./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-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_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/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_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/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_08b90fd7-d287-46a2-bcf6-9fe209955e67/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 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd --- 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 12:28:50,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:28:50,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:28:50,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:28:50,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:28:50,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:28:50,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:28:50,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:28:50,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:28:50,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:28:50,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:28:50,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:28:50,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:28:50,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:28:50,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:28:50,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:28:50,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:28:50,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:28:50,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:28:51,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:28:51,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:28:51,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:28:51,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:28:51,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:28:51,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:28:51,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:28:51,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:28:51,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:28:51,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:28:51,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:28:51,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:28:51,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:28:51,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:28:51,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:28:51,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:28:51,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:28:51,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:28:51,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:28:51,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:28:51,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:28:51,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:28:51,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:28:51,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:28:51,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:28:51,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:28:51,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:28:51,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:28:51,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:28:51,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:28:51,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:28:51,081 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:28:51,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:28:51,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:28:51,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:28:51,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:28:51,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:28:51,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:28:51,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:28:51,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:28:51,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:28:51,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:28:51,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:28:51,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:28:51,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:28:51,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:28:51,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:28:51,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:51,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:28:51,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:28:51,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:28:51,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:28:51,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:28:51,088 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:28:51,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:28:51,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:28:51,089 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_08b90fd7-d287-46a2-bcf6-9fe209955e67/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd [2022-11-16 12:28:51,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:28:51,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:28:51,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:28:51,444 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:28:51,444 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:28:51,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2022-11-16 12:28:51,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/data/418cf66de/0aad1d7117ce4b1da9f67b22c5343b42/FLAG8abfc8e23 [2022-11-16 12:28:52,063 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:28:52,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2022-11-16 12:28:52,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/data/418cf66de/0aad1d7117ce4b1da9f67b22c5343b42/FLAG8abfc8e23 [2022-11-16 12:28:52,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/data/418cf66de/0aad1d7117ce4b1da9f67b22c5343b42 [2022-11-16 12:28:52,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:28:52,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:28:52,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:52,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:28:52,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:28:52,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f510363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52, skipping insertion in model container [2022-11-16 12:28:52,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:28:52,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:28:52,637 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_08b90fd7-d287-46a2-bcf6-9fe209955e67/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2022-11-16 12:28:52,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:52,662 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:28:52,674 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_08b90fd7-d287-46a2-bcf6-9fe209955e67/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2022-11-16 12:28:52,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:52,695 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:28:52,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52 WrapperNode [2022-11-16 12:28:52,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:52,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:52,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:28:52,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:28:52,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,729 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-16 12:28:52,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:52,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:28:52,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:28:52,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:28:52,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,757 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:28:52,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:28:52,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:28:52,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:28:52,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (1/1) ... [2022-11-16 12:28:52,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:52,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:52,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:28:52,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:28:52,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:28:52,859 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:28:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:28:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:28:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:28:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:28:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:28:52,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:28:52,943 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:28:52,946 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:28:53,180 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:28:53,186 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:28:53,186 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:28:53,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:53 BoogieIcfgContainer [2022-11-16 12:28:53,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:28:53,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:28:53,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:28:53,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:28:53,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:28:52" (1/3) ... [2022-11-16 12:28:53,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e29cc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:53, skipping insertion in model container [2022-11-16 12:28:53,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:52" (2/3) ... [2022-11-16 12:28:53,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e29cc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:53, skipping insertion in model container [2022-11-16 12:28:53,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:53" (3/3) ... [2022-11-16 12:28:53,212 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2022-11-16 12:28:53,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:28:53,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:28:53,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:28:53,316 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;@397bf9a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:28:53,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:28:53,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:28:53,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:28:53,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:53,331 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:53,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:53,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash 516392259, now seen corresponding path program 1 times [2022-11-16 12:28:53,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:53,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544192165] [2022-11-16 12:28:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:28:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:28:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:28:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:28:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:28:53,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:53,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544192165] [2022-11-16 12:28:53,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544192165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:53,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:53,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:28:53,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516168312] [2022-11-16 12:28:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:53,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:28:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:53,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:28:53,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:28:53,684 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:53,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:53,718 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2022-11-16 12:28:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:28:53,720 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-11-16 12:28:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:53,729 INFO L225 Difference]: With dead ends: 61 [2022-11-16 12:28:53,729 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 12:28:53,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 12:28:53,743 INFO L413 NwaCegarLoop]: 42 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, 42 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 12:28:53,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:28:53,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 12:28:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-16 12:28:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:28:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2022-11-16 12:28:53,783 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2022-11-16 12:28:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:53,785 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2022-11-16 12:28:53,785 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2022-11-16 12:28:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:28:53,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:53,787 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:53,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:28:53,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:53,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:53,789 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2022-11-16 12:28:53,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:53,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111307741] [2022-11-16 12:28:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:53,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:53,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:28:53,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929177659] [2022-11-16 12:28:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:53,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:53,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:53,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:53,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:28:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:53,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:28:53,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:28:54,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:28:54,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:54,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111307741] [2022-11-16 12:28:54,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:28:54,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929177659] [2022-11-16 12:28:54,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929177659] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:54,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:54,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-16 12:28:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325788557] [2022-11-16 12:28:54,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:54,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:54,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:54,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:54,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:54,357 INFO L87 Difference]: Start difference. First operand 28 states and 38 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:54,426 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-16 12:28:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:28:54,429 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-11-16 12:28:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:54,433 INFO L225 Difference]: With dead ends: 36 [2022-11-16 12:28:54,438 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 12:28:54,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:28:54,441 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:54,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 125 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2022-11-16 12:28:54,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 12:28:54,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-16 12:28:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:28:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-11-16 12:28:54,464 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 29 [2022-11-16 12:28:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:54,465 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-11-16 12:28:54,466 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:28:54,466 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-11-16 12:28:54,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 12:28:54,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:54,468 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:54,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:54,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:54,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:54,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2022-11-16 12:28:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:54,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891623380] [2022-11-16 12:28:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:54,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:54,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:28:54,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378922918] [2022-11-16 12:28:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:54,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:54,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:54,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:54,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:28:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:54,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:28:54,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:28:54,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:28:55,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:55,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891623380] [2022-11-16 12:28:55,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:28:55,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378922918] [2022-11-16 12:28:55,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378922918] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:55,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:55,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-16 12:28:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318377629] [2022-11-16 12:28:55,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:55,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:55,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:55,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:55,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:28:55,020 INFO L87 Difference]: Start difference. First operand 34 states and 44 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:28:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:55,126 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2022-11-16 12:28:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:28:55,144 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-11-16 12:28:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:55,146 INFO L225 Difference]: With dead ends: 50 [2022-11-16 12:28:55,146 INFO L226 Difference]: Without dead ends: 48 [2022-11-16 12:28:55,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:28:55,147 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:55,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 120 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:28:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-16 12:28:55,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2022-11-16 12:28:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:28:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2022-11-16 12:28:55,170 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2022-11-16 12:28:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:55,171 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2022-11-16 12:28:55,171 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:28:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2022-11-16 12:28:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 12:28:55,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:55,175 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:55,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:55,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:55,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:55,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2022-11-16 12:28:55,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:55,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475385313] [2022-11-16 12:28:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:55,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:55,397 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:28:55,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907039061] [2022-11-16 12:28:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:55,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:55,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:55,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:55,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:28:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:55,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:28:55,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:28:55,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:55,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:55,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475385313] [2022-11-16 12:28:55,944 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:28:55,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907039061] [2022-11-16 12:28:55,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907039061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:55,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:55,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-16 12:28:55,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830725795] [2022-11-16 12:28:55,945 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:55,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:28:55,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:28:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:28:55,947 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:28:56,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:56,295 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-11-16 12:28:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:28:56,296 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 39 [2022-11-16 12:28:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:56,300 INFO L225 Difference]: With dead ends: 64 [2022-11-16 12:28:56,300 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 12:28:56,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:28:56,305 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:56,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 79 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:28:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 12:28:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 12:28:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 12:28:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 85 transitions. [2022-11-16 12:28:56,337 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 85 transitions. Word has length 39 [2022-11-16 12:28:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:56,338 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 85 transitions. [2022-11-16 12:28:56,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:28:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 85 transitions. [2022-11-16 12:28:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:28:56,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:56,340 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 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 12:28:56,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:28:56,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:56,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:56,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2022-11-16 12:28:56,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:56,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932353392] [2022-11-16 12:28:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:56,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:56,569 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:28:56,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467199864] [2022-11-16 12:28:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:56,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:56,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:56,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:56,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:28:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:56,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:28:56,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 12:28:56,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:28:56,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:56,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932353392] [2022-11-16 12:28:56,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:28:56,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467199864] [2022-11-16 12:28:56,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467199864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:56,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:56,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:28:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943964117] [2022-11-16 12:28:56,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:56,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:28:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:56,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:28:56,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:28:56,694 INFO L87 Difference]: Start difference. First operand 61 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:28:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:56,772 INFO L93 Difference]: Finished difference Result 67 states and 90 transitions. [2022-11-16 12:28:56,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:28:56,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-11-16 12:28:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:56,773 INFO L225 Difference]: With dead ends: 67 [2022-11-16 12:28:56,773 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 12:28:56,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 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 12:28:56,774 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:56,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:28:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 12:28:56,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-16 12:28:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 12:28:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 88 transitions. [2022-11-16 12:28:56,795 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 88 transitions. Word has length 45 [2022-11-16 12:28:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:56,796 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 88 transitions. [2022-11-16 12:28:56,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:28:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 88 transitions. [2022-11-16 12:28:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:28:56,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:56,802 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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 12:28:56,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:57,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1322486933, now seen corresponding path program 1 times [2022-11-16 12:28:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572269515] [2022-11-16 12:28:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:57,028 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:28:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655604128] [2022-11-16 12:28:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:57,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:57,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:57,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:57,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:28:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:57,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:28:57,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 12:28:57,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:57,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:57,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572269515] [2022-11-16 12:28:57,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:28:57,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655604128] [2022-11-16 12:28:57,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655604128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:57,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:57,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-11-16 12:28:57,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646422844] [2022-11-16 12:28:57,333 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:57,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:28:57,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:57,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:28:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:57,335 INFO L87 Difference]: Start difference. First operand 65 states and 88 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:28:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:57,447 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2022-11-16 12:28:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:28:57,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-11-16 12:28:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:57,451 INFO L225 Difference]: With dead ends: 71 [2022-11-16 12:28:57,451 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 12:28:57,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:28:57,453 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:57,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 152 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:28:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 12:28:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-16 12:28:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 38 states have (on average 1.236842105263158) internal successors, (47), 40 states have internal predecessors, (47), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 12:28:57,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2022-11-16 12:28:57,478 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 47 [2022-11-16 12:28:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:57,478 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2022-11-16 12:28:57,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:28:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2022-11-16 12:28:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:28:57,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:57,479 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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 12:28:57,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:57,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:28:57,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:57,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:57,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2022-11-16 12:28:57,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:57,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779752234] [2022-11-16 12:28:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:57,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:57,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:28:57,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793439846] [2022-11-16 12:28:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:57,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:57,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:57,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:57,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:28:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:57,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:28:57,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 12:28:57,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:58,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:58,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779752234] [2022-11-16 12:28:58,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:28:58,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793439846] [2022-11-16 12:28:58,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793439846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:58,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:28:58,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-11-16 12:28:58,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898399447] [2022-11-16 12:28:58,042 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:58,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:28:58,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:58,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:28:58,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:28:58,044 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:28:58,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:58,162 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2022-11-16 12:28:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:28:58,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-11-16 12:28:58,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:58,164 INFO L225 Difference]: With dead ends: 80 [2022-11-16 12:28:58,164 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 12:28:58,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:28:58,165 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:58,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 149 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:28:58,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 12:28:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2022-11-16 12:28:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 12:28:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2022-11-16 12:28:58,180 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2022-11-16 12:28:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:58,182 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2022-11-16 12:28:58,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:28:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2022-11-16 12:28:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 12:28:58,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:58,189 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 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 12:28:58,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:58,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:58,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:58,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2022-11-16 12:28:58,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:58,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178787166] [2022-11-16 12:28:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:58,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:28:58,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042537040] [2022-11-16 12:28:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:58,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:58,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:58,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:58,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:28:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:58,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:28:58,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 12:28:58,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 12:28:58,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178787166] [2022-11-16 12:28:58,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:28:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042537040] [2022-11-16 12:28:58,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042537040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:58,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:28:58,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-11-16 12:28:58,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731732940] [2022-11-16 12:28:58,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:58,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:28:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:28:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:28:58,725 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-16 12:28:58,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:58,926 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2022-11-16 12:28:58,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:28:58,927 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 50 [2022-11-16 12:28:58,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:58,929 INFO L225 Difference]: With dead ends: 84 [2022-11-16 12:28:58,930 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 12:28:58,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:28:58,931 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:58,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 119 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:28:58,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 12:28:58,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-16 12:28:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-16 12:28:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2022-11-16 12:28:58,957 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2022-11-16 12:28:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:58,957 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2022-11-16 12:28:58,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-16 12:28:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2022-11-16 12:28:58,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 12:28:58,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:58,959 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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 12:28:58,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:59,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:59,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:59,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 2 times [2022-11-16 12:28:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:59,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545206076] [2022-11-16 12:28:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:59,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:28:59,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935719915] [2022-11-16 12:28:59,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:59,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:59,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:59,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:59,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:28:59,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:59,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:59,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:28:59,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:28:59,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:28:59,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:59,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545206076] [2022-11-16 12:28:59,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:28:59,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935719915] [2022-11-16 12:28:59,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935719915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:59,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:28:59,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-16 12:28:59,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131383841] [2022-11-16 12:28:59,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:59,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:28:59,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:59,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:28:59,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:28:59,616 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 12:29:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:00,401 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2022-11-16 12:29:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:29:00,402 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 52 [2022-11-16 12:29:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:00,403 INFO L225 Difference]: With dead ends: 106 [2022-11-16 12:29:00,403 INFO L226 Difference]: Without dead ends: 99 [2022-11-16 12:29:00,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:29:00,404 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:00,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 152 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:29:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-16 12:29:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2022-11-16 12:29:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 12:29:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2022-11-16 12:29:00,447 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 52 [2022-11-16 12:29:00,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:00,448 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2022-11-16 12:29:00,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 12:29:00,450 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2022-11-16 12:29:00,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:29:00,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:00,452 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:00,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 12:29:00,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:29:00,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:00,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:00,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2022-11-16 12:29:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:00,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681677343] [2022-11-16 12:29:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:00,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:00,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:29:00,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697118379] [2022-11-16 12:29:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:00,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:29:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:00,675 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:29:00,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:29:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:00,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 12:29:00,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-16 12:29:01,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-16 12:29:01,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:01,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681677343] [2022-11-16 12:29:01,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:29:01,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697118379] [2022-11-16 12:29:01,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697118379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:01,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:01,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2022-11-16 12:29:01,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155687041] [2022-11-16 12:29:01,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:01,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:29:01,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:29:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:29:01,213 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-16 12:29:01,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:01,871 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2022-11-16 12:29:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:29:01,871 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 65 [2022-11-16 12:29:01,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:01,872 INFO L225 Difference]: With dead ends: 99 [2022-11-16 12:29:01,872 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 12:29:01,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:29:01,874 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 34 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:01,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 209 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:29:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 12:29:01,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 12:29:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:01,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:29:01,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2022-11-16 12:29:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:01,875 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:29:01,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-16 12:29:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:29:01,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 12:29:01,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:29:01,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:02,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:29:02,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 12:29:06,016 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= |ULTIMATE.start_main_~x~0#1| 5) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-16 12:29:06,016 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 12:29:06,017 INFO L902 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2022-11-16 12:29:06,017 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 1 |ULTIMATE.start_main_~x~0#1|)) [2022-11-16 12:29:06,017 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~x~0#1| 5)) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (= |ULTIMATE.start_main_~s~0#1| 1)) (let ((.cse2 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 (= (+ .cse2 |ULTIMATE.start_main_~b~0#1| .cse3) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse2 .cse3) |ULTIMATE.start_main_~a~0#1|))))) [2022-11-16 12:29:06,017 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= |ULTIMATE.start_main_~x~0#1| 5) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-16 12:29:06,018 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-11-16 12:29:06,018 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= |ULTIMATE.start_main_~x~0#1| 5) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-16 12:29:06,018 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= |ULTIMATE.start_main_~x~0#1| 5) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-16 12:29:06,018 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 12:29:06,018 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 12:29:06,018 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 12:29:06,019 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-16 12:29:06,019 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2022-11-16 12:29:06,019 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) [2022-11-16 12:29:06,019 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 5) (<= 0 |ULTIMATE.start_main_~x~0#1|)) [2022-11-16 12:29:06,019 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~x~0#1| 5)) (.cse3 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (or (let ((.cse1 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse1 |ULTIMATE.start_main_~b~0#1| .cse2) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) .cse3 .cse4 (= (+ .cse1 .cse2) |ULTIMATE.start_main_~a~0#1|))) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse4 (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-11-16 12:29:06,020 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-11-16 12:29:06,020 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-16 12:29:06,020 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2022-11-16 12:29:06,020 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= |ULTIMATE.start_main_~x~0#1| 5) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-16 12:29:06,020 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= |ULTIMATE.start_main_~x~0#1| 5) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-16 12:29:06,020 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-16 12:29:06,021 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-16 12:29:06,021 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-11-16 12:29:06,021 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-16 12:29:06,021 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-16 12:29:06,021 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-16 12:29:06,021 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-16 12:29:06,022 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-16 12:29:06,022 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-16 12:29:06,022 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-16 12:29:06,025 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:06,027 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:29:06,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:29:06 BoogieIcfgContainer [2022-11-16 12:29:06,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:29:06,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:29:06,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:29:06,045 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:29:06,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:53" (3/4) ... [2022-11-16 12:29:06,048 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:29:06,054 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-16 12:29:06,055 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 12:29:06,061 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-16 12:29:06,061 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 12:29:06,061 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:29:06,061 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:29:06,107 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:29:06,107 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:29:06,108 INFO L158 Benchmark]: Toolchain (without parser) took 13692.64ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 54.0MB in the beginning and 42.8MB in the end (delta: 11.2MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2022-11-16 12:29:06,108 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:29:06,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.36ms. Allocated memory is still 92.3MB. Free memory was 53.7MB in the beginning and 68.4MB in the end (delta: -14.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:29:06,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.30ms. Allocated memory is still 92.3MB. Free memory was 68.4MB in the beginning and 66.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:29:06,109 INFO L158 Benchmark]: Boogie Preprocessor took 41.67ms. Allocated memory is still 92.3MB. Free memory was 66.9MB in the beginning and 65.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:29:06,110 INFO L158 Benchmark]: RCFGBuilder took 416.36ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 54.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:29:06,111 INFO L158 Benchmark]: TraceAbstraction took 12853.52ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 53.8MB in the beginning and 45.9MB in the end (delta: 7.8MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2022-11-16 12:29:06,111 INFO L158 Benchmark]: Witness Printer took 63.03ms. Allocated memory is still 146.8MB. Free memory was 45.9MB in the beginning and 42.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:29:06,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.36ms. Allocated memory is still 92.3MB. Free memory was 53.7MB in the beginning and 68.4MB in the end (delta: -14.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.30ms. Allocated memory is still 92.3MB. Free memory was 68.4MB in the beginning and 66.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.67ms. Allocated memory is still 92.3MB. Free memory was 66.9MB in the beginning and 65.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 416.36ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 54.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12853.52ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 53.8MB in the beginning and 45.9MB in the end (delta: 7.8MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. * Witness Printer took 63.03ms. Allocated memory is still 146.8MB. Free memory was 45.9MB in the beginning and 42.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.7s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 179 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 151 mSDsluCounter, 1270 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 13 IncrementalHoareTripleChecker+Unchecked, 930 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1238 IncrementalHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 340 mSDtfsCounter, 1238 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 682 GetRequests, 571 SyntacticMatches, 6 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=9, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 62 PreInvPairs, 108 NumberOfFragments, 404 HoareAnnotationTreeSize, 62 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 2870 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 652 ConstructedInterpolants, 2 QuantifiedInterpolants, 1979 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1084 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 651/728 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((x <= 5 && p * s == q * r + 1) && r * y + b + p * x == a + s * y + q * x) && 1 <= x) && r * y + p * x == a - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 12:29:06,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b90fd7-d287-46a2-bcf6-9fe209955e67/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE