./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/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_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/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_f37ab4bc-7b3e-4feb-93f7-d33415659b05/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 112107fc5c716e652a88d8f7f89344593e9707a3eff2542706a71844f3fcba7a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:12:08,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:12:08,787 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:12:08,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:12:08,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:12:08,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:12:08,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:12:08,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:12:08,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:12:08,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:12:08,868 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:12:08,869 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:12:08,869 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:12:08,871 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:12:08,872 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:12:08,872 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:12:08,873 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:12:08,873 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:12:08,873 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:12:08,874 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:12:08,874 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:12:08,875 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:12:08,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:12:08,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:12:08,877 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:12:08,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:12:08,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:12:08,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:12:08,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:12:08,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:12:08,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:12:08,881 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:12:08,882 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:12:08,882 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:12:08,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:12:08,882 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:12:08,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:12:08,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:12:08,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:08,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:12:08,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:12:08,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:12:08,885 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:12:08,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:12:08,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:12:08,886 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:12:08,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:12:08,886 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_f37ab4bc-7b3e-4feb-93f7-d33415659b05/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112107fc5c716e652a88d8f7f89344593e9707a3eff2542706a71844f3fcba7a [2023-11-19 05:12:09,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:12:09,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:12:09,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:12:09,227 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:12:09,228 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:12:09,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c [2023-11-19 05:12:12,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:12:13,076 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:12:13,077 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c [2023-11-19 05:12:13,086 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/data/cb2143757/6a1e429c61e643ec9ddee55971b645f9/FLAG84e8de937 [2023-11-19 05:12:13,104 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/data/cb2143757/6a1e429c61e643ec9ddee55971b645f9 [2023-11-19 05:12:13,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:12:13,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:12:13,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:12:13,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:12:13,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:12:13,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6982e93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13, skipping insertion in model container [2023-11-19 05:12:13,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,145 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:12:13,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:12:13,349 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:12:13,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:12:13,391 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:12:13,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13 WrapperNode [2023-11-19 05:12:13,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:12:13,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:12:13,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:12:13,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:12:13,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,468 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2023-11-19 05:12:13,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:12:13,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:12:13,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:12:13,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:12:13,482 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:12:13,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:12:13,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:12:13,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:12:13,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (1/1) ... [2023-11-19 05:12:13,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:13,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:13,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:12:13,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:12:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:12:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:12:13,580 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:12:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:12:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:12:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:12:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:12:13,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:12:13,661 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:12:13,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:12:14,025 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:12:14,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:12:14,101 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:12:14,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:12:14 BoogieIcfgContainer [2023-11-19 05:12:14,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:12:14,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:12:14,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:12:14,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:12:14,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:12:13" (1/3) ... [2023-11-19 05:12:14,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55280df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:12:14, skipping insertion in model container [2023-11-19 05:12:14,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:13" (2/3) ... [2023-11-19 05:12:14,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55280df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:12:14, skipping insertion in model container [2023-11-19 05:12:14,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:12:14" (3/3) ... [2023-11-19 05:12:14,126 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound10.c [2023-11-19 05:12:14,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:12:14,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-19 05:12:14,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:12:14,230 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;@1ffc4c75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:12:14,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-19 05:12:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 60 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:12:14,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:14,247 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:14,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:14,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:14,253 INFO L85 PathProgramCache]: Analyzing trace with hash 985407091, now seen corresponding path program 1 times [2023-11-19 05:12:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907125358] [2023-11-19 05:12:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:14,560 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 05:12:14,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:14,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907125358] [2023-11-19 05:12:14,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907125358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:14,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:14,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:14,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319740672] [2023-11-19 05:12:14,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:14,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:14,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:14,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:14,617 INFO L87 Difference]: Start difference. First operand has 67 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 60 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 05:12:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:14,766 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2023-11-19 05:12:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:12:14,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 10 [2023-11-19 05:12:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:14,780 INFO L225 Difference]: With dead ends: 94 [2023-11-19 05:12:14,780 INFO L226 Difference]: Without dead ends: 68 [2023-11-19 05:12:14,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:12:14,793 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:14,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 179 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:12:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-19 05:12:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-19 05:12:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 62 states have internal predecessors, (64), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:12:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2023-11-19 05:12:14,886 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 10 [2023-11-19 05:12:14,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:14,889 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2023-11-19 05:12:14,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 05:12:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2023-11-19 05:12:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:12:14,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:14,892 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:14,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:12:14,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:14,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash 161223675, now seen corresponding path program 1 times [2023-11-19 05:12:14,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:14,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433127563] [2023-11-19 05:12:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:14,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:14,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:14,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249498674] [2023-11-19 05:12:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:14,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:14,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:14,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:14,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:12:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:15,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:12:15,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:15,205 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 05:12:15,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:15,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433127563] [2023-11-19 05:12:15,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249498674] [2023-11-19 05:12:15,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249498674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:15,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:15,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:15,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113390258] [2023-11-19 05:12:15,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:15,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:15,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:15,213 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 05:12:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:15,464 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2023-11-19 05:12:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:12:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 13 [2023-11-19 05:12:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:15,472 INFO L225 Difference]: With dead ends: 106 [2023-11-19 05:12:15,472 INFO L226 Difference]: Without dead ends: 101 [2023-11-19 05:12:15,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 05:12:15,477 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 120 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:15,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 42 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:12:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-19 05:12:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2023-11-19 05:12:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 79 states have internal predecessors, (93), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2023-11-19 05:12:15,517 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 13 [2023-11-19 05:12:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:15,517 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2023-11-19 05:12:15,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 05:12:15,518 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2023-11-19 05:12:15,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:12:15,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:15,520 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:15,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:15,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 05:12:15,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:15,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash 702966682, now seen corresponding path program 1 times [2023-11-19 05:12:15,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:15,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666797058] [2023-11-19 05:12:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:15,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:15,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:15,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370361617] [2023-11-19 05:12:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:15,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:15,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:15,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:15,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:12:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:15,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:12:15,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:15,963 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 05:12:15,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:15,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:15,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666797058] [2023-11-19 05:12:15,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:15,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370361617] [2023-11-19 05:12:15,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370361617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:15,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:15,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:15,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512109829] [2023-11-19 05:12:15,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:15,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:15,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:15,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:15,971 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 05:12:16,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:16,125 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2023-11-19 05:12:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:12:16,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 14 [2023-11-19 05:12:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:16,131 INFO L225 Difference]: With dead ends: 100 [2023-11-19 05:12:16,131 INFO L226 Difference]: Without dead ends: 94 [2023-11-19 05:12:16,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 05:12:16,136 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 81 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:16,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 45 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:12:16,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-19 05:12:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2023-11-19 05:12:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 80 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:16,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2023-11-19 05:12:16,165 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 14 [2023-11-19 05:12:16,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:16,165 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2023-11-19 05:12:16,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 05:12:16,166 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2023-11-19 05:12:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:12:16,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:16,167 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:16,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:16,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:16,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash -180057153, now seen corresponding path program 1 times [2023-11-19 05:12:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139282158] [2023-11-19 05:12:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:16,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:16,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281013972] [2023-11-19 05:12:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:16,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:16,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:16,399 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:16,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:12:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:16,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:12:16,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:16,515 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 05:12:16,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:16,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:16,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139282158] [2023-11-19 05:12:16,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:16,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281013972] [2023-11-19 05:12:16,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281013972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:16,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:16,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:12:16,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803122943] [2023-11-19 05:12:16,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:16,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:16,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:16,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:16,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:16,520 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 05:12:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:16,623 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2023-11-19 05:12:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:16,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 17 [2023-11-19 05:12:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:16,625 INFO L225 Difference]: With dead ends: 94 [2023-11-19 05:12:16,625 INFO L226 Difference]: Without dead ends: 92 [2023-11-19 05:12:16,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 05:12:16,627 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:16,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 62 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:12:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-19 05:12:16,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2023-11-19 05:12:16,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 80 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:16,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2023-11-19 05:12:16,639 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 17 [2023-11-19 05:12:16,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:16,640 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2023-11-19 05:12:16,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 05:12:16,640 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2023-11-19 05:12:16,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:12:16,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:16,641 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:16,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:16,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:16,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:16,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1286804386, now seen corresponding path program 1 times [2023-11-19 05:12:16,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:16,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419968419] [2023-11-19 05:12:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:16,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:16,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144316602] [2023-11-19 05:12:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:16,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:16,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:16,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:16,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:12:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:16,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:12:16,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:17,018 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 05:12:17,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:17,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:17,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419968419] [2023-11-19 05:12:17,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144316602] [2023-11-19 05:12:17,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144316602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:17,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:17,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:12:17,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949033388] [2023-11-19 05:12:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:17,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:17,025 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 05:12:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:17,134 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2023-11-19 05:12:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:17,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 18 [2023-11-19 05:12:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:17,145 INFO L225 Difference]: With dead ends: 92 [2023-11-19 05:12:17,145 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 05:12:17,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 05:12:17,147 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 16 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:17,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 64 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:12:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 05:12:17,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2023-11-19 05:12:17,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 80 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:17,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2023-11-19 05:12:17,161 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 18 [2023-11-19 05:12:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:17,162 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2023-11-19 05:12:17,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 05:12:17,162 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2023-11-19 05:12:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 05:12:17,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:17,163 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] [2023-11-19 05:12:17,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:17,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:17,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:17,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:17,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1955921237, now seen corresponding path program 1 times [2023-11-19 05:12:17,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:17,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809546515] [2023-11-19 05:12:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:17,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:17,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:17,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811487278] [2023-11-19 05:12:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:17,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:17,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:17,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:17,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:12:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:17,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:12:17,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:17,497 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 05:12:17,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:12:17,600 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 05:12:17,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:17,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809546515] [2023-11-19 05:12:17,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811487278] [2023-11-19 05:12:17,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811487278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:12:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1442127099] [2023-11-19 05:12:17,630 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-19 05:12:17,631 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:12:17,636 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:12:17,645 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:12:17,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:12:18,582 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-19 05:12:18,590 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-19 05:12:18,658 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:12:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1442127099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:19,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:12:19,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [3, 3] total 16 [2023-11-19 05:12:19,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965617839] [2023-11-19 05:12:19,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:19,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:12:19,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:12:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:12:19,826 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 14 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:12:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:20,521 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2023-11-19 05:12:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:12:20,522 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-11-19 05:12:20,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:20,523 INFO L225 Difference]: With dead ends: 92 [2023-11-19 05:12:20,523 INFO L226 Difference]: Without dead ends: 89 [2023-11-19 05:12:20,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:12:20,524 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:20,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 165 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:12:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-19 05:12:20,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-19 05:12:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 81 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2023-11-19 05:12:20,541 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 25 [2023-11-19 05:12:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:20,543 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2023-11-19 05:12:20,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:12:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2023-11-19 05:12:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 05:12:20,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:20,545 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 05:12:20,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:20,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:12:20,769 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:20,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash -56067495, now seen corresponding path program 1 times [2023-11-19 05:12:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14812859] [2023-11-19 05:12:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:20,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:20,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:20,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445373994] [2023-11-19 05:12:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:20,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:20,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:20,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:20,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:12:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:20,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:12:20,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:21,263 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 05:12:21,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:21,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:21,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14812859] [2023-11-19 05:12:21,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:21,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445373994] [2023-11-19 05:12:21,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445373994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:21,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:21,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:12:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257094887] [2023-11-19 05:12:21,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:21,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:12:21,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:12:21,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:12:21,266 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 05:12:23,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:23,819 INFO L93 Difference]: Finished difference Result 138 states and 144 transitions. [2023-11-19 05:12:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:12:23,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 29 [2023-11-19 05:12:23,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:23,821 INFO L225 Difference]: With dead ends: 138 [2023-11-19 05:12:23,821 INFO L226 Difference]: Without dead ends: 137 [2023-11-19 05:12:23,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:12:23,822 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 80 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:23,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 95 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 05:12:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-19 05:12:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 90. [2023-11-19 05:12:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 82 states have internal predecessors, (85), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2023-11-19 05:12:23,836 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 29 [2023-11-19 05:12:23,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:23,837 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2023-11-19 05:12:23,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 05:12:23,837 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2023-11-19 05:12:23,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:12:23,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:23,839 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] [2023-11-19 05:12:23,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:24,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:24,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:24,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1738092243, now seen corresponding path program 1 times [2023-11-19 05:12:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:24,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26047227] [2023-11-19 05:12:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:24,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:24,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:24,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779813701] [2023-11-19 05:12:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:24,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:24,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:24,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:24,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:12:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:24,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:12:24,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:26,233 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_55| Int) (|ULTIMATE.start_main_~z~0#1| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~x~0#1_55| |ULTIMATE.start_main_~z~0#1|))) (and (<= 1 |v_ULTIMATE.start_main_~x~0#1_55|) (<= .cse0 9223372036854775807) (<= (+ |v_ULTIMATE.start_main_~x~0#1_55| |c_ULTIMATE.start_main_~x~0#1|) .cse0)))) is different from true [2023-11-19 05:12:26,253 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 05:12:26,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:26,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:26,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26047227] [2023-11-19 05:12:26,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:26,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779813701] [2023-11-19 05:12:26,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779813701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:26,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:26,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:12:26,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805037021] [2023-11-19 05:12:26,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:26,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:12:26,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:26,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:12:26,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2023-11-19 05:12:26,256 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 05:12:26,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:26,352 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2023-11-19 05:12:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:12:26,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 30 [2023-11-19 05:12:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:26,354 INFO L225 Difference]: With dead ends: 92 [2023-11-19 05:12:26,354 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 05:12:26,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2023-11-19 05:12:26,355 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:26,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 76 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 97 Unchecked, 0.1s Time] [2023-11-19 05:12:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 05:12:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-19 05:12:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 83 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2023-11-19 05:12:26,368 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 30 [2023-11-19 05:12:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:26,369 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2023-11-19 05:12:26,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 05:12:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2023-11-19 05:12:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 05:12:26,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:26,371 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] [2023-11-19 05:12:26,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:26,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:12:26,584 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:26,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1953715419, now seen corresponding path program 1 times [2023-11-19 05:12:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:26,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819463184] [2023-11-19 05:12:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:26,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:26,612 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:26,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130935354] [2023-11-19 05:12:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:26,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:26,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:26,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:26,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:12:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:26,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:12:26,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:26,784 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 05:12:26,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:26,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:26,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819463184] [2023-11-19 05:12:26,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:26,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130935354] [2023-11-19 05:12:26,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130935354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:26,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:26,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:26,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118144012] [2023-11-19 05:12:26,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:26,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:26,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:26,787 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 05:12:29,006 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 [0] [2023-11-19 05:12:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:29,351 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2023-11-19 05:12:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:12:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 31 [2023-11-19 05:12:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:29,353 INFO L225 Difference]: With dead ends: 106 [2023-11-19 05:12:29,353 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 05:12:29,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:12:29,354 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 29 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:29,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 66 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 05:12:29,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 05:12:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2023-11-19 05:12:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 89 states have internal predecessors, (97), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2023-11-19 05:12:29,365 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 31 [2023-11-19 05:12:29,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:29,365 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2023-11-19 05:12:29,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 05:12:29,366 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2023-11-19 05:12:29,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 05:12:29,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:29,367 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] [2023-11-19 05:12:29,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:29,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 05:12:29,593 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:29,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash 899582374, now seen corresponding path program 1 times [2023-11-19 05:12:29,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:29,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301998080] [2023-11-19 05:12:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:29,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:29,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090552759] [2023-11-19 05:12:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:29,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:29,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:29,607 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:29,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:12:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:29,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:12:29,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:29,831 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 05:12:29,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:12:29,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301998080] [2023-11-19 05:12:29,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090552759] [2023-11-19 05:12:29,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090552759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:12:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [773046030] [2023-11-19 05:12:29,929 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-11-19 05:12:29,929 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:12:29,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:12:29,930 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:12:29,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:12:30,314 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-19 05:12:30,319 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-19 05:12:30,361 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:12:31,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [773046030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:31,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:12:31,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5] total 19 [2023-11-19 05:12:31,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619375935] [2023-11-19 05:12:31,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:31,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 05:12:31,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 05:12:31,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:12:31,575 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 16 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:12:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:32,214 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2023-11-19 05:12:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 05:12:32,215 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2023-11-19 05:12:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:32,216 INFO L225 Difference]: With dead ends: 101 [2023-11-19 05:12:32,216 INFO L226 Difference]: Without dead ends: 99 [2023-11-19 05:12:32,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:12:32,218 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:32,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 152 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:12:32,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-19 05:12:32,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-19 05:12:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 91 states have internal predecessors, (99), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2023-11-19 05:12:32,227 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 31 [2023-11-19 05:12:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:32,228 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2023-11-19 05:12:32,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:12:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2023-11-19 05:12:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 05:12:32,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:32,229 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] [2023-11-19 05:12:32,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 05:12:32,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:32,448 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:32,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:32,449 INFO L85 PathProgramCache]: Analyzing trace with hash 435635951, now seen corresponding path program 1 times [2023-11-19 05:12:32,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:32,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404670716] [2023-11-19 05:12:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:32,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:32,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:32,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114785936] [2023-11-19 05:12:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:32,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:32,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:32,468 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:32,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:12:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:32,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:12:32,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:32,595 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 05:12:32,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:32,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:32,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404670716] [2023-11-19 05:12:32,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:32,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114785936] [2023-11-19 05:12:32,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114785936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:32,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:32,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323249824] [2023-11-19 05:12:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:32,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:32,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:32,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:32,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:32,606 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 05:12:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:32,914 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2023-11-19 05:12:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:12:32,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 32 [2023-11-19 05:12:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:32,918 INFO L225 Difference]: With dead ends: 106 [2023-11-19 05:12:32,918 INFO L226 Difference]: Without dead ends: 97 [2023-11-19 05:12:32,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 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 05:12:32,919 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:32,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 69 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:12:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-19 05:12:32,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2023-11-19 05:12:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 84 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2023-11-19 05:12:32,929 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 32 [2023-11-19 05:12:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:32,930 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2023-11-19 05:12:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 05:12:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2023-11-19 05:12:32,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:12:32,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:32,931 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] [2023-11-19 05:12:32,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:33,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 05:12:33,136 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:33,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1137338317, now seen corresponding path program 1 times [2023-11-19 05:12:33,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:33,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017195521] [2023-11-19 05:12:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:33,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:33,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:33,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127385067] [2023-11-19 05:12:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:33,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:33,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:33,148 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:33,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:12:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:33,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:12:33,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:33,253 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 05:12:33,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:33,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017195521] [2023-11-19 05:12:33,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:33,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127385067] [2023-11-19 05:12:33,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127385067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:33,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:33,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:12:33,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176778751] [2023-11-19 05:12:33,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:33,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:12:33,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:12:33,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:12:33,259 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 05:12:33,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:33,288 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2023-11-19 05:12:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:12:33,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 34 [2023-11-19 05:12:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:33,290 INFO L225 Difference]: With dead ends: 92 [2023-11-19 05:12:33,290 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 05:12:33,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:12:33,291 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 45 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:33,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 108 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:12:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 05:12:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-19 05:12:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.459016393442623) internal successors, (89), 83 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2023-11-19 05:12:33,304 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 34 [2023-11-19 05:12:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:33,305 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2023-11-19 05:12:33,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 05:12:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2023-11-19 05:12:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 05:12:33,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:33,307 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 05:12:33,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-19 05:12:33,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:12:33,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:33,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:33,525 INFO L85 PathProgramCache]: Analyzing trace with hash -897749415, now seen corresponding path program 1 times [2023-11-19 05:12:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:33,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255172158] [2023-11-19 05:12:33,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:33,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:33,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:33,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947845339] [2023-11-19 05:12:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:33,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:33,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:33,540 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:33,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:12:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:33,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:12:33,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:12:33,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:33,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:33,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255172158] [2023-11-19 05:12:33,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:33,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947845339] [2023-11-19 05:12:33,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947845339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:33,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:33,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:12:33,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462490835] [2023-11-19 05:12:33,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:33,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:12:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:33,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:12:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:12:33,643 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 05:12:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:33,701 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2023-11-19 05:12:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:12:33,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 35 [2023-11-19 05:12:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:33,703 INFO L225 Difference]: With dead ends: 96 [2023-11-19 05:12:33,703 INFO L226 Difference]: Without dead ends: 95 [2023-11-19 05:12:33,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:12:33,704 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 36 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:33,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 200 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:12:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-19 05:12:33,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2023-11-19 05:12:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 82 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2023-11-19 05:12:33,716 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 35 [2023-11-19 05:12:33,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:33,716 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2023-11-19 05:12:33,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 05:12:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2023-11-19 05:12:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 05:12:33,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:33,718 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] [2023-11-19 05:12:33,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:33,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 05:12:33,938 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:33,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:33,939 INFO L85 PathProgramCache]: Analyzing trace with hash 551240230, now seen corresponding path program 1 times [2023-11-19 05:12:33,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:33,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756322586] [2023-11-19 05:12:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:33,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:33,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:33,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584768255] [2023-11-19 05:12:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:33,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:33,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:33,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:33,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:12:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:34,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:12:34,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:12:34,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:12:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:12:34,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756322586] [2023-11-19 05:12:34,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584768255] [2023-11-19 05:12:34,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584768255] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:12:34,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [204447434] [2023-11-19 05:12:34,209 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-19 05:12:34,210 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:12:34,210 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:12:34,210 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:12:34,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:12:37,961 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 76 for LOIs [2023-11-19 05:12:37,993 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-19 05:12:38,023 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:12:40,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [204447434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:40,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:12:40,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [5, 6] total 35 [2023-11-19 05:12:40,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611330780] [2023-11-19 05:12:40,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:40,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-19 05:12:40,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-19 05:12:40,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 05:12:40,647 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:12:48,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 05:12:51,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 05:12:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:51,661 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2023-11-19 05:12:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-19 05:12:51,662 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2023-11-19 05:12:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:51,662 INFO L225 Difference]: With dead ends: 94 [2023-11-19 05:12:51,663 INFO L226 Difference]: Without dead ends: 84 [2023-11-19 05:12:51,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1150 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=481, Invalid=3301, Unknown=0, NotChecked=0, Total=3782 [2023-11-19 05:12:51,666 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 154 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:51,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 84 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 952 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2023-11-19 05:12:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-19 05:12:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2023-11-19 05:12:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 74 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:12:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2023-11-19 05:12:51,676 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 37 [2023-11-19 05:12:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:51,676 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2023-11-19 05:12:51,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:12:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2023-11-19 05:12:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 05:12:51,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:51,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:51,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 05:12:51,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:51,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:12:51,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:51,879 INFO L85 PathProgramCache]: Analyzing trace with hash 551240251, now seen corresponding path program 1 times [2023-11-19 05:12:51,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:51,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490359995] [2023-11-19 05:12:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:51,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:51,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:12:51,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905773486] [2023-11-19 05:12:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:51,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:51,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:51,889 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:51,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 05:12:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:51,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 05:12:51,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:12:52,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:12:52,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:52,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490359995] [2023-11-19 05:12:52,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:12:52,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905773486] [2023-11-19 05:12:52,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905773486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:12:52,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [914170854] [2023-11-19 05:12:52,306 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-11-19 05:12:52,306 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:12:52,307 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:12:52,307 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:12:52,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:12:55,963 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 76 for LOIs [2023-11-19 05:12:55,993 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-19 05:12:56,013 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:12:59,970 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4561#(and (<= ~counter~0 10) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 0) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 1 ~counter~0) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 1 |ULTIMATE.start_main_~z~0#1|))' at error location [2023-11-19 05:12:59,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:12:59,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:12:59,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 05:12:59,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106322445] [2023-11-19 05:12:59,971 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 05:12:59,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:12:59,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:59,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:12:59,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 05:12:59,972 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 7 states, 4 states have (on average 7.75) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:13:00,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:00,124 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2023-11-19 05:13:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:13:00,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 7.75) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2023-11-19 05:13:00,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:00,126 INFO L225 Difference]: With dead ends: 82 [2023-11-19 05:13:00,126 INFO L226 Difference]: Without dead ends: 80 [2023-11-19 05:13:00,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 05:13:00,127 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 63 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:00,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 80 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:13:00,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-19 05:13:00,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-19 05:13:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 72 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:13:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2023-11-19 05:13:00,138 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 37 [2023-11-19 05:13:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:00,139 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2023-11-19 05:13:00,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 7.75) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:13:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2023-11-19 05:13:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 05:13:00,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:00,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:00,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 05:13:00,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:00,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:13:00,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:00,357 INFO L85 PathProgramCache]: Analyzing trace with hash -91421350, now seen corresponding path program 1 times [2023-11-19 05:13:00,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:00,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126536124] [2023-11-19 05:13:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:00,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:00,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:13:00,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810374853] [2023-11-19 05:13:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:00,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:00,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:00,368 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:13:00,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 05:13:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:00,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 05:13:00,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:13:00,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:13:00,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:00,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126536124] [2023-11-19 05:13:00,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:13:00,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810374853] [2023-11-19 05:13:00,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810374853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:13:00,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1802955939] [2023-11-19 05:13:00,922 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-11-19 05:13:00,922 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:13:00,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:13:00,922 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:13:00,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:13:03,296 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 76 for LOIs [2023-11-19 05:13:03,326 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-19 05:13:03,350 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:13:06,374 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4934#(and (<= ~counter~0 10) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= 1 ~counter~0) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 1 |ULTIMATE.start_main_~z~0#1|))' at error location [2023-11-19 05:13:06,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:13:06,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:13:06,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 05:13:06,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729859645] [2023-11-19 05:13:06,375 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 05:13:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:13:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:06,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:13:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 05:13:06,376 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 7 states, 4 states have (on average 8.0) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:13:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:06,559 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2023-11-19 05:13:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:13:06,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 8.0) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2023-11-19 05:13:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:06,561 INFO L225 Difference]: With dead ends: 114 [2023-11-19 05:13:06,561 INFO L226 Difference]: Without dead ends: 111 [2023-11-19 05:13:06,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 05:13:06,562 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 151 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:06,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 59 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:13:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-19 05:13:06,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2023-11-19 05:13:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 84 states have (on average 1.2261904761904763) internal successors, (103), 95 states have internal predecessors, (103), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:13:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2023-11-19 05:13:06,575 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 38 [2023-11-19 05:13:06,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:06,576 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2023-11-19 05:13:06,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 8.0) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:13:06,576 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2023-11-19 05:13:06,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 05:13:06,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:06,577 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] [2023-11-19 05:13:06,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 05:13:06,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:06,792 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 05:13:06,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:06,793 INFO L85 PathProgramCache]: Analyzing trace with hash -542249302, now seen corresponding path program 1 times [2023-11-19 05:13:06,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:06,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141537495] [2023-11-19 05:13:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:06,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:06,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:13:06,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552412985] [2023-11-19 05:13:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:06,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:13:06,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:06,805 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:13:06,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37ab4bc-7b3e-4feb-93f7-d33415659b05/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 05:13:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:06,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:13:06,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:13:06,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:13:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:13:07,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:07,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141537495] [2023-11-19 05:13:07,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:13:07,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552412985] [2023-11-19 05:13:07,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552412985] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:13:07,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1417406112] [2023-11-19 05:13:07,042 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-11-19 05:13:07,042 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:13:07,042 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:13:07,042 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:13:07,042 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs