./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba87ab61cc50ccb52aece6219e7fc9da23076f2342241139ee756008f0599342 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:03:32,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:03:32,898 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-25 00:03:32,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:03:32,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:03:32,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:03:32,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:03:32,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:03:32,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:03:32,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:03:32,935 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:03:32,936 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:03:32,936 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:03:32,937 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:03:32,938 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:03:32,938 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:03:32,939 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:03:32,939 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:03:32,944 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:03:32,945 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:03:32,945 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:03:32,948 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:03:32,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:03:32,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:03:32,950 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:03:32,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:03:32,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:03:32,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:03:32,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:03:32,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:03:32,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:03:32,958 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:03:32,958 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:03:32,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:03:32,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:03:32,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:03:32,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:03:32,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:03:32,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:03:32,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:32,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:03:32,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:03:32,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:03:32,963 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:03:32,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:03:32,964 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:03:32,964 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:03:32,965 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:03:32,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:03:32,965 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_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba87ab61cc50ccb52aece6219e7fc9da23076f2342241139ee756008f0599342 [2023-11-25 00:03:33,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:03:33,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:03:33,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:03:33,279 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:03:33,279 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:03:33,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/recursified_nla-digbench/recursified_geo1.c [2023-11-25 00:03:36,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:03:36,729 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:03:36,730 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1.c [2023-11-25 00:03:36,737 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/data/6b3d1692d/d7076b2ad8784d84808ba5f795bfba0a/FLAG29547b2e9 [2023-11-25 00:03:36,751 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/data/6b3d1692d/d7076b2ad8784d84808ba5f795bfba0a [2023-11-25 00:03:36,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:03:36,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:03:36,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:36,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:03:36,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:03:36,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:36" (1/1) ... [2023-11-25 00:03:36,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350c2a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:36, skipping insertion in model container [2023-11-25 00:03:36,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:36" (1/1) ... [2023-11-25 00:03:36,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:03:36,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:36,988 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:03:37,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:37,028 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:03:37,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37 WrapperNode [2023-11-25 00:03:37,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:37,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:37,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:03:37,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:03:37,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,076 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-11-25 00:03:37,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:37,078 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:03:37,078 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:03:37,078 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:03:37,088 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:03:37,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:03:37,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:03:37,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:03:37,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (1/1) ... [2023-11-25 00:03:37,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:37,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:37,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:03:37,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:03:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_36_0 [2023-11-25 00:03:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_36_0 [2023-11-25 00:03:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:03:37,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:03:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:03:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:03:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:03:37,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:03:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:03:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:03:37,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:03:37,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:03:37,290 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:03:37,293 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:03:37,630 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:03:37,674 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:03:37,675 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:03:37,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:37 BoogieIcfgContainer [2023-11-25 00:03:37,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:03:37,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:03:37,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:03:37,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:03:37,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:03:36" (1/3) ... [2023-11-25 00:03:37,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731e5c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:37, skipping insertion in model container [2023-11-25 00:03:37,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:37" (2/3) ... [2023-11-25 00:03:37,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731e5c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:37, skipping insertion in model container [2023-11-25 00:03:37,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:37" (3/3) ... [2023-11-25 00:03:37,687 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo1.c [2023-11-25 00:03:37,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:03:37,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-25 00:03:37,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:03:37,775 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;@13ddfea3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:03:37,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-25 00:03:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 58 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-25 00:03:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-25 00:03:37,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:37,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-25 00:03:37,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-25 00:03:37,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 118091621, now seen corresponding path program 1 times [2023-11-25 00:03:37,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:37,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328853237] [2023-11-25 00:03:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:37,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:37,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581029836] [2023-11-25 00:03:37,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:37,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:37,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:37,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:37,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:03:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:38,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-25 00:03:38,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:38,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 26 [2023-11-25 00:03:38,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,600 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-25 00:03:38,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 68 [2023-11-25 00:03:38,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,744 INFO L349 Elim1Store]: treesize reduction 73, result has 1.4 percent of original size [2023-11-25 00:03:38,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 355 treesize of output 26 [2023-11-25 00:03:38,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:38,836 INFO L349 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2023-11-25 00:03:38,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 110 [2023-11-25 00:03:39,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 26 [2023-11-25 00:03:39,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,144 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-25 00:03:39,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2023-11-25 00:03:39,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 26 [2023-11-25 00:03:39,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:39,273 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-25 00:03:39,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 22 [2023-11-25 00:03:39,361 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,364 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,377 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,378 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,383 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,392 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,393 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,394 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,401 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,415 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,416 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,420 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,453 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,454 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,460 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,471 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,474 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,485 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,486 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,490 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,523 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,526 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,537 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,538 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,539 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,545 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,557 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,558 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:03:39,562 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-25 00:03:39,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2023-11-25 00:03:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:03:39,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:39,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:39,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328853237] [2023-11-25 00:03:39,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:39,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581029836] [2023-11-25 00:03:39,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581029836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:39,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:39,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:03:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129566041] [2023-11-25 00:03:39,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:39,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:03:39,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:39,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:03:39,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:03:39,968 INFO L87 Difference]: Start difference. First operand has 64 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 58 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:03:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:40,541 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2023-11-25 00:03:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:03:40,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-25 00:03:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:40,552 INFO L225 Difference]: With dead ends: 124 [2023-11-25 00:03:40,552 INFO L226 Difference]: Without dead ends: 96 [2023-11-25 00:03:40,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:03:40,558 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 70 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:40,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 208 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:03:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-25 00:03:40,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2023-11-25 00:03:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.711111111111111) internal successors, (77), 69 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-25 00:03:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2023-11-25 00:03:40,609 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 5 [2023-11-25 00:03:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:40,609 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2023-11-25 00:03:40,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:03:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2023-11-25 00:03:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:03:40,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:40,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-25 00:03:40,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-25 00:03:40,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:03:40,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-25 00:03:40,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash -634127008, now seen corresponding path program 1 times [2023-11-25 00:03:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:40,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845724201] [2023-11-25 00:03:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:40,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:40,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:40,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832270292] [2023-11-25 00:03:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:40,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:40,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:40,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:40,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:03:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:40,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-25 00:03:40,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:41,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:41,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:41,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:41,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 35 [2023-11-25 00:03:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:03:41,077 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-11-25 00:03:41,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 49 [2023-11-25 00:03:41,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2023-11-25 00:03:41,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-25 00:03:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:03:41,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:41,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:41,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845724201] [2023-11-25 00:03:41,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:41,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832270292] [2023-11-25 00:03:41,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832270292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:41,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:41,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:03:41,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267689804] [2023-11-25 00:03:41,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:41,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:03:41,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:03:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:03:41,237 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:03:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:41,528 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2023-11-25 00:03:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:03:41,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-25 00:03:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:41,532 INFO L225 Difference]: With dead ends: 96 [2023-11-25 00:03:41,532 INFO L226 Difference]: Without dead ends: 95 [2023-11-25 00:03:41,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:03:41,534 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 66 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:41,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 195 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:03:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-25 00:03:41,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 76. [2023-11-25 00:03:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 69 states have internal predecessors, (76), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-25 00:03:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2023-11-25 00:03:41,561 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 6 [2023-11-25 00:03:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:41,562 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2023-11-25 00:03:41,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:03:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2023-11-25 00:03:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:03:41,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:41,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:41,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:41,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:41,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_28_to_36_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-25 00:03:41,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:41,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1816899271, now seen corresponding path program 1 times [2023-11-25 00:03:41,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:41,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586089717] [2023-11-25 00:03:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:41,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:41,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:41,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629713354] [2023-11-25 00:03:41,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:41,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:41,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:41,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:41,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:03:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:03:41,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:03:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:03:41,977 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:03:41,978 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:03:41,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location func_to_recursive_line_28_to_36_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-11-25 00:03:41,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-11-25 00:03:41,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-11-25 00:03:41,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-11-25 00:03:41,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-11-25 00:03:41,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-11-25 00:03:41,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-11-25 00:03:41,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-11-25 00:03:41,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-11-25 00:03:41,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-11-25 00:03:41,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-11-25 00:03:41,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-11-25 00:03:41,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-11-25 00:03:41,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-11-25 00:03:41,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-11-25 00:03:41,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location func_to_recursive_line_28_to_36_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-11-25 00:03:41,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-11-25 00:03:41,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-11-25 00:03:41,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-11-25 00:03:41,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-11-25 00:03:41,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-11-25 00:03:41,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-11-25 00:03:41,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-11-25 00:03:41,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-11-25 00:03:41,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:42,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:42,197 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-25 00:03:42,202 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:03:42,227 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-11-25 00:03:42,228 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-25 00:03:42,228 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-25 00:03:42,228 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-11-25 00:03:42,229 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-25 00:03:42,229 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-25 00:03:42,229 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-11-25 00:03:42,229 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-25 00:03:42,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:03:42 BoogieIcfgContainer [2023-11-25 00:03:42,241 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:03:42,243 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:03:42,243 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:03:42,244 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:03:42,244 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:37" (3/4) ... [2023-11-25 00:03:42,245 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-25 00:03:42,265 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-11-25 00:03:42,265 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-25 00:03:42,265 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-25 00:03:42,267 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-11-25 00:03:42,267 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-25 00:03:42,268 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-25 00:03:42,270 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated [2023-11-25 00:03:42,270 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-11-25 00:03:42,309 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-25 00:03:42,310 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:03:42,310 INFO L158 Benchmark]: Toolchain (without parser) took 5554.90ms. Allocated memory was 180.4MB in the beginning and 249.6MB in the end (delta: 69.2MB). Free memory was 133.8MB in the beginning and 105.7MB in the end (delta: 28.0MB). Peak memory consumption was 99.0MB. Max. memory is 16.1GB. [2023-11-25 00:03:42,311 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:03:42,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.60ms. Allocated memory is still 180.4MB. Free memory was 133.8MB in the beginning and 122.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-25 00:03:42,312 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.42ms. Allocated memory is still 180.4MB. Free memory was 122.5MB in the beginning and 121.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:03:42,312 INFO L158 Benchmark]: Boogie Preprocessor took 32.58ms. Allocated memory is still 180.4MB. Free memory was 121.2MB in the beginning and 119.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:03:42,313 INFO L158 Benchmark]: RCFGBuilder took 565.78ms. Allocated memory is still 180.4MB. Free memory was 119.8MB in the beginning and 99.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-25 00:03:42,313 INFO L158 Benchmark]: TraceAbstraction took 4561.77ms. Allocated memory was 180.4MB in the beginning and 249.6MB in the end (delta: 69.2MB). Free memory was 98.8MB in the beginning and 107.8MB in the end (delta: -9.0MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2023-11-25 00:03:42,313 INFO L158 Benchmark]: Witness Printer took 66.54ms. Allocated memory is still 249.6MB. Free memory was 107.8MB in the beginning and 105.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:03:42,317 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.60ms. Allocated memory is still 180.4MB. Free memory was 133.8MB in the beginning and 122.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.42ms. Allocated memory is still 180.4MB. Free memory was 122.5MB in the beginning and 121.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.58ms. Allocated memory is still 180.4MB. Free memory was 121.2MB in the beginning and 119.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 565.78ms. Allocated memory is still 180.4MB. Free memory was 119.8MB in the beginning and 99.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4561.77ms. Allocated memory was 180.4MB in the beginning and 249.6MB in the end (delta: 69.2MB). Free memory was 98.8MB in the beginning and 107.8MB in the end (delta: -9.0MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. * Witness Printer took 66.54ms. Allocated memory is still 249.6MB. Free memory was 107.8MB in the beginning and 105.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 57]: integer overflow possible integer overflow possible We found a FailurePath: [L78] int z; [L79] int k; [L80] int x; [L81] int y; [L82] int c; [L83] z = __VERIFIER_nondet_int() [L84] k = __VERIFIER_nondet_int() [L85] x = 1 [L86] EXPR \read(z) [L86] y = z [L87] c = 1 VAL [c={10:0}, k={6:0}, x={8:0}, y={7:0}, z={4:0}] [L88] CALL func_to_recursive_line_28_to_36_0(&y, &k, &x, &c, &z) VAL [c={10:0}, k={6:0}, x={8:0}, y={7:0}, z={4:0}] [L57] EXPR \read(*x) [L57] EXPR \read(*z) VAL [c={10:0}, c={10:0}, k={6:0}, k={6:0}, x={8:0}, x={8:0}, y={7:0}, y={7:0}, z={4:0}, z={4:0}] [L57] EXPR (*x) * (*z) [L57] EXPR \read(*x) VAL [c={10:0}, c={10:0}, k={6:0}, k={6:0}, x={8:0}, x={8:0}, y={7:0}, y={7:0}, z={4:0}, z={4:0}] [L57] ((*x) * (*z)) - (*x) VAL [c={10:0}, c={10:0}, k={6:0}, k={6:0}, x={8:0}, x={8:0}, y={7:0}, y={7:0}, z={4:0}, z={4:0}] - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 67]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 67]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 89]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 89]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 89]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 89]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 64 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 403 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 325 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 233 IncrementalHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 78 mSDtfsCounter, 233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=1, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 39 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 3 QuantifiedInterpolants, 299 SizeOfPredicates, 30 NumberOfNonLiveVariables, 309 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-25 00:03:42,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbb3ce6a-8ade-47ca-aad0-470536fda18b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)