./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.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_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/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_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91 --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 0f9cd32f4b321d9995f5b714ac7ab8f417de9e23e3b823c49499e1a07b5844c4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:48:55,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:48:55,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:48:55,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:48:55,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:48:55,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:48:55,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:48:55,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:48:55,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:48:55,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:48:55,463 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:48:55,463 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:48:55,464 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:48:55,465 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:48:55,466 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:48:55,466 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:48:55,467 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:48:55,467 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:48:55,467 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:48:55,468 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:48:55,468 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:48:55,469 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:48:55,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:48:55,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:48:55,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:48:55,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:48:55,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:48:55,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:48:55,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:48:55,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:48:55,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:48:55,474 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:48:55,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:48:55,474 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:48:55,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:48:55,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:48:55,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:48:55,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:55,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:48:55,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:48:55,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:48:55,477 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:48:55,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:48:55,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:48:55,478 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:48:55,478 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:48:55,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:48:55,478 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_b3b71b2a-bc56-4a9d-a163-d34a78a31998/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f9cd32f4b321d9995f5b714ac7ab8f417de9e23e3b823c49499e1a07b5844c4 [2023-11-24 23:48:55,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:48:55,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:48:55,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:48:55,850 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:48:55,850 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:48:55,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c [2023-11-24 23:48:58,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:48:59,124 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:48:59,125 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c [2023-11-24 23:48:59,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/data/28001f3c4/193fec73ebce4f1ab57aeec565e23c72/FLAGf4f444d97 [2023-11-24 23:48:59,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/data/28001f3c4/193fec73ebce4f1ab57aeec565e23c72 [2023-11-24 23:48:59,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:48:59,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:48:59,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:59,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:48:59,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:48:59,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e90da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59, skipping insertion in model container [2023-11-24 23:48:59,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,194 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:59,435 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_b3b71b2a-bc56-4a9d-a163-d34a78a31998/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c[490,503] [2023-11-24 23:48:59,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:59,488 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:48:59,505 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_b3b71b2a-bc56-4a9d-a163-d34a78a31998/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound1.c[490,503] [2023-11-24 23:48:59,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:59,556 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:48:59,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59 WrapperNode [2023-11-24 23:48:59,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:59,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:59,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:48:59,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:48:59,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,594 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2023-11-24 23:48:59,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:59,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:48:59,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:48:59,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:48:59,607 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:48:59,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:48:59,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:48:59,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:48:59,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (1/1) ... [2023-11-24 23:48:59,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:59,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:59,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:48:59,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:48:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:48:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:48:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:48:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:48:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:48:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:48:59,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:48:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:48:59,792 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:48:59,795 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:48:59,983 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:49:00,023 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:49:00,024 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:49:00,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:00 BoogieIcfgContainer [2023-11-24 23:49:00,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:49:00,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:49:00,029 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:49:00,033 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:49:00,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:48:59" (1/3) ... [2023-11-24 23:49:00,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a5fb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:00, skipping insertion in model container [2023-11-24 23:49:00,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:59" (2/3) ... [2023-11-24 23:49:00,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a5fb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:00, skipping insertion in model container [2023-11-24 23:49:00,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:00" (3/3) ... [2023-11-24 23:49:00,037 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound1.c [2023-11-24 23:49:00,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:49:00,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:49:00,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:49:00,113 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;@402c6125, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:49:00,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:49:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:49:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:49:00,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:00,126 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:00,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:00,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1288775727, now seen corresponding path program 1 times [2023-11-24 23:49:00,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769800477] [2023-11-24 23:49:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:00,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:00,247 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:00,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855110445] [2023-11-24 23:49:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:00,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:00,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:00,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:00,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:49:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:00,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:49:00,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:49:00,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:00,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769800477] [2023-11-24 23:49:00,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:00,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855110445] [2023-11-24 23:49:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855110445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:00,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:00,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613345808] [2023-11-24 23:49:00,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:00,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:49:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:00,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:49:00,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:49:00,435 INFO L87 Difference]: Start difference. First operand has 29 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:49:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:00,469 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2023-11-24 23:49:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:49:00,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 19 [2023-11-24 23:49:00,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:00,488 INFO L225 Difference]: With dead ends: 50 [2023-11-24 23:49:00,488 INFO L226 Difference]: Without dead ends: 27 [2023-11-24 23:49:00,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:49:00,509 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:00,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:49:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-24 23:49:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-24 23:49:00,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 23:49:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2023-11-24 23:49:00,560 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 19 [2023-11-24 23:49:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:00,561 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2023-11-24 23:49:00,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:49:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2023-11-24 23:49:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:49:00,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:00,564 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:00,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:00,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:49:00,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:00,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 226858993, now seen corresponding path program 1 times [2023-11-24 23:49:00,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:00,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786536996] [2023-11-24 23:49:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:00,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:00,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:00,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106552496] [2023-11-24 23:49:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:00,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:00,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:00,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:00,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:49:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:00,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:00,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:49:00,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:00,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:00,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786536996] [2023-11-24 23:49:00,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:00,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106552496] [2023-11-24 23:49:00,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106552496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:00,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:00,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:00,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949664762] [2023-11-24 23:49:00,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:00,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:00,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:00,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:00,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:00,960 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:49:00,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:00,988 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2023-11-24 23:49:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:00,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2023-11-24 23:49:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:00,990 INFO L225 Difference]: With dead ends: 37 [2023-11-24 23:49:00,990 INFO L226 Difference]: Without dead ends: 29 [2023-11-24 23:49:00,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:00,993 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:00,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:49:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-24 23:49:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-24 23:49:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 23:49:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2023-11-24 23:49:01,008 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 20 [2023-11-24 23:49:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:01,008 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2023-11-24 23:49:01,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:49:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2023-11-24 23:49:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:49:01,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:01,010 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:01,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:01,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:49:01,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:01,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1563892497, now seen corresponding path program 1 times [2023-11-24 23:49:01,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:01,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255690607] [2023-11-24 23:49:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:01,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:01,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331360685] [2023-11-24 23:49:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:01,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:01,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:01,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:01,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:49:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:01,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:49:01,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 23:49:01,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 23:49:01,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:01,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255690607] [2023-11-24 23:49:01,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:01,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331360685] [2023-11-24 23:49:01,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331360685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1848839277] [2023-11-24 23:49:01,484 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-11-24 23:49:01,484 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:49:01,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:49:01,494 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:49:01,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:49:02,902 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-11-24 23:49:02,904 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:49:04,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1848839277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:04,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:49:04,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 5] total 15 [2023-11-24 23:49:04,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726312411] [2023-11-24 23:49:04,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:04,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:49:04,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:49:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:49:04,342 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 12 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:49:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:04,592 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2023-11-24 23:49:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:49:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2023-11-24 23:49:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:04,594 INFO L225 Difference]: With dead ends: 38 [2023-11-24 23:49:04,594 INFO L226 Difference]: Without dead ends: 30 [2023-11-24 23:49:04,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:49:04,597 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:04,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:49:04,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-24 23:49:04,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-24 23:49:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 23:49:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2023-11-24 23:49:04,616 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 21 [2023-11-24 23:49:04,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:04,617 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2023-11-24 23:49:04,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:49:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-11-24 23:49:04,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:49:04,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:04,620 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:04,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:04,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:04,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:04,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash 281079646, now seen corresponding path program 1 times [2023-11-24 23:49:04,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:04,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123982004] [2023-11-24 23:49:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:04,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:04,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:04,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68338727] [2023-11-24 23:49:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:04,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:04,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:04,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:04,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:49:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:04,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:49:04,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:49:04,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:04,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:49:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123982004] [2023-11-24 23:49:04,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:49:04,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68338727] [2023-11-24 23:49:04,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68338727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:04,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:04,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:49:04,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427199600] [2023-11-24 23:49:04,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:04,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:49:04,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:49:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:49:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:04,976 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:49:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:05,036 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2023-11-24 23:49:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:49:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 23 [2023-11-24 23:49:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:05,039 INFO L225 Difference]: With dead ends: 44 [2023-11-24 23:49:05,039 INFO L226 Difference]: Without dead ends: 25 [2023-11-24 23:49:05,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:49:05,044 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:05,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 45 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:49:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-24 23:49:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-24 23:49:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 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) [2023-11-24 23:49:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-11-24 23:49:05,073 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2023-11-24 23:49:05,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:05,073 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-11-24 23:49:05,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:49:05,074 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-24 23:49:05,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 23:49:05,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:05,076 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, 1] [2023-11-24 23:49:05,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:05,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:05,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:49:05,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash -717512630, now seen corresponding path program 1 times [2023-11-24 23:49:05,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:49:05,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437892092] [2023-11-24 23:49:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:05,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:49:05,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:49:05,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650890982] [2023-11-24 23:49:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:05,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:05,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:05,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:05,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:49:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:49:05,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:49:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:49:05,424 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:49:05,424 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:49:05,425 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:49:05,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:05,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:05,632 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-24 23:49:05,636 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:49:05,656 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-24 23:49:05,658 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post7 could not be translated [2023-11-24 23:49:05,659 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-24 23:49:05,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:49:05 BoogieIcfgContainer [2023-11-24 23:49:05,671 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:49:05,671 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:49:05,671 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:49:05,672 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:49:05,672 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:00" (3/4) ... [2023-11-24 23:49:05,673 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 23:49:05,685 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-24 23:49:05,696 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post7 could not be translated [2023-11-24 23:49:05,697 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-24 23:49:05,746 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:49:05,746 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:49:05,747 INFO L158 Benchmark]: Toolchain (without parser) took 6587.27ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 97.7MB in the beginning and 96.8MB in the end (delta: 883.8kB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2023-11-24 23:49:05,747 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:49:05,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.50ms. Allocated memory is still 140.5MB. Free memory was 97.7MB in the beginning and 104.2MB in the end (delta: -6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-24 23:49:05,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.70ms. Allocated memory is still 140.5MB. Free memory was 104.2MB in the beginning and 102.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:49:05,748 INFO L158 Benchmark]: Boogie Preprocessor took 39.20ms. Allocated memory is still 140.5MB. Free memory was 102.6MB in the beginning and 101.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:49:05,748 INFO L158 Benchmark]: RCFGBuilder took 391.00ms. Allocated memory is still 140.5MB. Free memory was 101.2MB in the beginning and 87.9MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 23:49:05,749 INFO L158 Benchmark]: TraceAbstraction took 5641.65ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 87.5MB in the beginning and 98.9MB in the end (delta: -11.5MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2023-11-24 23:49:05,749 INFO L158 Benchmark]: Witness Printer took 74.97ms. Allocated memory is still 169.9MB. Free memory was 98.9MB in the beginning and 96.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:49:05,751 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.50ms. Allocated memory is still 140.5MB. Free memory was 97.7MB in the beginning and 104.2MB in the end (delta: -6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.70ms. Allocated memory is still 140.5MB. Free memory was 104.2MB in the beginning and 102.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.20ms. Allocated memory is still 140.5MB. Free memory was 102.6MB in the beginning and 101.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.00ms. Allocated memory is still 140.5MB. Free memory was 101.2MB in the beginning and 87.9MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5641.65ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 87.5MB in the beginning and 98.9MB in the end (delta: -11.5MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Witness Printer took 74.97ms. Allocated memory is still 169.9MB. Free memory was 98.9MB in the beginning and 96.8MB 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~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 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: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=1, y=1] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=1, y=1] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [a=1, b=1, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) [L37] RET assume_abort_if_not(xy < 2147483647) VAL [a=1, b=1, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) [L38] RET assume_abort_if_not(yy < 2147483647) VAL [a=1, b=1, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L40] EXPR counter++ VAL [a=1, b=1, c=0, counter=1, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L40] COND TRUE counter++<1 [L41] COND FALSE, EXPR !(!(b != 0)) [L43] EXPR c = a [L44] EXPR k = 0 VAL [a=1, b=1, c=1, counter=1, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L46] EXPR counter++ VAL [a=1, b=1, c=1, counter=2, k=0, p=1, q=0, r=0, s=1, x=1, xy=1, y=1, yy=1] [L46] COND FALSE, EXPR !(counter++<1) [L57] EXPR a = b [L58] EXPR b = c [L60] long long temp; [L61] EXPR temp = p [L62] EXPR p = q [L63] EXPR q = temp - q * k [L64] EXPR temp = r [L65] EXPR r = s [L66] EXPR s = temp - s * k [L40-L67] { if (!(b != 0)) break; c = a; k = 0; while (counter++<1) { __VERIFIER_assert(a == k * b + c); __VERIFIER_assert(a == y*r + x*p); __VERIFIER_assert(b == x * q + y * s); __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0); if (!(c >= b)) break; c = c - b; k = k + 1; } a = b; b = c; long long temp; temp = p; p = q; q = temp - q * k; temp = r; r = s; s = temp - s * k; } VAL [a=1, b=1, c=1, counter=2, k=0, p=0, q=1, r=1, s=0, x=1, xy=1, y=1, yy=1] [L40] EXPR counter++ VAL [a=1, b=1, c=1, counter=3, k=0, p=0, q=1, r=1, s=0, x=1, xy=1, y=1, yy=1] [L40] COND FALSE !(counter++<1) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, counter=3] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=3] [L13] reach_error() VAL [\old(cond)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 281 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 160 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126 IncrementalHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 121 mSDtfsCounter, 126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, InterpolantAutomatonStates: 23, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 SizeOfPredicates, 3 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 56/60 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: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 15, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 7, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 12, TOOLS_POST_CALL_TIME: 0.6s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 27, TOOLS_QUANTIFIERELIM_TIME: 1.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 34, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 15, 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: 15, 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: 8, CALL_SUMMARIZER_CACHE_MISSES: 1, 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: 164, DAG_COMPRESSION_RETAINED_NODES: 40, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-24 23:49:05,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b71b2a-bc56-4a9d-a163-d34a78a31998/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