-16 11:25:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:25:43,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-16 11:25:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:43,500 INFO L225 Difference]: With dead ends: 35 [2022-11-16 11:25:43,500 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 11:25:43,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:25:43,502 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:43,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 79 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:25:43,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 11:25:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-11-16 11:25:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:25:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-11-16 11:25:43,515 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 19 [2022-11-16 11:25:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:43,515 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-16 11:25:43,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:25:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-11-16 11:25:43,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:25:43,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:43,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:43,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:43,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:43,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:43,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1636478750, now seen corresponding path program 1 times [2022-11-16 11:25:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:43,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254399129] [2022-11-16 11:25:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:43,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:43,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:43,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7266073] [2022-11-16 11:25:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:43,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:43,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:43,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:43,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:25:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:43,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:25:43,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:25:43,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:25:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:44,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254399129] [2022-11-16 11:25:44,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:44,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7266073] [2022-11-16 11:25:44,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7266073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:44,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:44,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-11-16 11:25:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780559999] [2022-11-16 11:25:44,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:44,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:25:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:44,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:25:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:25:44,119 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:25:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:44,266 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-11-16 11:25:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:25:44,266 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2022-11-16 11:25:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:44,267 INFO L225 Difference]: With dead ends: 39 [2022-11-16 11:25:44,267 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 11:25:44,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:25:44,269 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:44,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 85 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:25:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 11:25:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 25. [2022-11-16 11:25:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:25:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-16 11:25:44,280 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 25 [2022-11-16 11:25:44,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:44,280 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-16 11:25:44,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 11:25:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-11-16 11:25:44,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 11:25:44,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:44,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:44,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:44,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:44,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash -126969667, now seen corresponding path program 1 times [2022-11-16 11:25:44,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:44,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568217759] [2022-11-16 11:25:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:44,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:44,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570434138] [2022-11-16 11:25:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:44,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:44,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:44,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:44,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:25:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:25:44,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:25:44,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:25:44,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:25:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:44,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568217759] [2022-11-16 11:25:44,688 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:44,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570434138] [2022-11-16 11:25:44,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570434138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:44,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:44,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-16 11:25:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737268324] [2022-11-16 11:25:44,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:44,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:25:44,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:25:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:25:44,691 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:25:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:44,802 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-11-16 11:25:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:25:44,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2022-11-16 11:25:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:44,804 INFO L225 Difference]: With dead ends: 57 [2022-11-16 11:25:44,804 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 11:25:44,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:25:44,805 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 39 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:44,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 101 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:25:44,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 11:25:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-16 11:25:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:25:44,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-11-16 11:25:44,826 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 28 [2022-11-16 11:25:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:44,826 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-11-16 11:25:44,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:25:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-11-16 11:25:44,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 11:25:44,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:44,828 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:44,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:45,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:45,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:45,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:45,034 INFO L85 PathProgramCache]: Analyzing trace with hash 972990450, now seen corresponding path program 2 times [2022-11-16 11:25:45,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:45,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003948192] [2022-11-16 11:25:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:45,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:45,049 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:45,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896648664] [2022-11-16 11:25:45,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:25:45,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:45,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:45,053 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:45,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:25:45,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:25:45,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:25:45,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:25:45,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:25:45,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:25:45,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:25:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003948192] [2022-11-16 11:25:45,421 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896648664] [2022-11-16 11:25:45,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896648664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:25:45,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:45,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-16 11:25:45,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039350769] [2022-11-16 11:25:45,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:45,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:25:45,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:25:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:25:45,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:25:45,424 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-16 11:25:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:45,698 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2022-11-16 11:25:45,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:25:45,698 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 55 [2022-11-16 11:25:45,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:45,700 INFO L225 Difference]: With dead ends: 111 [2022-11-16 11:25:45,700 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 11:25:45,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:25:45,702 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 111 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:45,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 136 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:25:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 11:25:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-16 11:25:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:25:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2022-11-16 11:25:45,736 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 55 [2022-11-16 11:25:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:45,737 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2022-11-16 11:25:45,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-16 11:25:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2022-11-16 11:25:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 11:25:45,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:45,739 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:45,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:45,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:45,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:25:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1909967598, now seen corresponding path program 3 times [2022-11-16 11:25:45,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:25:45,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358635134] [2022-11-16 11:25:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:25:45,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:25:45,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:25:45,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070460450] [2022-11-16 11:25:45,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:25:45,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:45,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:45,962 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:45,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:25:47,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 11:25:47,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-16 11:25:47,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:25:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:25:48,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:25:48,080 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:25:48,081 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:25:48,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:48,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:25:48,296 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-11-16 11:25:48,299 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:25:48,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:25:48 BoogieIcfgContainer [2022-11-16 11:25:48,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:25:48,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:25:48,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:25:48,405 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:25:48,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:25:40" (3/4) ... [2022-11-16 11:25:48,409 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 11:25:48,522 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:25:48,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:25:48,523 INFO L158 Benchmark]: Toolchain (without parser) took 8761.83ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 75.0MB in the beginning and 116.6MB in the end (delta: -41.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:25:48,523 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:25:48,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.37ms. Allocated memory is still 121.6MB. Free memory was 74.8MB in the beginning and 93.8MB in the end (delta: -19.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 11:25:48,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.50ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 92.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:25:48,524 INFO L158 Benchmark]: Boogie Preprocessor took 18.98ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 91.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:25:48,524 INFO L158 Benchmark]: RCFGBuilder took 293.39ms. Allocated memory is still 121.6MB. Free memory was 91.2MB in the beginning and 80.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:25:48,525 INFO L158 Benchmark]: TraceAbstraction took 8004.42ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 79.6MB in the beginning and 121.8MB in the end (delta: -42.2MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. [2022-11-16 11:25:48,525 INFO L158 Benchmark]: Witness Printer took 117.44ms. Allocated memory is still 148.9MB. Free memory was 121.8MB in the beginning and 116.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:25:48,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.37ms. Allocated memory is still 121.6MB. Free memory was 74.8MB in the beginning and 93.8MB in the end (delta: -19.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.50ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 92.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.98ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 91.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.39ms. Allocated memory is still 121.6MB. Free memory was 91.2MB in the beginning and 80.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8004.42ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 79.6MB in the beginning and 121.8MB in the end (delta: -42.2MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. * Witness Printer took 117.44ms. Allocated memory is still 148.9MB. Free memory was 121.8MB in the beginning and 116.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(cond)=1, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [A=2603, counter=0, R=52] [L28] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L28] RET assume_abort_if_not(A % 2 == 1) VAL [A=2603, counter=0, R=52] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [A=2603, counter=0, R=52, r=101, u=105, v=1] [L34] EXPR counter++ VAL [A=2603, counter=1, counter++=0, r=101, R=52, u=105, v=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=1, R=52, r=101, u=105, v=1] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=1, r=101, R=52, u=105, v=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=1, R=52, r=100, u=105, v=3] [L34] EXPR counter++ VAL [A=2603, counter=2, counter++=1, r=100, R=52, u=105, v=3] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=2, r=100, R=52, u=105, v=3] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=2, R=52, r=100, u=105, v=3] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=2, R=52, r=97, u=105, v=5] [L34] EXPR counter++ VAL [A=2603, counter=3, counter++=2, r=97, R=52, u=105, v=5] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=3, r=97, R=52, u=105, v=5] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=3, R=52, r=97, u=105, v=5] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=3, r=92, R=52, u=105, v=7] [L34] EXPR counter++ VAL [A=2603, counter=4, counter++=3, r=92, R=52, u=105, v=7] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=4, R=52, r=92, u=105, v=7] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=4, r=92, R=52, u=105, v=7] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=4, R=52, r=85, u=105, v=9] [L34] EXPR counter++ VAL [A=2603, counter=5, counter++=4, R=52, r=85, u=105, v=9] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=5, r=85, R=52, u=105, v=9] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=5, r=85, R=52, u=105, v=9] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=5, r=76, R=52, u=105, v=11] [L34] EXPR counter++ VAL [A=2603, counter=6, counter++=5, R=52, r=76, u=105, v=11] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=6, R=52, r=76, u=105, v=11] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=6, R=52, r=76, u=105, v=11] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=6, r=65, R=52, u=105, v=13] [L34] EXPR counter++ VAL [A=2603, counter=7, counter++=6, r=65, R=52, u=105, v=13] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=7, R=52, r=65, u=105, v=13] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=7, R=52, r=65, u=105, v=13] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=7, R=52, r=52, u=105, v=15] [L34] EXPR counter++ VAL [A=2603, counter=8, counter++=7, r=52, R=52, u=105, v=15] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=8, R=52, r=52, u=105, v=15] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=8, R=52, r=52, u=105, v=15] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=8, R=52, r=37, u=105, v=17] [L34] EXPR counter++ VAL [A=2603, counter=9, counter++=8, r=37, R=52, u=105, v=17] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=9, R=52, r=37, u=105, v=17] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=9, R=52, r=37, u=105, v=17] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=9, r=20, R=52, u=105, v=19] [L34] EXPR counter++ VAL [A=2603, counter=10, counter++=9, r=20, R=52, u=105, v=19] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [A=2603, counter=10, r=20, R=52, u=105, v=19] [L36] COND FALSE !(!(r != 0)) VAL [A=2603, counter=10, R=52, r=20, u=105, v=19] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [A=2603, counter=10, r=1, R=52, u=105, v=21] [L34] EXPR counter++ VAL [A=2603, counter=11, counter++=10, r=1, R=52, u=105, v=21] [L34] COND FALSE !(counter++<10) [L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, counter=11] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L14] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 200 mSDsluCounter, 487 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 346 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 232 IncrementalHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 141 mSDtfsCounter, 232 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 737 SizeOfPredicates, 15 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 82/188 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 11:25:48,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ec9841-c556-45cd-b4c3-09e4533950fe/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE