./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d9847fe213bf8df5d23c53d2bc8b53fb384c85820b87c09591484702dabefc3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:33:26,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:33:26,540 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:33:26,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:33:26,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:33:26,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:33:26,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:33:26,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:33:26,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:33:26,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:33:26,574 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:33:26,574 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:33:26,575 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:33:26,575 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:33:26,576 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:33:26,576 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:33:26,577 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:33:26,577 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:33:26,578 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:33:26,578 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:33:26,579 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:33:26,580 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:33:26,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:33:26,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:33:26,581 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:33:26,582 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:33:26,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:33:26,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:33:26,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:33:26,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:33:26,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:33:26,584 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:33:26,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:33:26,585 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:33:26,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:33:26,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:33:26,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:33:26,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:33:26,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:33:26,586 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:33:26,586 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:33:26,587 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:33:26,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:33:26,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:33:26,587 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:33:26,588 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:33:26,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:33:26,588 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d9847fe213bf8df5d23c53d2bc8b53fb384c85820b87c09591484702dabefc3 [2023-12-02 15:33:26,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:33:26,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:33:26,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:33:26,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:33:26,823 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:33:26,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c [2023-12-02 15:33:29,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:33:29,667 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:33:29,667 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c [2023-12-02 15:33:29,674 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/data/e12fc7e0e/f2e85140694141e9984aec401bbc99b4/FLAG9028cb466 [2023-12-02 15:33:29,687 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/data/e12fc7e0e/f2e85140694141e9984aec401bbc99b4 [2023-12-02 15:33:29,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:33:29,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:33:29,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:33:29,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:33:29,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:33:29,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a24699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29, skipping insertion in model container [2023-12-02 15:33:29,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:33:29,847 WARN L240 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_e7ebd7a3-5afd-45f2-9a83-2b545174a020/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c[489,502] [2023-12-02 15:33:29,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:33:29,870 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:33:29,879 WARN L240 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_e7ebd7a3-5afd-45f2-9a83-2b545174a020/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c[489,502] [2023-12-02 15:33:29,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:33:29,898 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:33:29,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29 WrapperNode [2023-12-02 15:33:29,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:33:29,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:33:29,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:33:29,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:33:29,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,931 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2023-12-02 15:33:29,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:33:29,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:33:29,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:33:29,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:33:29,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,941 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:33:29,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:33:29,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:33:29,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:33:29,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (1/1) ... [2023-12-02 15:33:29,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:33:29,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:29,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:33:29,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:33:30,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:33:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:33:30,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:33:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:33:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:33:30,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:33:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:33:30,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:33:30,095 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:33:30,097 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:33:30,232 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:33:30,275 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:33:30,275 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:33:30,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:30 BoogieIcfgContainer [2023-12-02 15:33:30,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:33:30,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:33:30,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:33:30,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:33:30,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:33:29" (1/3) ... [2023-12-02 15:33:30,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58892bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:30, skipping insertion in model container [2023-12-02 15:33:30,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:29" (2/3) ... [2023-12-02 15:33:30,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58892bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:30, skipping insertion in model container [2023-12-02 15:33:30,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:30" (3/3) ... [2023-12-02 15:33:30,287 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound10.c [2023-12-02 15:33:30,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:33:30,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:33:30,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:33:30,374 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4a94ed02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:33:30,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:33:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 15:33:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 15:33:30,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:30,384 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:30,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:30,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:30,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2040384688, now seen corresponding path program 1 times [2023-12-02 15:33:30,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:30,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696284722] [2023-12-02 15:33:30,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:30,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:30,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:33:30,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041839550] [2023-12-02 15:33:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:30,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:30,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:30,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:33:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:30,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 15:33:30,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 15:33:30,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:30,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696284722] [2023-12-02 15:33:30,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:33:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041839550] [2023-12-02 15:33:30,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041839550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:30,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:30,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:33:30,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581121388] [2023-12-02 15:33:30,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:30,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:33:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:33:30,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:30,705 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:33:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:30,821 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2023-12-02 15:33:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:33:30,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2023-12-02 15:33:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:30,830 INFO L225 Difference]: With dead ends: 57 [2023-12-02 15:33:30,830 INFO L226 Difference]: Without dead ends: 37 [2023-12-02 15:33:30,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:33:30,836 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:30,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 105 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:33:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-02 15:33:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-12-02 15:33:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 15:33:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2023-12-02 15:33:30,874 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 20 [2023-12-02 15:33:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:30,875 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2023-12-02 15:33:30,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:33:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2023-12-02 15:33:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 15:33:30,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:30,877 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:30,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:33:31,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 15:33:31,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:31,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash -879048764, now seen corresponding path program 1 times [2023-12-02 15:33:31,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:31,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842589314] [2023-12-02 15:33:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:31,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:31,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:33:31,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674811229] [2023-12-02 15:33:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:31,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:31,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:31,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:31,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:33:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:31,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 15:33:31,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:33:31,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:33:31,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842589314] [2023-12-02 15:33:31,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:33:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674811229] [2023-12-02 15:33:31,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674811229] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:31,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [649560267] [2023-12-02 15:33:31,466 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 15:33:31,466 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:33:31,470 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:33:31,474 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:33:31,474 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:33:32,177 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 15:33:32,193 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 15:33:32,194 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:33:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [649560267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:32,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:32,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 21 [2023-12-02 15:33:32,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465692577] [2023-12-02 15:33:32,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:32,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:33:32,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:32,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:33:32,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-12-02 15:33:32,877 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 15:33:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:33,137 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-12-02 15:33:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 15:33:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 25 [2023-12-02 15:33:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:33,139 INFO L225 Difference]: With dead ends: 43 [2023-12-02 15:33:33,139 INFO L226 Difference]: Without dead ends: 39 [2023-12-02 15:33:33,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-12-02 15:33:33,141 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:33,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 37 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:33:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-02 15:33:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-02 15:33:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 15:33:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2023-12-02 15:33:33,159 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 25 [2023-12-02 15:33:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:33,160 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2023-12-02 15:33:33,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 15:33:33,160 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2023-12-02 15:33:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 15:33:33,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:33,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:33,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:33:33,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:33,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:33,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:33,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1140127173, now seen corresponding path program 1 times [2023-12-02 15:33:33,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:33,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410457226] [2023-12-02 15:33:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:33,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:33:33,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445885768] [2023-12-02 15:33:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:33,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:33,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:33,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:33,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:33:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:33,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:33:33,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:33:33,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:33,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410457226] [2023-12-02 15:33:33,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:33:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445885768] [2023-12-02 15:33:33,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445885768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:33,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:33,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:33:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690579652] [2023-12-02 15:33:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:33,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:33:33,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:33:33,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:33:33,467 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 15:33:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:33,515 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2023-12-02 15:33:33,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:33:33,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 36 [2023-12-02 15:33:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:33,517 INFO L225 Difference]: With dead ends: 45 [2023-12-02 15:33:33,517 INFO L226 Difference]: Without dead ends: 43 [2023-12-02 15:33:33,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:33,519 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:33,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 103 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:33:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-02 15:33:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-12-02 15:33:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 15:33:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2023-12-02 15:33:33,535 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 36 [2023-12-02 15:33:33,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:33,535 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2023-12-02 15:33:33,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 15:33:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2023-12-02 15:33:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 15:33:33,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:33,537 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:33,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 15:33:33,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:33,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:33,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1417905632, now seen corresponding path program 1 times [2023-12-02 15:33:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711507600] [2023-12-02 15:33:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:33,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:33:33,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105274985] [2023-12-02 15:33:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:33,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:33,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:33,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:33,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:33:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:33,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 15:33:33,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:33:33,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:33:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 15:33:34,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711507600] [2023-12-02 15:33:34,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:33:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105274985] [2023-12-02 15:33:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105274985] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:34,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:33:34,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-02 15:33:34,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304340284] [2023-12-02 15:33:34,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:34,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:33:34,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:34,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:33:34,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:33:34,160 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:33:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:34,218 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2023-12-02 15:33:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:33:34,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37 [2023-12-02 15:33:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:34,220 INFO L225 Difference]: With dead ends: 49 [2023-12-02 15:33:34,220 INFO L226 Difference]: Without dead ends: 47 [2023-12-02 15:33:34,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:33:34,221 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:34,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 89 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:33:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-02 15:33:34,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-02 15:33:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 15:33:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2023-12-02 15:33:34,239 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 37 [2023-12-02 15:33:34,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:34,240 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2023-12-02 15:33:34,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:33:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2023-12-02 15:33:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 15:33:34,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:34,241 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:34,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 15:33:34,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:34,445 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:34,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1922069073, now seen corresponding path program 1 times [2023-12-02 15:33:34,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:34,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829142546] [2023-12-02 15:33:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:34,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:34,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:33:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176859786] [2023-12-02 15:33:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:34,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:34,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:34,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:34,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:33:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:34,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 15:33:34,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:33:34,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:33:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:33:34,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:34,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829142546] [2023-12-02 15:33:34,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:33:34,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176859786] [2023-12-02 15:33:34,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176859786] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:33:34,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1160425455] [2023-12-02 15:33:34,704 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 15:33:34,705 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:33:34,705 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:33:34,705 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:33:34,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:33:35,331 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 15:33:35,340 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 15:33:35,341 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:33:35,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1160425455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:35,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:33:35,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9, 8] total 24 [2023-12-02 15:33:35,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889408586] [2023-12-02 15:33:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:35,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:33:35,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:35,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:33:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2023-12-02 15:33:35,980 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 15:33:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:36,186 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2023-12-02 15:33:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 15:33:36,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 41 [2023-12-02 15:33:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:36,187 INFO L225 Difference]: With dead ends: 57 [2023-12-02 15:33:36,187 INFO L226 Difference]: Without dead ends: 45 [2023-12-02 15:33:36,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2023-12-02 15:33:36,189 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:36,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 45 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:33:36,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-02 15:33:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-02 15:33:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 15:33:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2023-12-02 15:33:36,204 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 41 [2023-12-02 15:33:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:36,204 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2023-12-02 15:33:36,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 15:33:36,205 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2023-12-02 15:33:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 15:33:36,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:36,206 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:36,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:33:36,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:36,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:36,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:36,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1662237964, now seen corresponding path program 2 times [2023-12-02 15:33:36,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:36,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558546171] [2023-12-02 15:33:36,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:36,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:36,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:33:36,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620777827] [2023-12-02 15:33:36,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:33:36,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:36,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:36,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:33:36,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:33:36,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:33:36,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 15:33:36,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 15:33:36,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:33:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 15:33:37,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:37,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558546171] [2023-12-02 15:33:37,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:33:37,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620777827] [2023-12-02 15:33:37,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620777827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:33:37,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1569780558] [2023-12-02 15:33:37,005 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-12-02 15:33:37,005 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:33:37,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:33:37,006 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:33:37,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:33:38,822 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:33:38,825 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 15:33:38,826 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:33:41,177 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_main_~r~0#1_39| Int) (|v_ULTIMATE.start_main_~p~0#1_39| Int) (|v_ULTIMATE.start_main_~b~0#1_39| Int) (|v_ULTIMATE.start_main_~s~0#1_37| Int) (|v_ULTIMATE.start_main_~q~0#1_37| Int) (|v_ULTIMATE.start_main_~a~0#1_37| Int)) (and (or (and (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~p~0#1_39|) (= |v_ULTIMATE.start_main_~s~0#1_37| (+ |v_ULTIMATE.start_main_~r~0#1_39| |c_ULTIMATE.start_main_~s~0#1|)) (= |v_ULTIMATE.start_main_~q~0#1_37| (+ |v_ULTIMATE.start_main_~p~0#1_39| |c_ULTIMATE.start_main_~q~0#1|)) (= |c_ULTIMATE.start_main_~r~0#1| |v_ULTIMATE.start_main_~r~0#1_39|) (= |c_ULTIMATE.start_main_~a~0#1| |v_ULTIMATE.start_main_~a~0#1_37|) (<= |v_ULTIMATE.start_main_~a~0#1_37| |v_ULTIMATE.start_main_~b~0#1_39|) (= |v_ULTIMATE.start_main_~b~0#1_39| (+ |v_ULTIMATE.start_main_~a~0#1_37| |c_ULTIMATE.start_main_~b~0#1|))) (and (= |v_ULTIMATE.start_main_~s~0#1_37| |c_ULTIMATE.start_main_~s~0#1|) (= |v_ULTIMATE.start_main_~a~0#1_37| (+ |v_ULTIMATE.start_main_~b~0#1_39| |c_ULTIMATE.start_main_~a~0#1|)) (<= (+ |v_ULTIMATE.start_main_~b~0#1_39| 1) |v_ULTIMATE.start_main_~a~0#1_37|) (= |v_ULTIMATE.start_main_~b~0#1_39| |c_ULTIMATE.start_main_~b~0#1|) (= (+ |v_ULTIMATE.start_main_~q~0#1_37| |c_ULTIMATE.start_main_~p~0#1|) |v_ULTIMATE.start_main_~p~0#1_39|) (= |v_ULTIMATE.start_main_~q~0#1_37| |c_ULTIMATE.start_main_~q~0#1|) (= (+ |v_ULTIMATE.start_main_~s~0#1_37| |c_ULTIMATE.start_main_~r~0#1|) |v_ULTIMATE.start_main_~r~0#1_39|))) (not (= |v_ULTIMATE.start_main_~b~0#1_39| |v_ULTIMATE.start_main_~a~0#1_37|)))) (let ((.cse0 (select |c_#memory_int| 1))) (and (<= |c_ULTIMATE.start_main_~y~0#1| 10) (= (select |c_#valid| 0) 0) (= (select |c_#valid| 3) 1) (= |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~b~0#1|) (= 2 (select |c_#length| 1)) (= (select |c_#valid| 1) 1) (= (select |c_#length| 2) 10) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~a~0#1|) (= |c_ULTIMATE.start_main_~p~0#1| 1) (= |c_ULTIMATE.start_main_~s~0#1| 1) (<= 1 |c_ULTIMATE.start_main_~x~0#1|) (= (select |c_#valid| 2) 1) (= (select .cse0 1) 0) (= 0 |c_ULTIMATE.start_main_~q~0#1|) (<= 1 |c_ULTIMATE.start_main_~y~0#1|) (= |c_ULTIMATE.start_main_~r~0#1| 0) (<= |c_ULTIMATE.start_main_~x~0#1| 10) (= (select |c_#length| 3) 12) (= 48 (select .cse0 0))))) is different from true [2023-12-02 15:33:44,476 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1770#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 15:33:44,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:33:44,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:33:44,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2023-12-02 15:33:44,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661139942] [2023-12-02 15:33:44,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:33:44,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:33:44,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:33:44,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:33:44,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=513, Unknown=2, NotChecked=46, Total=650 [2023-12-02 15:33:44,478 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-02 15:33:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:45,993 INFO L93 Difference]: Finished difference Result 69 states and 90 transitions. [2023-12-02 15:33:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:33:45,994 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 42 [2023-12-02 15:33:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:45,995 INFO L225 Difference]: With dead ends: 69 [2023-12-02 15:33:45,996 INFO L226 Difference]: Without dead ends: 67 [2023-12-02 15:33:45,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=118, Invalid=696, Unknown=2, NotChecked=54, Total=870 [2023-12-02 15:33:45,997 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:45,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 180 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:33:45,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-02 15:33:46,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2023-12-02 15:33:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.1) internal successors, (33), 32 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 15:33:46,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2023-12-02 15:33:46,020 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 42 [2023-12-02 15:33:46,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:46,021 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2023-12-02 15:33:46,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-02 15:33:46,021 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2023-12-02 15:33:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 15:33:46,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:46,022 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:46,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:33:46,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:46,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:46,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash -335940000, now seen corresponding path program 3 times [2023-12-02 15:33:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:46,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216965561] [2023-12-02 15:33:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:46,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:33:46,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063043998] [2023-12-02 15:33:46,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:33:46,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:46,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:46,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:46,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:33:46,286 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:33:46,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:33:46,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-02 15:33:46,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-02 15:33:47,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:33:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 15:33:48,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:48,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216965561] [2023-12-02 15:33:48,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:33:48,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063043998] [2023-12-02 15:33:48,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063043998] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:33:48,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [544013419] [2023-12-02 15:33:48,919 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-12-02 15:33:48,919 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:33:48,920 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:33:48,920 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:33:48,920 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:33:50,764 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:33:50,775 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 15:33:50,778 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:34:28,046 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2280#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 15:34:28,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:34:28,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:34:28,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-12-02 15:34:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559645016] [2023-12-02 15:34:28,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:34:28,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 15:34:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:34:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 15:34:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=751, Unknown=8, NotChecked=0, Total=870 [2023-12-02 15:34:28,049 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-02 15:34:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:34:36,037 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2023-12-02 15:34:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 15:34:36,038 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) Word has length 47 [2023-12-02 15:34:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:34:36,040 INFO L225 Difference]: With dead ends: 71 [2023-12-02 15:34:36,040 INFO L226 Difference]: Without dead ends: 65 [2023-12-02 15:34:36,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 44.7s TimeCoverageRelationStatistics Valid=158, Invalid=1023, Unknown=9, NotChecked=0, Total=1190 [2023-12-02 15:34:36,042 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:34:36,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 220 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 15:34:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-02 15:34:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2023-12-02 15:34:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 38 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 15:34:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2023-12-02 15:34:36,063 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 47 [2023-12-02 15:34:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:34:36,063 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2023-12-02 15:34:36,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-02 15:34:36,063 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2023-12-02 15:34:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 15:34:36,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:34:36,064 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 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] [2023-12-02 15:34:36,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:34:36,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 15:34:36,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:34:36,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:34:36,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1514449119, now seen corresponding path program 1 times [2023-12-02 15:34:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:34:36,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463986888] [2023-12-02 15:34:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:36,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:34:36,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:34:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481758522] [2023-12-02 15:34:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:34:36,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:34:36,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:34:36,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:34:36,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:34:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:34:36,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 15:34:36,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:34:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 15:34:36,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:34:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 15:34:37,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:34:37,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463986888] [2023-12-02 15:34:37,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:34:37,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481758522] [2023-12-02 15:34:37,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481758522] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:34:37,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1645462022] [2023-12-02 15:34:37,117 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 15:34:37,117 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:34:37,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:34:37,118 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:34:37,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:34:38,990 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:34:39,004 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 15:34:39,008 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:35:06,674 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2858#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 15:35:06,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:35:06,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:35:06,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-02 15:35:06,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149294055] [2023-12-02 15:35:06,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:35:06,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:35:06,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:35:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=554, Unknown=4, NotChecked=0, Total=650 [2023-12-02 15:35:06,677 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 15:35:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:07,659 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2023-12-02 15:35:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:35:07,660 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 58 [2023-12-02 15:35:07,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:07,661 INFO L225 Difference]: With dead ends: 73 [2023-12-02 15:35:07,661 INFO L226 Difference]: Without dead ends: 61 [2023-12-02 15:35:07,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=101, Invalid=597, Unknown=4, NotChecked=0, Total=702 [2023-12-02 15:35:07,663 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:07,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 134 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:35:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-02 15:35:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-02 15:35:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 15:35:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2023-12-02 15:35:07,687 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 58 [2023-12-02 15:35:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:07,687 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2023-12-02 15:35:07,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 15:35:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2023-12-02 15:35:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 15:35:07,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:07,689 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:07,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:35:07,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 15:35:07,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:35:07,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash 345062644, now seen corresponding path program 4 times [2023-12-02 15:35:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639648483] [2023-12-02 15:35:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:07,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:07,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:07,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464048076] [2023-12-02 15:35:07,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:35:07,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:07,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:07,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:07,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:35:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:07,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-02 15:35:07,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 65 proven. 55 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-02 15:35:16,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:35:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 61 proven. 55 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-02 15:35:22,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:22,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639648483] [2023-12-02 15:35:22,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:22,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464048076] [2023-12-02 15:35:22,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464048076] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:35:22,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1712987788] [2023-12-02 15:35:22,619 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-12-02 15:35:22,619 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:35:22,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:35:22,619 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:35:22,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:35:24,300 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:35:24,317 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 15:35:24,321 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:36:24,084 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3543#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 15:36:24,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:36:24,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:36:24,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2023-12-02 15:36:24,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024849677] [2023-12-02 15:36:24,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:36:24,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 15:36:24,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:36:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 15:36:24,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1157, Unknown=18, NotChecked=0, Total=1332 [2023-12-02 15:36:24,088 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 24 states, 20 states have (on average 1.65) internal successors, (33), 16 states have internal predecessors, (33), 15 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 14 states have call predecessors, (26), 13 states have call successors, (26) [2023-12-02 15:36:43,787 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 [] [2023-12-02 15:36:45,799 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 [] [2023-12-02 15:36:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:36:50,761 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2023-12-02 15:36:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 15:36:50,762 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 1.65) internal successors, (33), 16 states have internal predecessors, (33), 15 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 14 states have call predecessors, (26), 13 states have call successors, (26) Word has length 76 [2023-12-02 15:36:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:36:50,762 INFO L225 Difference]: With dead ends: 78 [2023-12-02 15:36:50,762 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:36:50,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 189 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 84.5s TimeCoverageRelationStatistics Valid=226, Invalid=1472, Unknown=24, NotChecked=0, Total=1722 [2023-12-02 15:36:50,764 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 46 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:36:50,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 248 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 280 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2023-12-02 15:36:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:36:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:36:50,765 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) [2023-12-02 15:36:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:36:50,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2023-12-02 15:36:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:36:50,765 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:36:50,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 1.65) internal successors, (33), 16 states have internal predecessors, (33), 15 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 14 states have call predecessors, (26), 13 states have call successors, (26) [2023-12-02 15:36:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:36:50,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:36:50,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:36:50,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 15:36:50,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:50,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 15:37:08,465 WARN L293 SmtUtils]: Spent 17.09s on a formula simplification. DAG size of input: 94 DAG size of output: 58 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-02 15:37:35,585 WARN L293 SmtUtils]: Spent 13.86s on a formula simplification. DAG size of input: 94 DAG size of output: 58 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-02 15:37:37,772 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse2 0) 48) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse2 1) 0))) [2023-12-02 15:37:37,772 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 15:37:37,772 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0))) [2023-12-02 15:37:37,773 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse16 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (<= 1 |#StackHeapBarrier|)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 10)) (.cse4 (= 2 (select |#length| 1))) (.cse7 (= (select |#valid| 3) 1)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 10)) (.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= (select |#valid| 1) 1)) (.cse11 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| 2) 1)) (.cse13 (= (select .cse16 0) 48)) (.cse14 (= 10 (select |#length| 2))) (.cse15 (= (select .cse16 1) 0))) (or (let ((.cse5 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse6 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 .cse1 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse2 .cse3 .cse4 (= (+ .cse5 .cse6) |ULTIMATE.start_main_~b~0#1|) .cse7 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse5 .cse6)) .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse11 .cse12 .cse13 .cse14 .cse15)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~p~0#1| 1) .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse7 .cse8 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse9 .cse10 .cse11 .cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse13 .cse14 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2023-12-02 15:37:37,773 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse2 0) 48) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse2 1) 0))) [2023-12-02 15:37:37,773 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 15:37:37,773 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2023-12-02 15:37:37,773 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0))) [2023-12-02 15:37:37,773 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0))) [2023-12-02 15:37:37,773 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-12-02 15:37:37,774 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2023-12-02 15:37:37,774 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 10) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= 10 (select |#length| 2)) (= (select .cse0 1) 0))) [2023-12-02 15:37:37,774 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 10) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0))) [2023-12-02 15:37:37,774 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse16 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (<= 1 |#StackHeapBarrier|)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 10)) (.cse4 (= 2 (select |#length| 1))) (.cse7 (= (select |#valid| 3) 1)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 10)) (.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= (select |#valid| 1) 1)) (.cse11 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| 2) 1)) (.cse13 (= (select .cse16 0) 48)) (.cse14 (= 10 (select |#length| 2))) (.cse15 (= (select .cse16 1) 0))) (or (let ((.cse5 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse6 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 .cse1 (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse2 .cse3 .cse4 (= (+ .cse5 .cse6) |ULTIMATE.start_main_~b~0#1|) .cse7 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (+ |ULTIMATE.start_main_~a~0#1| .cse5 .cse6)) .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse11 .cse12 .cse13 .cse14 .cse15)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~p~0#1| 1) .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse7 .cse8 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse9 .cse10 .cse11 .cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse13 .cse14 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2023-12-02 15:37:37,774 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0))) [2023-12-02 15:37:37,775 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-12-02 15:37:37,775 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0))) [2023-12-02 15:37:37,775 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= 10 (select |#length| 2)) (= (select .cse0 1) 0))) [2023-12-02 15:37:37,775 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-12-02 15:37:37,775 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-12-02 15:37:37,776 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-12-02 15:37:37,776 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-12-02 15:37:37,776 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-12-02 15:37:37,776 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-12-02 15:37:37,776 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-12-02 15:37:37,776 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-12-02 15:37:37,779 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2023-12-02 15:37:37,781 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:37:37,791 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 15:37:37,794 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 15:37:37,794 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 15:37:37,794 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 15:37:37,794 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 15:37:37,794 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 15:37:37,795 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 15:37:37,795 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 15:37:37,795 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 15:37:37,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:37:37 BoogieIcfgContainer [2023-12-02 15:37:37,796 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:37:37,796 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:37:37,796 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:37:37,796 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:37:37,797 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:30" (3/4) ... [2023-12-02 15:37:37,798 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 15:37:37,801 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-12-02 15:37:37,801 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-12-02 15:37:37,804 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-12-02 15:37:37,804 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-12-02 15:37:37,804 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 15:37:37,804 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:37:37,867 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:37:37,868 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 15:37:37,868 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:37:37,869 INFO L158 Benchmark]: Toolchain (without parser) took 248178.12ms. Allocated memory was 134.2MB in the beginning and 283.1MB in the end (delta: 148.9MB). Free memory was 98.5MB in the beginning and 222.5MB in the end (delta: -124.0MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2023-12-02 15:37:37,869 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 46.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:37:37,869 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.69ms. Allocated memory is still 134.2MB. Free memory was 98.1MB in the beginning and 87.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:37:37,869 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.52ms. Allocated memory is still 134.2MB. Free memory was 87.3MB in the beginning and 85.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:37:37,870 INFO L158 Benchmark]: Boogie Preprocessor took 17.03ms. Allocated memory is still 134.2MB. Free memory was 85.9MB in the beginning and 84.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:37:37,870 INFO L158 Benchmark]: RCFGBuilder took 327.41ms. Allocated memory is still 134.2MB. Free memory was 84.6MB in the beginning and 71.6MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 15:37:37,870 INFO L158 Benchmark]: TraceAbstraction took 247515.31ms. Allocated memory was 134.2MB in the beginning and 283.1MB in the end (delta: 148.9MB). Free memory was 70.9MB in the beginning and 226.7MB in the end (delta: -155.8MB). Peak memory consumption was 139.0MB. Max. memory is 16.1GB. [2023-12-02 15:37:37,871 INFO L158 Benchmark]: Witness Printer took 72.05ms. Allocated memory is still 283.1MB. Free memory was 226.7MB in the beginning and 222.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:37:37,873 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 46.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.69ms. Allocated memory is still 134.2MB. Free memory was 98.1MB in the beginning and 87.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.52ms. Allocated memory is still 134.2MB. Free memory was 87.3MB in the beginning and 85.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.03ms. Allocated memory is still 134.2MB. Free memory was 85.9MB in the beginning and 84.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 327.41ms. Allocated memory is still 134.2MB. Free memory was 84.6MB in the beginning and 71.6MB in the end (delta: 12.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 247515.31ms. Allocated memory was 134.2MB in the beginning and 283.1MB in the end (delta: 148.9MB). Free memory was 70.9MB in the beginning and 226.7MB in the end (delta: -155.8MB). Peak memory consumption was 139.0MB. Max. memory is 16.1GB. * Witness Printer took 72.05ms. Allocated memory is still 283.1MB. Free memory was 226.7MB in the beginning and 222.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 247.4s, OverallIterations: 9, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 37.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 46.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 137 mSDsluCounter, 1161 SdHoareTripleChecker+Invalid, 9.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 964 mSDsCounter, 190 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1268 IncrementalHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 190 mSolverCounterUnsat, 197 mSDtfsCounter, 1268 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 984 GetRequests, 786 SyntacticMatches, 10 SemanticMatches, 188 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 165.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=7, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 49 PreInvPairs, 81 NumberOfFragments, 1208 HoareAnnotationTreeSize, 49 FomulaSimplifications, 1871 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 14 FomulaSimplificationsInter, 6416 FormulaSimplificationTreeSizeReductionInter, 46.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 382 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 668 ConstructedInterpolants, 0 QuantifiedInterpolants, 5496 SizeOfPredicates, 48 NumberOfNonLiveVariables, 1012 ConjunctsInSsa, 218 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 967/1136 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: OVERALL_TIME: 1.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 47, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 27, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 41, TOOLS_POST_CALL_TIME: 0.5s, TOOLS_POST_RETURN_APPLICATIONS: 26, TOOLS_POST_RETURN_TIME: 0.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 94, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 118, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 49, DOMAIN_JOIN_TIME: 0.3s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 47, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 26, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 536, DAG_COMPRESSION_RETAINED_NODES: 126, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((p * s) == ((q * r) + 1)) && (1 <= y)) && (y <= 10)) && (((s * y) + (q * x)) == b)) && (x <= 10)) && (1 <= x)) && (((r * y) + (p * x)) == a)) RESULT: Ultimate proved your program to be correct! [2023-12-02 15:37:38,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7ebd7a3-5afd-45f2-9a83-2b545174a020/bin/utaipan-verify-nQ1chXbOIh/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