./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/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_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/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_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/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 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 --- 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 12:17:22,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:17:22,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:17:22,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:17:22,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:17:22,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:17:22,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:17:22,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:17:22,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:17:22,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:17:22,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:17:22,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:17:22,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:17:22,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:17:22,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:17:22,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:17:22,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:17:22,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:17:22,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:17:22,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:17:22,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:17:22,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:17:22,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:17:22,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:17:22,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:17:22,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:17:22,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:17:22,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:17:22,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:17:22,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:17:22,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:17:22,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:17:22,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:17:22,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:17:22,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:17:22,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:17:22,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:17:22,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:17:22,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:17:22,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:17:22,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:17:22,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:17:23,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:17:23,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:17:23,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:17:23,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:17:23,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:17:23,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:17:23,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:17:23,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:17:23,020 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:17:23,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:17:23,022 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:17:23,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:17:23,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:17:23,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:17:23,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:17:23,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:17:23,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:17:23,024 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:17:23,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:17:23,024 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:17:23,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:17:23,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:17:23,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:17:23,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:17:23,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:17:23,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:17:23,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:17:23,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:17:23,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:17:23,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:17:23,027 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:17:23,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:17:23,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:17:23,028 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_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 [2022-11-16 12:17:23,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:17:23,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:17:23,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:17:23,519 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:17:23,520 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:17:23,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2022-11-16 12:17:23,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/data/64605884a/4f67c930e9124f289690802c8c2431e4/FLAG118a1ad8d [2022-11-16 12:17:24,220 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:17:24,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2022-11-16 12:17:24,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/data/64605884a/4f67c930e9124f289690802c8c2431e4/FLAG118a1ad8d [2022-11-16 12:17:24,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/data/64605884a/4f67c930e9124f289690802c8c2431e4 [2022-11-16 12:17:24,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:17:24,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:17:24,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:17:24,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:17:24,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:17:24,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:24,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36862734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24, skipping insertion in model container [2022-11-16 12:17:24,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:24,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:17:24,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:17:24,811 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_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-11-16 12:17:24,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:17:24,869 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:17:24,890 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_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-11-16 12:17:24,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:17:24,939 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:17:24,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24 WrapperNode [2022-11-16 12:17:24,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:17:24,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:17:24,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:17:24,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:17:24,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:24,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:24,997 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-11-16 12:17:24,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:17:24,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:17:24,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:17:24,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:17:25,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:25,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:25,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:25,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:25,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:25,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:25,043 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:25,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:25,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:17:25,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:17:25,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:17:25,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:17:25,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (1/1) ... [2022-11-16 12:17:25,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:17:25,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:25,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:17:25,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:17:25,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:17:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 12:17:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 12:17:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:17:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:17:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:17:25,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:17:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:17:25,234 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:17:25,237 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:17:25,414 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:17:25,422 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:17:25,422 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:17:25,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:25 BoogieIcfgContainer [2022-11-16 12:17:25,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:17:25,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:17:25,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:17:25,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:17:25,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:17:24" (1/3) ... [2022-11-16 12:17:25,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1dc214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:25, skipping insertion in model container [2022-11-16 12:17:25,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:17:24" (2/3) ... [2022-11-16 12:17:25,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1dc214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:17:25, skipping insertion in model container [2022-11-16 12:17:25,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:25" (3/3) ... [2022-11-16 12:17:25,436 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2022-11-16 12:17:25,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:17:25,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:17:25,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:17:25,563 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;@64d5c92d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:17:25,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:17:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:17:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:17:25,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:25,596 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:25,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:25,604 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2022-11-16 12:17:25,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:25,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100303141] [2022-11-16 12:17:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:25,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:17:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:25,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:17:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:17:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:17:25,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:25,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100303141] [2022-11-16 12:17:25,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100303141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:25,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:25,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:17:25,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163494922] [2022-11-16 12:17:25,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:25,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:17:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:17:26,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:17:26,008 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:17:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:26,057 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2022-11-16 12:17:26,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:17:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-16 12:17:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:26,078 INFO L225 Difference]: With dead ends: 63 [2022-11-16 12:17:26,079 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 12:17:26,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:17:26,099 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:26,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:17:26,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 12:17:26,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 12:17:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:17:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-11-16 12:17:26,154 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2022-11-16 12:17:26,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:26,155 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-11-16 12:17:26,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 12:17:26,156 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-11-16 12:17:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:17:26,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:26,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:26,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:17:26,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:26,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2022-11-16 12:17:26,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:26,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365937249] [2022-11-16 12:17:26,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:17:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:17:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:26,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:17:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:17:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:26,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365937249] [2022-11-16 12:17:26,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365937249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:26,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:26,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:17:26,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340620283] [2022-11-16 12:17:26,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:26,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:17:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:17:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:17:26,423 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:17:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:26,561 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-16 12:17:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:17:26,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-11-16 12:17:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:26,569 INFO L225 Difference]: With dead ends: 42 [2022-11-16 12:17:26,570 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 12:17:26,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:17:26,572 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:26,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 128 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:17:26,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 12:17:26,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-16 12:17:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:17:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-16 12:17:26,588 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2022-11-16 12:17:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:26,589 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-16 12:17:26,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:17:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-16 12:17:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:17:26,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:26,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:26,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:17:26,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:26,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:26,593 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2022-11-16 12:17:26,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:26,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294975069] [2022-11-16 12:17:26,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:26,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:17:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:17:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 12:17:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 12:17:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:17:26,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:26,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294975069] [2022-11-16 12:17:26,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294975069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:26,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:26,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:17:26,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055188747] [2022-11-16 12:17:26,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:26,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:17:26,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:17:26,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:17:26,949 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:17:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:27,066 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-11-16 12:17:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:17:27,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-11-16 12:17:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:27,068 INFO L225 Difference]: With dead ends: 46 [2022-11-16 12:17:27,068 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 12:17:27,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:17:27,071 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:27,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 123 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:17:27,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 12:17:27,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-11-16 12:17:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:17:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-11-16 12:17:27,092 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2022-11-16 12:17:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:27,093 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-16 12:17:27,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:17:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-11-16 12:17:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 12:17:27,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:27,101 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:27,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:17:27,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:27,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2022-11-16 12:17:27,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:27,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868775067] [2022-11-16 12:17:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:27,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:27,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:27,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739489862] [2022-11-16 12:17:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:27,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:27,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:27,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:27,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:17:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:27,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:17:27,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:17:27,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:17:28,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:28,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868775067] [2022-11-16 12:17:28,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:28,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739489862] [2022-11-16 12:17:28,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739489862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:17:28,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:28,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 16 [2022-11-16 12:17:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871533518] [2022-11-16 12:17:28,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:28,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:17:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:17:28,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:17:28,185 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-16 12:17:28,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:28,770 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2022-11-16 12:17:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:17:28,778 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 34 [2022-11-16 12:17:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:28,782 INFO L225 Difference]: With dead ends: 72 [2022-11-16 12:17:28,782 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 12:17:28,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:17:28,785 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 50 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:28,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 128 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:17:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 12:17:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-11-16 12:17:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:17:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-11-16 12:17:28,808 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 34 [2022-11-16 12:17:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:28,808 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-11-16 12:17:28,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-16 12:17:28,809 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-11-16 12:17:28,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 12:17:28,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:28,810 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:28,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:17:29,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-16 12:17:29,017 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:29,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2022-11-16 12:17:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:29,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749631675] [2022-11-16 12:17:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:29,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:29,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484629066] [2022-11-16 12:17:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:29,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:29,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:29,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:17:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:29,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:17:29,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:17:29,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:17:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:17:29,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:29,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749631675] [2022-11-16 12:17:29,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:29,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484629066] [2022-11-16 12:17:29,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484629066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:17:29,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:17:29,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-11-16 12:17:29,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918805803] [2022-11-16 12:17:29,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:17:29,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:17:29,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:29,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:17:29,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:17:29,769 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-16 12:17:30,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:30,311 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2022-11-16 12:17:30,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:17:30,313 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 41 [2022-11-16 12:17:30,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:30,314 INFO L225 Difference]: With dead ends: 69 [2022-11-16 12:17:30,314 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 12:17:30,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:17:30,317 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 55 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:30,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 112 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:17:30,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 12:17:30,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-16 12:17:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:17:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-11-16 12:17:30,363 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 41 [2022-11-16 12:17:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:30,365 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-16 12:17:30,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-16 12:17:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-11-16 12:17:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:17:30,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:30,372 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:30,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:30,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:30,578 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash -677073599, now seen corresponding path program 1 times [2022-11-16 12:17:30,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:30,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767411574] [2022-11-16 12:17:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:30,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:30,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:30,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709621534] [2022-11-16 12:17:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:30,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:30,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:30,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:30,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:17:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:30,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:17:30,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-16 12:17:30,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:17:30,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:30,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767411574] [2022-11-16 12:17:30,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:17:30,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709621534] [2022-11-16 12:17:30,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709621534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:30,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:30,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:17:30,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937529423] [2022-11-16 12:17:30,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:30,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:17:30,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:30,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:17:30,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:17:30,794 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:17:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:30,867 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-11-16 12:17:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:17:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2022-11-16 12:17:30,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:30,874 INFO L225 Difference]: With dead ends: 70 [2022-11-16 12:17:30,875 INFO L226 Difference]: Without dead ends: 63 [2022-11-16 12:17:30,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:17:30,879 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:30,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:17:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-16 12:17:30,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-16 12:17:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 12:17:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-11-16 12:17:30,924 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 69 [2022-11-16 12:17:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:30,925 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-11-16 12:17:30,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:17:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-11-16 12:17:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 12:17:30,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:30,932 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:30,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:31,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:31,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2022-11-16 12:17:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:31,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140755693] [2022-11-16 12:17:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:31,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:17:31,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208436452] [2022-11-16 12:17:31,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:31,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:31,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:31,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:31,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:17:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:31,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 12:17:31,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:17:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 42 proven. 8 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-16 12:17:32,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:18:29,502 WARN L233 SmtUtils]: Spent 39.15s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:19:55,289 WARN L233 SmtUtils]: Spent 34.11s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:21:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-16 12:21:02,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:02,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140755693] [2022-11-16 12:21:02,994 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:21:02,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208436452] [2022-11-16 12:21:02,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208436452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:21:02,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:21:02,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2022-11-16 12:21:02,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398167000] [2022-11-16 12:21:02,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:21:02,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:21:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:02,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:21:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:21:02,998 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2022-11-16 12:21:05,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:21:10,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:21:17,671 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 52 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:21:19,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:22:04,562 WARN L233 SmtUtils]: Spent 41.00s on a formula simplification. DAG size of input: 61 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:22:11,605 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 54 DAG size of output: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:22:19,594 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 57 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:22:23,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:22:23,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:22:23,908 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2022-11-16 12:22:23,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:22:23,909 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) Word has length 71 [2022-11-16 12:22:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:22:23,911 INFO L225 Difference]: With dead ends: 123 [2022-11-16 12:22:23,911 INFO L226 Difference]: Without dead ends: 105 [2022-11-16 12:22:23,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 139.0s TimeCoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:22:23,913 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 92 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 122 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:22:23,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 155 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 678 Invalid, 4 Unknown, 0 Unchecked, 16.8s Time] [2022-11-16 12:22:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-16 12:22:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2022-11-16 12:22:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 60 states have internal predecessors, (62), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 12:22:23,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2022-11-16 12:22:23,955 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 71 [2022-11-16 12:22:23,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:22:23,956 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2022-11-16 12:22:23,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2022-11-16 12:22:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2022-11-16 12:22:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 12:22:23,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:22:23,959 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:23,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:22:24,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:22:24,166 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:22:24,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2022-11-16 12:22:24,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:24,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314540805] [2022-11-16 12:22:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:24,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:22:24,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481157400] [2022-11-16 12:22:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:24,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:22:24,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:22:24,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:22:24,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:22:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:24,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:22:24,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:22:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-16 12:22:25,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:22:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-16 12:22:27,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:27,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314540805] [2022-11-16 12:22:27,421 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:22:27,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481157400] [2022-11-16 12:22:27,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481157400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:22:27,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:22:27,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-11-16 12:22:27,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295454046] [2022-11-16 12:22:27,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:22:27,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:22:27,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:22:27,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:22:27,426 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-16 12:22:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:22:31,648 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2022-11-16 12:22:31,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:22:31,649 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 82 [2022-11-16 12:22:31,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:22:31,651 INFO L225 Difference]: With dead ends: 127 [2022-11-16 12:22:31,651 INFO L226 Difference]: Without dead ends: 97 [2022-11-16 12:22:31,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:22:31,653 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 41 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:22:31,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 222 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 12:22:31,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-16 12:22:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2022-11-16 12:22:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:22:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-11-16 12:22:31,702 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 82 [2022-11-16 12:22:31,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:22:31,703 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-11-16 12:22:31,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-16 12:22:31,704 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-11-16 12:22:31,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 12:22:31,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:22:31,706 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:31,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:22:31,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:22:31,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:22:31,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1888027627, now seen corresponding path program 2 times [2022-11-16 12:22:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:31,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203423229] [2022-11-16 12:22:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:31,923 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:22:31,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86059989] [2022-11-16 12:22:31,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:22:31,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:22:31,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:22:31,925 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:22:31,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:22:32,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:22:32,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:22:32,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:22:32,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:22:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-16 12:22:32,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:22:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-16 12:22:32,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:32,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203423229] [2022-11-16 12:22:32,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:22:32,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86059989] [2022-11-16 12:22:32,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86059989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:22:32,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:22:32,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2022-11-16 12:22:32,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30579866] [2022-11-16 12:22:32,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:22:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:22:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:22:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:22:32,245 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 12:22:32,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:22:32,337 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2022-11-16 12:22:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:22:32,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 84 [2022-11-16 12:22:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:22:32,340 INFO L225 Difference]: With dead ends: 108 [2022-11-16 12:22:32,341 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 12:22:32,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:22:32,345 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:22:32,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:22:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 12:22:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-16 12:22:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 12:22:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2022-11-16 12:22:32,398 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 84 [2022-11-16 12:22:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:22:32,400 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2022-11-16 12:22:32,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-16 12:22:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2022-11-16 12:22:32,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:22:32,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:22:32,410 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:32,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:22:32,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:22:32,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:22:32,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:32,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 3 times [2022-11-16 12:22:32,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:32,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869197963] [2022-11-16 12:22:32,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:32,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:32,651 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:22:32,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371988241] [2022-11-16 12:22:32,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:22:32,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:22:32,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:22:32,657 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:22:32,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:22:32,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:22:32,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:22:32,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:22:32,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:22:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-16 12:22:34,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:22:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-16 12:22:36,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:36,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869197963] [2022-11-16 12:22:36,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:22:36,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371988241] [2022-11-16 12:22:36,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371988241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:22:36,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:22:36,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-11-16 12:22:36,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849562471] [2022-11-16 12:22:36,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:22:36,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:22:36,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:22:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:22:36,311 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-16 12:22:38,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:22:38,607 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2022-11-16 12:22:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:22:38,609 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) Word has length 101 [2022-11-16 12:22:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:22:38,610 INFO L225 Difference]: With dead ends: 142 [2022-11-16 12:22:38,610 INFO L226 Difference]: Without dead ends: 90 [2022-11-16 12:22:38,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 181 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:22:38,613 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 85 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:22:38,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 231 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 12:22:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-16 12:22:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-11-16 12:22:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 53 states have internal predecessors, (54), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 12:22:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2022-11-16 12:22:38,655 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 101 [2022-11-16 12:22:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:22:38,656 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2022-11-16 12:22:38,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-16 12:22:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2022-11-16 12:22:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-16 12:22:38,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:22:38,658 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:22:38,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:22:38,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:22:38,865 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:22:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:22:38,866 INFO L85 PathProgramCache]: Analyzing trace with hash 845989083, now seen corresponding path program 1 times [2022-11-16 12:22:38,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:22:38,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548368948] [2022-11-16 12:22:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:38,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:22:38,886 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:22:38,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659438042] [2022-11-16 12:22:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:22:38,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:22:38,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:22:38,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:22:38,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:22:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:22:39,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 12:22:39,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:22:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-16 12:22:40,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 66 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-11-16 12:23:46,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:46,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548368948] [2022-11-16 12:23:46,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:23:46,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659438042] [2022-11-16 12:23:46,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659438042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:46,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:23:46,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2022-11-16 12:23:46,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958551640] [2022-11-16 12:23:46,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:46,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:23:46,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:23:46,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:23:46,918 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 14 states have call predecessors, (34), 16 states have call successors, (34) [2022-11-16 12:23:50,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:50,666 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2022-11-16 12:23:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:23:50,667 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 14 states have call predecessors, (34), 16 states have call successors, (34) Word has length 106 [2022-11-16 12:23:50,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:50,668 INFO L225 Difference]: With dead ends: 105 [2022-11-16 12:23:50,668 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 12:23:50,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=254, Invalid=1228, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 12:23:50,670 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 75 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:50,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 214 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 12:23:50,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 12:23:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-16 12:23:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 54 states have (on average 1.0) internal successors, (54), 54 states have internal predecessors, (54), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:23:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-11-16 12:23:50,710 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 106 [2022-11-16 12:23:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:50,711 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-11-16 12:23:50,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 14 states have call predecessors, (34), 16 states have call successors, (34) [2022-11-16 12:23:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-11-16 12:23:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-16 12:23:50,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:50,714 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:50,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:50,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:50,921 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:50,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:50,922 INFO L85 PathProgramCache]: Analyzing trace with hash -419411602, now seen corresponding path program 1 times [2022-11-16 12:23:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:50,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176463682] [2022-11-16 12:23:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:50,940 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:23:50,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392742271] [2022-11-16 12:23:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:50,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:50,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:50,942 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:50,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:23:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 12:23:51,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 29 proven. 77 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-11-16 12:23:52,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 29 proven. 71 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-16 12:24:21,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:21,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176463682] [2022-11-16 12:24:21,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:24:21,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392742271] [2022-11-16 12:24:21,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392742271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:21,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:21,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 29 [2022-11-16 12:24:21,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665411331] [2022-11-16 12:24:21,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:21,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:24:21,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:24:21,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:24:21,385 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 29 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) [2022-11-16 12:24:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:31,141 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2022-11-16 12:24:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:24:31,142 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) Word has length 112 [2022-11-16 12:24:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:31,143 INFO L225 Difference]: With dead ends: 85 [2022-11-16 12:24:31,143 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 12:24:31,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:24:31,144 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:31,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 206 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-16 12:24:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 12:24:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 12:24:31,146 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 12:24:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:24:31,146 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2022-11-16 12:24:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:31,146 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:24:31,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) [2022-11-16 12:24:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:24:31,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 12:24:31,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 12:24:31,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:31,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:31,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 12:24:45,217 INFO L895 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) (<= 1 .cse0) (<= .cse0 2))) [2022-11-16 12:24:45,217 INFO L899 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2022-11-16 12:24:45,217 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-11-16 12:24:45,217 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 12:24:45,217 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 12:24:45,217 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2022-11-16 12:24:45,218 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 12:24:45,218 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2022-11-16 12:24:45,218 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2)) [2022-11-16 12:24:45,218 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-11-16 12:24:45,218 INFO L895 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-11-16 12:24:45,218 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 12:24:45,219 INFO L902 garLoopResultBuilder]: At program point L62(lines 22 63) the Hoare annotation is: true [2022-11-16 12:24:45,219 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-16 12:24:45,219 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2022-11-16 12:24:45,219 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse13 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse20 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse19 (* |ULTIMATE.start_main_~q~0#1| .cse1)) (.cse10 (* 2 .cse1))) (let ((.cse6 (- |ULTIMATE.start_main_~r~0#1|)) (.cse8 (<= 1 .cse10)) (.cse9 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse14 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse15 (= (+ .cse20 .cse7) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse1) .cse19 |ULTIMATE.start_main_~r~0#1|))) (.cse4 (<= .cse7 2)) (.cse16 (= (* |ULTIMATE.start_main_~p~0#1| .cse1) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse17 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse18 (<= .cse20 |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse2 (<= .cse1 2)) (.cse5 (= (+ .cse19 |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse12 (= .cse13 .cse7))) (or (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and .cse0 .cse4 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse5 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse6 .cse7) 2)) .cse8) (and .cse9 (= .cse10 |ULTIMATE.start_main_~d~0#1|) .cse11 (<= (+ (* (div (+ (- 1) .cse6 (- |ULTIMATE.start_main_~d~0#1|)) 4294967296) 4294967296) 4294967294 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 0) .cse12 (<= .cse10 .cse13) .cse8) (and .cse14 .cse15 .cse9 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse14 .cse15 .cse4 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse0 (< .cse7 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse11 (<= |ULTIMATE.start_main_~d~0#1| .cse7) .cse2 .cse5 .cse12))))) [2022-11-16 12:24:45,219 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~d~0#1| .cse0)) (.cse5 (<= 1 .cse0)) (.cse6 (<= .cse0 2)) (.cse2 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (let ((.cse3 (- |ULTIMATE.start_main_~r~0#1|))) (and (<= 0 (+ (div (+ (- .cse0) (- 2147483647)) 2147483648) 1)) .cse1 (<= .cse2 2) (<= (+ (* 2 |ULTIMATE.start_main_~r~0#1|) 1) .cse2) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse3 .cse2) 2)) (<= (+ 2 |ULTIMATE.start_main_~r~0#1| (* (div (+ (- 1) .cse3 .cse2) 2) 2)) .cse2) (<= 1 (* 2 .cse0)))) (and .cse1 .cse4 .cse5 (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 (= |ULTIMATE.start_main_~r~0#1| .cse2) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse0)) (and .cse1 .cse4 .cse5 (< .cse2 (* 2 |ULTIMATE.start_main_~d~0#1|)) (<= |ULTIMATE.start_main_~d~0#1| .cse2) .cse6 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse2) (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse2))))) [2022-11-16 12:24:45,220 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-11-16 12:24:45,220 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-11-16 12:24:45,220 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-11-16 12:24:45,220 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse13 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse20 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse19 (* |ULTIMATE.start_main_~q~0#1| .cse1)) (.cse10 (* 2 .cse1))) (let ((.cse6 (- |ULTIMATE.start_main_~r~0#1|)) (.cse8 (<= 1 .cse10)) (.cse9 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse14 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse15 (= (+ .cse20 .cse7) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse1) .cse19 |ULTIMATE.start_main_~r~0#1|))) (.cse4 (<= .cse7 2)) (.cse16 (= (* |ULTIMATE.start_main_~p~0#1| .cse1) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse17 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse18 (<= .cse20 |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse2 (<= .cse1 2)) (.cse5 (= (+ .cse19 |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse12 (= .cse13 .cse7))) (or (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and .cse0 .cse4 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse5 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse6 .cse7) 2)) .cse8) (and .cse9 (= .cse10 |ULTIMATE.start_main_~d~0#1|) .cse11 (<= (+ (* (div (+ (- 1) .cse6 (- |ULTIMATE.start_main_~d~0#1|)) 4294967296) 4294967296) 4294967294 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 0) .cse12 (<= .cse10 .cse13) .cse8) (and .cse14 .cse15 .cse9 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse14 .cse15 .cse4 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse0 (< .cse7 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse11 (<= |ULTIMATE.start_main_~d~0#1| .cse7) .cse2 .cse5 .cse12))))) [2022-11-16 12:24:45,221 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse18 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse12 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse20 (* |ULTIMATE.start_main_~q~0#1| .cse1)) (.cse19 (* |ULTIMATE.start_main_~p~0#1| .cse1))) (let ((.cse8 (- |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= 1 |ULTIMATE.start_main_~p~0#1|)) (.cse5 (= (+ |ULTIMATE.start_main_~d~0#1| .cse12) (+ .cse20 .cse19 |ULTIMATE.start_main_~r~0#1|))) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse6 (<= 1 .cse1)) (.cse7 (<= |ULTIMATE.start_main_~d~0#1| .cse12)) (.cse9 (= (+ .cse20 |ULTIMATE.start_main_~r~0#1|) .cse12)) (.cse10 (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse12)) (.cse13 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse14 (= (+ .cse18 .cse12) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse1) .cse20 |ULTIMATE.start_main_~r~0#1|))) (.cse11 (<= .cse12 2)) (.cse15 (= .cse19 |ULTIMATE.start_main_~d~0#1|)) (.cse2 (<= .cse1 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse12)) (.cse16 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse17 (<= .cse18 |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and .cse4 .cse5 .cse6 .cse7 (<= (+ (* (div (+ (- 1) .cse8 (- |ULTIMATE.start_main_~d~0#1|)) 4294967296) 4294967296) 4294967294 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 0) .cse2 .cse9 .cse10 (<= (+ 2 (* 2 (div (+ (- 1) |ULTIMATE.start_main_~d~0#1|) 2))) |ULTIMATE.start_main_~d~0#1|)) (and .cse0 .cse11 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse9 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse8 .cse12) 2)) (<= 1 (* 2 .cse1))) (and .cse4 .cse5 .cse0 .cse6 (< .cse12 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse7 .cse2 .cse9 .cse10) (and .cse13 .cse14 (= 2 |ULTIMATE.start_main_~p~0#1|) .cse15 .cse2 .cse3 .cse16 .cse17) (and .cse13 .cse14 .cse11 .cse15 .cse2 .cse3 .cse16 .cse17))))) [2022-11-16 12:24:45,221 INFO L899 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2022-11-16 12:24:45,221 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-11-16 12:24:45,221 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-11-16 12:24:45,221 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-11-16 12:24:45,222 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-11-16 12:24:45,222 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-16 12:24:45,222 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-16 12:24:45,222 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-16 12:24:45,222 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-16 12:24:45,223 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-16 12:24:45,223 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-16 12:24:45,227 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:45,229 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:24:45,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:24:45 BoogieIcfgContainer [2022-11-16 12:24:45,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:24:45,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:24:45,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:24:45,253 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:24:45,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:17:25" (3/4) ... [2022-11-16 12:24:45,257 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:24:45,265 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-16 12:24:45,265 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 12:24:45,270 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-16 12:24:45,270 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 12:24:45,270 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:24:45,270 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:24:45,327 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:24:45,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:24:45,328 INFO L158 Benchmark]: Toolchain (without parser) took 440772.21ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 106.9MB in the beginning and 76.4MB in the end (delta: 30.5MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2022-11-16 12:24:45,328 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 142.6MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:24:45,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.92ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 119.1MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:24:45,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.03ms. Allocated memory is still 142.6MB. Free memory was 118.4MB in the beginning and 117.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:24:45,330 INFO L158 Benchmark]: Boogie Preprocessor took 47.68ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 116.3MB in the end (delta: 774.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:24:45,331 INFO L158 Benchmark]: RCFGBuilder took 377.11ms. Allocated memory is still 142.6MB. Free memory was 115.6MB in the beginning and 104.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:24:45,332 INFO L158 Benchmark]: TraceAbstraction took 439824.66ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 104.4MB in the beginning and 79.5MB in the end (delta: 24.8MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2022-11-16 12:24:45,332 INFO L158 Benchmark]: Witness Printer took 74.80ms. Allocated memory is still 172.0MB. Free memory was 79.5MB in the beginning and 76.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:24:45,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 142.6MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.92ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 119.1MB in the end (delta: -12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.03ms. Allocated memory is still 142.6MB. Free memory was 118.4MB in the beginning and 117.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.68ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 116.3MB in the end (delta: 774.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 377.11ms. Allocated memory is still 142.6MB. Free memory was 115.6MB in the beginning and 104.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 439824.66ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 104.4MB in the beginning and 79.5MB in the end (delta: 24.8MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. * Witness Printer took 74.80ms. Allocated memory is still 172.0MB. Free memory was 79.5MB in the beginning and 76.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 17]: 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, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 439.7s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 102.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 13.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 527 SdHoareTripleChecker+Valid, 34.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 495 mSDsluCounter, 1744 SdHoareTripleChecker+Invalid, 33.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1311 mSDsCounter, 617 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3263 IncrementalHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 617 mSolverCounterUnsat, 433 mSDtfsCounter, 3263 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1402 GetRequests, 1198 SyntacticMatches, 3 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 166.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=7, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 58 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 85 PreInvPairs, 123 NumberOfFragments, 1462 HoareAnnotationTreeSize, 85 FomulaSimplifications, 226 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 8043 FormulaSimplificationTreeSizeReductionInter, 13.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 319.1s InterpolantComputationTime, 777 NumberOfCodeBlocks, 750 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1388 ConstructedInterpolants, 0 QuantifiedInterpolants, 20594 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1541 ConjunctsInSsa, 245 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 3650/4059 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: 22]: Loop Invariant Derived loop invariant: (((((((((p == 1 && d == B % 4294967296) && q == 0) && B % 4294967296 <= 2) && r == A % 4294967296) && r + 1 <= B % 4294967296) || ((((((p == 1 && A % 4294967296 <= 2) && 0 <= r) && 2 == q) && q * (B % 4294967296) + r == A % 4294967296) && d == (-r + A % 4294967296) / 2) && 1 <= 2 * (B % 4294967296))) || ((((((2 == p && 2 * (B % 4294967296) == d) && p == q) && (-1 + -r + -d) / 4294967296 * 4294967296 + 4294967294 + d + r <= 0) && d + r == A % 4294967296) && 2 * (B % 4294967296) <= d + r) && 1 <= 2 * (B % 4294967296))) || (((((((!(d <= r) && d / 2 + A % 4294967296 == p / 2 * (B % 4294967296) + q * (B % 4294967296) + r) && 2 == p) && p * (B % 4294967296) == d) && B % 4294967296 <= 2) && r == A % 4294967296) && d % 2 == 0) && d / 2 <= r)) || (((((((!(d <= r) && d / 2 + A % 4294967296 == p / 2 * (B % 4294967296) + q * (B % 4294967296) + r) && A % 4294967296 <= 2) && p * (B % 4294967296) == d) && B % 4294967296 <= 2) && r == A % 4294967296) && d % 2 == 0) && d / 2 <= r)) || ((((((p == 1 && A % 4294967296 < 2 * d) && p == q) && d <= A % 4294967296) && B % 4294967296 <= 2) && q * (B % 4294967296) + r == A % 4294967296) && d + r == A % 4294967296) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((d / 2 + A % 4294967296 == p / 2 * (B % 4294967296) + q * (B % 4294967296) + r && 1 <= B % 4294967296) && A % 4294967296 <= 2) && 2 <= p) && p * (B % 4294967296) == d) && r == A % 4294967296) && d % 2 == 0) && d / 2 <= r) || ((((((p == 1 && d == B % 4294967296) && 1 <= d % 4294967296) && A % 4294967296 <= 2) && q == 0) && B % 4294967296 <= 2) && r == A % 4294967296) RESULT: Ultimate proved your program to be correct! [2022-11-16 12:24:45,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea5ea54-3b54-4e42-8a2c-aeca8cd6f300/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