./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ --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 26bf02dce57f3cc9fa9e6af5bd48026588368cec482f21797d4110581d1b8f61 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:04:24,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:04:24,480 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:04:24,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:04:24,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:04:24,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:04:24,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:04:24,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:04:24,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:04:24,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:04:24,551 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:04:24,552 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:04:24,553 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:04:24,555 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:04:24,555 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:04:24,556 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:04:24,556 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:04:24,557 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:04:24,557 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:04:24,558 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:04:24,558 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:04:24,559 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:04:24,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:04:24,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:04:24,561 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:04:24,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:04:24,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:04:24,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:04:24,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:04:24,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:04:24,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:04:24,566 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:04:24,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:04:24,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:04:24,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:04:24,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:04:24,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:04:24,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:04:24,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:24,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:04:24,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:04:24,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:04:24,569 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:04:24,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:04:24,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:04:24,570 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:04:24,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:04:24,571 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_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26bf02dce57f3cc9fa9e6af5bd48026588368cec482f21797d4110581d1b8f61 [2023-11-19 05:04:24,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:04:24,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:04:24,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:04:25,001 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:04:25,001 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:04:25,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound2.c [2023-11-19 05:04:28,147 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:04:28,364 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:04:28,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_unwindbound2.c [2023-11-19 05:04:28,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/data/a24bd90a2/c27deacbaa9b4d93a43b77b5cc061186/FLAGf98c3ceef [2023-11-19 05:04:28,386 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/data/a24bd90a2/c27deacbaa9b4d93a43b77b5cc061186 [2023-11-19 05:04:28,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:04:28,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:04:28,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:28,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:04:28,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:04:28,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cde1642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28, skipping insertion in model container [2023-11-19 05:04:28,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,432 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:04:28,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:28,657 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:04:28,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:28,698 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:04:28,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28 WrapperNode [2023-11-19 05:04:28,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:28,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:28,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:04:28,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:04:28,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,746 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 172 [2023-11-19 05:04:28,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:28,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:04:28,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:04:28,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:04:28,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:04:28,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:04:28,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:04:28,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:04:28,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (1/1) ... [2023-11-19 05:04:28,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:28,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:28,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:04:28,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:04:28,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:04:28,868 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:04:28,868 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:04:28,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:04:28,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:04:28,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:04:28,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:04:28,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:04:28,954 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:04:28,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:04:29,710 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:04:29,773 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:04:29,773 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 05:04:29,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:29 BoogieIcfgContainer [2023-11-19 05:04:29,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:04:29,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:04:29,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:04:29,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:04:29,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:28" (1/3) ... [2023-11-19 05:04:29,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adacb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:29, skipping insertion in model container [2023-11-19 05:04:29,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:28" (2/3) ... [2023-11-19 05:04:29,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4adacb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:29, skipping insertion in model container [2023-11-19 05:04:29,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:29" (3/3) ... [2023-11-19 05:04:29,792 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll_unwindbound2.c [2023-11-19 05:04:29,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:04:29,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2023-11-19 05:04:29,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:04:29,870 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;@7114591d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:04:29,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2023-11-19 05:04:29,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 111 states have (on average 1.9639639639639639) internal successors, (218), 209 states have internal predecessors, (218), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:04:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 05:04:29,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:29,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 05:04:29,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:29,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash 10140, now seen corresponding path program 1 times [2023-11-19 05:04:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054412886] [2023-11-19 05:04:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:30,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:30,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054412886] [2023-11-19 05:04:30,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054412886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:30,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:30,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:04:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924289380] [2023-11-19 05:04:30,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:30,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:30,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:30,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:30,153 INFO L87 Difference]: Start difference. First operand has 218 states, 111 states have (on average 1.9639639639639639) internal successors, (218), 209 states have internal predecessors, (218), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:30,297 INFO L93 Difference]: Finished difference Result 395 states and 426 transitions. [2023-11-19 05:04:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:30,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-19 05:04:30,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:30,311 INFO L225 Difference]: With dead ends: 395 [2023-11-19 05:04:30,311 INFO L226 Difference]: Without dead ends: 201 [2023-11-19 05:04:30,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:30,319 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 197 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:30,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 193 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:30,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-19 05:04:30,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-11-19 05:04:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 110 states have (on average 1.809090909090909) internal successors, (199), 193 states have internal predecessors, (199), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:04:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 209 transitions. [2023-11-19 05:04:30,382 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 209 transitions. Word has length 2 [2023-11-19 05:04:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:30,383 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 209 transitions. [2023-11-19 05:04:30,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 209 transitions. [2023-11-19 05:04:30,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:04:30,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:30,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:04:30,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:04:30,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:30,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:30,386 INFO L85 PathProgramCache]: Analyzing trace with hash 314376, now seen corresponding path program 1 times [2023-11-19 05:04:30,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:30,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460725362] [2023-11-19 05:04:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:30,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:30,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:30,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460725362] [2023-11-19 05:04:30,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460725362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:30,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:30,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:04:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053057806] [2023-11-19 05:04:30,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:30,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:30,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:30,425 INFO L87 Difference]: Start difference. First operand 201 states and 209 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:30,474 INFO L93 Difference]: Finished difference Result 201 states and 209 transitions. [2023-11-19 05:04:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:30,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:04:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:30,478 INFO L225 Difference]: With dead ends: 201 [2023-11-19 05:04:30,478 INFO L226 Difference]: Without dead ends: 197 [2023-11-19 05:04:30,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:30,480 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 191 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:30,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 189 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-19 05:04:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-11-19 05:04:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 1.7727272727272727) internal successors, (195), 189 states have internal predecessors, (195), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:04:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2023-11-19 05:04:30,512 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 3 [2023-11-19 05:04:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:30,513 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2023-11-19 05:04:30,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:30,514 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2023-11-19 05:04:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:04:30,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:30,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:30,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:04:30,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:30,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1723766388, now seen corresponding path program 1 times [2023-11-19 05:04:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936008017] [2023-11-19 05:04:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:30,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:30,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903008403] [2023-11-19 05:04:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:30,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:30,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:30,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:30,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:04:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:30,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:04:30,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:30,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:30,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:30,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936008017] [2023-11-19 05:04:30,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:30,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903008403] [2023-11-19 05:04:30,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903008403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:30,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:30,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:04:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033351312] [2023-11-19 05:04:30,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:30,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:30,652 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:30,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:30,694 INFO L93 Difference]: Finished difference Result 197 states and 205 transitions. [2023-11-19 05:04:30,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:30,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:04:30,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:30,697 INFO L225 Difference]: With dead ends: 197 [2023-11-19 05:04:30,697 INFO L226 Difference]: Without dead ends: 195 [2023-11-19 05:04:30,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:30,699 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 185 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:30,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 189 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-19 05:04:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2023-11-19 05:04:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 110 states have (on average 1.7545454545454546) internal successors, (193), 187 states have internal predecessors, (193), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:04:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 203 transitions. [2023-11-19 05:04:30,730 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 203 transitions. Word has length 7 [2023-11-19 05:04:30,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:30,730 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 203 transitions. [2023-11-19 05:04:30,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:30,731 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 203 transitions. [2023-11-19 05:04:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:04:30,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:30,733 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:30,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:30,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:30,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:30,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:30,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1554835514, now seen corresponding path program 1 times [2023-11-19 05:04:30,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:30,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599077542] [2023-11-19 05:04:30,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:30,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:30,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:30,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467775666] [2023-11-19 05:04:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:30,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:30,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:30,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:30,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:04:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:31,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:04:31,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:31,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:31,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:31,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599077542] [2023-11-19 05:04:31,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:31,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467775666] [2023-11-19 05:04:31,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467775666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:31,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:31,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:31,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98345030] [2023-11-19 05:04:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:31,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:31,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:31,140 INFO L87 Difference]: Start difference. First operand 195 states and 203 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:31,211 INFO L93 Difference]: Finished difference Result 195 states and 203 transitions. [2023-11-19 05:04:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:31,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-19 05:04:31,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:31,217 INFO L225 Difference]: With dead ends: 195 [2023-11-19 05:04:31,218 INFO L226 Difference]: Without dead ends: 193 [2023-11-19 05:04:31,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:31,222 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 176 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:31,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 173 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-19 05:04:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-19 05:04:31,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 110 states have (on average 1.7363636363636363) internal successors, (191), 185 states have internal predecessors, (191), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:04:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 201 transitions. [2023-11-19 05:04:31,251 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 201 transitions. Word has length 20 [2023-11-19 05:04:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:31,253 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 201 transitions. [2023-11-19 05:04:31,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 201 transitions. [2023-11-19 05:04:31,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 05:04:31,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:31,254 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:31,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:31,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:31,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:31,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash -955260616, now seen corresponding path program 1 times [2023-11-19 05:04:31,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:31,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008018997] [2023-11-19 05:04:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:31,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:31,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:31,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203324898] [2023-11-19 05:04:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:31,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:31,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:31,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:31,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:04:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:31,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:04:31,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:04:31,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:31,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:31,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008018997] [2023-11-19 05:04:31,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203324898] [2023-11-19 05:04:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203324898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:31,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:31,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:04:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949878591] [2023-11-19 05:04:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:31,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:04:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:31,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:04:31,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:04:31,689 INFO L87 Difference]: Start difference. First operand 193 states and 201 transitions. Second operand has 5 states, 3 states have (on average 5.666666666666667) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:31,931 INFO L93 Difference]: Finished difference Result 193 states and 201 transitions. [2023-11-19 05:04:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:04:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 5.666666666666667) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-11-19 05:04:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:31,935 INFO L225 Difference]: With dead ends: 193 [2023-11-19 05:04:31,936 INFO L226 Difference]: Without dead ends: 191 [2023-11-19 05:04:31,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:04:31,942 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 173 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:31,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 346 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:04:31,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-19 05:04:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-11-19 05:04:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 110 states have (on average 1.7181818181818183) internal successors, (189), 183 states have internal predecessors, (189), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:04:31,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 199 transitions. [2023-11-19 05:04:31,978 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 199 transitions. Word has length 21 [2023-11-19 05:04:31,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:31,983 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 199 transitions. [2023-11-19 05:04:31,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 5.666666666666667) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:31,985 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 199 transitions. [2023-11-19 05:04:31,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:04:31,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:31,986 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:32,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:32,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:32,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:32,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:32,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1117551514, now seen corresponding path program 1 times [2023-11-19 05:04:32,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:32,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988951779] [2023-11-19 05:04:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:32,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:32,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:32,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408318675] [2023-11-19 05:04:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:32,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:32,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:32,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:32,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:04:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:32,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:04:32,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:32,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:32,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:32,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988951779] [2023-11-19 05:04:32,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:32,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408318675] [2023-11-19 05:04:32,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408318675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:32,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:32,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:32,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920522619] [2023-11-19 05:04:32,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:32,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:32,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:32,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:04:32,382 INFO L87 Difference]: Start difference. First operand 191 states and 199 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:32,458 INFO L93 Difference]: Finished difference Result 268 states and 277 transitions. [2023-11-19 05:04:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:04:32,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-19 05:04:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:32,462 INFO L225 Difference]: With dead ends: 268 [2023-11-19 05:04:32,462 INFO L226 Difference]: Without dead ends: 267 [2023-11-19 05:04:32,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:04:32,464 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 78 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:32,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 549 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-19 05:04:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 216. [2023-11-19 05:04:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 133 states have (on average 1.7293233082706767) internal successors, (230), 207 states have internal predecessors, (230), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:04:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 242 transitions. [2023-11-19 05:04:32,496 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 242 transitions. Word has length 23 [2023-11-19 05:04:32,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:32,497 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 242 transitions. [2023-11-19 05:04:32,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:32,497 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 242 transitions. [2023-11-19 05:04:32,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:04:32,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:32,498 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:32,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:32,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:32,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:32,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash 284358637, now seen corresponding path program 1 times [2023-11-19 05:04:32,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:32,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129632276] [2023-11-19 05:04:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:32,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:32,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:32,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808108160] [2023-11-19 05:04:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:32,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:32,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:32,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:32,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:04:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:32,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:04:32,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:32,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:32,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:32,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129632276] [2023-11-19 05:04:32,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:32,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808108160] [2023-11-19 05:04:32,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808108160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:32,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:32,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:32,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64944026] [2023-11-19 05:04:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:32,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:32,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:32,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:04:32,860 INFO L87 Difference]: Start difference. First operand 216 states and 242 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:32,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:32,928 INFO L93 Difference]: Finished difference Result 245 states and 269 transitions. [2023-11-19 05:04:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:04:32,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-11-19 05:04:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:32,932 INFO L225 Difference]: With dead ends: 245 [2023-11-19 05:04:32,932 INFO L226 Difference]: Without dead ends: 216 [2023-11-19 05:04:32,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:04:32,934 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 3 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:32,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 552 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:32,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-19 05:04:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-11-19 05:04:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 133 states have (on average 1.7142857142857142) internal successors, (228), 207 states have internal predecessors, (228), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:04:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 240 transitions. [2023-11-19 05:04:32,948 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 240 transitions. Word has length 24 [2023-11-19 05:04:32,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:32,949 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 240 transitions. [2023-11-19 05:04:32,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 240 transitions. [2023-11-19 05:04:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 05:04:32,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:32,951 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:32,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:33,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:33,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:33,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:33,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1609254353, now seen corresponding path program 1 times [2023-11-19 05:04:33,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:33,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587911139] [2023-11-19 05:04:33,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:33,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:33,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:33,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979980292] [2023-11-19 05:04:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:33,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:33,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:33,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:33,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:04:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:33,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:04:33,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:33,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:33,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:33,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587911139] [2023-11-19 05:04:33,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:33,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979980292] [2023-11-19 05:04:33,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979980292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:33,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:33,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:33,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524872543] [2023-11-19 05:04:33,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:33,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:33,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:33,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:33,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:33,311 INFO L87 Difference]: Start difference. First operand 216 states and 240 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:33,550 INFO L93 Difference]: Finished difference Result 372 states and 410 transitions. [2023-11-19 05:04:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-11-19 05:04:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:33,555 INFO L225 Difference]: With dead ends: 372 [2023-11-19 05:04:33,555 INFO L226 Difference]: Without dead ends: 366 [2023-11-19 05:04:33,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:33,557 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 152 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:33,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 316 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:04:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-11-19 05:04:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 288. [2023-11-19 05:04:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 202 states have (on average 1.7277227722772277) internal successors, (349), 276 states have internal predecessors, (349), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:04:33,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 367 transitions. [2023-11-19 05:04:33,587 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 367 transitions. Word has length 26 [2023-11-19 05:04:33,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:33,588 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 367 transitions. [2023-11-19 05:04:33,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 367 transitions. [2023-11-19 05:04:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:04:33,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:33,590 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:33,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:33,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:33,806 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:33,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1652722689, now seen corresponding path program 1 times [2023-11-19 05:04:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:33,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491980847] [2023-11-19 05:04:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:33,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:33,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051530435] [2023-11-19 05:04:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:33,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:33,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:33,820 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:33,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:04:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:33,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:04:33,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:35,919 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~R~0#1| Int)) (let ((.cse0 (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|))) (and (<= (+ |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~A~0#1|) .cse0) (<= .cse0 9223372036854775807)))) is different from true [2023-11-19 05:04:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:35,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:35,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:35,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491980847] [2023-11-19 05:04:35,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:35,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051530435] [2023-11-19 05:04:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051530435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:35,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:35,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:04:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752290356] [2023-11-19 05:04:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:35,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:04:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:35,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:04:35,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-19 05:04:35,998 INFO L87 Difference]: Start difference. First operand 288 states and 367 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:38,097 INFO L93 Difference]: Finished difference Result 289 states and 367 transitions. [2023-11-19 05:04:38,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:04:38,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-19 05:04:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:38,102 INFO L225 Difference]: With dead ends: 289 [2023-11-19 05:04:38,102 INFO L226 Difference]: Without dead ends: 288 [2023-11-19 05:04:38,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=8, Invalid=6, Unknown=2, NotChecked=4, Total=20 [2023-11-19 05:04:38,104 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 190 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:38,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 185 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 199 Unchecked, 0.0s Time] [2023-11-19 05:04:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-19 05:04:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-19 05:04:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 202 states have (on average 1.7227722772277227) internal successors, (348), 276 states have internal predecessors, (348), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:04:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 366 transitions. [2023-11-19 05:04:38,133 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 366 transitions. Word has length 27 [2023-11-19 05:04:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:38,133 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 366 transitions. [2023-11-19 05:04:38,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:04:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 366 transitions. [2023-11-19 05:04:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 05:04:38,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:38,136 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:38,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:38,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:38,354 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:38,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:38,354 INFO L85 PathProgramCache]: Analyzing trace with hash -871392765, now seen corresponding path program 1 times [2023-11-19 05:04:38,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:38,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927691685] [2023-11-19 05:04:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:38,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:38,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:38,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669844664] [2023-11-19 05:04:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:38,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:38,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:38,381 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:38,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:04:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:38,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:04:38,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:04:38,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:04:38,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:38,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927691685] [2023-11-19 05:04:38,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:38,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669844664] [2023-11-19 05:04:38,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669844664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:38,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [287138100] [2023-11-19 05:04:39,009 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-11-19 05:04:39,009 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:39,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:39,022 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:39,022 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:40,403 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 102 for LOIs [2023-11-19 05:04:40,552 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:47,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [287138100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:47,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:04:47,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5] total 18 [2023-11-19 05:04:47,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687283558] [2023-11-19 05:04:47,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:47,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:04:47,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:47,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:04:47,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:04:47,160 INFO L87 Difference]: Start difference. First operand 288 states and 366 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:04:50,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 05:04:53,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:53,409 INFO L93 Difference]: Finished difference Result 335 states and 400 transitions. [2023-11-19 05:04:53,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:04:53,409 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-19 05:04:53,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:53,412 INFO L225 Difference]: With dead ends: 335 [2023-11-19 05:04:53,412 INFO L226 Difference]: Without dead ends: 294 [2023-11-19 05:04:53,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:04:53,413 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 36 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:53,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 523 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 496 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2023-11-19 05:04:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-19 05:04:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2023-11-19 05:04:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 203 states have (on average 1.6551724137931034) internal successors, (336), 276 states have internal predecessors, (336), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:04:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 354 transitions. [2023-11-19 05:04:53,439 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 354 transitions. Word has length 29 [2023-11-19 05:04:53,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:53,439 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 354 transitions. [2023-11-19 05:04:53,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:04:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 354 transitions. [2023-11-19 05:04:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 05:04:53,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:53,443 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:53,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:53,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:04:53,665 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:53,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1370781531, now seen corresponding path program 1 times [2023-11-19 05:04:53,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:53,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923576638] [2023-11-19 05:04:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:53,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:53,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:53,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914250316] [2023-11-19 05:04:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:53,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:53,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:53,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:53,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:04:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:53,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:53,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:53,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:53,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:53,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923576638] [2023-11-19 05:04:53,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914250316] [2023-11-19 05:04:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914250316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:53,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:53,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:04:53,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123443172] [2023-11-19 05:04:53,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:53,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:04:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:04:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:04:53,886 INFO L87 Difference]: Start difference. First operand 289 states and 354 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:53,986 INFO L93 Difference]: Finished difference Result 373 states and 461 transitions. [2023-11-19 05:04:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:04:53,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2023-11-19 05:04:53,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:53,990 INFO L225 Difference]: With dead ends: 373 [2023-11-19 05:04:53,990 INFO L226 Difference]: Without dead ends: 372 [2023-11-19 05:04:53,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:04:53,991 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 61 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:53,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 908 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:53,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-19 05:04:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 343. [2023-11-19 05:04:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 254 states have (on average 1.6811023622047243) internal successors, (427), 327 states have internal predecessors, (427), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:04:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 449 transitions. [2023-11-19 05:04:54,039 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 449 transitions. Word has length 49 [2023-11-19 05:04:54,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:54,041 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 449 transitions. [2023-11-19 05:04:54,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 449 transitions. [2023-11-19 05:04:54,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 05:04:54,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:54,044 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:54,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:54,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:54,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:54,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:54,266 INFO L85 PathProgramCache]: Analyzing trace with hash -455445372, now seen corresponding path program 1 times [2023-11-19 05:04:54,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:54,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769068822] [2023-11-19 05:04:54,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:54,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:54,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545272484] [2023-11-19 05:04:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:54,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:54,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:54,279 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:54,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:04:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:54,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:54,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:54,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:54,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769068822] [2023-11-19 05:04:54,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545272484] [2023-11-19 05:04:54,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545272484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:54,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:54,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:04:54,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056425931] [2023-11-19 05:04:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:54,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:04:54,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:04:54,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:04:54,457 INFO L87 Difference]: Start difference. First operand 343 states and 449 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:54,553 INFO L93 Difference]: Finished difference Result 587 states and 757 transitions. [2023-11-19 05:04:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:04:54,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2023-11-19 05:04:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:54,558 INFO L225 Difference]: With dead ends: 587 [2023-11-19 05:04:54,558 INFO L226 Difference]: Without dead ends: 343 [2023-11-19 05:04:54,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:04:54,562 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 8 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:54,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 748 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-19 05:04:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-19 05:04:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 254 states have (on average 1.6732283464566928) internal successors, (425), 327 states have internal predecessors, (425), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:04:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 447 transitions. [2023-11-19 05:04:54,585 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 447 transitions. Word has length 50 [2023-11-19 05:04:54,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:54,585 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 447 transitions. [2023-11-19 05:04:54,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 447 transitions. [2023-11-19 05:04:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 05:04:54,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:54,587 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:54,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:54,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:54,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:54,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:54,803 INFO L85 PathProgramCache]: Analyzing trace with hash -371258046, now seen corresponding path program 1 times [2023-11-19 05:04:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582219853] [2023-11-19 05:04:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:54,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:54,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:54,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789882535] [2023-11-19 05:04:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:54,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:54,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:54,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:54,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:04:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:54,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:04:54,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:54,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:54,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582219853] [2023-11-19 05:04:54,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789882535] [2023-11-19 05:04:54,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789882535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:54,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:54,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:54,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819207042] [2023-11-19 05:04:54,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:54,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:54,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:54,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:54,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:54,919 INFO L87 Difference]: Start difference. First operand 343 states and 447 transitions. Second operand has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:55,004 INFO L93 Difference]: Finished difference Result 398 states and 507 transitions. [2023-11-19 05:04:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:55,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2023-11-19 05:04:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:55,008 INFO L225 Difference]: With dead ends: 398 [2023-11-19 05:04:55,008 INFO L226 Difference]: Without dead ends: 395 [2023-11-19 05:04:55,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:55,009 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 133 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:55,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 243 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-11-19 05:04:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 361. [2023-11-19 05:04:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 272 states have (on average 1.6580882352941178) internal successors, (451), 345 states have internal predecessors, (451), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:04:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 473 transitions. [2023-11-19 05:04:55,034 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 473 transitions. Word has length 53 [2023-11-19 05:04:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:55,035 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 473 transitions. [2023-11-19 05:04:55,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 473 transitions. [2023-11-19 05:04:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 05:04:55,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:55,036 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:55,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:55,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:55,250 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:55,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash -296692220, now seen corresponding path program 1 times [2023-11-19 05:04:55,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:55,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655263701] [2023-11-19 05:04:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:55,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:55,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:55,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417461948] [2023-11-19 05:04:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:55,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:55,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:55,259 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:55,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:04:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:55,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:04:55,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:55,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:55,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655263701] [2023-11-19 05:04:55,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417461948] [2023-11-19 05:04:55,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417461948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:55,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:55,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:55,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622729691] [2023-11-19 05:04:55,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:55,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:55,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:55,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:55,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:55,375 INFO L87 Difference]: Start difference. First operand 361 states and 473 transitions. Second operand has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:55,492 INFO L93 Difference]: Finished difference Result 404 states and 512 transitions. [2023-11-19 05:04:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:55,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2023-11-19 05:04:55,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:55,496 INFO L225 Difference]: With dead ends: 404 [2023-11-19 05:04:55,496 INFO L226 Difference]: Without dead ends: 401 [2023-11-19 05:04:55,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:55,498 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 127 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:55,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 251 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-11-19 05:04:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 367. [2023-11-19 05:04:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 278 states have (on average 1.6402877697841727) internal successors, (456), 351 states have internal predecessors, (456), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:04:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 478 transitions. [2023-11-19 05:04:55,523 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 478 transitions. Word has length 55 [2023-11-19 05:04:55,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:55,524 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 478 transitions. [2023-11-19 05:04:55,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:55,524 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 478 transitions. [2023-11-19 05:04:55,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 05:04:55,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:55,525 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:55,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:55,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:55,750 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:55,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:55,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1653377338, now seen corresponding path program 1 times [2023-11-19 05:04:55,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:55,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382540840] [2023-11-19 05:04:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:55,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:55,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:55,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118809108] [2023-11-19 05:04:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:55,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:55,761 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:55,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:04:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:55,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:04:55,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:55,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:55,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382540840] [2023-11-19 05:04:55,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:55,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118809108] [2023-11-19 05:04:55,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118809108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:55,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:55,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:55,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221794844] [2023-11-19 05:04:55,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:55,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:55,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:55,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:55,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:55,882 INFO L87 Difference]: Start difference. First operand 367 states and 478 transitions. Second operand has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:56,048 INFO L93 Difference]: Finished difference Result 406 states and 519 transitions. [2023-11-19 05:04:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:56,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2023-11-19 05:04:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:56,052 INFO L225 Difference]: With dead ends: 406 [2023-11-19 05:04:56,052 INFO L226 Difference]: Without dead ends: 388 [2023-11-19 05:04:56,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:56,053 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 130 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:56,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 178 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-19 05:04:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 376. [2023-11-19 05:04:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 302 states have (on average 1.5198675496688743) internal successors, (459), 360 states have internal predecessors, (459), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:04:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 481 transitions. [2023-11-19 05:04:56,079 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 481 transitions. Word has length 57 [2023-11-19 05:04:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:56,080 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 481 transitions. [2023-11-19 05:04:56,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 481 transitions. [2023-11-19 05:04:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 05:04:56,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:56,081 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:56,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-19 05:04:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 05:04:56,295 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:56,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash 242282376, now seen corresponding path program 1 times [2023-11-19 05:04:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:56,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728541246] [2023-11-19 05:04:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:56,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:56,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:56,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691965213] [2023-11-19 05:04:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:56,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:56,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:56,306 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:56,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 05:04:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:56,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:04:56,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:56,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:56,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:56,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728541246] [2023-11-19 05:04:56,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:56,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691965213] [2023-11-19 05:04:56,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691965213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:56,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:56,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:56,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341346502] [2023-11-19 05:04:56,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:56,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:56,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:56,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:56,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:56,450 INFO L87 Difference]: Start difference. First operand 376 states and 481 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:56,607 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2023-11-19 05:04:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:56,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-11-19 05:04:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:56,610 INFO L225 Difference]: With dead ends: 414 [2023-11-19 05:04:56,611 INFO L226 Difference]: Without dead ends: 392 [2023-11-19 05:04:56,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:56,612 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 113 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:56,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 189 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-19 05:04:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 376. [2023-11-19 05:04:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 320 states have (on average 1.353125) internal successors, (433), 360 states have internal predecessors, (433), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:04:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 455 transitions. [2023-11-19 05:04:56,642 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 455 transitions. Word has length 59 [2023-11-19 05:04:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:56,643 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 455 transitions. [2023-11-19 05:04:56,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 455 transitions. [2023-11-19 05:04:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:04:56,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:56,644 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:56,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:56,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 05:04:56,857 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:56,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:56,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1901172274, now seen corresponding path program 1 times [2023-11-19 05:04:56,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:56,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605452352] [2023-11-19 05:04:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:56,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:56,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:56,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289449110] [2023-11-19 05:04:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:56,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:56,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:56,867 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:56,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 05:04:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:56,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:04:56,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:57,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:57,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:57,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605452352] [2023-11-19 05:04:57,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:57,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289449110] [2023-11-19 05:04:57,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289449110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:57,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:57,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:57,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813636254] [2023-11-19 05:04:57,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:57,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:57,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:57,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:57,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:57,008 INFO L87 Difference]: Start difference. First operand 376 states and 455 transitions. Second operand has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:57,273 INFO L93 Difference]: Finished difference Result 422 states and 489 transitions. [2023-11-19 05:04:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:57,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2023-11-19 05:04:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:57,277 INFO L225 Difference]: With dead ends: 422 [2023-11-19 05:04:57,277 INFO L226 Difference]: Without dead ends: 418 [2023-11-19 05:04:57,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:57,279 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 97 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:57,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 181 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:04:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-19 05:04:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 406. [2023-11-19 05:04:57,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 350 states have (on average 1.3114285714285714) internal successors, (459), 390 states have internal predecessors, (459), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:04:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 481 transitions. [2023-11-19 05:04:57,309 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 481 transitions. Word has length 65 [2023-11-19 05:04:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:57,310 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 481 transitions. [2023-11-19 05:04:57,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 481 transitions. [2023-11-19 05:04:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 05:04:57,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:57,311 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:57,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-19 05:04:57,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 05:04:57,526 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:04:57,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:57,526 INFO L85 PathProgramCache]: Analyzing trace with hash -89321450, now seen corresponding path program 1 times [2023-11-19 05:04:57,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:57,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216781865] [2023-11-19 05:04:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:57,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:57,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:57,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021786917] [2023-11-19 05:04:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:57,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:57,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:57,544 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:57,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 05:04:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:57,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:04:57,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:04:57,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:57,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216781865] [2023-11-19 05:04:57,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021786917] [2023-11-19 05:04:57,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021786917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:57,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:04:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356061209] [2023-11-19 05:04:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:57,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:57,698 INFO L87 Difference]: Start difference. First operand 406 states and 481 transitions. Second operand has 3 states, 2 states have (on average 30.5) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:04:59,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 05:05:01,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 05:05:04,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 05:05:06,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 05:05:06,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:06,082 INFO L93 Difference]: Finished difference Result 434 states and 497 transitions. [2023-11-19 05:05:06,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:06,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 30.5) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2023-11-19 05:05:06,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:06,085 INFO L225 Difference]: With dead ends: 434 [2023-11-19 05:05:06,086 INFO L226 Difference]: Without dead ends: 430 [2023-11-19 05:05:06,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:06,087 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 97 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:06,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 163 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 4 Unknown, 0 Unchecked, 8.3s Time] [2023-11-19 05:05:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-11-19 05:05:06,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 418. [2023-11-19 05:05:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 362 states have (on average 1.2900552486187846) internal successors, (467), 402 states have internal predecessors, (467), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:05:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 489 transitions. [2023-11-19 05:05:06,118 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 489 transitions. Word has length 68 [2023-11-19 05:05:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:06,119 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 489 transitions. [2023-11-19 05:05:06,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 30.5) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:05:06,119 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 489 transitions. [2023-11-19 05:05:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 05:05:06,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:06,120 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:06,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 05:05:06,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 05:05:06,339 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:05:06,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1526002514, now seen corresponding path program 1 times [2023-11-19 05:05:06,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:06,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073649208] [2023-11-19 05:05:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:06,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:06,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:05:06,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025765016] [2023-11-19 05:05:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:06,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:06,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:06,361 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:06,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 05:05:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:06,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:05:06,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:05:06,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:05:06,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073649208] [2023-11-19 05:05:06,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:05:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025765016] [2023-11-19 05:05:06,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025765016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:06,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:06,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:05:06,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764235890] [2023-11-19 05:05:06,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:06,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:05:06,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:06,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:05:06,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:06,546 INFO L87 Difference]: Start difference. First operand 418 states and 489 transitions. Second operand has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:05:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:06,818 INFO L93 Difference]: Finished difference Result 438 states and 496 transitions. [2023-11-19 05:05:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:05:06,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2023-11-19 05:05:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:06,821 INFO L225 Difference]: With dead ends: 438 [2023-11-19 05:05:06,822 INFO L226 Difference]: Without dead ends: 418 [2023-11-19 05:05:06,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:05:06,823 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 89 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:06,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 193 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:05:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-19 05:05:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 406. [2023-11-19 05:05:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 350 states have (on average 1.2771428571428571) internal successors, (447), 390 states have internal predecessors, (447), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:05:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 469 transitions. [2023-11-19 05:05:06,859 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 469 transitions. Word has length 69 [2023-11-19 05:05:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:06,859 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 469 transitions. [2023-11-19 05:05:06,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 31.0) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:05:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 469 transitions. [2023-11-19 05:05:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 05:05:06,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:06,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:06,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 05:05:07,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:07,074 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:05:07,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1523270590, now seen corresponding path program 1 times [2023-11-19 05:05:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:07,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614100937] [2023-11-19 05:05:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:07,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:05:07,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014473379] [2023-11-19 05:05:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:07,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:07,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:07,086 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:07,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 05:05:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:07,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:05:07,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:05:07,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:05:07,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614100937] [2023-11-19 05:05:07,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:05:07,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014473379] [2023-11-19 05:05:07,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014473379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:07,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:07,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:05:07,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896836462] [2023-11-19 05:05:07,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:07,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:05:07,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:07,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:05:07,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:05:07,221 INFO L87 Difference]: Start difference. First operand 406 states and 469 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:05:07,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:07,505 INFO L93 Difference]: Finished difference Result 582 states and 663 transitions. [2023-11-19 05:05:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:05:07,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2023-11-19 05:05:07,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:07,509 INFO L225 Difference]: With dead ends: 582 [2023-11-19 05:05:07,509 INFO L226 Difference]: Without dead ends: 581 [2023-11-19 05:05:07,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:05:07,510 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 81 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:07,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 316 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:05:07,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-11-19 05:05:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 528. [2023-11-19 05:05:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 469 states have (on average 1.2921108742004264) internal successors, (606), 509 states have internal predecessors, (606), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 05:05:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 634 transitions. [2023-11-19 05:05:07,549 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 634 transitions. Word has length 74 [2023-11-19 05:05:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:07,549 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 634 transitions. [2023-11-19 05:05:07,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:05:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 634 transitions. [2023-11-19 05:05:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 05:05:07,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:07,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:07,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 05:05:07,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:07,778 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:05:07,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:07,779 INFO L85 PathProgramCache]: Analyzing trace with hash 23252144, now seen corresponding path program 1 times [2023-11-19 05:05:07,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:07,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204508260] [2023-11-19 05:05:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:07,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:07,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:05:07,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103771387] [2023-11-19 05:05:07,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:07,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:07,787 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:07,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 05:05:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:07,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:05:07,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:05:08,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:05:08,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204508260] [2023-11-19 05:05:08,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:05:08,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103771387] [2023-11-19 05:05:08,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103771387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:08,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:08,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:05:08,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604303315] [2023-11-19 05:05:08,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:08,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:05:08,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:08,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:05:08,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:05:08,007 INFO L87 Difference]: Start difference. First operand 528 states and 634 transitions. Second operand has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:05:08,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:08,189 INFO L93 Difference]: Finished difference Result 528 states and 634 transitions. [2023-11-19 05:05:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:05:08,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2023-11-19 05:05:08,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:08,195 INFO L225 Difference]: With dead ends: 528 [2023-11-19 05:05:08,195 INFO L226 Difference]: Without dead ends: 527 [2023-11-19 05:05:08,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:05:08,197 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 176 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:08,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 87 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:08,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-19 05:05:08,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2023-11-19 05:05:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 469 states have (on average 1.2878464818763327) internal successors, (604), 508 states have internal predecessors, (604), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 05:05:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 632 transitions. [2023-11-19 05:05:08,237 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 632 transitions. Word has length 75 [2023-11-19 05:05:08,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:08,238 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 632 transitions. [2023-11-19 05:05:08,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:05:08,238 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 632 transitions. [2023-11-19 05:05:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 05:05:08,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:08,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:08,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 05:05:08,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-19 05:05:08,450 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:05:08,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash 23250638, now seen corresponding path program 1 times [2023-11-19 05:05:08,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:08,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729047712] [2023-11-19 05:05:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:08,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:08,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:05:08,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004493955] [2023-11-19 05:05:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:08,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:08,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:08,465 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:08,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 05:05:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:08,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:05:08,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:05:08,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:05:08,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729047712] [2023-11-19 05:05:08,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:05:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004493955] [2023-11-19 05:05:08,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004493955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:05:08,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:05:08,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:05:08,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182755156] [2023-11-19 05:05:08,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:08,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:05:08,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:08,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:05:08,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:05:08,633 INFO L87 Difference]: Start difference. First operand 527 states and 632 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:05:08,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:08,793 INFO L93 Difference]: Finished difference Result 729 states and 862 transitions. [2023-11-19 05:05:08,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:05:08,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 75 [2023-11-19 05:05:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:08,796 INFO L225 Difference]: With dead ends: 729 [2023-11-19 05:05:08,796 INFO L226 Difference]: Without dead ends: 302 [2023-11-19 05:05:08,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:05:08,798 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 118 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:08,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 478 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:08,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-19 05:05:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 250. [2023-11-19 05:05:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 215 states have (on average 1.1813953488372093) internal successors, (254), 238 states have internal predecessors, (254), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:05:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 268 transitions. [2023-11-19 05:05:08,821 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 268 transitions. Word has length 75 [2023-11-19 05:05:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:08,822 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 268 transitions. [2023-11-19 05:05:08,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:05:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 268 transitions. [2023-11-19 05:05:08,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 05:05:08,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:08,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:08,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-19 05:05:09,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 05:05:09,038 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:05:09,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:09,038 INFO L85 PathProgramCache]: Analyzing trace with hash 720769971, now seen corresponding path program 1 times [2023-11-19 05:05:09,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:09,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757526206] [2023-11-19 05:05:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:09,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:09,048 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:05:09,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283328903] [2023-11-19 05:05:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:09,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:09,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:09,050 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:09,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 05:05:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:09,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:05:09,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:05:09,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:05:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:05:09,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757526206] [2023-11-19 05:05:09,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:05:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283328903] [2023-11-19 05:05:09,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283328903] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:05:09,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:05:09,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-11-19 05:05:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389167471] [2023-11-19 05:05:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:05:09,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:05:09,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:05:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:05:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:05:09,448 INFO L87 Difference]: Start difference. First operand 250 states and 268 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:05:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:05:09,600 INFO L93 Difference]: Finished difference Result 284 states and 303 transitions. [2023-11-19 05:05:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:05:09,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 76 [2023-11-19 05:05:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:05:09,602 INFO L225 Difference]: With dead ends: 284 [2023-11-19 05:05:09,602 INFO L226 Difference]: Without dead ends: 283 [2023-11-19 05:05:09,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:05:09,604 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 24 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:05:09,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 686 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:05:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-19 05:05:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 275. [2023-11-19 05:05:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 238 states have (on average 1.1680672268907564) internal successors, (278), 261 states have internal predecessors, (278), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:05:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 294 transitions. [2023-11-19 05:05:09,629 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 294 transitions. Word has length 76 [2023-11-19 05:05:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:05:09,629 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 294 transitions. [2023-11-19 05:05:09,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:05:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 294 transitions. [2023-11-19 05:05:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 05:05:09,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:05:09,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:05:09,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 05:05:09,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-19 05:05:09,852 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 95 more)] === [2023-11-19 05:05:09,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:05:09,852 INFO L85 PathProgramCache]: Analyzing trace with hash -552681237, now seen corresponding path program 1 times [2023-11-19 05:05:09,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:05:09,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581100107] [2023-11-19 05:05:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:09,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:05:09,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:05:09,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187086989] [2023-11-19 05:05:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:05:09,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:05:09,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:05:09,863 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:05:09,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e4139b2-7d57-4732-9ade-8ff0c0b95e9e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 05:05:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:05:09,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:05:09,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:05:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:05:10,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:05:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:05:10,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:05:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581100107] [2023-11-19 05:05:10,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:05:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187086989] [2023-11-19 05:05:10,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187086989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:05:10,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [164881117] [2023-11-19 05:05:10,245 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2023-11-19 05:05:10,245 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:05:10,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:05:10,246 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:05:10,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:05:14,731 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 116 for LOIs [2023-11-19 05:05:14,795 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 102 for LOIs [2023-11-19 05:05:14,881 INFO L180 IcfgInterpreter]: Interpretation finished