./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.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_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/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_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/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_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/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 a93c350e5795e32421c3bef9d7525c3fd53f570f971d574def19132b3d6f08b8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:56:22,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:56:22,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:56:22,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:56:22,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:56:22,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:56:22,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:56:22,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:56:22,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:56:22,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:56:22,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:56:22,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:56:22,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:56:22,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:56:22,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:56:22,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:56:22,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:56:22,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:56:22,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:56:22,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:56:22,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:56:22,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:56:22,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:56:22,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:56:22,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:56:22,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:56:22,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:56:22,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:56:22,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:56:22,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:56:22,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:56:22,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:56:22,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:56:22,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:56:22,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:56:22,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:56:22,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:56:22,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:56:22,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:56:22,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:56:22,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:56:22,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:56:22,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:56:22,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:56:22,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:56:22,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:56:22,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:56:22,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:56:22,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:56:22,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:56:22,987 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:56:22,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:56:22,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:56:22,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:56:22,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:56:22,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:56:22,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:56:22,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:56:22,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:56:22,989 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:56:22,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:56:22,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:56:22,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:56:22,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:56:22,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:56:22,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:56:22,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:56:22,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:56:22,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:56:22,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:56:22,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:56:22,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:56:22,993 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:56:22,994 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:56:22,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:56:22,994 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_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a93c350e5795e32421c3bef9d7525c3fd53f570f971d574def19132b3d6f08b8 [2022-11-16 11:56:23,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:56:23,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:56:23,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:56:23,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:56:23,345 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:56:23,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2022-11-16 11:56:23,442 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/data/cb77522a2/bbd6d0cc7d5f41fba587784c5be7c7d0/FLAG883363f1e [2022-11-16 11:56:23,833 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:56:23,833 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c [2022-11-16 11:56:23,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/data/cb77522a2/bbd6d0cc7d5f41fba587784c5be7c7d0/FLAG883363f1e [2022-11-16 11:56:24,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/data/cb77522a2/bbd6d0cc7d5f41fba587784c5be7c7d0 [2022-11-16 11:56:24,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:56:24,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:56:24,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:24,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:56:24,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:56:24,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a423ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24, skipping insertion in model container [2022-11-16 11:56:24,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:56:24,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:56:24,478 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_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2022-11-16 11:56:24,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:24,524 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:56:24,540 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_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound5.c[538,551] [2022-11-16 11:56:24,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:56:24,578 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:56:24,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24 WrapperNode [2022-11-16 11:56:24,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:56:24,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:24,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:56:24,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:56:24,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,613 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-11-16 11:56:24,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:56:24,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:56:24,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:56:24,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:56:24,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:56:24,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:56:24,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:56:24,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:56:24,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (1/1) ... [2022-11-16 11:56:24,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:56:24,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:24,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:56:24,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:56:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:56:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:56:24,704 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:56:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:56:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:56:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:56:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:56:24,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:56:24,769 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:56:24,771 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:56:25,001 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:56:25,008 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:56:25,008 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:56:25,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:25 BoogieIcfgContainer [2022-11-16 11:56:25,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:56:25,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:56:25,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:56:25,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:56:25,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:56:24" (1/3) ... [2022-11-16 11:56:25,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb0c267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:25, skipping insertion in model container [2022-11-16 11:56:25,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:24" (2/3) ... [2022-11-16 11:56:25,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb0c267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:25, skipping insertion in model container [2022-11-16 11:56:25,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:56:25" (3/3) ... [2022-11-16 11:56:25,020 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound5.c [2022-11-16 11:56:25,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:56:25,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:56:25,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:56:25,093 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;@1222f419, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:56:25,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:56:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:56:25,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:56:25,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:25,106 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:25,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2022-11-16 11:56:25,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:25,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643807171] [2022-11-16 11:56:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:25,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:25,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:56:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:25,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:56:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:56:25,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:25,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643807171] [2022-11-16 11:56:25,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643807171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:25,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:25,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:56:25,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108972712] [2022-11-16 11:56:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:25,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:56:25,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:56:25,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:56:25,482 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:56:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:25,525 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2022-11-16 11:56:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:56:25,527 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-16 11:56:25,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:25,545 INFO L225 Difference]: With dead ends: 63 [2022-11-16 11:56:25,546 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 11:56:25,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:56:25,559 INFO L413 NwaCegarLoop]: 43 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, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:25,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:56:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 11:56:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 11:56:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:56:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-11-16 11:56:25,620 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2022-11-16 11:56:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:25,621 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-11-16 11:56:25,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:56:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-11-16 11:56:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:56:25,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:25,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:25,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:56:25,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:25,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2022-11-16 11:56:25,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:25,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827010856] [2022-11-16 11:56:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:25,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:56:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:25,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:56:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:56:25,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:25,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827010856] [2022-11-16 11:56:25,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827010856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:25,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:25,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:56:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252162020] [2022-11-16 11:56:25,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:25,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:56:25,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:25,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:56:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:56:25,853 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:25,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:25,941 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-16 11:56:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:56:25,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-11-16 11:56:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:25,943 INFO L225 Difference]: With dead ends: 42 [2022-11-16 11:56:25,944 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 11:56:25,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:56:25,946 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:25,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 128 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:56:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 11:56:25,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-16 11:56:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:56:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-16 11:56:25,969 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2022-11-16 11:56:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:25,970 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-16 11:56:25,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:56:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-16 11:56:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:56:25,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:25,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:25,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:56:25,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2022-11-16 11:56:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:25,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628806610] [2022-11-16 11:56:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:56:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:56:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:56:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:56:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:56:26,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:26,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628806610] [2022-11-16 11:56:26,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628806610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:26,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:26,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:56:26,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872458575] [2022-11-16 11:56:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:26,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:56:26,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:26,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:56:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:56:26,156 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:56:26,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:26,226 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-11-16 11:56:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:56:26,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-11-16 11:56:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:26,229 INFO L225 Difference]: With dead ends: 46 [2022-11-16 11:56:26,229 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 11:56:26,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:56:26,231 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:26,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 123 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:56:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 11:56:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-11-16 11:56:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:56:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-11-16 11:56:26,243 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2022-11-16 11:56:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:26,244 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-16 11:56:26,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:56:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-11-16 11:56:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 11:56:26,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:26,245 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:26,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:56:26,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:26,247 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2022-11-16 11:56:26,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:26,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487312594] [2022-11-16 11:56:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:26,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:26,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:56:26,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764080971] [2022-11-16 11:56:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:26,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:26,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:26,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:26,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:56:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:26,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:56:26,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:56:26,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:56:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:26,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487312594] [2022-11-16 11:56:26,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:56:26,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764080971] [2022-11-16 11:56:26,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764080971] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:56:26,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:56:26,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-16 11:56:26,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55065142] [2022-11-16 11:56:26,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:26,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:56:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:26,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:56:26,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:56:26,767 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-16 11:56:29,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 11:56:29,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:29,945 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2022-11-16 11:56:29,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:56:29,946 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 34 [2022-11-16 11:56:29,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:29,948 INFO L225 Difference]: With dead ends: 72 [2022-11-16 11:56:29,949 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 11:56:29,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:56:29,950 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:29,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 137 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 184 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 11:56:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 11:56:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-11-16 11:56:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 11:56:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-16 11:56:29,967 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 34 [2022-11-16 11:56:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:29,967 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-16 11:56:29,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-16 11:56:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-11-16 11:56:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 11:56:29,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:29,969 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:29,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:56:30,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-16 11:56:30,175 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:30,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2022-11-16 11:56:30,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:30,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551099092] [2022-11-16 11:56:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:30,195 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:56:30,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759077076] [2022-11-16 11:56:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:30,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:30,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:30,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:30,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:56:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:30,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:56:30,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:56:30,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 11:56:31,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:31,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551099092] [2022-11-16 11:56:31,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:56:31,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759077076] [2022-11-16 11:56:31,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759077076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:56:31,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:56:31,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-11-16 11:56:31,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424774596] [2022-11-16 11:56:31,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:56:31,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:56:31,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:56:31,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:56:31,391 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-16 11:56:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:32,468 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2022-11-16 11:56:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:56:32,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 41 [2022-11-16 11:56:32,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:32,473 INFO L225 Difference]: With dead ends: 69 [2022-11-16 11:56:32,473 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 11:56:32,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:56:32,475 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:32,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 100 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:56:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 11:56:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-16 11:56:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 11:56:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-11-16 11:56:32,512 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 41 [2022-11-16 11:56:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:32,513 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-16 11:56:32,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-16 11:56:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-11-16 11:56:32,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:56:32,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:32,516 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:32,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:32,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:32,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:32,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:32,724 INFO L85 PathProgramCache]: Analyzing trace with hash -677073599, now seen corresponding path program 1 times [2022-11-16 11:56:32,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:32,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226435724] [2022-11-16 11:56:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:32,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:32,752 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:56:32,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600709178] [2022-11-16 11:56:32,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:32,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:32,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:32,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:56:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:32,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:56:32,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-16 11:56:32,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:56:32,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:56:32,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226435724] [2022-11-16 11:56:32,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:56:32,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600709178] [2022-11-16 11:56:32,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600709178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:56:32,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:56:32,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:56:32,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63133683] [2022-11-16 11:56:32,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:56:32,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:56:32,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:56:32,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:56:32,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:56:32,916 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:56:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:56:33,002 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-11-16 11:56:33,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:56:33,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2022-11-16 11:56:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:56:33,004 INFO L225 Difference]: With dead ends: 70 [2022-11-16 11:56:33,004 INFO L226 Difference]: Without dead ends: 63 [2022-11-16 11:56:33,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:56:33,005 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:56:33,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:56:33,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-16 11:56:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-16 11:56:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 11:56:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-11-16 11:56:33,046 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 69 [2022-11-16 11:56:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:56:33,046 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-11-16 11:56:33,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:56:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-11-16 11:56:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 11:56:33,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:56:33,057 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:56:33,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:56:33,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:33,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:56:33,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:56:33,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2022-11-16 11:56:33,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:56:33,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050437526] [2022-11-16 11:56:33,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:33,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:56:33,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:56:33,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287585253] [2022-11-16 11:56:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:56:33,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:56:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:56:33,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:56:33,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:56:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:56:33,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 11:56:33,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:56:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 42 proven. 8 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-16 11:56:34,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:56:52,768 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse11 (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296))) (or (let ((.cse7 (= (mod |c_ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse12 (div |c_ULTIMATE.start_main_~d~0#1| 2)) (.cse13 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse2 (+ .cse12 .cse13)) (.cse5 (not .cse7)) (.cse6 (+ .cse12 .cse13 1)) (.cse8 (* .cse11 |c_ULTIMATE.start_main_~q~0#1|)) (.cse9 (* (div |c_ULTIMATE.start_main_~p~0#1| 2) .cse11)) (.cse1 (< |c_ULTIMATE.start_main_~p~0#1| 0)) (.cse0 (= (mod |c_ULTIMATE.start_main_~p~0#1| 2) 0))) (and (or (and (not .cse0) .cse1) (let ((.cse3 (+ .cse8 |c_ULTIMATE.start_main_~r~0#1| .cse9)) (.cse4 (< |c_ULTIMATE.start_main_~d~0#1| 0))) (and (or (= .cse2 .cse3) (and .cse4 .cse5)) (or (= .cse3 .cse6) .cse7 (not .cse4))))) (or (let ((.cse10 (+ .cse8 .cse11 |c_ULTIMATE.start_main_~r~0#1| .cse9))) (and (or (= .cse2 .cse10) .cse5) (or (= .cse10 .cse6) .cse7))) (not .cse1) .cse0)))) (not (= |c_ULTIMATE.start_main_~d~0#1| (* |c_ULTIMATE.start_main_~p~0#1| .cse11))))) is different from true [2022-11-16 11:57:51,476 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse11 (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296))) (or (let ((.cse7 (= (mod |c_ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse12 (div |c_ULTIMATE.start_main_~d~0#1| 2)) (.cse13 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse2 (+ .cse12 .cse13)) (.cse5 (not .cse7)) (.cse6 (+ .cse12 .cse13 1)) (.cse8 (* .cse11 |c_ULTIMATE.start_main_~q~0#1|)) (.cse9 (* (div |c_ULTIMATE.start_main_~p~0#1| 2) .cse11)) (.cse1 (< |c_ULTIMATE.start_main_~p~0#1| 0)) (.cse0 (= (mod |c_ULTIMATE.start_main_~p~0#1| 2) 0))) (and (or (and (not .cse0) .cse1) (let ((.cse3 (+ .cse8 |c_ULTIMATE.start_main_~r~0#1| .cse9)) (.cse4 (< |c_ULTIMATE.start_main_~d~0#1| 0))) (and (or (= .cse2 .cse3) (and .cse4 .cse5)) (or (= .cse3 .cse6) .cse7 (not .cse4))))) (or (let ((.cse10 (+ .cse8 .cse11 |c_ULTIMATE.start_main_~r~0#1| .cse9))) (and (or (= .cse2 .cse10) .cse5) (or (= .cse10 .cse6) .cse7))) (not .cse1) .cse0)))) (<= |c_ULTIMATE.start_main_~d~0#1| |c_ULTIMATE.start_main_~r~0#1|) (not (= |c_ULTIMATE.start_main_~d~0#1| (* |c_ULTIMATE.start_main_~p~0#1| .cse11))))) is different from true [2022-11-16 11:59:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 7 not checked. [2022-11-16 11:59:09,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:09,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050437526] [2022-11-16 11:59:09,280 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:59:09,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287585253] [2022-11-16 11:59:09,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287585253] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:09,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:59:09,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2022-11-16 11:59:09,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288320990] [2022-11-16 11:59:09,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:09,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:59:09,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:09,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:59:09,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=351, Unknown=2, NotChecked=78, Total=506 [2022-11-16 11:59:09,283 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2022-11-16 11:59:17,625 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 61 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:59:20,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:20,825 INFO L93 Difference]: Finished difference Result 118 states and 145 transitions. [2022-11-16 11:59:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:59:20,826 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) Word has length 71 [2022-11-16 11:59:20,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:20,828 INFO L225 Difference]: With dead ends: 118 [2022-11-16 11:59:20,828 INFO L226 Difference]: Without dead ends: 100 [2022-11-16 11:59:20,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=171, Invalid=765, Unknown=2, NotChecked=118, Total=1056 [2022-11-16 11:59:20,830 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 84 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:20,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 123 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 549 Invalid, 0 Unknown, 144 Unchecked, 3.0s Time] [2022-11-16 11:59:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-16 11:59:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2022-11-16 11:59:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 60 states have internal predecessors, (62), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:59:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2022-11-16 11:59:20,867 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 71 [2022-11-16 11:59:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:20,868 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2022-11-16 11:59:20,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2022-11-16 11:59:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2022-11-16 11:59:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 11:59:20,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:20,871 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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 11:59:20,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:21,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:21,078 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:21,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2022-11-16 11:59:21,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:21,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376014957] [2022-11-16 11:59:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:21,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:21,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:59:21,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309531348] [2022-11-16 11:59:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:21,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:21,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:21,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:59:21,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:59:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:21,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 11:59:21,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-16 11:59:21,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-16 11:59:24,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:24,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376014957] [2022-11-16 11:59:24,417 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:59:24,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309531348] [2022-11-16 11:59:24,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309531348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:24,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:59:24,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-11-16 11:59:24,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519798442] [2022-11-16 11:59:24,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:24,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:59:24,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:24,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:59:24,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:59:24,420 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-16 11:59:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:28,044 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2022-11-16 11:59:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:59:28,045 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 82 [2022-11-16 11:59:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:28,046 INFO L225 Difference]: With dead ends: 127 [2022-11-16 11:59:28,047 INFO L226 Difference]: Without dead ends: 97 [2022-11-16 11:59:28,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:59:28,049 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:28,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 256 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:59:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-16 11:59:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2022-11-16 11:59:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 11:59:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-11-16 11:59:28,077 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 82 [2022-11-16 11:59:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:28,078 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-11-16 11:59:28,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-16 11:59:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-11-16 11:59:28,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 11:59:28,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:28,080 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:28,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:28,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:28,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:28,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:28,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1888027627, now seen corresponding path program 2 times [2022-11-16 11:59:28,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:28,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329681612] [2022-11-16 11:59:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:28,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:28,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:59:28,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853428320] [2022-11-16 11:59:28,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:59:28,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:28,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:28,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:59:28,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:59:28,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:59:28,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:59:28,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:59:28,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-16 11:59:28,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-16 11:59:28,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329681612] [2022-11-16 11:59:28,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:59:28,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853428320] [2022-11-16 11:59:28,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853428320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:28,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:59:28,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2022-11-16 11:59:28,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449000465] [2022-11-16 11:59:28,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:28,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:59:28,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:59:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:59:28,603 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 11:59:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:59:28,689 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2022-11-16 11:59:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:59:28,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 84 [2022-11-16 11:59:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:59:28,699 INFO L225 Difference]: With dead ends: 108 [2022-11-16 11:59:28,699 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 11:59:28,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:59:28,703 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:59:28,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:59:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 11:59:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-16 11:59:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 11:59:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2022-11-16 11:59:28,759 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 84 [2022-11-16 11:59:28,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:59:28,759 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2022-11-16 11:59:28,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 11:59:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2022-11-16 11:59:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 11:59:28,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:59:28,762 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:28,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 11:59:28,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:28,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:59:28,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 3 times [2022-11-16 11:59:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:28,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401713929] [2022-11-16 11:59:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:28,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:28,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:59:28,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448196850] [2022-11-16 11:59:28,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:59:28,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:28,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:28,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:59:29,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d5d0a8d-8f35-444f-93be-e83b3ce40fc7/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:59:29,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:59:29,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:59:29,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-16 11:59:29,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 64 proven. 28 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-16 11:59:30,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:07,505 WARN L233 SmtUtils]: Spent 22.90s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:01:13,743 WARN L233 SmtUtils]: Spent 18.73s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:02:49,263 WARN L233 SmtUtils]: Spent 39.52s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:08:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 61 proven. 25 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-16 12:08:34,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:34,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401713929] [2022-11-16 12:08:34,104 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:34,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448196850] [2022-11-16 12:08:34,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448196850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:34,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:08:34,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2022-11-16 12:08:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515984390] [2022-11-16 12:08:34,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:34,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:08:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:08:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=493, Unknown=6, NotChecked=0, Total=600 [2022-11-16 12:08:34,107 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 22 states have internal predecessors, (51), 12 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (32), 12 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-16 12:08:39,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:08:41,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:08:43,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:08:46,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:08:49,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:09:46,471 WARN L233 SmtUtils]: Spent 55.84s on a formula simplification. DAG size of input: 178 DAG size of output: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:09:50,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:09:55,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:09:58,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:10:00,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:10:12,826 WARN L233 SmtUtils]: Spent 8.96s on a formula simplification. DAG size of input: 67 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:10:14,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:10:22,508 WARN L233 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 88 DAG size of output: 68 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:10:25,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:10:27,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:10:29,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:10:31,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:10:35,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:11:29,162 WARN L233 SmtUtils]: Spent 45.44s on a formula simplification. DAG size of input: 132 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:11:35,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []